Linux Administration Essentials

Overview The course of training is designed to provide students with the most important and frequently performed administrative operations for a Linux system. The workshop will have students performing operations and executing commands on the system throughout the course. Students will have the option of typing commands and or cutting and pasting completed commands from the course materials if they would have difficulty typing in entire commands. _ The course can be conducted using either a Rocky Linux or AlmaLinux system. AlmaLinux and Rocky Linux are identical RHEL-rebuilds and are production-ready, enterprise-grade operating systems, just like CentOS used to be and have supplanted CentOS, Scientific Linux, and Whitebox Linux. Audience Profile This course is intended for IT professionals who do not have experience working with Linux, and who are looking for a single three day course that covers specific administrative operations of a Linux system. Prerequisites Previous experience with computer systems which may include the administration of a Windows system. COURSE OUTLINE Installing the System Obtaining the Linux Installation Media Installing Linux Partitioning a Disk for System Installation The Physical Installation Final Configuration Steps Installing Updates A Guided Tour of the GNOME Desktop An Overview of the GNOME Desktop Launching Activities Managing Windows Desktop Settings An Overview of Cockpit Installing and Enabling Cockpit Accessing Cockpit System, Logs, Storage, Networking, Virtual Machines, Accounts Services, Software Updates, Subscriptions, Terminal Connecting to Multiple Servers Using the Bash Shell What is a Shell? Gaining Access to the Shell Entering Commands at the Prompt Getting Information about a Command Bash Command-line Editing Working with the Shell History Filename Shorthand Filename and Path Completion Input and Output Redirection Working with Pipes in the Bash Shell Configuring Aliases Environment Variables Managing Users and Groups User Management from the Command-line Managing Linux systemd Units Understanding systemd Targets Understanding systemd Services systemd Target Descriptions Identifying and Configuring the Default Target Understanding systemd Units and Unit Types Dynamically Changing the Current Target Enabling, Disabling and Masking systemd Units Software Package Management and Updates Repositories Managing Repositories with Software & Updates Managing Packages with APT Performing Updates Network Management An Introduction to NetworkManager Installing and Enabling NetworkManager Basic nmcli Commands Working with Connection Profiles Interactive Editing Configuring NetworkManager Permissions Basic Linux Firewall Configuration with firewalld An Introduction to firewalld Zones Interfaces Services Ports Checking firewalld Status Configuring Firewall Rules with firewall-cmd Identifying and Changing the Default Zone Displaying Zone Information Adding and Removing Zone Services Working with Port-based Rules Creating a New Zone Changing Zone/Interface Assignments Masquerading Adding ICMP Rules Implementing Port Forwarding Managing firewalld using firewall-config Configuring SSH Key-based Authentication An Overview of Secure Shell (SSH) SSH Key-based Authentication Setting Up Key-based Authentication SSH Key-based Authentication from Linux and macOS Clients Managing Multiple Keys SSH Key-based Authentication from Windows 10 Clients Remote Desktop Access with VNC and rdp Secure and Insecure Remote Desktop Access Installing VNC and rdp Starting the VNC Server Connecting to a VNC Server Configuring and Using rdp Using NFS to Share Files with Remote Systems Ensuring NFS Services are running Configuring the Firewall to Allow NFS Traffic Specifying the Folders to be Shared Accessing Shared Folders Mounting an NFS Filesystem on System Startup Unmounting an NFS Mount Point Sharing Files with a Windows Systems using Samba Accessing Windows Resources from the GNOME Desktop Samba and Samba Client Installing a Samba System Configuring the Firewall to Enable Samba Configuring the smbconf File Configuring the [global] Section Configuring a Shared Resource Removing Unnecessary Shares Configuring SELinux for Samba Creating a Samba User Testing the smbconf File Starting the Samba and NetBIOS Name Services Accessing Samba Shares Accessing Windows Shares Setting Up a Web Server Requirements for Configuring a Web Server Installing the Apache Web Server Packages Configuring the Firewall Port Forwarding Starting the Apache Web Server Testing the Web Server Configuring Apache for HTTPS Adding a New Disk Drive to a Linux System Mounted File Systems or Logical Volumes Finding the New Hard Drive Creating Linux Partitions Creating a File System on a Disk Partition An Overview of Journaled File Systems Mounting a File System Configuring the Automatically Mount of a File System Adding a New Disk to an Ubuntu Volume Group and Logical Volume An Overview of Logical Volume Management (LVM) Volume Group (VG) Physical Volume (PV) Logical Volume (LV) Physical Extent (PE) Logical Extent (LE) Getting Information about Logical Volumes Adding Additional Space to a Volume Group from the Command-Line Adding and Managing Swap Space What is Swap Space? Recommended Swap Space for RHEL Identifying Current Swap Space Usage Adding a Swap File to a System Adding Swap as a Partition Adding Space to a LVM Swap Volume Adding Swap Space to the Volume Group Installing KVM Virtualization An Overview of KVM KVM Hardware Requirements Preparing for KVM Virtualization Verifying the KVM Installation Installing the Cockpit Virtual Machines Module Working with Storage Volumes and Storage Pools Creating a Virtual Machine using virt-manager Starting the Virtual Machine Manager Configuring the KVM Virtual System Starting the KVM Virtual Machine Working with Containers Installing the Container Tools Pulling a Container Image Running the Image in a Container Managing a Container Saving a Container to an Image Removing an Image from Local Storage Removing Containers Building a Container with Buildah Building a Container from Scratch