Programster's Blog

Tutorials focusing on Linux, programming, and open-source

letsencrypt Certbot Cloudflare lets-encrypt

Cloudflare - Create API Key for Let's Encrypt DNS Challenges

Learn how to create an API Key in cloudflare for granting the ability to generate TLS certificates through Let's Encrypt.

storage Kubernetes Longhorn persistent-storage

Christian Lempa - Storage and Backup in Kubernetes

A timestamped video from Christian Lempa on installing and using Longhorn for persistent storage in Kubernetes.

Kubernetes

Kubernetes CLI Cheatsheet

My personal cheatsheet for Kubernetes commands.

backups Proxmox Debian-12 proxmox-backup-server

Deploy Proxmox Backup Server On Debian 12

Learn how to deploy Proxmox Backup Server on Debian 12.

Bookstack

Deploy Bookstack

Learn how to deploy BookStack through the use of Docker.

install Rundeck

Debian 12 - Manually Install Rundeck

Learn how to manually install Rundeck on Debian 12, rather than deploy it through Docker.

Ansible

Debian 12 - Install Ansible

Instructions for installing Ansible on Debian 12.

LibreOffice

Librecalc - Set Allowed Values

Learn how to restrict cells to allowing only certain defined values. This video tutorial demonstrates doing this for creating timesheets.

security Proxmox firewall

Configuring The Proxmox Firewall

Learn how to configure the firewall in Proxmox.

networking

Network Interfaces File Cheatsheet

A cheatsheet for managing the /etc/network/interfaces configuration files.

Kubernetes load-balancer

Debian 12 - Set Up Nginx Load Balancer For K3s

Set up a load balancer on Debian 12 for a K3s cluster.

Kubernetes K3s

Install K3s Server On Debian 12

Learn how deploy K3s on Debian 12.

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Programster's Blog Ⓒ 2025