DevOps Engineer Tutorials

In this lab, you will learn to manage disk partitions and filesystems in Linux. You'll use fdisk to create a new partition, format it with ext4, mount it, configure persistent mounting in /etc/fstab, and create a swap partition, all on a safe secondary virtual disk.

In this challenge, you will try to manage the user account in the Linux platform, such as creating new user accounts, modifying the user account management, and deleting a user account.

In this lab, you will learn how to manage and interpret the results of a Hashcat cracking session, focusing on the potfile, showing cracked passwords, and isolating uncracked hashes.

In this challenge, you will learn how to use grep and regular expressions to extract email addresses and numbers from a file, demonstrating essential Linux text processing skills.

In this lab, you will learn how to integrate Jenkins with a Git source control repository. You'll install the Git plugin, configure a project to pull code from Git, and set up automatic builds using SCM polling.

In this lab, you will learn the complete lifecycle of managing plugins in Jenkins, including how to browse, install, update, configure, and uninstall plugins to extend Jenkins functionality.

In this lab, you will learn the fundamentals of log analysis for monitoring and incident response on a Linux system using `journalctl`. You will practice reviewing, filtering, and exporting system logs to identify and analyze suspicious activities.

In this lab, you will learn the fundamentals of container security by installing Docker, running a basic container, and inspecting its processes and security properties like resource limits.

In this lab, you will learn fundamental network analysis and security practices on Linux. You'll use tools like netstat, ss, tcpdump, ssh, and dig to inspect connections, capture traffic, establish secure remote sessions, and verify DNS security.

In this lab, you will learn the fundamental principles of digital forensics, focusing on evidence acquisition using the `dd` command and ensuring data integrity with cryptographic hashes.

In this lab, you will learn how to harden a Linux system by identifying and disabling unnecessary services and configuring the Uncomplicated Firewall (UFW) to control network traffic.

In this challenge, you will practice fundamental Linux commands to survey a new system. You'll check the environment, identify users, gather system details, monitor performance, and generate a status report, simulating a sysadmin's initial reconnaissance.

In this lab, you will learn the fundamentals of data resilience by creating file backups using tar, simulating data loss, restoring from the backup, and verifying file integrity with checksums.

In this lab, you will learn the basics of the Jenkins user interface by navigating the dashboard, creating your first Freestyle project, running a build, and viewing the results.

In this lab, you will learn the fundamentals of Jenkins Pipelines by creating, configuring, and running a simple Declarative Pipeline from scratch.

In this lab, you will learn how to make your Jenkins jobs more flexible and powerful by using parameters, executing shell scripts, and handling build failures conditionally.

In this lab, you will learn the fundamentals of managing user identities and access controls in a Linux environment, including creating users, setting permissions, and configuring sudo access.

In this lab, you will learn how to establish a basic security baseline for user accounts on a Linux system, verify compliance, and set up auditd for monitoring critical configuration files.