LCE500 - CentOS 8 Linux (RHEL 8 / Oracle Linux 8) - System Administrator

• LCE500 - CentOS 8 Linux (RHEL 8 / Oracle Linux 8) - System Administrator
  • Contents
  • Prerequisites
    • Hardware
    • Software
    • Internet
  • Using our infrastructure
  • Training Program
  • Skills Assessment

• A computer running either MacOS, Linux, Windows™ or Solaris™,
• QWERTY US Keyboard,
• 4 GB of RAM,
• Headphones,
• A mic (optional).

• Chrome, Edge or Firefox web browser.

• A fast, direct (no proxy or VPN), Internet connection (4G minimum),
• Access to : https://itraining.network, https://ittraining.team and subdomains thereof.
• Accessible ports : 80, 443.

The Instructor will assign you an ID ranging from Trainee01 to Trainee10.

In order to access our infrastructure, you will first need to login to one of our gateways using SSH:

Ask the Instructor for the password.

Once you are connected, use the following command to connect to your VM:

ssh -l trainee 10.0.2.45

If, for any reason, you cannot login via SSH use your Internet browser to navigate to your login page:

Enter your ID and ask the Instructor for the password.

Once logged in, click on the CentOS8_SSH_10.0.2.45 link. You will be logged into the VM automatically.

The VM comes with two pre-configured accounts :

• LCE500 - CentOS 8 Linux (RHEL 8 / Oracle Linux 8) - System Administrator
  • Prerequisites
    • Hardware
    • Software
    • Internet
  • Using our infrastructure
  • Training Program
  • Skills Assessment

• LCE501 - Managing Users and Groups
  • Presentation
    • /etc/nsswitch.conf
    • The getent Command
    • The /etc/group and /etc/gshadow files
    • The /etc/passwd and /etc/shadow files
  • Commands
    • Groups
      • groupadd
      • groupdel
      • groupmod
      • newgrp
      • gpasswd
    • Users
      • useradd
      • userdel
      • usermod
      • passwd
      • chage
  • Configuration
  • LAB #1 - Managing Users and Groups
  • LAB #2 - su and su -
  • sudo

• LCE502 - Package Management
  • LAB #1 - Compiling Software
    • 1.1 - ./configure
    • 1.2 - make
    • 1.3 - make check
    • 1.4 - make install
  • LAB #2 - The rpm Command
    • 2.1 - Configuration
    • 2.2 - Usage
  • LAB #3 - The dnf Command
    • 3.1 - Presentation
    • 3.2 - Configuration
    • 3.3 - Repositories
    • 3.4 - Searching for Packages
    • 3.5 - Viewing Information on and Downloading a Package
    • 3.6 - Installing a Package
    • 3.7 - Updating Packages
    • 3.8 - Deleting Packages
  • Shared Libraries
    • Presentation
      • Introduction
      • Shared Object Locations
      • ld-linux.so.2
    • The ldd Command
    • The /etc/ld.so.conf File
    • The ldconfig Command

• LCE503 - Managing File Permissions
  • Presentation
  • Preparation
  • LAB #1 - Basic Unix File Permissions
    • 1.1 - Changing Permissions with chmod
      • Symbolic Mode
      • Octal Mode
      • The umask Command
    • 1.2 - Changing the Owner or the Group with chown and chgrp
      • The chown Command
      • The chgrp Command
  • LAB #2 - Advanced Unix Permissions
    • 2.1 - SUID/SGID bit
    • 2.2 - Inheritance Flag
    • 2.3 - Sticky bit
  • LAB #3 - Extending Linux Permissions using ACLs and Attributes
    • 3.1 - ACLs
    • 3.2 - Attributes

• LCE504 - Managing Disks and Filesystems
  • Peripherals
  • Partitions
  • Partitioning
    • LAB #1 - Partioning your Disk with the fdisk Command
    • LAB #2 - Modifier les Drapeaux des Partitions avec fdisk
  • Logical Volume Manager (LVM)
    • LAB #3 - Linear Logical Volumes
      • Physical Volumes (PV)
      • Volume Groups (VG) and Physical Extents (PE)
      • Logical Volumes (LV)
    • LAB #4 - Grow a Volume
    • LAB #5 - Snapshots
    • LAB #6 - Deleting Volumes
    • LAB #7 - Mirrored Volumes
    • LAB #8 - Changing LVM Attributes
    • LAB #9 - Striped Volumes
    • LAB #10 - Managing Meta-data
  • Journaled Filesystems
    • Ext3
      • Managing Ext3
      • LAB #11 - Converting Ext3 to Ext2
      • LAB #12 - Converting Ext2 to Ext3
      • LAB #13 - Using another PArtition for the Journal
      • LAB #14 - Changing the File System Check interval on an ext3 Filesystem
    • Ext4
      • LAB #15 - Creating an Ext4 Filesystem
      • LAB #16 - Adding a Label to an Ext4 Filesystem
      • LAB #17 - Converting Ext3 to Ext4
    • XFS
      • LAB #18 - Creating an XFS Filesystem
      • LAB #19 - Adding a Label to an XFS Filesystem

• LCE505 - Process Scheduling
  • cron
    • The /etc/crontab file
    • Time Fields
    • User Crontabs
  • anacron
  • at

• LCE506 - Archiving and Compression
  • Traditional Backup Tools
    • Preparation
    • The tar Command
      • Presentation
      • LAB #1 - Working with the tar Command
      • The GPL tar Commande and Compression
    • The cpio Command
      • Presentation
      • LAB #2 - Working with the cpio Command
    • The dd Command
      • Presentation
      • LAB #3 - Working with the dd Command
    • The dump et restore Commands
      • Presentation
    • LAB #4 - System Backups
      • Backing up the Installed Package List
      • Backing up the Disk Structure
      • Backing up Mount Points
      • Backing up the Boot Loader
        • GRUB Legacy
        • GRUB 2 on BIOS
        • GRUB 2 on EFI
      • Backing up User Files
    • Rsync
      • Presentation
      • LAB #5 - Working with the rsync Command
  • Compression
    • The gzip Command
      • Presentation
      • LAB #4 - Working with the gzip Command
    • The bzip2 Command
      • Presentation
      • LAB #5 - Working with the bzip2 Command
    • The xz Command
      • Presentation
      • LAB #6 - Working with the xz Command
    • Other Compression Utilities

• LCE507 - Process Management
  • Presentation
  • Process Types
  • Process Commands
    • The ps Command
    • The pgrep Command
    • The pstree Command
    • The top Command
    • The fg, bg and jobs Commands
    • The wait Command
    • The nice Command
    • The renice Command
    • The nohup Command
    • The kill Command
    • The pkill Command

• LCE508 - Managing Logs
  • Presentation
  • The dmesg Command
  • Security Logging
    • The last Command
    • The lastlog Command
    • The lastb Command
    • The /var/log/secure File
  • The /var/log/audit/audit.log File
    • Managing Audit Events
      • auditd
      • auditctl
    • Viewing Audit Events
      • The aureport Command
      • The ausearch Command
  • The /var/log/messages File
  • Applications
  • rsyslog
    • Priorities
    • Facilitiess
    • The /etc/rsyslog.conf File
      • Modules
      • Global Directives
      • Rules
        • Facility.Priority
        • Facility!Priority
        • Facility=Priority
        • Using the * Wildcard
        • n Facilities with Identical Priorities
        • n Selectors with Identical Actions
  • The logger Command
  • The logrotate Command
  • journald
    • Using Journald
      • Application Specific Messages
      • Boot Messages
      • Priority Specific Messages
      • Messages from a Specific Date Range
      • Real Time Messages
      • Searching with Key Words

• LCE509 - Printer Management
  • Cups
    • Protocols
    • Packages
    • Daemon
    • The /etc/cups/cupsd.conf File
    • Filters
    • Backends
    • Logs
    • Printers
    • Administration
      • The lpstat Command
      • The lpadmin Command
      • The accept et cupsenable Commands
      • Classes
      • The /etc/cups/printers.conf File
      • The /etc/cups/classes.conf File
      • The cancel Command
      • The lpmove Command
      • Web Interface

• LCE510 - System Startup and Shutdown
  • System Startup
    • Boot Loader
      • BIOS Systems
      • EFI Systems
      • GRUB 2
        • The /boot/grub/grub.cfg File
        • The /etc/default/grub file
        • Files in the /etc/grub.d directory
    • Initramfs
      • The init Script
    • Kernel Booting Process
  • Systemd
    • LAB #1 - The systemctl Command
    • LAB #2 - Configuration Files
      • 2.1 - Default Configuration Files
      • 2.1 - Overloading Default Configuration Files
    • LAB #3 - The systemd-analyze Command
    • LAB #4 - Targets
      • 4.1 - Checking the Target Dependencies
      • 4.2 - The Default Target
        • Checking the Default Target
        • Changing the Default Target
        • Changing the Default Target for the Current Session
    • LAB #5 - Managing Services
      • 5.1 - Single Service Instances
      • 5.2 - Multiple Instance Services
      • 5.3 - Disallowing Modifications to a Service Status
  • LAB #6 - System Shutdown
    • 6.1 - The shutdown Command
    • 6.2 - The reboot Command
    • 6.3 - The halt Command
    • 6.4 - The poweroff Command

• LCE511 - Training Validation
  • Course Materials
  • Reminder of the Training Program
    • Day #1
    • Day #2
    • Day #3
    • Day #4
  • Training Evaluation
  • Exam - Acquired knowledge

Copyright © 2022 Hugh Norris - Non-contractual document. The Training Program may be modified without notice.