DevOps Engineer Tutorials

Learn essential Linux file system and disk management skills in this hands-on lab. Learn to use key commands like df, du, dd, and fdisk to monitor disk usage, manage virtual disks, and maintain file system integrity. This lab provides practical experience in tasks crucial for system administrators and power users.

In this lab, you will learn fundamental Linux commands to test and troubleshoot network connectivity, from checking the local machine to resolving external hostnames.

In this lab, you will learn the fundamental steps to set up GitHub Actions. You will create a repository on GitHub, clone it to a local environment, and establish the necessary directory structure for workflows.

In this lab, you will learn how to create a basic GitHub Actions workflow to build and test a Node.js application, covering environment setup, dependency installation, and test execution.

In this lab, you will learn the fundamental Linux commands for file system navigation, including listing files, creating directories, and copying, moving, and removing files and directories.

In this lab, you will learn how to orchestrate complex workflows by defining dependencies between jobs, ensuring that tasks like deployment only happen after a successful build.

In this lab, you will learn the fundamental process of managing software on a Debian-based Linux system. You will practice updating package lists, installing, upgrading, listing, and removing software using the `apt` and `dpkg` command-line tools.

In this lab, you will learn how to persist workflow data using build artifacts. You will configure a workflow to upload a build directory so it can be downloaded later.

In this lab, you will learn how to configure a static IP address on a Linux system using netplan, and then revert the configuration back to DHCP.

In this lab, you will learn how to install and configure the Uncomplicated Firewall (UFW) on a Linux system to manage basic network security rules.

In this lab, you will learn how to define a GitHub Actions workflow, specify the runner environment using runs-on, and execute simple shell commands using the run keyword.

In this lab, you will learn how to increase the virtual memory of a Linux system by creating, enabling, and managing a swap file, which acts as virtual RAM.

In this lab, you will learn the fundamental Linux commands for managing file and directory permissions, including creating files, changing permissions with chmod, and altering ownership with chown.

In this lab, you will learn how to diagnose and resolve a common network connectivity issue on a Linux system: DNS resolution failure. You will learn to isolate the problem, inspect DNS settings, correct them, and verify the fix.

In this lab, you will learn how to use the `actions/checkout` action in GitHub Actions to access repository files and verify them using workflow logs.

In this lab, you will learn the fundamental Linux commands for user account management, including creating, modifying, and deleting user accounts, and granting administrative privileges.

In this lab, you will learn the fundamental steps to create a GitHub Actions workflow. You will initialize a Git repository, create the necessary directory structure, define workflow triggers and jobs in a YAML file, and commit your changes to simulate a CI/CD process.

In this lab, you will learn how to securely manage sensitive information in GitHub Actions by setting up repository secrets and referencing them in your workflows.