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GL843 - GL843 - Linux Administration (Custom)
Course Description
Prerequisites:
Course Prerequisites
Supported Distributions:
Red Hat Enterprise Linux 8
Course Outline:
Bash Command Interpreter
Role of Command Shell
Logging In
Identifying the Shell
Changing the Shell
Bash: Command Line History
Doing Math
Bash: Configuration Files
Shell and Environment Variables
Key Environment Variables
Bash: "shortcuts"
Communication Channels
File Redirection
Piping Commands Together
Lab Tasks
Login and Discovery
Linux Shells
Bash History
Bash Login Scripts
Shell Variables
Aliases
Redirection and Pipes
Process Administration
What is a Process?
Process States
Viewing Processes
Signals
Tools to Send Signals
Managing Processes
Tuning Process Scheduling
Job Control Overview
Job Control Commands
Lab Tasks
Job Control Basics
Process Management Basics
System Administration
Hardware Discovery Tools
Kernel Hardware Info – /sys/
/sys/ Structure
udev
Managing Linux Device Files
System Boot Method Overview
systemd System and Service Manager
Legacy local bootup script support
System Status – CPU
System Status – Memory
Determining Service to Process Mapping
Real-time Monitoring of Resources — Cgroups
Lab Tasks
Cgroup for Processes
Logging and System Monitoring
System Logging
systemd Journal
systemd Journal's journalctl
Secure Logging with Journal's Log Sealing
Cockpit - Logs
Rsyslog
/etc/rsyslog.conf
Log Management
Log Anomaly Detector
Sending logs from the shell
Lab Tasks
Using the systemd Journal
Setting up a Full Debug Logfile
Remote Syslog Configuration
Remote Rsyslog TLS Configuration
Task Planning
Automating Tasks
at/batch
cron
The crontab Command
crontab Format
/etc/cron.*/ Directories
Anacron
Systemd Timers
Managing Network-Wide Time
Continual Time Sync with NTP
Time Synchronization with Chronyd
Lab Tasks
Creating and Managing User Cron Jobs
Adding System cron Jobs
Introduction to Troubleshooting Labs
Troubleshooting Practice: Automating Tasks
Chrony Client Configuration
Backing up the System
Backup Software
Managing Optical Media
SCSI Tape Drives & Libraries
Backup Examples
Lab Tasks
Using rsync and ssh for Backups
Using tar for Backups
Using cpio for Backups
Creating ISO Images for Backups
Using dump and restore for Backups
Linux Core
Kernel Modules
Configuring Kernel Components and Modules
Handling Module Dependencies
Configuring the Kernel via /proc/
Console
Virtual Terminals
Keyboard & locale configuration
Booting Linux on PCs
GRUB 2
GRUB 2 Configuration
The Boot Loader Specification
GRUB 2 Security
Boot Parameters
Initial RAM Filesystem
init
Systemd local-fs.target and sysinit.target
Legacy local bootup script support
System Configuration Files
RHEL8 Configuration Utilities
Shutdown and Reboot
Lab Tasks
Adjusting Kernel Options
Linux Kernel Driver Compilation
Boot Process
Booting directly to a bash shell
Troubleshooting Practice: Boot Process
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