Linux, Cloud & DevOps Tutorials

Practical, hands-on guides covering Linux, cloud infrastructure, Docker, Kubernetes, Python, cybersecurity, AI, and more — written for engineers at every level.

published tutorials: 24,529
topic categories: 21
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Showing 1–12 of 2,258 tutorials

LinuxMay 16, 20261 min read

How to Set Up a DNS Server with Bind9 on Ubuntu 24.04

BIND9 is the most widely deployed DNS server software. This guide configures BIND9 as an authoritative DNS server and a...

LinuxMay 16, 20261 min read

How to Configure a Static IP Address with Netplan on Ubuntu 24.04

Ubuntu 24.04 LTS uses Netplan to manage network configuration. By default, servers use DHCP which can result in IP address...

LinuxMay 16, 20261 min read

How to Set Up NFS File Sharing on Ubuntu 24.04

NFS (Network File System) allows Linux servers to share directories over the network. Client machines mount NFS shares and access...

LinuxMay 16, 20261 min read

How to Configure Samba File Sharing on Ubuntu 24.04

Samba implements the SMB protocol on Linux, enabling file sharing between Linux servers and Windows clients. This guide sets up...

LinuxMay 16, 20261 min read

How to Harden SSH on Ubuntu 24.04

SSH is the primary remote access method for Linux servers and is a common target for brute-force attacks. This guide...

LinuxMay 16, 20261 min read

How to Set Up WireGuard VPN on Ubuntu 24.04

WireGuard is a modern, fast, and secure VPN protocol built into the Linux kernel. It is simpler to configure than...

LinuxMay 16, 20261 min read

How to Configure iptables Firewall Rules on Ubuntu 24.04

iptables is the classic Linux firewall utility that provides fine-grained packet filtering and NAT. While Ubuntu uses UFW as a...

LinuxMay 16, 20261 min read

How to Install Jenkins on Ubuntu 24.04

Jenkins is the leading open-source automation server for CI/CD pipelines. This guide installs the latest LTS Jenkins on Ubuntu 24.04...

LinuxMay 16, 20261 min read

How to Set Up a DNS Server with Bind9 on Ubuntu 26.04

BIND9 (Berkeley Internet Name Domain) is the most widely deployed DNS server software. It handles both authoritative DNS (serving zone...

LinuxMay 16, 20261 min read

How to Install and Configure Postfix Mail Server on Ubuntu 26.04

Postfix is a high-performance, secure, and widely used Mail Transfer Agent (MTA). It handles the SMTP protocol for sending and...

LinuxMay 16, 20262 min read

How to Install Kubernetes with kubeadm on Ubuntu 24.04

kubeadm is the official tool for bootstrapping a production-grade Kubernetes cluster. This guide installs Kubernetes 1.30 on Ubuntu 24.04 LTS...

LinuxMay 16, 20261 min read

How to Install Zabbix 7 on Ubuntu 26.04

Zabbix 7 is an enterprise-grade open-source monitoring solution that collects metrics from servers, network devices, cloud services, and applications. It...