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
This course is available for "remote" learning and will be available to anyone with access to an internet device with a microphone (this includes most models of computers, tablets). Classes will take place with a "Live" instructor at the date/times listed below.
Upon registration, the instructor will send along additional information about how to log-on and participate in the class.