Introduction This tutorial covers How to Upgrade SLES 15 to SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Step 1 — Back Up Your System Take a snapshot or backup […]
Introduction Debian 11 Bullseye is built around the ethos of stability and free software. Setting up install and configure rclone on debian 11 on Bullseye leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bullseye freeze. Follow each step carefully and […]
How to Back Up and Restore MySQL Databases with mysqldump on RHEL 7 Regular database backups are the single most important operational task for any MySQL administrator. mysqldump is the built-in logical backup utility that ships with every MySQL and MariaDB installation — it produces plain-text SQL files that can be compressed, transferred off-site, and […]
🟠 High ⏱ 5–30 min Last verified: 21 April 2022 Affected versions: Debian 11 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]
Introduction Setting up configure hashicorp vault on centos stream 9 on a CentOS Stream 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure HashiCorp Vault on CentOS Stream 9, with all the commands you need, the SELinux and firewalld considerations to keep in […]
Introduction This guide explains how to Configure Jenkins Pipelines on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with the standard […]
Introduction This guide explains how to Install Portainer on Debian 11 on Debian 11 Bullseye. Debian Bullseye uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 11 install with the standard repositories […]
Introduction How to Set Up Puppet Agent on CentOS Stream 9 on CentOS Stream 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration […]
🔴 Critical ⏱ 5–30 min Last verified: 18 April 2022 Affected versions: Debian 11 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]
Introduction This guide explains how to Install kubeadm and Set Up a Kubernetes Cluster on Debian 11 on Debian 11 Bullseye. Debian Bullseye uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian […]
