rhcsa linux 8 and 9 -Redhat - ريدهات لنكس

Master Red Hat System Administration: A Practical Guide

This course provides hands-on training for Red Hat system administrators, focusing on practical application through video demonstrations and self-assessment. Each topic is covered with a practical example, ensuring you gain the skills needed to succeed in the certification exam. Practice videos allow you to reinforce your learning and build confidence.

Essential Shell Skills:

• Shell Navigation & Commands: Learn to navigate the command line, execute commands with correct syntax, and utilize input/output redirection (>, >>, |, 2>).
• Text Processing with grep & Regular Expressions: Effectively analyze and filter text data using powerful tools.
• Remote Access with SSH: Securely connect to and manage remote systems.
• User Management: Log in as different users and manage user accounts, including password management and aging.
• File & Directory Management: Create, delete, copy, move, and manage files and directories.
• Permissions: Understand and set standard user/group/other (ugo/rwx) permissions, including hard and soft links.
• System Documentation: Locate and utilize system documentation (man pages, info files, and files in /usr/share/doc).
• Shell Scripting: Create and edit simple shell scripts, incorporating conditional logic (if, test, []) and looping constructs (for).
• Script Input & Output: Process command-line arguments ($1, $2, etc.) and manage the output of shell commands within scripts.

System Management & Maintenance:

• System Boot & Shutdown: Control system boot processes (normal boot, reboot, shutdown) and interrupt the boot process for troubleshooting.
• Process Management: Identify CPU/memory-intensive processes, kill processes, and adjust process scheduling.
• Tuning & Performance: Manage process tuning profiles to optimize system performance.
• Log Analysis: Locate, interpret, and utilize system log files and journals for troubleshooting.
• Journaling: Preserve system journals for auditing and recovery purposes.
• Network Services: Start, stop, and check the status of network services.
• Secure File Transfer: Securely transfer files between systems.
• Storage Management:
  • Partitioning: Create and manage partitions on MBR and GPT disks.
  • Volume Groups & Logical Volumes: Create physical volumes, assign them to volume groups, and create/delete logical volumes.
  • File System Mounting: Configure systems to automatically mount file systems at boot using UUIDs or labels.
  • Non-Destructive Operations: Add new partitions, logical volumes, and swap space without data loss.
  • File System Creation & Management: Create and manage file systems (vfat, ext4, xfs).
  • Network File Systems (NFS): Mount and unmount network file systems using NFS.
  • Autofs: Configure autofs for dynamic mounting of network file systems.
  • Logical Volume Expansion: Extend existing logical volumes.
• File Permissions: Diagnose and correct file permission problems.

Security & Automation:

• Firewall Configuration: Configure and manage the firewall using firewall-cmd/firewalld to restrict network access.
• User & Group Management: Create, delete, and modify local user accounts and groups.
• Password Management: Change passwords and adjust password aging policies.
• Superuser Access: Manage superuser access and permissions.
• SELinux:
  • Configuration: Configure firewall settings using firewall-cmd/firewalld.
  • File Permissions: Manage default file permissions.
  • Key-Based Authentication: Configure key-based authentication for SSH.
  • SELinux Modes: Set enforcing and permissive modes for SELinux.
  • Context Management: List, identify, and restore SELinux file and process contexts.
  • Port Labels: Manage SELinux port labels.
  • Policy Troubleshooting: Diagnose and address routine SELinux policy violations.
• Containerization:
  • Container Image Management: Find and retrieve container images from remote registries, inspect images, and build containers from Containerfiles.
  • Container Orchestration: Manage containers using commands like podman and skopeo.
  • Container Execution: Run, start, stop, and list running containers.
  • Container Services: Run a service inside a container and configure it to start automatically as a systemd service.
  • Persistent Storage: Attach persistent storage to containers.