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RedHat System Administration I (RH124)


   

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RedHat System Administration I (RH124)

System Administration-I Introducation

Red Hat System Administration I (RH124) is designed for IT professionals without previous Linux system administration experience.
The course is intended to provide students with Linux administration "survival skills" by focusing on core administration tasks. * Red Hat System Administration I also provides a foundation for students planning to become full-time Linux system administrators by introducing key command-line concepts and enterprise-level tools.

Topics In Automation with Ansible

  • Accessing the Command Line
  • Managing Files From the Command Line
  • Getting Help in Red Hat Enterprise Linux
  • Creating, Viewing, and Editing Text Files
  • Managing Local Linux Users and Groups
  • Controlling Access to Files with Linux File System Permissions
  • Monitoring and Managing Linux Processes
  • Controlling Services and Daemons
  • Configuring and Securing OpenSSH Service
  • Analyzing and Storing Logs
  • Managing Red Hat Enterprise Linux Networking
  • Archiving and Copying Files Between Systems
  • Installing and Updating Software Packages
  • Accessing Linux File Systems
  • Using Virtualized Systems
  • Comprehensive Review

Outline Of This Course:


In this chapter We will learn How to Use Bash shell and
What is syntax to enter commands at a Linux console.
Launching an applications in a GNOME desktop environment.
Use Bash features to run commands from a shell prompt using fewer keystrokes.

The Linux File System Hierarchy.
Identify the purpose for important directories on a Linux system.
Specify files using absolute and relative path names.
Create, copy, move, and remove files and directories using command-line utilities.
Match one or more file names using shell expansion as arguments to shell commands.

Reading Documentation Using man Command
Reading Documentation Using man Command
Use the pinfo GNU Info reader.
Use the Red Hat Package Manager (RPM) package documentation.
Use the redhat-support-tool command.

Redirect the text output of a program to a file or to another program.
Edit existing text files and create new files from the shell prompt with a text editor.
Copy text from a graphical window to a text file using a text editor running in the graphical environment.

Explain the role of users and groups on a Linux system and how they are understood by the computer.
Run commands as the superuser to administer a Linux system
Create, modify, lock, and delete locally defined user accounts.
Create, modify, and delete locally defined group accounts.
Lock accounts manually or by setting a password-aging policy in the shadow password file.

Explain how the Linux file permissions model works.
Change the permissions and ownership of files using command-line tools.
Configure a directory in which newly created files are automatically writable by members of the group which owns the directory, using special permissions and default umask settings.

List and interpret basic information about processes running on the system.
Control processes in the shell's session using bash job control.
Terminate and control processes using signals.
Monitor resource usage and system load due to process activity.

List system daemons and network services started by the systemd service and socket units.
Control system daemons and network services using systemctl.
Difference between RHEL 6 And RHEL 7

Log into a remote system using ssh to run commands from a shell prompt.
Set up ssh to allow secure password-free logins by using a private authentication key file.
Customize sshd configuration to restrict direct logins as root or to disable password-based authentication.

Describe the basic syslog architecture in Red Hat Enterprise Linux 7.
Interpret entries in relevant syslog files to troubleshoot problems or review system status.
Find and interpret log entries in the systemd journal to troubleshoot problems or review system status.
Configure systemd-journald to store its journal on disk rather than in memory.
Maintain accurate time synchronization and time zone configuration to ensure correct timestamps in system logs.

Explain fundamental concepts of computer networking.
Test and review current network configuration with basic utilities.
Manage network settings and devices with nmcli and NetworkManager.
Modify network settings by editing the configuration files.
Configure and test system host name and name resolution.

Use tar to create new compressed archive files and extract files from existing archive files.
Copy files securely to or from a remote system running sshd.
Securely synchronize the contents of a local file or directory with a remote copy.

Register systems with your Red Hat account and entitle them to software updates for installed products.
Explain what an RPM package is and how RPM packages are used to manage software on a Red Hat Enterprise Linux system.
Find, install, and update software packages using the yum command.
Enable and disable use of Red Hat or third-party YUM repositories.
Examine and install downloaded software package files.

Identify the file system hierarchy.
Access the contents of file systems.
Use hard links and symlinks to make multiple names.
Search for files on mounted file systems.

Install a Red Hat Enterprise Linux system as a host for running virtual machines.
Perform an interactive install of Red Hat Enterprise Linux on a virtual machine.

Practice skills learned in Red Hat System Administration I


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