Posts on Besmir Zanaj

The problem Ask anyone where their servers get time from and the answer is almost always pool.ntp.org, time.google.com or time.cloudflare.com.

The problem You’ve decided to run your own authoritative DNS.

Introduction Helm Chart Repository APT and YUM Package Repository Debian / Ubuntu RHEL / CentOS / AlmaLinux Introduction Over time I have been packaging some tools and applications that I use frequently across my homelab and work environments.

Introduction Prerequisites for Technitium DNS Technitium installation procedure On the docker host On the Raspberry PI host Technitium High Availability setup API token creation Backup job creation Backup job scheduling Update (July 2026): Technitium DNS…

Introduction Running the probe as a docker container Running the probe in Kubernetes Prerequisites Create the Kubernetes namespace Generate the SSH keypair Create the kubernetes secret containing the SSH key pair Create the volume to store the probe status

Introduction Prerequisites Procedure On the host OS On the VM Introduction When using Virtualbox, after creating the VMs, and even after specifying their disks as fake SSDs to the guest OS, the TRIM operations will not run and the disk space will not get…

Introduction Prerequisites Prepare the nodes Installing RKE2 Using Kubernetes Agent nodes installation Rancher Rancher installation Accessing the Rancher GUI Longhorn Longhorn Install Introduction I finally got my CKA Certificate and out of curiosity star…

Introduction The service Building the docker image Testing the container Implementing echoip as a docker-compose service Explaining the docker-compose Traefik options Adding GeoIP data Using the service Update 2023-05 - Implementing with Podman instead of…

Introduction The problem The fix Introduction Using Ubuntu as my daily driver I have to also join work calls and one of the devices I use is a bluetooth headset with a USB dongle.

Initial analysis How Control Groups Are Organized The Linux Process Model The Cgroup Model Available Subsystems in the Linux kernel CFS Tunable Parameters Ceiling Enforcement Tunable Parameters Limitig apache process to 80% CPU usage Implementation in Pup…

Table of Content Table of Content Basic usage of ethtool Getting SFP and media info Getting SFP diagnostic info from all interfaces Sometimes I have faced issues in fiber connections between computers and switches and most of the time I was remote and just

Table of Content Table of Content Introduction Project Repository Step by step instructions Wireguard server install Troubleshooting Client Setup Mobile phone VPN client setup Windows desktop client Introduction Last year had to help a friend build a Wire…

Table of Content Table of Content Setting up the project Terraform credentials Variables management VM management Considerations when creating VMs Proxmox API is slow Use cloud-init VM customizations HDD controllers LXC Container resource management Concl…

Table of Content Table of Content Homelab Infrastructure Packer image building Packer project repository Secrets management Building images Ubuntu Rocky Linux Things that I spent more time Disk configuration Cloud-init Results Last year I started to serio…

Table of Content Table of Content Web hosting platform Migration preparations Folder preparations Cleanup and posting on production site Next steps Original site was located at Blogger CloudAlbania but that platform does not provide the editing tools I ne…

About me page.

Table of Content Table of Content Preparing the Ansible host and FreeIPA repository Installing FreeIPA Configure FreeIPA for RFC4519 and vSphere Initial configuration for FreeIPA Configure vSphere Authentication for FreeIPA Was setting up a new FreeIPA se…

Table of Content Table of Content Introduction Install certbot Introduction Sometimes we need to get a Let’s Encrypt SSL certificate for a system that might not be connected in the internet or where the certbot client is not able to be installed.

Table of Content Table of Content Introduction Server recommendations Setting up the Foreman server Configure the OS Install Katello & Foreman Install and configure the ansible server Using Foreman ansible collections Managing Foreman - Your first playbook

Table of Content Table of Content Introduction Add the new version in the PATH Link libraries Curl Introduction Sometimes we are still managing very old hardware or OS versions and that we have nothing in our hands to change it till it phases out.

Spent some time on this mounting an iSCSI LUN from a NetApp volume.

UPDATE - FEB 2022: This guide is a bit obsolete by now.

If you are using PowerShell and in the console or the scripts you need to have your public IP address, then Ripe NCC can really help you get this.

Welcome :) I created this blog to log sysadmin and cloud systems activities or articles.