Contents

• about
• Blog
• FaceTrackNoIR - DIY HeadTracking with your Webcam
• Install Arma3 Exile Server on Ubuntu 20.04 - Guest Post by Bigos
• K3S HA Kubernetes Cluster Installation on AlmaLinux
• MDADM - Convert existing Drive to RAID 1 without dataloss
• OpenLDAP Setup with SSH-Authentication on Ubuntu
• Windows 10 5.1 Surround Sound over optical SPDIF - ac3Filter
• Databases
• ElasticSearch
• Install ElasticSearch Cluster
• PostgreSQL
• PostgreSQL Concat if not Null
• PostgreSQL Installation on RHEL Server vie Module Stream
• PostgreSQL Replication with Failover and Switchback
• PostgreSQL SQL Filter Clause
• PostgreSQL Tuning
• Setup HugePages for PostgreSQL
• Update a Joined Table in PostgreSQL
• Upsert in PostgreSQL - Update if exists
• WAL Log Archiving and Point in Time Recovery on PostgreSQL
• Hardware
• Aorus Elite x570 BIOS activate Virtualization
• Aorus Elite x570 BIOS active Wake on Lan
• Linux
• Ansible
• Include Tasks depending on the OS
• Basics
• Permanently mount a drive with fstab
• Rescan Disk Size
• Set Disk-Spindown with hdparm
• Bind - NAMED
• Install Authorative Bind DNS Server on RHEL
• CIFS / SMB
• CIFS Mount Error - error(19) no such device
• CIFS Mount Error - No route to host
• Mount CIFS or SMB Share on Linux
• Containerd
• Configure Registry Mirror for Containerd
• Cron
• Restore Crontab From Backup
• Crypto Policies
• Change Crypto Policy
• Docker
• Add Custom CA SSL Certificates to Docker-Images
• Change Data Directory of Docker
• Clean up Docker Builder Cache
• Create NGINX-Container to redirect domain to another (HTTP 301)
• Docker Configure Insecure Registry and Mirrors
• Docker Limit Log Size
• Stages in Dockerfiles
• Firefox
• Change User Agent String in Firefox
• Firewalls
• Firewalld Guide
• Flatpak
• Setup a local offline Mirror for Flatpaks
• Gnome
• Add Program to Autostart in Gnome
• Gotify
• Setup Gotify with Docker Compose
• Graylog
• Increase JVM Heap Size of Graylog Docker Container
• Grub
• Change Default Kernel in Grub
• Manually recover and boot form GRUB Shell
• Homeassistant
• Run Home Assistant behind a Reverse Proxy
• Java
• Set default Java Version
• KDE
• Add Programm to KDE Systemmenu
• Keepalived
• High Available Virtual IP with Keepalived
• Kernel
• Build the Linux Kernel from Source
• Kickstart
• Create AlmaLinux Kickstart ISO
• Kubernetes
• K3S
• K3S - Use private Regestries
• Kubernetes Ingress with Custom SSL-Cert for HTTPS
• Manifest Examples
• LVM
• Move Logical Volume to different Drive with LVM
• Mkfifo
• Mkfifo - Named Pipes
• Nagios
• Check SSL Expiration Date with Nagios
• NetCat
• NetCat - Check Open Ports
• Network
• Limit Interface Bandwidth with Wondershaper
• NFS
• Setup NFS Server on RHEL
• Show NFS Shares on Remote Server
• NGINX
• NGINX Error 413 Request Entity Too Large
• OpenSSL
• Check SSL-Certificates with OpenSSL
• Generate Self-Signed Certificates with OpenSSL
• Renew SSL-Certificate with OpenSSL
• OpenSuse
• Reset Root Password on OpenSuse
• PipeWire / WirePlumber
• WirePlumber 100% CPU Usage
• Podman
• Podman Configure Insecure Registry
• Use Registry Mirrors with Podman
• ProcFS
• /proc/cmdline
• /proc/net
• /proc/net/tcp
• Proxmox
• Custom SSL Certificate for Proxmox Backup Server
• TrueNas ISCSI Storage for Proxmox Backup Server
• Use qcow2 Disk Image as Proxmox VM
• Raspberry Pi
• Display CPU Temperature on Raspberry Pi
• Red Hat
• Change a Lost Root Password on Red Hat Linux
• DNF Package Manager
• Restic Backup
• Restic OpenSource Backup-Tool for Linux and Windows
• RPM
• Rsync
• Rsync Cheat Sheet
• SAR
• Monitor Network Stats with sar
• Snap
• Install Snap on AlmaLinux
• SSH
• Configure SSH Jumphost
• Swap
• Extend SWAP with LVM
• SysVInit
• Manage Service with SysVInit
• TMUX
• TMUX Parallel Command Execution
• Traefik
• Add Custom SSL Certificate to Traefik
• Useful Links and Videos
• Useful Links and Videos
• User Management
• Grant sudo-privileges to users
• Set User Password
• ZFS
• Limit Memory used for ZFS ARC Cache
• Programming
• Go
• Download Go Dependencies for offline CICD
• Errors and Solutions
• POST Request Status 422 - Unprocessable Entity
• Go Snippets
• Use Air for Live-Reload in Go-Projects
• Use PostgreSQL Connection in GO with raw SQL Statements
• Hugo
• Frontmatter Aliases - failed to unmarshal YAML: yaml: line 5: found character that cannot start any token
• NextJS
• Connect to PostgreSQL with NextJS and NodePG
• Deploy your NextJS App with Docker
• Import Version from package.json in NextJS
• PineTime
• Test Change on InfinitTime with InfiniSim