FullStackQuest https://validator.w3.org/feed/docs/rss2.html Home Architecture of a Typical Monitoring & Security Stack (Logs, Metrics, Infra Health) Bash vs Zsh vs Other Shells: What to Use on Servers (Practical Examples) Monitoring vs Observability vs SIEM vs SOC (Explained for Linux Admins) Logging Basics : Log Levels, logrotate, Retention, and rsyslog Forwarding (TCP/TLS) Working with Command History Like a Pro: history, !, Ctrl+R, and Aliases (Practical Examples) Basic Hardware Info on Linux (Practical Guide): lscpu, lsblk, lspci, lsusb, dmesg How to Install Teampass on Debian 13 with a Two-Server Setup (MySQL 8 + Nginx & PHP 8.4) System Updates on Linux Servers: Safe Updates with apt, dnf, and zypper System Updates: Configuring Timezone, Locale, Hostname and <code>/etc/hosts</code> (with Practical Examples) How to Use auditd and Integrate It with Wazuh (With Practical Examples) Basic Linux Commands for Everyday Work: ls, cd, cat, less, tail, grep and find Manual Pages and Help in Linux: man, –help, info and Efficient Searching (Practical Examples) First Login to a Linux Server: TTY, SSH, and Root vs Regular Users Hardening a Two-Server Teampass Setup on Debian with Fail2ban Basic Linux Filesystem Layout for Sysadmins Matomo on Debian 13: 2-Server Setup with Nginx, MariaDB, phpMyAdmin & Fail2ban How to Document MikroTik Branch Routers: From Identity to WAN, VLANs and DHCP Installing a Linux Server: UEFI, Partitions, RAID 1 and Basic Setup Build a 3-Node Vagrant on VirtualBox Lab (with Static Bridged IPs) Installing K3s + K3d and Deploying a K3d Kubernetes Cluster in Docker (with a fully persistent volumes) What Linux is from a sysadmin perspective: distros, LTS, stable vs rolling Choosing the Right Linux Distribution for Your Servers: Debian, Ubuntu, Rocky, Alma, and SUSE HomeLab – Sealed Secrets on k3s (Helm install, kubeseal fix, and end-to-end verification) – Day 12 HomeLab – Wiring Argo CD to GitOps (and fixing SSH + CRD hiccups) – Day 16 HomeLab – Seal TLS Secrets with Bitnami Sealed Secrets + SSH Key for GitOps Commits – Day 13 HomeLab – Making TLS Truly GitOps: Exporting ClusterIssuer, Certificate & Ingress to Git – Day 15 Sealed Secrets on K3s (Vagrant/VirtualBox): A Practical, Step-by-Step Guide with Troubleshooting HomeLab – Mkcert TLS, Helm Scale & Rollback – Day 8 How to setup basic rSyslog Server on Debian 13 HomeLab – Cloning Workers and Verifying Ansible Connectivity – Day 2 HomeLab – Argo CD GitOps: SSH Repo Secret, Connectivity Self-Test, Application Apply & Health Fixes – Day 11 Build a 3-Node k3s Cluster on Vagrant + VirtualBox (Ubuntu 22.04) HomeLab – Moving NGINX TLS from a Manual Secret to cert-manager (with mkcert CA) – Day 14 HomeLab – ConfigMap Index, Helm Upgrade & Rollback – Day 9 HomeLab – GitOps with Argo CD on k3s – Day 10 About Me Hardening a Debian 13 Rsyslog Server with UFW and Fail2Ban HomeLab – HTTPS for nginx.apps.lan (Traefik TLS) – Day 7 HomeLab – Building a Solid Linux Foundation (Kubuntu 25 + VMware + Ansible) – Day 1 HomeLab – Helm on k3s-master & NGINX via Traefik Ingress – Day 6 HomeLab – Install k3s with Ansible (Token, Role & Playbook, kubectl Verify) – Day 4 HomeLab – Pre-flight & Firewall (UFW) for k3s – Day 3 HomeLab – Namespaces, Limits & Quotas in k3s – Day 5 <strong>GNS3 – Basic Lab – How to Add Subnet for Servers and Add the First Debian Server to This Subnet</strong> Debian 11 – Basic server hardening Building a 3-Server Mail Platform with Rspamd, Proxmox Mail Gateway, and MailLab (Roundcube, DKIM, Fail2Ban) GNS3 – Basic lab topology with DHCP and DNS servers GNS3 – Basic lab topology Cloudflare Zero Trust + SSH via Docker