Version - 2024.01

Dernière mise-à-jour : 2024/12/20 15:20

DOF309 - Gestion de Paquets pour Kubernetes avec Helm

Contenu du Module

  • DOF309 - Gestion de Paquets pour Kubernetes avec Helm
    • Contenu du Module
    • Présentation de Helm
    • LAB #1 - Travailler avec Helm
      • 1.1 - Installation de Helm
      • 1.2 - La Commande helm search hub
      • 1.3 - Rechercher dans le Helm Hub
      • 1.4 - Ajouter et supprimer un Dépôt
      • 1.5 - La Commande helm search repo
      • 1.6 - La Commande helm show
      • 1.7 - Installation d'un Chart
      • 1.8 - La Commande helm get
      • 1.9 - Utilisation des NOTES
      • 1.10 - La Commande helm upgrade
      • 1.11 - La Commande helm history
      • 1.12 - La Commande helm rollback
      • 1.13 - La Commande helm uninstall
    • LAB #2 - Supervision de Kubernetes avec le Stack EFK
      • 2.1 - Présentation du Stack EFK
      • 2.2 - Installation du Chart elasticsearch
      • 2.3 - Installation du Chart fluentd-elasticsearch
      • 2.4 - Installation du Chart kibana
      • 2.5 - Génération de Traces dans Kubernetes
      • 2.6 - Visualisation des Données avec Kibana

Ressources

Lab #1

Lab #2

Présentation de Helm

Helm est un gestionnaire de paquets pour Kubernetes. Helm 3.x est compatible avec les versions n-3 de Kubernetes où n est la version de Kubernetes contre laquelle la version de Helm a été compilée, tandis que le gestionnaire Helm 2.x n'est compatible qu'avec les versions n-1 de Kubernetes où n est la version de Kubernetes contre laquelle la version de Helm a été compilée.

LAB #1 - Travailler avec Helm

Placez-vous dans votre Gateway. Commencez par vérifier le status de Minikube :

trainee@gateway:~$ minikube status
minikube
type: Control Plane
host: Running
kubelet: Running
apiserver: Running
kubeconfig: Configured

1.1 - Installation de Helm

Installez helm :

trainee@gateway:~$ su -
Password: 

root@gateway:~# curl https://baltocdn.com/helm/signing.asc | gpg --dearmor | sudo tee /usr/share/keyrings/helm.gpg > /dev/null
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  1699  100  1699    0     0  17161      0 --:--:-- --:--:-- --:--:-- 17336

root@gateway:~# echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/helm.gpg] https://baltocdn.com/helm/stable/debian/ all main" | sudo tee /etc/apt/sources.list.d/helm-stable-debian.list
deb [arch=amd64 signed-by=/usr/share/keyrings/helm.gpg] https://baltocdn.com/helm/stable/debian/ all main

root@gateway:~# apt-get update
...

root@gateway:~# apt-get install helm
...

Vérifiez ensuite votre travail :

root@gateway:~# which helm
/usr/sbin/helm

root@gateway:~# helm version
version.BuildInfo{Version:"v3.16.3", GitCommit:"cfd07493f46efc9debd9cc1b02a0961186df7fdf", GitTreeState:"clean", GoVersion:"go1.22.7"}

Pour permettre l'auto-complétion de la ligne de commande avec la commande helm, similaire à celle sous bash, exécutez la commande suivante en tant que trainee :

root@gateway:~# exit
logout
trainee@gateway:~$

trainee@gateway:~$ source <(helm completion bash)

Pour visualiser les variables d'environnement de la commande helm, exécutez la commande helm env :

trainee@gateway:~$ helm env
HELM_BIN="helm"
HELM_BURST_LIMIT="100"
HELM_CACHE_HOME="/home/trainee/.cache/helm"
HELM_CONFIG_HOME="/home/trainee/.config/helm"
HELM_DATA_HOME="/home/trainee/.local/share/helm"
HELM_DEBUG="false"
HELM_KUBEAPISERVER=""
HELM_KUBEASGROUPS=""
HELM_KUBEASUSER=""
HELM_KUBECAFILE=""
HELM_KUBECONTEXT=""
HELM_KUBEINSECURE_SKIP_TLS_VERIFY="false"
HELM_KUBETLS_SERVER_NAME=""
HELM_KUBETOKEN=""
HELM_MAX_HISTORY="10"
HELM_NAMESPACE="default"
HELM_PLUGINS="/home/trainee/.local/share/helm/plugins"
HELM_QPS="0.00"
HELM_REGISTRY_CONFIG="/home/trainee/.config/helm/registry/config.json"
HELM_REPOSITORY_CACHE="/home/trainee/.cache/helm/repository"
HELM_REPOSITORY_CONFIG="/home/trainee/.config/helm/repositories.yaml"

Important : Notez que la valeur de la variable $HELM_NAMESPACE est default. Pour modifier le Namespace utilisé lors de l'utilisation de la commande helm, vous pouvez soit modifier la valeur de cette variable, soit utiliser l'option –namespace ou -n lors de chaque exécution le la commande.

Pour visualiser l'environnement de la commande kubectl exécutez la commande kubectl config view :

trainee@gateway:~$ kubectl config view
apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: DATA+OMITTED
    server: https://192.168.42.99:8443
  name: 192-168-42-99:8443
- cluster:
    certificate-authority: /home/trainee/.minikube/ca.crt
    extensions:
    - extension:
        last-update: Fri, 20 Dec 2024 14:48:36 CET
        provider: minikube.sigs.k8s.io
        version: v1.34.0
      name: cluster_info
    server: https://192.168.59.100:8443
  name: minikube
contexts:
- context:
    cluster: minikube
    extensions:
    - extension:
        last-update: Fri, 20 Dec 2024 14:48:36 CET
        provider: minikube.sigs.k8s.io
        version: v1.34.0
      name: context_info
    namespace: default
    user: minikube
  name: minikube
- context:
    cluster: 192-168-42-99:8443
    namespace: myproject
    user: developer/192-168-42-99:8443
  name: minishift
- context:
    cluster: 192-168-42-99:8443
    namespace: myproject
    user: developer/192-168-42-99:8443
  name: myproject/192-168-42-99:8443/developer
- context:
    cluster: 192-168-42-99:8443
    namespace: myproject
    user: system:admin/192-168-42-99:8443
  name: myproject/192-168-42-99:8443/system:admin
current-context: minikube
kind: Config
preferences: {}
users:
- name: developer/192-168-42-99:8443
  user:
    token: REDACTED
- name: minikube
  user:
    client-certificate: /home/trainee/.minikube/profiles/minikube/client.crt
    client-key: /home/trainee/.minikube/profiles/minikube/client.key
- name: system:admin/192-168-42-99:8443
  user:
    client-certificate-data: DATA+OMITTED
    client-key-data: DATA+OMITTED

1.2 - La Commande helm search hub

Un grand nombre de Charts Helm sont regroupés sur le site The Artifact Hub. Il est possible de lister le contenu du Hub en ligne de commande :

trainee@gateway:~$ helm search hub | more
URL                                                     CHART VERSION                                           APP VERSION                                  
        DESCRIPTION                                       
https://artifacthub.io/packages/helm/mya/12factor       24.1.2                                                                                               
        Easily deploy any application that conforms to ...
https://artifacthub.io/packages/helm/gabibbo97/...      0.1.0                                                   fedora-32                                    
        389 Directory Server                              
https://artifacthub.io/packages/helm/four-allpo...      20.3.4                                                  3.10.38                                      
        A Helm chart for 4ALLPORTAL version 3.10.0 and up 
https://artifacthub.io/packages/helm/helm-7dtd/...      0.1.0                                                   0.4.4                                        
        7 Days to Die is an open-world game that is a u...
https://artifacthub.io/packages/helm/openshift/...      0.2.0                                                   1.16.0                                       
        A Helm chart for A10 Thunder Kubernetes Connector 
https://artifacthub.io/packages/helm/aad-pod-id...      4.1.18                                                  1.8.17                                       
        Deploy components for aad-pod-identity            
https://artifacthub.io/packages/helm/smo-helm-c...      6.0.0                                                                                                
        ONAP Application Authorization Framework          
https://artifacthub.io/packages/helm/smo-helm-c...      6.0.0                                                                                                
        ONAP Active and Available Inventory               
https://artifacthub.io/packages/helm/statcan/aa...      0.1.7                                                   1.0                                          
        A Helm chart for AAW Financial Data Reconciliation
https://artifacthub.io/packages/helm/arhatdev/a...      0.1.0                                                   latest                                       
        Network Manager Living at Edge                    
https://artifacthub.io/packages/helm/apfelplant...      0.1.0                                                   1.16.0                                       
--More--

Recherchez ensuite tout Chart contenant la chaîne mysql :

trainee@gateway:~$ helm search hub mysql
URL                                                     CHART VERSION   APP VERSION             DESCRIPTION                                       
https://artifacthub.io/packages/helm/mysql/mysql        2.1.3           8.0.26                  deploy mysql standalone or group-replication He...
https://artifacthub.io/packages/helm/kubegems/m...      8.9.6           8.0.29                  MySQL is a fast, reliable, scalable, and easy t...
https://artifacthub.io/packages/helm/bitnami-ak...      9.4.3           8.0.31                  MySQL is a fast, reliable, scalable, and easy t...
https://artifacthub.io/packages/helm/dify-tidb/...      11.1.17         8.4.2                   MySQL is a fast, reliable, scalable, and easy t...
https://artifacthub.io/packages/helm/kubesphere...      1.0.2           5.7.33                  High Availability MySQL Cluster, Open Source.     
https://artifacthub.io/packages/helm/ygqygq2/mysql      9.5.0           8.0.32                  MySQL is a fast, reliable, scalable, and easy t...
https://artifacthub.io/packages/helm/cloudnativ...      5.0.1           8.0.16                  Chart to create a Highly available MySQL cluster  
https://artifacthub.io/packages/helm/warjiang/m...      9.10.5          8.0.33                  MySQL is a fast, reliable, scalable, and easy t...
https://artifacthub.io/packages/helm/stakater/m...      1.0.6                                   mysql chart that runs on kubernetes               
https://artifacthub.io/packages/helm/choerodon/...      8.5.1           8.5.1                   Chart to create a Highly available MySQL cluster  
https://artifacthub.io/packages/helm/saber/mysql        8.8.21          8.0.27                  Chart to create a Highly available MySQL cluster  
https://artifacthub.io/packages/helm/groundhog2...      3.0.1           8.4.3                   A Helm chart for MySQL on Kubernetes              
https://artifacthub.io/packages/helm/bitnami/mysql      12.2.0          8.4.3                   MySQL is a fast, reliable, scalable, and easy t...
https://artifacthub.io/packages/helm/kvalitetsi...      9.10.4          8.0.33                  MySQL is a fast, reliable, scalable, and easy t...
https://artifacthub.io/packages/helm/druid-helm...      1.6.4           5.7.30                  Fast, reliable, scalable, and easy to use open-...
https://artifacthub.io/packages/helm/devopspilo...      1.0.0           1.0.0                   Helm chart for running mysql database             
https://artifacthub.io/packages/helm/gengxianku...      0.2.0           1.16.0                  MySQL is an open-source relational database man...
https://artifacthub.io/packages/helm/t3n/mysql          1.0.0           5.7.32                  Fast, reliable, scalable, and easy to use open-...
https://artifacthub.io/packages/helm/helmcourse...      0.2.4           5.7                     MySQL packaged in Rajware Helm course             
https://artifacthub.io/packages/helm/ot-contain...      0.1.0           1.16.0                  A Helm chart for Kubernetes to deploy mysql.      
https://artifacthub.io/packages/helm/kubeblocks...      1.0.0-alpha.0   5.7.44                  MySQL is a widely used, open-source relational ...
https://artifacthub.io/packages/helm/someblackm...      1.7.1           5.7.33                  Fast, reliable, scalable, and easy to use open-...
https://artifacthub.io/packages/helm/kubesphere...      1.6.8           5.7.31                  Fast, reliable, scalable, and easy to use open-...
https://artifacthub.io/packages/helm/kubegemsap...      4.5.2           5.7.26                  Chart to create a Highly available MySQL cluster  
https://artifacthub.io/packages/helm/wso2/mysql         1.6.9           5.7.30                  Fast, reliable, scalable, and easy to use open-...
https://artifacthub.io/packages/helm/homeenterp...      0.5.0           8.0.29                  MySQL Database Server                             
https://artifacthub.io/packages/helm/helm-chart...      1.0.0           5.7.26                  Chart to create a Highly available MySQL cluster  
https://artifacthub.io/packages/helm/anvibo/mysql       0.1.0           1.16.0                  A Helm chart for Kubernetes                       
https://artifacthub.io/packages/helm/huangcheng...      0.1.0           1.16.0                  A Helm chart for Kubernetes                       
https://artifacthub.io/packages/helm/mysql-oper...      2.2.2           9.1.0                   MySQL InnoDB Cluster Helm Chart for deploying M...
https://artifacthub.io/packages/helm/mysql-oper...      2.2.2           9.1.0-2.2.2             MySQL Operator Helm Chart for deploying MySQL I...
https://artifacthub.io/packages/helm/softonic/m...      2.2.3           0.3.0                   Take mysql backups from any mysql instance to A...
https://artifacthub.io/packages/helm/kfirfer/my...      0.0.4           8.0.20                  A Helm chart for MySQL Cluster                    
https://artifacthub.io/packages/helm/wordpress-...      1.0.0           1.1                     This is a package for configuring wordpress and...
https://artifacthub.io/packages/helm/kubeblocks...      1.0.0-alpha.0   8.0.30                  ApeCloud MySQL is a database that is compatible...
https://artifacthub.io/packages/helm/kubeblocks...      1.0.0-alpha.0   8.0.33                  MySQL is a widely used, open-source relational ...
https://artifacthub.io/packages/helm/bitpoke/my...      0.6.3           v0.6.3                  A Helm chart for easy deployment of a MySQL clu...
https://artifacthub.io/packages/helm/bitpoke/my...      0.6.3           v0.6.3                  A helm chart for Bitpoke Operator for MySQL       
https://artifacthub.io/packages/helm/stakater/m...      1.0.6                                   mysql-storage chart that runs on kubernetes       
https://artifacthub.io/packages/helm/kubesphere...      1.0.1           5.7.33                  High Availability MySQL Cluster, Open Source.     
https://artifacthub.io/packages/helm/appscode/s...      8.0.21          8.0.21                  stash-mysql - MySQL database plugin for Stash b...
https://artifacthub.io/packages/helm/wordpressm...      1.0.0                                   This is the Helm Chart that creates the Wordpre...
https://artifacthub.io/packages/helm/kubeblocks...      0.5.3           8.0.30                  ApeCloud MySQL-Scale is ApeCloud MySQL proxy. A...
https://artifacthub.io/packages/helm/kubeblocks...      1.0.0-alpha.0   8.0.30                  ApeCloud MySQL is a database that is compatible...
https://artifacthub.io/packages/helm/kube-wordp...      0.1.0           0.0.1-alpha             Helm Chart for Wordpress installation on MySQL ...
https://artifacthub.io/packages/helm/debeando/a...      0.10.0          0.6.0                   A Helm chart for DeBeAndo Agent for MySQL         
https://artifacthub.io/packages/helm/appscode/m...      2024.12.18      v0.3.0                  A Helm chart for MySQL Alert by AppsCode          
https://artifacthub.io/packages/helm/wso2/mysql-am      4.2.0-1         5.7                     A Helm chart for MySQL based deployment of WSO2...
https://artifacthub.io/packages/helm/choerodon/...      1.0.0           5.7                     mysql client                                      
https://artifacthub.io/packages/helm/kubesphere...      0.5.6           v0.11.0                 A Helm chart for prometheus mysql exporter with...
https://artifacthub.io/packages/helm/openshift/...      0.0.1           0.0.1                   This content is expermental, do not use it in p...
https://artifacthub.io/packages/helm/wso2is-pat...      5.11.0-2        5.7                     A Helm chart for MySQL based deployment of WSO2...
https://artifacthub.io/packages/helm/wso2/mysql-is      5.11.0-5        5.7                     A Helm chart for MySQL based deployment of WSO2...
https://artifacthub.io/packages/helm/wso2/mysql-ob      1.5.0-1         5.7                     A Helm chart for MySQL based deployment of WSO2...
https://artifacthub.io/packages/helm/banzaiclou...      0.1.0           0.2.0                   A Helm chart for deploying the Oracle MySQL Ope...
https://artifacthub.io/packages/helm/grdscloud/...      0.1.0           1.0.0                   A MySQL Database Operator Helm chart for Kubern...
https://artifacthub.io/packages/helm/openshift/...      0.0.4           0.0.4                   This content is expermental, do not use it in p...
https://artifacthub.io/packages/helm/openshift/...      0.1.0           0.1.0                   A Helm chart for MySQL Service Endpoint Definit...
https://artifacthub.io/packages/helm/ygqygq2/my...      1.0.0           5.7.24                  A Helm chart servicemonitor for mysql exporter    
https://artifacthub.io/packages/helm/kubeblocks...      0.9.0           8.0.32                  MySQL is a widely used, open-source relational ...
https://artifacthub.io/packages/helm/kubeblocks...      0.8.0           8.0.32                  MySQL is a widely used, open-source relational ...
https://artifacthub.io/packages/helm/wener/prom...      2.8.0           v0.16.0                 A Helm chart for prometheus mysql exporter with...
https://artifacthub.io/packages/helm/banzaiclou...      0.2.4           v0.11.0                 A Helm chart for prometheus mysql exporter with...
https://artifacthub.io/packages/helm/prometheus...      1.0.1           v0.12.1                 A Helm chart for prometheus mysql exporter with...
https://artifacthub.io/packages/helm/prometheus...      2.8.0           v0.16.0                 A Helm chart for prometheus mysql exporter with...
https://artifacthub.io/packages/helm/kubegemsap...      1.8.1           v0.12.1                 A Helm chart for prometheus mysql exporter with...
https://artifacthub.io/packages/helm/cloudnativ...      0.3.2           v0.11.0                 A Helm chart for prometheus mysql exporter with...
https://artifacthub.io/packages/helm/braedon/pr...      0.2.0                                   Run queries on Mysql and export the results as ...
https://artifacthub.io/packages/helm/wenerme/pr...      2.8.0           v0.16.0                 A Helm chart for prometheus mysql exporter with...
https://artifacthub.io/packages/helm/openshift/...      0.0.2           0.0.2                   This content is experimental, do not use it in ...
https://artifacthub.io/packages/helm/bytebuilde...      2021.3.11       v2021.03.11             Stash MySQL Addon Community                       
https://artifacthub.io/packages/helm/fermosit/z...      3.0.2           6.4.0-latest            Zabbix monitoring server                          
https://artifacthub.io/packages/helm/kubeblocks...      0.5.3           8.0.30                  An ApeCloud MySQL-Scale Cluster Helm chart for ...
https://artifacthub.io/packages/helm/clusterped...      0.1.1           v0.6.0                  A Helm chart for Clusterpedia                     
https://artifacthub.io/packages/helm/t3n/mysql-...      2.1.0                                                                                     
https://artifacthub.io/packages/helm/kfirfer/my...      0.3.0           0.0.4                   A Helm chart for Kubernetes                       
https://artifacthub.io/packages/helm/wso2/mysql-ei      6.6.0-3         5.7                     A Helm chart for WSO2 Enterprise Integrator Dat...
https://artifacthub.io/packages/helm/sikalabs/w...      0.1.2                                                                                     
https://artifacthub.io/packages/helm/choerodon/...      0.1.0           1.0                     A Helm chart for Kubernetes                       
https://artifacthub.io/packages/helm/phppgadmin...      0.1.0                                   A Helm chart for Kubernetes                       
https://artifacthub.io/packages/helm/azure-samp...      0.1.0                                   A Helm chart for Kubernetes                       
https://artifacthub.io/packages/helm/mysql-ndb-...      1.6.0           9.1.0-1.6.0             A Helm chart for deploying the Oracle MySQL NDB...
https://artifacthub.io/packages/helm/sonu-wordp...      1.0.0           2                       This is my custom chart to deploy wordpress and...
https://artifacthub.io/packages/helm/bitnami-ak...      10.3.6          5.2.0                   phpMyAdmin is a free software tool written in P...
https://artifacthub.io/packages/helm/bitnami/ph...      18.1.0          5.2.1                   phpMyAdmin is a free software tool written in P...
https://artifacthub.io/packages/helm/paradeum-t...      0.1.9           4.8.1                   Adminer is a full-featured database management ...
https://artifacthub.io/packages/helm/cetic/adminer      0.2.1           4.8.1                   Adminer is a full-featured database management ...
https://artifacthub.io/packages/helm/startechni...      0.1.8           4.8.1                   Adminer is a full-featured database management ...
https://artifacthub.io/packages/helm/inspur/dble        0.0.2           2.19.09                 DBLE is a high scalability middle-ware for MySQ...
https://artifacthub.io/packages/helm/wordpress-...      1.0.0           2                       This is my custom chart to deploy wordpress and...
https://artifacthub.io/packages/helm/cloudnativ...      2.4.0           2.4.0                   A Helm chart to help backup MySQL databases usi...
https://artifacthub.io/packages/helm/kfirfer/my...      2.8.0           1.0.3                   A Helm chart to help backup MySQL databases usi...
https://artifacthub.io/packages/helm/kokuwa/mys...      6.4.0           v3.2.0                  A Helm chart to help backup MySQL databases usi...
https://artifacthub.io/packages/helm/cloudnativ...      0.5.1           5.7.13                  MySQL cluster with a single master and zero or ...
https://artifacthub.io/packages/helm/cloudnativ...      1.0.0           5.7.17                  free, fully compatible, enhanced, open source d...
https://artifacthub.io/packages/helm/cloudnativ...      1.0.0           5.7.19                  free, fully compatible, enhanced, open source d...
https://artifacthub.io/packages/helm/kfirfer/pe...      1.5.10          8.0.32-24.2             free, fully compatible, enhanced, open source d...
https://artifacthub.io/packages/helm/someblackm...      6.5.2           5.0.2                   phpMyAdmin is an mysql administration frontend    
https://artifacthub.io/packages/helm/percona/ps...      0.8.0           0.8.0                   A Helm chart for Deploying the Percona Operator...
https://artifacthub.io/packages/helm/wordpress-...      0.1.0           1.1                     this is chart create the wordpress with suitabl...
https://artifacthub.io/packages/helm/kubesphere...      1.0.0           5.7.33                  XenonDB is a High-Availability MySQL cluster, o...
https://artifacthub.io/packages/helm/evolves/ba...      0.6.1           0.6.1                   Backup is an open-source backup tools written i...
https://artifacthub.io/packages/helm/schmitzis/...      0.1.1           21.12                   Wiki application made by Bookstack and MySQL      
https://artifacthub.io/packages/helm/xxl-job-ad...      0.1.2           1.1.6                   Canal Server is capable of parsing MySQL binlog...
https://artifacthub.io/packages/helm/t3n/clouds...      2.0.3           1.16                    Google Cloud SQL Proxy                            
https://artifacthub.io/packages/helm/makaira/co...      1.3.0           1.0.0                   Copy a MySQL or MariaDB database from one serve...
https://artifacthub.io/packages/helm/helmcourse...      0.3.3           adminer: 4.7,mysql: 5.7 Adminer front-end, MySQL backend packaged in Ra...
https://artifacthub.io/packages/helm/djjudas21/...      0.0.16          0.0.9                   A Helm chart to help backup SQL databases using...
https://artifacthub.io/packages/helm/db-operato...      1.30.0          2.10.0                  The DB Operator creates databases and make them...
https://artifacthub.io/packages/helm/ju4t/django        0.1.0           4.1.4                   Django是一个有期限的完美主义者网络框架!          
https://artifacthub.io/packages/helm/edgelesssy...      0.3.2           v0.3.2                  EdgelessDB is a MySQL-compatible database for c...
https://artifacthub.io/packages/helm/monosql-op...      2.0.0           2.0.0                   A Helm chart for deploying Monograph Operator t...
https://artifacthub.io/packages/helm/sqream-cha...      0.6.0           1.16.0                  A Helm chart for accessing managed redis & mysql  
https://artifacthub.io/packages/helm/featurehub...      4.1.4           1.8.0                   FeatueHub is an Enterprise Grade, Cloud Native ...
https://artifacthub.io/packages/helm/sqream-cha...      0.6.2           1.16.0                  Helm chart for Flows service, part of java back...
https://artifacthub.io/packages/helm/kubeblocks...      0.9.0           0.2.0                   ApeCloud FoxLake is a fast & low-cost analytica...
https://artifacthub.io/packages/helm/startechni...      1.0.1           3.2.3                   FreeRADIUS is a modular, high performance free ...
https://artifacthub.io/packages/helm/getindata/...      0.20.5          1.16                    Google Cloud SQL Proxy                            
https://artifacthub.io/packages/helm/rimusz/gcl...      0.25.6          2.6.0                   Google Cloud SQL Proxy                            
https://artifacthub.io/packages/helm/datarepo/g...      0.19.13         1.17                    Google Cloud SQL Proxy                            
https://artifacthub.io/packages/helm/ibm-charts...      1.1.0                                   Galera Cluster is a multi-master solution for M...
https://artifacthub.io/packages/helm/ibm-charts...      1.1.2                                   MariaDB is developed as open source software an...
https://artifacthub.io/packages/helm/cloudposse...      0.1.4                                   A Helm chart for Linux, Apache, MySQL, PHP (aka...
https://artifacthub.io/packages/helm/login-test...      0.1.0           1.0.0                   A Helm chart for login_test_backend with MySQL ...
https://artifacthub.io/packages/helm/bitnami/ma...      20.2.1          11.4.4                  MariaDB is an open source, community-developed ...
https://artifacthub.io/packages/helm/riftbit/ma...      9.6.0           10.5.12                 Fast, reliable, scalable, and easy to use open-...
https://artifacthub.io/packages/helm/cloudnativ...      6.1.0           10.3.15                 Fast, reliable, scalable, and easy to use open-...
https://artifacthub.io/packages/helm/camptocamp...      1.0.0                                   Fast, reliable, scalable, and easy to use open-...
https://artifacthub.io/packages/helm/bitnami-ak...      11.4.0          10.6.11                 MariaDB is an open source, community-developed ...
https://artifacthub.io/packages/helm/kvalitetsi...      11.2.2          10.6.9                  MariaDB is an open source, community-developed ...
https://artifacthub.io/packages/helm/petersando...      15.2.5          11.4.3                  Fast, reliable, scalable, and easy to use open-...
https://artifacthub.io/packages/helm/kubeblocks...      1.0.0-alpha.0   10.6.15                 MariaDB is an open-source relational database m...
https://artifacthub.io/packages/helm/kvalitetsi...      7.4.1           10.6.9                  MariaDB Galera is a multi-primary database clus...
https://artifacthub.io/packages/helm/smo-helm-c...      6.0.0                                   Chart for MariaDB Galera cluster                  
https://artifacthub.io/packages/helm/bitnami/ma...      14.1.0          11.4.4                  MariaDB Galera is a multi-primary database clus...
https://artifacthub.io/packages/helm/bitnami-ak...      7.4.7           10.6.10                 MariaDB Galera is a multi-primary database clus...
https://artifacthub.io/packages/helm/appuio/mar...      1.2.6           10.5.12                 MariaDB Galera is a multi-master database clust...
https://artifacthub.io/packages/helm/riftbit/ma...      5.13.5          10.5.12                 MariaDB Galera is a multi-master database clust...
https://artifacthub.io/packages/helm/mariadb-op...      0.36.0          0.36.0                  Run and operate MariaDB in a cloud native way     
https://artifacthub.io/packages/helm/mariadb-op...      0.36.0          0.0.0                   mariadb-operator CRDs                             
https://artifacthub.io/packages/helm/moco/moco          0.15.1          0.25.1                  MySQL operator on Kubernetes using GTID-based s...
https://artifacthub.io/packages/helm/sqream-cha...      0.7.1           1.16.0                  Helm chart for monitor service, part of java ba...
https://artifacthub.io/packages/helm/monosql-op...      1.0.5           1.0.4                   A Helm chart for deploying Monograph Operator t...
https://artifacthub.io/packages/helm/viveksahu2...      1.0.0           2                       This is my custom chart to deploy wordpress and...
https://artifacthub.io/packages/helm/mysql2s3bk...      0.1.0           alpha                   MySQL database JOBS                               
https://artifacthub.io/packages/helm/kubeblocks...      3.2.6           3.2.6                   Orchestrator is a MySQL high availability and r...
https://artifacthub.io/packages/helm/kubeblocks...      1.0.0-alpha.0   3.2.6                   orchestrator                                      
https://artifacthub.io/packages/helm/christianh...      1.13.2                                  A Helm chart to deploy Passbolt with MySQL and ...
https://artifacthub.io/packages/helm/vquie/phpipam      1.0.3           1.5.2                   phpipam is an open-source web IP address manage...
https://artifacthub.io/packages/helm/fsdrw08/po...      0.1.3           4.5.3                   PowerDNS all in one (powerdns + powerdns-admin ...
https://artifacthub.io/packages/helm/percona/px...      1.16.0          1.16.0                  A Helm chart for deploying the Percona Operator...
https://artifacthub.io/packages/helm/kubesphere...      0.1.0           5.7_1.0.1               A Helm chart for Kubernetes to run StoneDB stan...
https://artifacthub.io/packages/helm/stonedb/st...      0.1.0           5.7_1.0.1               A Helm chart for Kubernetes to run StoneDB        
https://artifacthub.io/packages/helm/banzaiclou...      0.0.2                                   A TiDB Helm chart for Kubernetes                  
https://artifacthub.io/packages/helm/kubeblocks...      1.0.0-alpha.0   v7.1.5                  TiDB is an open-source, cloud-native, distribut...
https://artifacthub.io/packages/helm/webapp-db-...      0.1.0           1.0                     Java frontend with a MySQL backend                
https://artifacthub.io/packages/helm/sikademo/w...      2020.11.18                              Example Wordpress Chart (with MySQL)              
https://artifacthub.io/packages/helm/wordpressm...      0.1.0           1.1                                                                       
https://artifacthub.io/packages/helm/rock8s/xtradb      1.12.0          0.71.0                  enterprise MySQL                                  
https://artifacthub.io/packages/helm/xxl-job-ad...      0.2.3           v3.1.8                  🐳 A most popular sql audit platform for mysql 

Important : Notez que la chaîne recherchée peut se retrouver dans l'URL aussi bien que dans la description.

Recherchez maintenant le Chart WordPress. Par défaut, les colonnes plus large que 50 caractères sont tronquées :

trainee@gateway:~$ helm search hub wordpress
URL                                                     CHART VERSION   APP VERSION             DESCRIPTION                                       
https://artifacthub.io/packages/helm/kube-wordp...      0.1.0           1.1                     this is my wordpress package                      
https://artifacthub.io/packages/helm/wordpress-...      1.0.2           1.0.0                   A Helm chart for deploying Wordpress+Mariadb st...
https://artifacthub.io/packages/helm/shubham-wo...      0.1.0           1.16.0                  A Helm chart for Kubernetes                       
https://artifacthub.io/packages/helm/bitnami-ak...      15.2.13         6.1.0                   WordPress is the world's most popular blogging ...
https://artifacthub.io/packages/helm/bitnami/wo...      24.1.5          6.7.1                   WordPress is the world's most popular blogging ...
https://artifacthub.io/packages/helm/sikalabs/w...      0.2.0                                   Simple Wordpress                                  
https://artifacthub.io/packages/helm/riftbit/wo...      12.1.16         5.8.1                   Web publishing platform for building blogs and ...
https://artifacthub.io/packages/helm/schichtel/...      0.7.1           6.6.1                   A Helm chart for WordPress                        
https://artifacthub.io/packages/helm/skywordpre...      0.1.0           1.16.0                  A Helm chart for WordPress                        
https://artifacthub.io/packages/helm/rock8s/wor...      0.12.4          v0.12.4                 An open source content management system          
https://artifacthub.io/packages/helm/sikademo/w...      2020.11.18                              Example Wordpress Chart (with MySQL)              
https://artifacthub.io/packages/helm/groundhog2...      0.13.0          6.7.1-apache            A Helm chart for Wordpress on Kubernetes          
https://artifacthub.io/packages/helm/devops/wor...      0.12.0          1.16.0                  Wordpress helm chart                              
https://artifacthub.io/packages/helm/camptocamp...      0.6.10          4.8.1                   Web publishing platform for building blogs and ...
https://artifacthub.io/packages/helm/homeenterp...      0.5.0           5.9.3-php8.1-apache     Blog server                                       
https://artifacthub.io/packages/helm/mcouliba/w...      0.1.0           1.16.0                  A Helm chart for Kubernetes                       
https://artifacthub.io/packages/helm/wordpress-...      6.1.1-3.0rc5    master                  Lightweight Wordpress installation with additio...
https://artifacthub.io/packages/helm/wordpress-...      1.0.0           1.1                     This is a package for configuring wordpress and...
https://artifacthub.io/packages/helm/securecode...      4.11.0          4.0                     Insecure & Outdated Wordpress Instance: Never e...
https://artifacthub.io/packages/helm/wordpressm...      1.0.0                                   This is the Helm Chart that creates the Wordpre...
https://artifacthub.io/packages/helm/bitpoke/wo...      0.12.4          v0.12.4                 Bitpoke WordPress Operator Helm Chart             
https://artifacthub.io/packages/helm/bitpoke/wo...      0.12.4          v0.12.4                 Helm chart for deploying a WordPress site on Bi...
https://artifacthub.io/packages/helm/kube-wordp...      0.1.0           0.0.1-alpha             Helm Chart for Wordpress installation on MySQL ...
https://artifacthub.io/packages/helm/riotkit-or...      2.1.0-alpha4    v2.1-alpha4             Lightweight Wordpress installation with additio...
https://artifacthub.io/packages/helm/phntom/bin...      0.0.4           0.0.3                   www.binaryvision.co.il static wordpress           
https://artifacthub.io/packages/helm/gh-shessel...      2.1.12          6.1.1                   Web publishing platform for building blogs and ...
https://artifacthub.io/packages/helm/rock8s/wor...      6.7.1                                                                                     
https://artifacthub.io/packages/helm/sikalabs/w...      0.1.2                                                                                     
https://artifacthub.io/packages/helm/gh-shessel...      6.3.1           6.3.1                   Web publishing platform for building blogs and ...
https://artifacthub.io/packages/helm/wordpressh...      0.1.0           1.16.0                  A Helm chart for Kubernetes                       
https://artifacthub.io/packages/helm/wordpress-...      0.1.0           1.1                     this is chart create the wordpress with suitabl...
https://artifacthub.io/packages/helm/wordpress-...      0.0.1                                   Helm Chart for wordpress-gatsby                   
https://artifacthub.io/packages/helm/bitpoke/bi...      1.8.18          1.8.18                  The Bitpoke App for WordPress provides a versat...
https://artifacthub.io/packages/helm/sonu-wordp...      1.0.0           2                       This is my custom chart to deploy wordpress and...
https://artifacthub.io/packages/helm/wordpress/...      0.2.0           1.1.0                   Wordpress for Kubernetes                          
https://artifacthub.io/packages/helm/uvaise-wor...      0.2.0           1.1.0                   Wordpress for Kubernetes                          
https://artifacthub.io/packages/helm/wordpress-...      1.0.0           2                       This is my custom chart to deploy wordpress and...
https://artifacthub.io/packages/helm/bitpoke/stack      0.12.4          v0.12.4                 Your Open-Source, Cloud-Native WordPress Infras...
https://artifacthub.io/packages/helm/securecode...      4.11.0          v3.8.27                 A Helm chart for the WordPress security scanner...
https://artifacthub.io/packages/helm/wordpresss...      1.1.0           5.8.2                   Web publishing platform for building blogs and ...
https://artifacthub.io/packages/helm/viveksahu2...      1.0.0           2                       This is my custom chart to deploy wordpress and...
https://artifacthub.io/packages/helm/six/wordress       0.2.0           1.1.0                   Wordpress for Kubernetes                          
https://artifacthub.io/packages/helm/jinchi-cha...      0.2.0           1.1.0                   Wordpress for Kubernetes                          
https://artifacthub.io/packages/helm/projet-dev...      0.1.0           1.16.0                  A Helm chart for wordpress deployed on Azure Ku...
https://artifacthub.io/packages/helm/wordpressm...      0.1.0           1.1   

Pour visualiser l'ensemble de chaque ligne, utilisez l'option –max-col-width=0 :

trainee@gateway:~$ helm search hub wordpress  --max-col-width=0
URL                                                                             CHART VERSION   APP VERSION             DESCRIPTION                                                                                                                                                                                       
https://artifacthub.io/packages/helm/kube-wordpress/wordpress                   0.1.0           1.1                     this is my wordpress package                                                                                                                                                                      
https://artifacthub.io/packages/helm/wordpress-mariadb/wordpress                1.0.2           1.0.0                   A Helm chart for deploying Wordpress+Mariadb stack on kubernetes.                                                                                                                                 
https://artifacthub.io/packages/helm/shubham-wordpress/wordpress                0.1.0           1.16.0                  A Helm chart for Kubernetes                                                                                                                                                                       
https://artifacthub.io/packages/helm/bitnami-aks/wordpress                      15.2.13         6.1.0                   WordPress is the world's most popular blogging and content management platform. Powerful yet simple, everyone from students to global corporations use it to build beautiful, functional websites.
https://artifacthub.io/packages/helm/bitnami/wordpress                          24.1.5          6.7.1                   WordPress is the world's most popular blogging and content management platform. Powerful yet simple, everyone from students to global corporations use it to build beautiful, functional websites.
https://artifacthub.io/packages/helm/sikalabs/wordpress                         0.2.0                                   Simple Wordpress                                                                                                                                                                                  
https://artifacthub.io/packages/helm/riftbit/wordpress                          12.1.16         5.8.1                   Web publishing platform for building blogs and websites.                                                                                                                                          
https://artifacthub.io/packages/helm/schichtel/wordpress                        0.7.1           6.6.1                   A Helm chart for WordPress                                                                                                                                                                        
https://artifacthub.io/packages/helm/skywordpress/wordpress                     0.1.0           1.16.0                  A Helm chart for WordPress                                                                                                                                                                        
https://artifacthub.io/packages/helm/rock8s/wordpress                           0.12.4          v0.12.4                 An open source content management system                                                                                                                                                          
https://artifacthub.io/packages/helm/sikademo/wordpress                         2020.11.18                              Example Wordpress Chart (with MySQL)                                                                                                                                                              
https://artifacthub.io/packages/helm/groundhog2k/wordpress                      0.13.0          6.7.1-apache            A Helm chart for Wordpress on Kubernetes                                                                                                                                                          
https://artifacthub.io/packages/helm/devops/wordpress                           0.12.0          1.16.0                  Wordpress helm chart                                                                                                                                                                              
https://artifacthub.io/packages/helm/camptocamp3/wordpress                      0.6.10          4.8.1                   Web publishing platform for building blogs and websites.                                                                                                                                          
https://artifacthub.io/packages/helm/homeenterpriseinc/wordpress                0.5.0           5.9.3-php8.1-apache     Blog server                                                                                                                                                                                       
https://artifacthub.io/packages/helm/mcouliba/wordpress                         0.1.0           1.16.0                  A Helm chart for Kubernetes                                                                                                                                                                       
https://artifacthub.io/packages/helm/wordpress-hardened/wordpress-hardened      6.1.1-3.0rc5    master                  Lightweight Wordpress installation with additional security fixes                                                                                                                                 
https://artifacthub.io/packages/helm/wordpress-mysql-1/wordpress-mysql          1.0.0           1.1                     This is a package for configuring wordpress and mysql on kubertes automatically                                                                                                                   
https://artifacthub.io/packages/helm/securecodebox/old-wordpress                4.11.0          4.0                     Insecure & Outdated Wordpress Instance: Never expose it to the internet!                                                                                                                          
https://artifacthub.io/packages/helm/wordpressmysql/wordpress-mysql             1.0.0                                   This is the Helm Chart that creates the Wordpress and MySQL service with dynamic parameters                                                                                                       
https://artifacthub.io/packages/helm/bitpoke/wordpress-operator                 0.12.4          v0.12.4                 Bitpoke WordPress Operator Helm Chart                                                                                                                                                             
https://artifacthub.io/packages/helm/bitpoke/wordpress-site                     0.12.4          v0.12.4                 Helm chart for deploying a WordPress site on Bitpoke Stack                                                                                                                                        
https://artifacthub.io/packages/helm/kube-wordpress-mysql/kube-wordpress-mysql  0.1.0           0.0.1-alpha             Helm Chart for Wordpress installation on MySQL database                                                                                                                                           
https://artifacthub.io/packages/helm/riotkit-org/wordpress-hardened             2.1.0-alpha4    v2.1-alpha4             Lightweight Wordpress installation with additional security fixes                                                                                                                                 
https://artifacthub.io/packages/helm/phntom/binaryvision-static-wordpress       0.0.4           0.0.3                   www.binaryvision.co.il static wordpress                                                                                                                                                           
https://artifacthub.io/packages/helm/gh-shesselink81-public/wordpress-apache    2.1.12          6.1.1                   Web publishing platform for building blogs and websites.                                                                                                                                          
https://artifacthub.io/packages/helm/rock8s/wordpress-crds                      6.7.1                                                                                                                                                                                                                                     
https://artifacthub.io/packages/helm/sikalabs/wordpress-mysql                   0.1.2                                                                                                                                                                                                                                     
https://artifacthub.io/packages/helm/gh-shesselink81-public/wordpress-nginx     6.3.1           6.3.1                   Web publishing platform for building blogs and websites.                                                                                                                                          
https://artifacthub.io/packages/helm/wordpresshelmchart/wordpress-helm-chart    0.1.0           1.16.0                  A Helm chart for Kubernetes                                                                                                                                                                       
https://artifacthub.io/packages/helm/wordpress-mysql/wordpressmysqlenv          0.1.0           1.1                     this is chart create the wordpress with suitable wordpress                                                                                                                                        
https://artifacthub.io/packages/helm/wordpress-gatsby/wp-gats-helm              0.0.1                                   Helm Chart for wordpress-gatsby                                                                                                                                                                   
https://artifacthub.io/packages/helm/bitpoke/bitpoke                            1.8.18          1.8.18                  The Bitpoke App for WordPress provides a versatile dashboard to create, deploy, scale, manage and monitor WordPress sites in a Kubernetes cluster.                                                
https://artifacthub.io/packages/helm/sonu-wordpress-mysql/mychart               1.0.0           2                       This is my custom chart to deploy wordpress and mysql                                                                                                                                             
https://artifacthub.io/packages/helm/wordpress/wordress                         0.2.0           1.1.0                   Wordpress for Kubernetes                                                                                                                                                                          
https://artifacthub.io/packages/helm/uvaise-wordpress/wordress                  0.2.0           1.1.0                   Wordpress for Kubernetes                                                                                                                                                                          
https://artifacthub.io/packages/helm/wordpress-mysql-helm-chart/mychart         1.0.0           2                       This is my custom chart to deploy wordpress and mysql                                                                                                                                             
https://artifacthub.io/packages/helm/bitpoke/stack                              0.12.4          v0.12.4                 Your Open-Source, Cloud-Native WordPress Infrastructure                                                                                                                                           
https://artifacthub.io/packages/helm/securecodebox/wpscan                       4.11.0          v3.8.27                 A Helm chart for the WordPress security scanner that integrates with the secureCodeBox.                                                                                                           
https://artifacthub.io/packages/helm/wordpressss-app/app                        1.1.0           5.8.2                   Web publishing platform for building blogs and websites.                                                                                                                                          
https://artifacthub.io/packages/helm/viveksahu26/mychart                        1.0.0           2                       This is my custom chart to deploy wordpress and mysql                                                                                                                                             
https://artifacthub.io/packages/helm/six/wordress                               0.2.0           1.1.0                   Wordpress for Kubernetes                                                                                                                                                                          
https://artifacthub.io/packages/helm/jinchi-chart/wordress                      0.2.0           1.1.0                   Wordpress for Kubernetes                                                                                                                                                                          
https://artifacthub.io/packages/helm/projet-devops/wp-chart                     0.1.0           1.16.0                  A Helm chart for wordpress deployed on Azure Kubernete service                                                                                                                                    
https://artifacthub.io/packages/helm/wordpressmysqlapp/wpmysql                  0.1.0           1.1  

Il est aussi possible d'obtenir la sortie au format YAML :

trainee@gateway:~$ helm search hub wordpress --output yaml | more
- app_version: "1.1"
  description: this is my wordpress package
  repository:
    name: kube-wordpress
    url: https://harsh-del.github.io/wordpress-charts/charts/
  url: https://artifacthub.io/packages/helm/kube-wordpress/wordpress
  version: 0.1.0
- app_version: 1.0.0
  description: A Helm chart for deploying Wordpress+Mariadb stack on kubernetes.
  repository:
    name: wordpress-mariadb
    url: https://noor-muradi.github.io/Wordpress/
  url: https://artifacthub.io/packages/helm/wordpress-mariadb/wordpress
  version: 1.0.2
- app_version: 1.16.0
  description: A Helm chart for Kubernetes
  repository:
    name: shubham-wordpress
    url: https://shubhambhardwaj007.github.io/Kubernetes-helm-chart/
  url: https://artifacthub.io/packages/helm/shubham-wordpress/wordpress
  version: 0.1.0
- app_version: 6.1.0
  description: WordPress is the world's most popular blogging and content management
    platform. Powerful yet simple, everyone from students to global corporations use
    it to build beautiful, functional websites.
  repository:
    name: bitnami-aks
    url: https://marketplace.azurecr.io/helm/v1/repo
  url: https://artifacthub.io/packages/helm/bitnami-aks/wordpress
  version: 15.2.13
- app_version: 6.7.1
  description: WordPress is the world's most popular blogging and content management
    platform. Powerful yet simple, everyone from students to global corporations use
    it to build beautiful, functional websites.
  repository:
    name: bitnami
    url: https://charts.bitnami.com/bitnami
  url: https://artifacthub.io/packages/helm/bitnami/wordpress
  version: 24.1.5
- app_version: ""
  description: Simple Wordpress
  repository:
    name: sikalabs
    url: https://helm.sikalabs.io
  url: https://artifacthub.io/packages/helm/sikalabs/wordpress
  version: 0.2.0
- app_version: 5.8.1
  description: Web publishing platform for building blogs and websites.
  repository:
    name: riftbit
    url: https://charts.riftbit.com/
  url: https://artifacthub.io/packages/helm/riftbit/wordpress
  version: 12.1.16
- app_version: 6.6.1
  description: A Helm chart for WordPress
  repository:
    name: schichtel
    url: https://schich.tel/helm-charts
--More--

1.3 - Rechercher dans le Helm Hub

Rendez-vous ensuite à l'adresse du Hub en utilisant un navigateur Web et recherchez mysql :

Dans le résultat retourné, cliquez sur mysql du dépôt Bitnami :

Vous constaterez des informations conernant ce Chart ainsi que des instructions pour l'installer :

1.4 - Ajouter et supprimer un Dépôt

En utilisant les informations prises du Hub, installez maintenant le dépôt bitnami :

trainee@gateway:~$ helm repo add bitnami https://charts.bitnami.com/bitnami
"bitnami" has been added to your repositories

Pour lister les dépôts installés, utilisez la commande helm repo list :

trainee@gateway:~$ helm repo list
NAME    URL                               
bitnami https://charts.bitnami.com/bitnami

Pour mettre à jour les dépôts, utilisez la commande helm repo update :

trainee@gateway:~$ helm repo update
Hang tight while we grab the latest from your chart repositories...
...Successfully got an update from the "bitnami" chart repository
Update Complete. ⎈Happy Helming!⎈

Pour supprimer un dépôt, utilisez la commande helm repo remove <repo>

trainee@gateway:~$ helm repo remove bitnami
"bitnami" has been removed from your repositories
trainee@gateway:~$ helm repo list
Error: no repositories to show

1.5 - La Commande helm search repo

Ajoutez de nouveau le dépôt Bitnami :

trainee@gateway:~$ helm repo add bitnami https://charts.bitnami.com/bitnami
"bitnami" has been added to your repositories

Pour voir le contenu de ce dépôt au format YAML, utilisez la commande helm search repo :

trainee@gateway:~$ helm search repo bitnami --output yaml | more
- app_version: 2.10.4
  description: Apache Airflow is a tool to express and execute workflows as directed
    acyclic graphs (DAGs). It includes utilities to schedule tasks, monitor task progress
    and handle task dependencies.
  name: bitnami/airflow
  version: 22.4.3
- app_version: 2.4.62
  description: Apache HTTP Server is an open-source HTTP server. The goal of this
    project is to provide a secure, efficient and extensible server that provides
    HTTP services in sync with the current HTTP standards.
  name: bitnami/apache
  version: 11.3.0
- app_version: 3.11.0
  description: Apache APISIX is high-performance, real-time API Gateway. Features
    load balancing, dynamic upstream, canary release, circuit breaking, authentication,
    observability, amongst others.
  name: bitnami/apisix
  version: 3.7.0
- app_version: 1.53.0
  description: Appsmith is an open source platform for building and maintaining internal
    tools, such as custom dashboards, admin panels or CRUD apps.
  name: bitnami/appsmith
  version: 5.1.2
- app_version: 2.13.2
  description: Argo CD is a continuous delivery tool for Kubernetes based on GitOps.
  name: bitnami/argo-cd
  version: 7.1.1
- app_version: 3.6.2
  description: Argo Workflows is meant to orchestrate Kubernetes jobs in parallel.
    It uses DAG and step-based workflows
  name: bitnami/argo-workflows
  version: 11.1.0
- app_version: 8.0.11
  description: ASP.NET Core is an open-source framework for web application development
    created by Microsoft. It runs on both the full .NET Framework, on Windows, and
    the cross-platform .NET Core.
  name: bitnami/aspnet-core
  version: 6.3.0
- app_version: 5.0.2
  description: Apache Cassandra is an open source distributed database management
    system designed to handle large amounts of data across many servers, providing
    high availability with no single point of failure.
  name: bitnami/cassandra
  version: 12.1.0
- app_version: 1.16.2
  description: cert-manager is a Kubernetes add-on to automate the management and
    issuance of TLS certificates from various issuing sources.
  name: bitnami/cert-manager
  version: 1.4.0
- app_version: 0.146.0
  description: Chainloop is an open-source Software Supply Chain control plane, a
    single source of truth for metadata and artifacts, plus a declarative attestation
    process.
  name: bitnami/chainloop
  version: 2.1.9
- app_version: 1.16.5
  description: Cilium is an eBPF-based networking, observability, and security for
    Linux container management platforms like Docker and Kubernetes.
--More--

Recherchez maintenant Wordpress dans le dépôt Bitnami :

trainee@gateway:~$ helm search repo wordpress
NAME                    CHART VERSION   APP VERSION     DESCRIPTION                                       
bitnami/wordpress       24.1.5          6.7.1           WordPress is the world's most popular blogging ...
bitnami/wordpress-intel 2.1.31          6.1.1           DEPRECATED WordPress for Intel is the most popu...

La commande précédement exécutée ne retourne que la dernière verstion de Wordpress. Pour voir la liste des versions disponibles, utilisez l'option –versions :

trainee@gateway:~$ helm search repo wordpress --versions | more
NAME                    CHART VERSION   APP VERSION     DESCRIPTION                                       
bitnami/wordpress       24.1.5          6.7.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       24.1.4          6.7.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       24.1.3          6.7.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       24.1.2          6.7.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       24.1.1          6.7.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       24.1.0          6.7.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       24.0.11         6.7.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       24.0.10         6.7.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       24.0.9          6.7.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       24.0.8          6.7.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       24.0.7          6.7.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       24.0.6          6.7.0           WordPress is the world's most popular blogging ...
bitnami/wordpress       24.0.5          6.7.0           WordPress is the world's most popular blogging ...
bitnami/wordpress       24.0.4          6.7.0           WordPress is the world's most popular blogging ...
bitnami/wordpress       24.0.3          6.7.0           WordPress is the world's most popular blogging ...
bitnami/wordpress       24.0.2          6.7.0           WordPress is the world's most popular blogging ...
bitnami/wordpress       24.0.1          6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       24.0.0          6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.29         6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.28         6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.27         6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.26         6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.25         6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.24         6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.23         6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.22         6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.21         6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.20         6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.19         6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.18         6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.17         6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.16         6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.15         6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.14         6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.13         6.6.2           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.12         6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.11         6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.10         6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.9          6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.8          6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.7          6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.6          6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.5          6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.4          6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.3          6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.2          6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.1          6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.1.0          6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.0.15         6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.0.14         6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.0.13         6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.0.12         6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.0.11         6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.0.10         6.6.1           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.0.9          6.6.0           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.0.8          6.6.0           WordPress is the world's most popular blogging ...
bitnami/wordpress       23.0.7          6.6.0           WordPress is the world's most popular blogging ...
--More--

1.6 - La Commande helm show

Pour voir les méta-données d'une version du Chart, il convient d'utiliser la commande helm show chart :

trainee@gateway:~$ helm show chart bitnami/wordpress --version=24.1.5
annotations:
  category: CMS
  images: |
    - name: apache-exporter
      image: docker.io/bitnami/apache-exporter:1.0.9-debian-12-r6
    - name: os-shell
      image: docker.io/bitnami/os-shell:12-debian-12-r34
    - name: wordpress
      image: docker.io/bitnami/wordpress:6.7.1-debian-12-r9
  licenses: Apache-2.0
apiVersion: v2
appVersion: 6.7.1
dependencies:
- condition: memcached.enabled
  name: memcached
  repository: oci://registry-1.docker.io/bitnamicharts
  version: 7.x.x
- condition: mariadb.enabled
  name: mariadb
  repository: oci://registry-1.docker.io/bitnamicharts
  version: 20.x.x
- name: common
  repository: oci://registry-1.docker.io/bitnamicharts
  tags:
  - bitnami-common
  version: 2.x.x
description: WordPress is the world's most popular blogging and content management
  platform. Powerful yet simple, everyone from students to global corporations use
  it to build beautiful, functional websites.
home: https://bitnami.com
icon: https://bitnami.com/assets/stacks/wordpress/img/wordpress-stack-220x234.png
keywords:
- application
- blog
- cms
- http
- php
- web
- wordpress
maintainers:
- name: Broadcom, Inc. All Rights Reserved.
  url: https://github.com/bitnami/charts
name: wordpress
sources:
- https://github.com/bitnami/charts/tree/main/bitnami/wordpress
version: 24.1.5

Pour consultez le fichier README du Chart, il convient d'utiliser la commande helm show readme :

trainee@gateway:~$ helm show readme bitnami/wordpress --version 24.1.5 | more
<!--- app-name: WordPress -->

# Bitnami package for WordPress

WordPress is the world's most popular blogging and content management platform. Powerful yet simple, everyone from students to global corporations use it to build beautiful, functional websites.

[Overview of WordPress](http://www.wordpress.org)

## TL;DR

```console
helm install my-release oci://registry-1.docker.io/bitnamicharts/wordpress
```

Looking to use WordPress in production? Try [VMware Tanzu Application Catalog](https://bitnami.com/enterprise), the commercial edition of the Bitnami catalog.

## Introduction

This chart bootstraps a [WordPress](https://github.com/bitnami/containers/tree/main/bitnami/wordpress) deployment on a [Kubernetes](https://kubernetes.io) cluster using the [Helm](https://helm.sh) package manag
er.

It also packages the [Bitnami MariaDB chart](https://github.com/bitnami/charts/tree/main/bitnami/mariadb) which is required for bootstrapping a MariaDB deployment for the database requirements of the WordPress 
application, and the [Bitnami Memcached chart](https://github.com/bitnami/charts/tree/main/bitnami/memcached) that can be used to cache database queries.

Bitnami charts can be used with [Kubeapps](https://kubeapps.dev/) for deployment and management of Helm Charts in clusters.

## Prerequisites

- Kubernetes 1.23+
- Helm 3.8.0+
- PV provisioner support in the underlying infrastructure
- ReadWriteMany volumes for deployment scaling

## Installing the Chart

To install the chart with the release name `my-release`:

```console
helm install my-release oci://REGISTRY_NAME/REPOSITORY_NAME/wordpress
```

> Note: You need to substitute the placeholders `REGISTRY_NAME` and `REPOSITORY_NAME` with a reference to your Helm chart registry and repository. For example, in the case of Bitnami, you need to use `REGISTRY_
NAME=registry-1.docker.io` and `REPOSITORY_NAME=bitnamicharts`.

The command deploys WordPress on the Kubernetes cluster in the default configuration. The [Parameters](#parameters) section lists the parameters that can be configured during installation.

> **Tip**: List all releases using `helm list`

## Configuration and installation details

### Resource requests and limits

Bitnami charts allow setting resource requests and limits for all containers inside the chart deployment. These are inside the `resources` value (check parameter table). Setting requests is essential for produc
tion workloads and these should be adapted to your specific use case.

To make this process easier, the chart contains the `resourcesPreset` values, which automatically sets the `resources` section according to different presets. Check these presets in [the bitnami/common chart](h
ttps://github.com/bitnami/charts/blob/main/bitnami/common/templates/_resources.tpl#L15). However, in production workloads using `resourcesPreset` is discouraged as it may not fully adapt to your specific needs.
 Find more information on container resource management in the [official Kubernetes documentation](https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/).
--More--

Pour consultez les valeurs du Chart, il convient d'utiliser la commande helm show values :

trainee@gateway:~$ helm show values bitnami/wordpress --version 24.1.5 | more
# Copyright Broadcom, Inc. All Rights Reserved.
# SPDX-License-Identifier: APACHE-2.0

## @section Global parameters
## Global Docker image parameters
## Please, note that this will override the image parameters, including dependencies, configured to use the global value
## Current available global Docker image parameters: imageRegistry, imagePullSecrets and storageClass
##

## @param global.imageRegistry Global Docker image registry
## @param global.imagePullSecrets Global Docker registry secret names as an array
## @param global.defaultStorageClass Global default StorageClass for Persistent Volume(s)
##
global:
  imageRegistry: ""
  ## E.g.
  ## imagePullSecrets:
  ##   - myRegistryKeySecretName
  ##
  imagePullSecrets: []
  defaultStorageClass: ""
  ## Security parameters
  ##
  security:
    ## @param global.security.allowInsecureImages Allows skipping image verification
    allowInsecureImages: false
  ## Compatibility adaptations for Kubernetes platforms
  ##
  compatibility:
    ## Compatibility adaptations for Openshift
    ##
    openshift:
      ## @param global.compatibility.openshift.adaptSecurityContext Adapt the securityContext sections of the deployment to make them compatible with Openshift restricted-v2 SCC: remove runAsUser, runAsGroup an
d fsGroup and let the platform use their allowed default IDs. Possible values: auto (apply if the detected running cluster is Openshift), force (perform the adaptation always), disabled (do not perform adaptati
on)
      ##
      adaptSecurityContext: auto
## @section Common parameters
##

## @param kubeVersion Override Kubernetes version
##
kubeVersion: ""
## @param nameOverride String to partially override common.names.fullname template (will maintain the release name)
##
nameOverride: ""
## @param fullnameOverride String to fully override common.names.fullname template
##
fullnameOverride: ""
## @param commonLabels Labels to add to all deployed resources
##
commonLabels: {}
## @param commonAnnotations Annotations to add to all deployed resources
##
commonAnnotations: {}
## @param clusterDomain Kubernetes Cluster Domain
##
clusterDomain: cluster.local
--More--

Important : Les valeurs par défaut peuvent être surchargées par des valeurs dans un fichier au format YAML.

Pour consultez les méta-données, le fichier README ainsi que les valeurs du Chart, il convient d'utiliser la commande helm show all :

trainee@gateway:~$ helm show all bitnami/wordpress --version 24.1.5 | more
annotations:
  category: CMS
  images: |
    - name: apache-exporter
      image: docker.io/bitnami/apache-exporter:1.0.9-debian-12-r6
    - name: os-shell
      image: docker.io/bitnami/os-shell:12-debian-12-r34
    - name: wordpress
      image: docker.io/bitnami/wordpress:6.7.1-debian-12-r9
  licenses: Apache-2.0
apiVersion: v2
appVersion: 6.7.1
dependencies:
- condition: memcached.enabled
  name: memcached
  repository: oci://registry-1.docker.io/bitnamicharts
  version: 7.x.x
- condition: mariadb.enabled
  name: mariadb
  repository: oci://registry-1.docker.io/bitnamicharts
  version: 20.x.x
- name: common
  repository: oci://registry-1.docker.io/bitnamicharts
  tags:
  - bitnami-common
  version: 2.x.x
description: WordPress is the world's most popular blogging and content management
  platform. Powerful yet simple, everyone from students to global corporations use
  it to build beautiful, functional websites.
home: https://bitnami.com
icon: https://bitnami.com/assets/stacks/wordpress/img/wordpress-stack-220x234.png
keywords:
- application
- blog
- cms
- http
- php
- web
- wordpress
maintainers:
- name: Broadcom, Inc. All Rights Reserved.
  url: https://github.com/bitnami/charts
name: wordpress
sources:
- https://github.com/bitnami/charts/tree/main/bitnami/wordpress
version: 24.1.5

---
# Copyright Broadcom, Inc. All Rights Reserved.
# SPDX-License-Identifier: APACHE-2.0

## @section Global parameters
## Global Docker image parameters
## Please, note that this will override the image parameters, including dependencies, configured to use the global value
## Current available global Docker image parameters: imageRegistry, imagePullSecrets and storageClass
##

## @param global.imageRegistry Global Docker image registry
--More--

1.7 - Installation d'un Chart

Créez un Namespace appelé dof309 dans lequel vous allez installer WordPress :

trainee@gateway:~$ kubectl create namespace dof309
namespace/dof309 created

Créez le fichier wordpress-values.yaml contenant des valeurs qui surchargeront celles du Chart WordPress :

trainee@gateway:~$ vi wordpress-values.yaml
trainee@gateway:~$ cat wordpress-values.yaml
wordpressUsername: helm-user
wordpressPassword: my-pass
wordpressEmail: helm-user@i2tch.loc
wordpressFirstName: Helm
wordpressLastName: User 
wordpressBlogName: Learn Helm!
service:
  type: NodePort

Installez maintenant le Chart WordPress :

trainee@gateway:~$ helm install wordpress bitnami/wordpress --values=wordpress-values.yaml --namespace dof309 --version 24.1.5
NAME: wordpress
LAST DEPLOYED: Fri Dec 20 15:14:17 2024
NAMESPACE: dof309
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
CHART NAME: wordpress
CHART VERSION: 24.1.5
APP VERSION: 6.7.1

Did you know there are enterprise versions of the Bitnami catalog? For enhanced secure software supply chain features, unlimited pulls from Docker, LTS support, or application customization, see Bitnami Premium or Tanzu Application Catalog. See https://www.arrow.com/globalecs/na/vendors/bitnami for more information.

** Please be patient while the chart is being deployed **

Your WordPress site can be accessed through the following DNS name from within your cluster:

    wordpress.dof309.svc.cluster.local (port 80)

To access your WordPress site from outside the cluster follow the steps below:

1. Get the WordPress URL by running these commands:

   export NODE_PORT=$(kubectl get --namespace dof309 -o jsonpath="{.spec.ports[0].nodePort}" services wordpress)
   export NODE_IP=$(kubectl get nodes --namespace dof309 -o jsonpath="{.items[0].status.addresses[0].address}")
   echo "WordPress URL: http://$NODE_IP:$NODE_PORT/"
   echo "WordPress Admin URL: http://$NODE_IP:$NODE_PORT/admin"

2. Open a browser and access WordPress using the obtained URL.

3. Login with the following credentials below to see your blog:

  echo Username: helm-user
  echo Password: $(kubectl get secret --namespace dof309 wordpress -o jsonpath="{.data.wordpress-password}" | base64 -d)

WARNING: There are "resources" sections in the chart not set. Using "resourcesPreset" is not recommended for production. For production installations, please set the following values according to your workload needs:
  - resources
+info https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/

Vérifiez ls statut du deployment de l'application :

trainee@gateway:~$ helm list --namespace dof309
NAME            NAMESPACE       REVISION        UPDATED                                 STATUS          CHART                   APP VERSION
wordpress       dof309          1               2024-12-20 15:14:17.143771785 +0100 CET deployed        wordpress-24.1.5        6.7.1      

1.8 - La Commande helm get

Helm utilise un système de Hooks qui permet au développeurs d'exécuter des tâches à des moments précis. Les Hooks sont :

  • pre-install
  • post-install
  • pre-delete
  • post-delete
  • pre-upgrade
  • post-upgrade
  • pre-rollback
  • post-rollback
  • test

Pour visualiser les Hooks, s'ils existent, il convient d'utiliser la commande helm get hooks :

trainee@gateway:~$ helm get hooks wordpress --namespace dof309
trainee@gateway:~$

Pour consulter les manifests, utilisez la commande helm get manifest :

trainee@gateway:~$ helm get manifest wordpress --namespace dof309 | more
---
# Source: wordpress/charts/mariadb/templates/networkpolicy.yaml
kind: NetworkPolicy
apiVersion: networking.k8s.io/v1
metadata:
  name: wordpress-mariadb
  namespace: "dof309"
  labels:
    app.kubernetes.io/instance: wordpress
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/name: mariadb
    app.kubernetes.io/version: 11.4.4
    helm.sh/chart: mariadb-20.2.1
    app.kubernetes.io/part-of: mariadb
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/instance: wordpress
      app.kubernetes.io/managed-by: Helm
      app.kubernetes.io/name: mariadb
      app.kubernetes.io/version: 11.4.4
      helm.sh/chart: mariadb-20.2.1
  policyTypes:
    - Ingress
    - Egress
  egress:
    - {}
  ingress:
    - ports:
        - port: 3306
        - port: 3306
---
# Source: wordpress/templates/networkpolicy.yaml
kind: NetworkPolicy
apiVersion: networking.k8s.io/v1
metadata:
  name: wordpress
  namespace: "dof309"
  labels:
    app.kubernetes.io/instance: wordpress
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/name: wordpress
    app.kubernetes.io/version: 6.7.1
    helm.sh/chart: wordpress-24.1.5
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/instance: wordpress
      app.kubernetes.io/name: wordpress
  policyTypes:
    - Ingress
    - Egress
  egress:
    - {}
  ingress:
    - ports:
        - port: 8080
        - port: 8443
--More--

Il est possible de revoir les NOTES imprimées à l'écran lors de l'exécution de la commande helm install en utilisant le comande help get notes :

trainee@gateway:~$ helm get notes wordpress --namespace dof309
NOTES:
CHART NAME: wordpress
CHART VERSION: 24.1.5
APP VERSION: 6.7.1

Did you know there are enterprise versions of the Bitnami catalog? For enhanced secure software supply chain features, unlimited pulls from Docker, LTS support, or application customization, see Bitnami Premium or Tanzu Application Catalog. See https://www.arrow.com/globalecs/na/vendors/bitnami for more information.

** Please be patient while the chart is being deployed **

Your WordPress site can be accessed through the following DNS name from within your cluster:

    wordpress.dof309.svc.cluster.local (port 80)

To access your WordPress site from outside the cluster follow the steps below:

1. Get the WordPress URL by running these commands:

   export NODE_PORT=$(kubectl get --namespace dof309 -o jsonpath="{.spec.ports[0].nodePort}" services wordpress)
   export NODE_IP=$(kubectl get nodes --namespace dof309 -o jsonpath="{.items[0].status.addresses[0].address}")
   echo "WordPress URL: http://$NODE_IP:$NODE_PORT/"
   echo "WordPress Admin URL: http://$NODE_IP:$NODE_PORT/admin"

2. Open a browser and access WordPress using the obtained URL.

3. Login with the following credentials below to see your blog:

  echo Username: helm-user
  echo Password: $(kubectl get secret --namespace dof309 wordpress -o jsonpath="{.data.wordpress-password}" | base64 -d)

WARNING: There are "resources" sections in the chart not set. Using "resourcesPreset" is not recommended for production. For production installations, please set the following values according to your workload needs:
  - resources
+info https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/

Pour visualiser les valeurs spécifiées par l'utilisateur dans le fichier de valeurs, utilisez la commande helm get values :

trainee@gateway:~$ helm get values wordpress --namespace dof309
USER-SUPPLIED VALUES:
service:
  type: NodePort
wordpressBlogName: Learn Helm!
wordpressEmail: helm-user@i2tch.loc
wordpressFirstName: Helm
wordpressLastName: User
wordpressPassword: my-pass
wordpressUsername: helm-user

Pour voir toutes les valeurs, il convient d'utiliser la commande helm get values avec l'option –all :

trainee@gateway:~$ helm get values wordpress --all --namespace dof309 | more
COMPUTED VALUES:
affinity: {}
allowEmptyPassword: true
allowOverrideNone: false
apacheConfiguration: ""
args: []
automountServiceAccountToken: false
autoscaling:
  enabled: false
  maxReplicas: 11
  minReplicas: 1
  targetCPU: 50
  targetMemory: 50
clusterDomain: cluster.local
command: []
common:
  exampleValue: common-chart
  global:
    compatibility:
      openshift:
        adaptSecurityContext: auto
    defaultStorageClass: ""
    imagePullSecrets: []
    imageRegistry: ""
    security:
      allowInsecureImages: false
commonAnnotations: {}
commonLabels: {}
containerPorts:
  http: 8080
  https: 8443
containerSecurityContext:
  allowPrivilegeEscalation: false
  capabilities:
    drop:
    - ALL
  enabled: true
  privileged: false
  readOnlyRootFilesystem: true
  runAsGroup: 1001
  runAsNonRoot: true
  runAsUser: 1001
  seLinuxOptions: {}
  seccompProfile:
    type: RuntimeDefault
customHTAccessCM: ""
customLivenessProbe: {}
customPostInitScripts: {}
customReadinessProbe: {}
customStartupProbe: {}
diagnosticMode:
  args:
  - infinity
  command:
  - sleep
  enabled: false
existingApacheConfigurationConfigMap: ""
existingSecret: ""
--More--

Dernièrement pour visualiser toutes les informations, utilisez la commande helm get all :

trainee@gateway:~$ helm get all wordpress --namespace dof309 | more
NAME: wordpress
LAST DEPLOYED: Fri Dec 20 15:14:17 2024
NAMESPACE: dof309
STATUS: deployed
REVISION: 1
CHART: wordpress
VERSION: 24.1.5
APP_VERSION: 6.7.1
TEST SUITE: None
USER-SUPPLIED VALUES:
service:
  type: NodePort
wordpressBlogName: Learn Helm!
wordpressEmail: helm-user@i2tch.loc
wordpressFirstName: Helm
wordpressLastName: User
wordpressPassword: my-pass
wordpressUsername: helm-user

COMPUTED VALUES:
affinity: {}
allowEmptyPassword: true
allowOverrideNone: false
apacheConfiguration: ""
args: []
automountServiceAccountToken: false
autoscaling:
  enabled: false
  maxReplicas: 11
  minReplicas: 1
  targetCPU: 50
  targetMemory: 50
clusterDomain: cluster.local
command: []
common:
  exampleValue: common-chart
  global:
    compatibility:
      openshift:
        adaptSecurityContext: auto
    defaultStorageClass: ""
    imagePullSecrets: []
    imageRegistry: ""
    security:
      allowInsecureImages: false
commonAnnotations: {}
commonLabels: {}
containerPorts:
  http: 8080
  https: 8443
containerSecurityContext:
  allowPrivilegeEscalation: false
  capabilities:
    drop:
    - ALL
  enabled: true
  privileged: false
  readOnlyRootFilesystem: true
--More--

1.9 - Utilisation des NOTES

Vérifiez le nombre de Pods qui ont été démarrés :

trainee@gateway:~$ kubectl get pods -n dof309
NAME                         READY   STATUS    RESTARTS   AGE
wordpress-75b57d8d9b-9t4jw   0/1     Running   0          4m22s
wordpress-mariadb-0          0/1     Running   0          4m22s

Pour se connecter à WordPress, il convient de suivre les instructions de la section NOTES imprimée à l'écran lors de l'exécution de la commande helm install :

trainee@gateway:~$ export NODE_PORT=$(kubectl get --namespace dof309 -o jsonpath="{.spec.ports[0].nodePort}" services wordpress)

trainee@gateway:~$ export NODE_IP=$(kubectl get nodes --namespace dof309 -o jsonpath="{.items[0].status.addresses[0].address}")

trainee@gateway:~$ echo "WordPress URL: http://$NODE_IP:$NODE_PORT/"
WordPress URL: http://192.168.59.100:32236/

trainee@gateway:~$ echo "WordPress Admin URL: http://$NODE_IP:$NODE_PORT/admin"
WordPress Admin URL: http://192.168.59.100:32236/admin

Si vous oubliez le mot de passe de l'interface d'administration de l'installation de WordPress, utilisez la commande suivante :

trainee@gateway:~$ echo Password: $(kubectl get secret --namespace dof309 wordpress -o jsonpath="{.data.wordpress-password}" | base64 -d)
Password: my-pass

1.10 - La Commande helm upgrade

La mise-à-jour d'un Chart se fait en modifiant les valeurs dans le fichier YAML. Dans notre cas, le fichier s'appelle wordpress-values.yaml. Modifiez ce fichier pour porter le nombre de Replicas à 2 et pour diminuer la mémoire et le nombre de millicores du processeur par rapport à leurs valeurs par défaut de 512Mi et de 300m respectivement :

trainee@gateway:~$ vi wordpress-values.yaml 
trainee@gateway:~$ cat wordpress-values.yaml 
wordpressUsername: helm-user
wordpressPassword: my-pass
wordpressEmail: helm-user@i2tch.loc
wordpressFirstName: Helm
wordpressLastName: User 
wordpressBlogName: Learn Helm!
service:
  type: NodePort
replicaCount: 2
resources:
  requests:
    memory: 256Mi
    cpu: 100m

Utilisez maintenant la commande helm upgrade pour mettre à jour le deployment :

trainee@gateway:~$ helm upgrade wordpress bitnami/wordpress --values wordpress-values.yaml -n dof309 --version 24.1.5
Release "wordpress" has been upgraded. Happy Helming!
NAME: wordpress
LAST DEPLOYED: Fri Dec 20 15:33:45 2024
NAMESPACE: dof309
STATUS: deployed
REVISION: 2
TEST SUITE: None
NOTES:
CHART NAME: wordpress
CHART VERSION: 24.1.5
APP VERSION: 6.7.1

Did you know there are enterprise versions of the Bitnami catalog? For enhanced secure software supply chain features, unlimited pulls from Docker, LTS support, or application customization, see Bitnami Premium or Tanzu Application Catalog. See https://www.arrow.com/globalecs/na/vendors/bitnami for more information.

** Please be patient while the chart is being deployed **

Your WordPress site can be accessed through the following DNS name from within your cluster:

    wordpress.dof309.svc.cluster.local (port 80)

To access your WordPress site from outside the cluster follow the steps below:

1. Get the WordPress URL by running these commands:

   export NODE_PORT=$(kubectl get --namespace dof309 -o jsonpath="{.spec.ports[0].nodePort}" services wordpress)
   export NODE_IP=$(kubectl get nodes --namespace dof309 -o jsonpath="{.items[0].status.addresses[0].address}")
   echo "WordPress URL: http://$NODE_IP:$NODE_PORT/"
   echo "WordPress Admin URL: http://$NODE_IP:$NODE_PORT/admin"

2. Open a browser and access WordPress using the obtained URL.

3. Login with the following credentials below to see your blog:

  echo Username: helm-user
  echo Password: $(kubectl get secret --namespace dof309 wordpress -o jsonpath="{.data.wordpress-password}" | base64 -d)

Vérifiez maintenant le nombre de Pods qui ont été démarrés :

trainee@gateway:~$ kubectl get pods -n dof309
NAME                         READY   STATUS    RESTARTS        AGE
wordpress-75b57d8d9b-9t4jw   0/1     Running   1 (18m ago)     24m
wordpress-75b57d8d9b-jtx58   0/1     Running   1 (103s ago)    5m18s
wordpress-779bd5776b-9jz8v   0/1     Running   1 (56s ago)     5m18s
wordpress-mariadb-0          0/1     Running   7 (3m31s ago)   24m

Visualisez les valeurs qui ont été utilisées lors de la mise-à-jour :

trainee@gateway:~$ helm get values wordpress -n dof309
USER-SUPPLIED VALUES:
replicaCount: 2
resources:
  requests:
    cpu: 100m
    memory: 256Mi
service:
  type: NodePort
wordpressBlogName: Learn Helm!
wordpressEmail: helm-user@i2tch.loc
wordpressFirstName: Helm
wordpressLastName: User
wordpressPassword: my-pass
wordpressUsername: helm-user

Exécutez de nouveau la mise-à-jour, cette fois sans spécifier le fichier de valeurs wordpress-values.yaml sur la ligne de commande :

trainee@gateway:~$ helm upgrade wordpress bitnami/wordpress -n dof309 --version 24.1.5
Release "wordpress" has been upgraded. Happy Helming!
NAME: wordpress
LAST DEPLOYED: Fri Dec 20 15:44:46 2024
NAMESPACE: dof309
STATUS: deployed
REVISION: 3
TEST SUITE: None
NOTES:
CHART NAME: wordpress
CHART VERSION: 24.1.5
APP VERSION: 6.7.1

Did you know there are enterprise versions of the Bitnami catalog? For enhanced secure software supply chain features, unlimited pulls from Docker, LTS support, or application customization, see Bitnami Premium or Tanzu Application Catalog. See https://www.arrow.com/globalecs/na/vendors/bitnami for more information.

** Please be patient while the chart is being deployed **

Your WordPress site can be accessed through the following DNS name from within your cluster:

    wordpress.dof309.svc.cluster.local (port 80)

To access your WordPress site from outside the cluster follow the steps below:

1. Get the WordPress URL by running these commands:

   export NODE_PORT=$(kubectl get --namespace dof309 -o jsonpath="{.spec.ports[0].nodePort}" services wordpress)
   export NODE_IP=$(kubectl get nodes --namespace dof309 -o jsonpath="{.items[0].status.addresses[0].address}")
   echo "WordPress URL: http://$NODE_IP:$NODE_PORT/"
   echo "WordPress Admin URL: http://$NODE_IP:$NODE_PORT/admin"

2. Open a browser and access WordPress using the obtained URL.

3. Login with the following credentials below to see your blog:

  echo Username: helm-user
  echo Password: $(kubectl get secret --namespace dof309 wordpress -o jsonpath="{.data.wordpress-password}" | base64 -d)

Visualisez les valeurs qui ont été utilisées lors de la mise-à-jour :

trainee@gateway:~$ helm get values wordpress -n dof309
USER-SUPPLIED VALUES:
replicaCount: 2
resources:
  requests:
    cpu: 100m
    memory: 256Mi
service:
  type: NodePort
wordpressBlogName: Learn Helm!
wordpressEmail: helm-user@i2tch.loc
wordpressFirstName: Helm
wordpressLastName: User
wordpressPassword: my-pass
wordpressUsername: helm-user

Important : Notez que la commande helm a réutilisé les valeurs de la première mise-à-jour.

Vérifiez maintenant le nombre de Pods qui ont été démarrés :

trainee@gateway:~$ kubectl get pods -n dof309
NAME                         READY   STATUS             RESTARTS       AGE
wordpress-5f88d486d7-6hnbp   1/1     Running            0              6m52s
wordpress-mariadb-0          0/1     CrashLoopBackOff   12 (41s ago)   49m

1.11 - La Commande helm history

Helm utilise un système de révisions. Une nouvelle révision est créée à chaque installation, mise-à-jour ou quand il y a un rollback. Pour voir la liste des révisions, utilisez la commande suivante :

trainee@gateway:~$ helm history wordpress -n dof309
REVISION        UPDATED                         STATUS          CHART                   APP VERSION     DESCRIPTION     
1               Fri Dec 20 15:14:17 2024        superseded      wordpress-24.1.5        6.7.1           Install complete
2               Fri Dec 20 15:33:45 2024        superseded      wordpress-24.1.5        6.7.1           Upgrade complete
3               Fri Dec 20 15:44:46 2024        superseded      wordpress-24.1.5        6.7.1           Upgrade complete
4               Fri Dec 20 15:57:01 2024        deployed        wordpress-24.1.5        6.7.1           Upgrade complete

La commande helm get values peut être utilisée pour consulter la liste des valeurs pour chaque révision :

trainee@gateway:~$ helm get values wordpress --revision 3 -n dof309
USER-SUPPLIED VALUES:
replicaCount: 2
resources:
  requests:
    cpu: 100m
    memory: 256Mi
service:
  type: NodePort
wordpressBlogName: Learn Helm!
wordpressEmail: helm-user@i2tch.loc
wordpressFirstName: Helm
wordpressLastName: User
wordpressPassword: my-pass
wordpressUsername: helm-user

trainee@gateway:~$ helm get values wordpress --revision 4 -n dof309
USER-SUPPLIED VALUES:
replicaCount: 1

La commande helm get manifest peut être utilisée pour consulter l'état des ressources Kubernetes pour chaque révision :

trainee@gateway:~$ helm get manifest wordpress --revision 4 -n dof309 | more
---
# Source: wordpress/charts/mariadb/templates/networkpolicy.yaml
kind: NetworkPolicy
apiVersion: networking.k8s.io/v1
metadata:
  name: wordpress-mariadb
  namespace: "dof309"
  labels:
    app.kubernetes.io/instance: wordpress
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/name: mariadb
    app.kubernetes.io/version: 11.4.4
    helm.sh/chart: mariadb-20.2.1
    app.kubernetes.io/part-of: mariadb
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/instance: wordpress
      app.kubernetes.io/managed-by: Helm
      app.kubernetes.io/name: mariadb
      app.kubernetes.io/version: 11.4.4
      helm.sh/chart: mariadb-20.2.1
  policyTypes:
    - Ingress
    - Egress
  egress:
    - {}
  ingress:
    - ports:
        - port: 3306
        - port: 3306
---
# Source: wordpress/templates/networkpolicy.yaml
kind: NetworkPolicy
apiVersion: networking.k8s.io/v1
metadata:
  name: wordpress
  namespace: "dof309"
  labels:
    app.kubernetes.io/instance: wordpress
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/name: wordpress
    app.kubernetes.io/version: 6.7.1
    helm.sh/chart: wordpress-24.1.5
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/instance: wordpress
      app.kubernetes.io/name: wordpress
  policyTypes:
    - Ingress
    - Egress
  egress:
    - {}
  ingress:
    - ports:
        - port: 8080
        - port: 8443
--More--

1.12 - La Commande helm rollback

Pour revenir à une révision précédente il convient d'utilise la commande helm rollback :

trainee@gateway:~$ helm rollback wordpress 3 -n dof309
Rollback was a success! Happy Helming!

Il convient ensuite de vérifier que les valeurs actuelles sont bien celles de la révision ciblée :

trainee@gateway:~$ helm get values wordpress -n dof309
USER-SUPPLIED VALUES:
replicaCount: 2
resources:
  requests:
    cpu: 100m
    memory: 256Mi
service:
  type: NodePort
wordpressBlogName: Learn Helm!
wordpressEmail: helm-user@i2tch.loc
wordpressFirstName: Helm
wordpressLastName: User
wordpressPassword: my-pass
wordpressUsername: helm-user

Le Rollback est clairement indiqué dans la sortie de la commande helm history :

trainee@gateway:~$ helm history wordpress -n dof309
REVISION        UPDATED                         STATUS          CHART                   APP VERSION     DESCRIPTION     
1               Fri Dec 20 15:14:17 2024        superseded      wordpress-24.1.5        6.7.1           Install complete
2               Fri Dec 20 15:33:45 2024        superseded      wordpress-24.1.5        6.7.1           Upgrade complete
3               Fri Dec 20 15:44:46 2024        superseded      wordpress-24.1.5        6.7.1           Upgrade complete
4               Fri Dec 20 15:57:01 2024        superseded      wordpress-24.1.5        6.7.1           Upgrade complete
5               Fri Dec 20 16:09:02 2024        deployed        wordpress-24.1.5        6.7.1           Rollback to 3      

1.13 - La Commande helm uninstall

La désinstallation d'un Chart se fait en utilisant la commande helm uninstall. Par défaut cette commande supprime aussi l'historique des révisions sauf si l'option –keep-history est spécifiée sur la ligne de commande. Supprimez donc le Chart wordpress ainsi que l'historique des révisions :

trainee@gateway:~$ helm uninstall wordpress -n dof309
release "wordpress" uninstalled

La commande helm list démontre cette suppression :

trainee@gateway:~$ helm list -n dof309
NAME    NAMESPACE       REVISION        UPDATED STATUS  CHART   APP VERSION

ainsi qua la sortie de la commande kubectl get deployments :

trainee@gateway:~$ kubectl get deployments -l app=wordpress -n dof309
No resources found in dof309 namespace.

Par contre la commande helm unistall ne supprime pas le PersistentVolumeClaim créé lors de l'installation du Chart :

trainee@gateway:~$ kubectl get pvc -n dof309
NAME                       STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS   VOLUMEATTRIBUTESCLASS   AGE
data-wordpress-mariadb-0   Bound    pvc-71bba44c-9af2-44c9-9e59-103efdf1b29b   8Gi        RWO            standard       <unset>                 56m

Pour supprimer le PersistentVolumeClaim, il est necéssaire d'utilise la commande kubectl delete pvc avec l'option –field-selector :

trainee@gateway:~$ kubectl delete pvc --field-selector metadata.name=data-wordpress-mariadb-0 -n dof309
persistentvolumeclaim "data-wordpress-mariadb-0" deleted

Le PersistentVolumeClaim se trouve de cette manière supprimé :

trainee@gateway:~$ kubectl get pvc -n dof309
No resources found in dof309 namespace

LAB #2 - Supervision de Kubernetes avec le Stack EFK

2.1 - Présentation du Stack EFK

Le stack EFK est composé de trois éléments :

  • Elasticsearch qui assure :
    • le stockage des métriques et journaux,
  • Fluentd qui assure :
    • la collecte des données brutes de Kubernetes,
    • l'envoie des métriques et journaux à Elasticsearch,
  • Kibana qui permet :
    • la visualisation des données stockées dans Elasticsearch.

Avant de poursuivre, arrêtez minikube et augmentez la mémoire de sa machine virtuelle à 12 294 Mo et le nombre de vCPUs à 4 :

trainee@gateway:~$ minikube stop
✋  Stopping node "minikube"  ...
🛑  1 node stopped.

trainee@gateway:~$ minikube delete
🔥  Deleting "minikube" in virtualbox ...
💀  Removed all traces of the "minikube" cluster.

trainee@gateway:~$ minikube config set memory 12294
❗  These changes will take effect upon a minikube delete and then a minikube start

trainee@gateway:~$ minikube config set cpus 4
❗  These changes will take effect upon a minikube delete and then a minikube start

trainee@gateway:~$ minikube start
😄  minikube v1.26.0 on Debian 11.3 (kvm/amd64)
✨  Using the virtualbox driver based on user configuration
👍  Starting control plane node minikube in cluster minikube
🔥  Creating virtualbox VM (CPUs=4, Memory=12294MB, Disk=20000MB) ...
🐳  Preparing Kubernetes v1.24.1 on Docker 20.10.16 ...
    ▪ Generating certificates and keys ...
    ▪ Booting up control plane ...
    ▪ Configuring RBAC rules ...
╭───────────────────────────────────────────────────────────────────────────────────────────────────╮
│                                                                                                   │
│    You have selected "virtualbox" driver, but there are better options !                          │
│    For better performance and support consider using a different driver:                          │
│            - kvm2                                                                                 │
│            - qemu2                                                                                │
│                                                                                                   │
│    To turn off this warning run:                                                                  │
│                                                                                                   │
│            $ minikube config set WantVirtualBoxDriverWarning false                                │
│                                                                                                   │
│                                                                                                   │
│    To learn more about on minikube drivers checkout https://minikube.sigs.k8s.io/docs/drivers/    │
│    To see benchmarks checkout https://minikube.sigs.k8s.io/docs/benchmarks/cpuusage/              │
│                                                                                                   │
╰───────────────────────────────────────────────────────────────────────────────────────────────────╯
🔎  Verifying Kubernetes components...
    ▪ Using image gcr.io/k8s-minikube/storage-provisioner:v5
🌟  Enabled addons: storage-provisioner, default-storageclass
🏄  Done! kubectl is now configured to use "minikube" cluster and "default" namespace by default

2.2 - Installation du Chart elasticsearch

Commencez par installer le repository stable de https://charts.helm.sh :

trainee@gateway:~$ helm repo add stable https://charts.helm.sh/stable
"stable" has been added to your repositories

Installez ensuite le Chart helm elasticsearch :

trainee@gateway:~$ helm install elasticsearch stable/elasticsearch 
WARNING: This chart is deprecated
NAME: elasticsearch
LAST DEPLOYED: Sat Jul 16 11:27:22 2022
NAMESPACE: default
STATUS: deployed
REVISION: 1
NOTES:
This Helm chart is deprecated. Please use https://github.com/elastic/helm-charts/tree/master/elasticsearch instead.

---

The elasticsearch cluster has been installed.

Elasticsearch can be accessed:

  * Within your cluster, at the following DNS name at port 9200:

    elasticsearch-client.default.svc

  * From outside the cluster, run these commands in the same shell:

    export POD_NAME=$(kubectl get pods --namespace default -l "app=elasticsearch,component=client,release=elasticsearch" -o jsonpath="{.items[0].metadata.name}")
    echo "Visit http://127.0.0.1:9200 to use Elasticsearch"
    kubectl port-forward --namespace default $POD_NAME 9200:9200

Patientez quelques minutes afin que tous les Pods affichent un état de READY :

trainee@gateway:~$ kubectl get pods
NAME                                    READY   STATUS    RESTARTS   AGE
elasticsearch-client-7869bf97bb-tb25p   1/1     Running   0          5m50s
elasticsearch-client-7869bf97bb-zvl6h   1/1     Running   0          5m49s
elasticsearch-data-0                    1/1     Running   0          5m49s
elasticsearch-data-1                    1/1     Running   0          2m37s
elasticsearch-master-0                  1/1     Running   0          5m49s
elasticsearch-master-1                  1/1     Running   0          2m37s
elasticsearch-master-2                  1/1     Running   0          65s

Vérifiez ensuite la présence des services elasticsearch-client et elasticsearch-discovery :

trainee@gateway:~$ kubectl get services
NAME                      TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)    AGE
elasticsearch-client      ClusterIP   10.106.34.82   <none>        9200/TCP   8m23s
elasticsearch-discovery   ClusterIP   None           <none>        9300/TCP   8m23s
kubernetes                ClusterIP   10.96.0.1      <none>        443/TCP    10m

2.3 - Installation du Chart fluentd-elasticsearch

Installez le Chart helm fluentd-elasticsearch à partir du repository stable :

trainee@gateway:~$ helm install fluentd stable/fluentd-elasticsearch --set elasticsearch.host=elasticsearch-client
WARNING: This chart is deprecated
W0716 12:20:08.692464    7135 warnings.go:70] spec.template.metadata.annotations[scheduler.alpha.kubernetes.io/critical-pod]: non-functional in v1.16+; use the "priorityClassName" field instead
NAME: fluentd
LAST DEPLOYED: Sat Jul 16 12:20:07 2022
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
1. To verify that Fluentd has started, run:

  kubectl --namespace=default get pods -l "app.kubernetes.io/name=fluentd-elasticsearch,app.kubernetes.io/instance=fluentd"

THIS APPLICATION CAPTURES ALL CONSOLE OUTPUT AND FORWARDS IT TO elasticsearch . Anything that might be identifying,
including things like IP addresses, container images, and object names will NOT be anonymized.

Important : Fluentd a besoin de connaître l’emplacement de l'hôte Elasticsearch. Dans notre cas, la valeur est elasticsearch-client. Notez donc l'utilisation sur la ligne de commande de l'option –set elasticsearch.host=.

Patientez quelques secondes afin que le Pod fluentd-fluentd-elasticsearch-xxxxx affiche un état de READY :

trainee@gateway:~$ kubectl get pods
NAME                                    READY   STATUS    RESTARTS   AGE
elasticsearch-client-7869bf97bb-tb25p   1/1     Running   0          10m
elasticsearch-client-7869bf97bb-zvl6h   1/1     Running   0          10m
elasticsearch-data-0                    1/1     Running   0          10m
elasticsearch-data-1                    1/1     Running   0          6m51s
elasticsearch-master-0                  1/1     Running   0          10m
elasticsearch-master-1                  1/1     Running   0          6m51s
elasticsearch-master-2                  1/1     Running   0          5m19s
fluentd-fluentd-elasticsearch-znvq5     1/1     Running   0          62s

Important : Notez que dans le cas de l'utilisation de minikube, nous n'avons qu'un seul nœud dans le cluster Kubernetes. Pour cette raison, nous avons installé qu'un seul Pod Fluentd avec Helm sans passer par un DaemonSet.

2.4 - Installation du Chart kibana

Kibana a aussi besoin de connaître l'emplacement de l'hôte Elasticsearch. Cette fois-ci, la valeur sera incluse dans un fichier de values. Créez donc le fichier kibana-values.yaml :

trainee@gateway:~$ vi kibana-values.yaml
trainee@gateway:~$ cat kibana-values.yaml
files:
  kibana.yml:
    ## Default Kibana configuration from kibana-docker.
    server.name: kibana
    server.host: "0"
    ## For kibana < 6.6, use elasticsearch.url instead
    elasticsearch.hosts: http://elasticsearch-client:9200
service:
  type: NodePort

Important : Notez la création d'un service de type NodePort. Dans le cas de l'utilisation du DaemonSet, nous aurions créé un service ClusterIP* de type LoadBalancer.

Installez donc le Chart Helm kibana à partir du repository stable en référençant le fichier values kibana-values.yaml :

trainee@gateway:~$ helm install kibana stable/kibana -f kibana-values.yaml
WARNING: This chart is deprecated
NAME: kibana
LAST DEPLOYED: Sat Jul 16 12:22:57 2022
NAMESPACE: default
STATUS: deployed
REVISION: 1
NOTES:
THE CHART HAS BEEN DEPRECATED! 

Find the new  official version @ https://github.com/elastic/helm-charts/tree/master/kibana

To verify that kibana has started, run:

  kubectl --namespace=default get pods -l "app=kibana"

Kibana can be accessed:

  * From outside the cluster, run these commands in the same shell:

    export NODE_PORT=$(kubectl get --namespace default -o jsonpath="{.spec.ports[0].nodePort}" services kibana)
    export NODE_IP=$(kubectl get nodes --namespace default -o jsonpath="{.items[0].status.addresses[0].address}")
    echo http://$NODE_IP:$NODE_PORT

Notez les instructions à la fin de la sortie précédente qui indiquent comment atteindre Kibana de l'extérieur du cluster. Créez donc les deux variables NODE_PORT et NODE_IP et exécutez la commande echo afin d'obtenir le socket de connexion à Kibana. Notez cette information :

trainee@gateway:~$ export NODE_PORT=$(kubectl get --namespace default -o jsonpath="{.spec.ports[0].nodePort}" services kibana)
trainee@gateway:~$ export NODE_IP=$(kubectl get nodes --namespace default -o jsonpath="{.items[0].status.addresses[0].address}")
trainee@gateway:~$ echo http://$NODE_IP:$NODE_PORT
http://192.168.59.101:30812

Patientez quelques minutes afin que le Pod kibana-yyyyyyyyy-xxxxx affiche un état de READY :

trainee@gateway:~$ kubectl get pods
NAME                                    READY   STATUS    RESTARTS   AGE
elasticsearch-client-7869bf97bb-tb25p   1/1     Running   0          14m
elasticsearch-client-7869bf97bb-zvl6h   1/1     Running   0          14m
elasticsearch-data-0                    1/1     Running   0          14m
elasticsearch-data-1                    1/1     Running   0          11m
elasticsearch-master-0                  1/1     Running   0          14m
elasticsearch-master-1                  1/1     Running   0          11m
elasticsearch-master-2                  1/1     Running   0          9m28s
fluentd-fluentd-elasticsearch-znvq5     1/1     Running   0          5m11s
kibana-74cd958bd4-qxmtc                 1/1     Running   0          2m21s

Vérifiez ensuite la présence du service NodePort :

trainee@gateway:~$ kubectl get services
NAME                      TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)         AGE
elasticsearch-client      ClusterIP   10.106.34.82   <none>        9200/TCP        14m
elasticsearch-discovery   ClusterIP   None           <none>        9300/TCP        14m
kibana                    NodePort    10.97.180.37   <none>        443:30812/TCP   2m49s
kubernetes                ClusterIP   10.96.0.1      <none>        443/TCP         16m

2.5 - Génération de Traces dans Kubernetes

Créez maintenant un fichier counter.yaml afin de créer un Pod qui générera des logs de démonstration en continu :

trainee@gateway:~$ vi counter.yaml
trainee@gateway:~$ cat counter.yaml
## counter.yaml
apiVersion: v1
kind: Pod
metadata:
  name: counter
spec:
  containers:
  - name: count
    image: busybox
    args: [/bin/sh, -c, 'i=0; while true; do echo "Demo log $i: $(date)"; i=$((i+1)); sleep 1; done']

Appliquez ce fichier avec la commande kubecl :

trainee@gateway:~$ kubectl apply -f counter.yaml
pod/counter created

Vérifiez que le Pod counter soit bien en état de READY :

trainee@gateway:~$ kubectl get pods
NAME                                    READY   STATUS    RESTARTS   AGE
counter                                 1/1     Running   0          17s
elasticsearch-client-7869bf97bb-tb25p   1/1     Running   0          16m
elasticsearch-client-7869bf97bb-zvl6h   1/1     Running   0          16m
elasticsearch-data-0                    1/1     Running   0          16m
elasticsearch-data-1                    1/1     Running   0          13m
elasticsearch-master-0                  1/1     Running   0          16m
elasticsearch-master-1                  1/1     Running   0          13m
elasticsearch-master-2                  1/1     Running   0          11m
fluentd-fluentd-elasticsearch-znvq5     1/1     Running   0          7m15s
kibana-74cd958bd4-qxmtc                 1/1     Running   0          4m25s

2.6 - Visualisation des Données avec Kibana

Connectez-vous à votre VM Gateway en mode VNC en utilisant Apache Guacamole ou via une connexion RDP.

Ouvrez le navigateur FireFox et saisissez l'adresse que vous avez obtenu en exécutant la commande echo ci-dessus.

Cliquez sur Explore on my own > Management > Index Patterns, ensuite, dans Create index pattern, renseignez la valeur logstash-* et cliquez sur le bouton Next step :

Dans l'étape 2/2, renseignez la valeur de @timestamp puis cliquez sur le bouton Create index pattern :

Cliquez sur le lien Discover dans le menu de Kibana. Sélectionnez logstash-* puis choisissez @timestamp dans Available fields et cliquez sur le bouton Add :

Appliquez un filtre en cliquant sur le champ kubernetes.pod_name :

Cliquez sur la loupe + en face de la ligne counter puis sur le bouton Add en face du nom du champs :


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