Recent posts:

• ISC 2025

  Summary of my visit at the ISC conference in Hamburg

  submitted 2025-06-09T11:42:11+02:00 to Misc with tags: isc 2025 hpc conference

• dupfs - the duplication filesystem

  a simpe FUSE filesytem the duplicates writes

  submitted 2025-03-18T18:35:47+01:00 to Linux with tags: linux filesystem fuse python

• EOFS Open Filesystem Workshop 2025

  Summary of interesting topic about opensource destributed filesystems in 2025

  submitted 2025-02-27T10:00:15+01:00 to Misc with tags: hpc linux filesystem conference

• Nixos Cheatsheet

  Because I can't remember

  submitted 2025-01-01T14:34:01+01:00 to Linux with tags: nixos nix linux config

• Creating bootable images for physical machines

  How to prepare a fully bootable Linux image instead of using an OS installer

  submitted 2024-10-10T00:04:37+02:00 to Linux with tags: linux mkosi storage

• Vintage Telephone Home Network

  Using old rotary dial phones for internal communication at home

  submitted 2024-05-04T13:46:23+02:00 to Hardware with tags: phone rotary voip sip

• My first eBPF tool: bioslow

  A python tool I wrote which uses eBPF to log slow I/O operations

  submitted 2024-04-18T15:30:29+02:00 to Linux with tags: linux eBPF storage

• TCP connection routing with IPtables

  Howto use IPtables to redirect upcoming connection to another application

  submitted 2024-02-12T23:59:59+02:00 to Linux with tags: iptables network linux

• Loadbalancing TCP connections in the Linux kernel

  About the network socket option SO_REUSEPORT

  submitted 2023-12-20T16:36:34+01:00 to Linux with tags: linux

• Linux Block I/O debugging

  An overview how to trace down disk I/O bottlenecks in Linux

  submitted 2023-10-14T21:16:18+02:00 to Linux with tags: linux storage

• LAD23

  Lustre Administration & Development workshop 2023

  submitted 2023-10-04T15:59:49+02:00 to Misc with tags: linux lustre filesystem conference bordeaux opensource

• Routing a specific port though wireguard VPN

  Using policy based routing in Linux to choose network routes by destination port

  submitted 2023-09-18T14:51:16+02:00 to Linux with tags: linux network routing firewall

• Remove passwords from Git repository

  Short overview of how to remove sensitive data from git histories with bfg

  submitted 2023-04-19T19:18:47+02:00 to Linux with tags: git linux password

• Toronto ||

  submitted 2022-12-30T10:54:05+01:00 to Furnishing with tags: ccc toronto bluetooth wood speaker furniture

• Mikrotik router as Wireguard VPN gateway

  How to configure a IPv4/IPv6 VPN gateway with Mikrotik CLI

  submitted 2022-11-11T02:09:04+02:00 to Misc with tags: mikrotik wireguard routing ipv6 nat njalla

• Ansible Role: Proxmox VM Setup

  A Ansible role to automatically create VMs on a running Proxmox server

  submitted 2022-09-18T16:50:34+02:00 to Linux with tags: linux proxmox vm ansible storage

• Cosmic Cable Ltd.

  About the technical background of my beloved telephone company

  submitted 2022-08-31T09:26:46+02:00 to Misc with tags: Art Fusion Telephone

• mkosi

  MaKe Operating System Image

  submitted 2022-07-08T12:41:51+02:00 to Linux with tags: linux systemd container

• Adjustable notebook stand made of wood

  A desktop stand for laptops made from wood and cork

  submitted 2022-01-29T15:18:27+01:00 to Furnishing with tags: wood office light hardware

• Sharing filesystems with virtiofs between multiple VMs

  Howto manually start virtiofs daemon and use it with QEMU VMs

  submitted 2021-11-09T16:41:18+01:00 to Linux with tags: linux proxmox virtiofs filesystems Qemu

• Ubuntu created with debootstrap not recieving updates

  Short explanation why Ubuntu systems created with debootstrap don't contain all package repos

  submitted 2021-10-26T13:44:02+02:00 to Linux with tags: linux ubuntu debootstrap debian apt updates

• Reinitialize pacmans package database

  Recover installed ArchLinux packages from logfile

  submitted 2021-09-08T14:39:31+02:00 to Linux with tags: linux pacman arch yay

• Everything standardized, nothing works!

  A voyage through SATA power management

  submitted 2021-08-31T20:24:36+01:00 to Hardware with tags: sata linux homeserver backplane sas

• Booting Ubuntu 20.04 live via http

  Howto load and boot a casper created iso file via http

  submitted 2021-07-28T23:39:21+02:00 to Linux with tags: linux pxe casper syslinux bootloader http ubuntu

• Shiet Protection

  Howto remove password "secured" write protection from .xlsx files

  submitted 2021-06-23T15:40:21+02:00 to Linux with tags: excel linux software

• Search and destroy corrupt pages in Postgres databases

  Howto recover an unfixable corrupt database by zapping out the bad pages

  submitted 2021-06-22T13:04:41+02:00 to Linux with tags: postgres linux software

• Building Arch Linux packages under Ubuntu

  A short collection of commands to setup a Arch Linux build chroot

  submitted 2020-12-28T17:22:02+01:00 to Linux with tags: Arch Linux Ubuntu bootstrap container chroot

• Lichtverschmutzer

  A frankensteinered IKEA desk lamp with an air filter with barometer as socket

  submitted 2020-12-02T11:30:08+01:00 to Furnishing with tags: lamp light barometer desktop

• Lichtverschmutzer Enterprise Edition

  A desk lamp with a 1W 12V LED and an air filter with barometer as socket

  submitted 2020-11-29T22:30:08+01:00 to Furnishing with tags: lamp light barometer desktop

• DNS Resolution on Laptops

  Howto setup generic local DNS resolution working in different networkenvironments

  submitted 2020-11-26T19:49:40+01:00 to Linux with tags: software systemd dns

• Lichtmaschine

  A desk lamp made from an old alternator and an industrial shade

  submitted 2020-11-03T20:12:56+01:00 to Furnishing with tags: light hardware

• Host and container name resolution with LLMNR

  Short howto about using LLMNR and libNSS to resolved local container names

  submitted 2020-07-02T18:53:02+02:00 to Linux with tags: systemd nspawn llmnr libnss nss dns linux

• FOSDEM 2020

  A short review over OpenSource topics I found perticularily interesting on FOSDEM 2020

  submitted 2020-02-09T23:57:18+01:00 to Misc with tags: conference opensource

• Installing Ubuntu 18.04 from Archlinux on APU Board

  Howto install an Ubuntu 18.04 from an Archlinux livesystem on an APU2c4 board.

  submitted 2019-12-26T15:04:42+01:00 to Linux with tags: software selfhosted

• Simple Mailserver Setup

  Howto setup a (relatively) simple mailserver with nextcloud integration

  submitted 2019-10-24T17:02:35+02:00 to Linux with tags: software

• Hyperconverged Garden

  submitted 2019-05-29T21:31:27+02:00 to Furnishing with tags: style plants

• Dell Latitude 2nd HDD slot

  Quick and dirty solution to add an additional 2.5" HDD to a Dell Latitude E4300

  submitted 2019-05-29T20:08:16+02:00 to Hardware with tags: hardware

• Homeserver

  Setup of my homeserver with an APU Board, Coreboot, BTRFS, Archlinux and Zeroconf

  submitted 2019-01-10T02:27:38+01:00 to Linux with tags: hardware software storage

• Netjail

  A self written bash tool to jail applications into OpenVPN only namepaaces

  submitted 2018-11-19T10:11:23Z to Linux with tags: software security linux

• HP Micro Flowerpot

  Using an HP Microserver for what its best for

  submitted 2018-09-15T20:41:13+02:00 to Furnishing with tags: style hardware plants

• Notifications under i3

  Howto use simple graphical notifications with i3 windowmanager

  submitted 2018-05-05T22:12:00+02:00 to Linux with tags: linux network

• Simple Wireless Setup

  Basic setup for managing wifi connection on linux with systemd-networkd and wpa_supplicant

  submitted 2018-04-24T21:17:57+02:00 to Linux with tags: linux systemd network

• Introducing

  First post

  submitted 2018-04-09T20:56:21+02:00