If you have ever happened to execute some complex scripts using the cron system you were inevitable to discover the Linux environment was different than…
Linux
Linux rules the world, right?
lvm2: remove unknown physical volume device in a logical volume with a caching using vgreduce
Following the article SSD cache device to a hard disk drive using LVM the initial setup is: Single slow 2T harddisk. So no redundancy. If…
Inactive array – mdadm: Cannot get array info for /dev/md126
Replacing a disk maybe sometimes challenging, especially with software RAID. If the software RAID1 went inactive this article might be for you! Booting from a…
Mirror a PPA repositories using aptly – PHP (ppa:ondrej/php)
This is a simple example of how to mirror a PPA repository to a local server. The Ubuntu PPA to mirror is ppa:ondrej/php, which offers…
Overwrite Return-Path with postfix because of “550-Sender verification is required but failed”
Sending emails from web applications like PHP may result in rejecting the emails from some servers. Fighting spam emails results in too strict filters and…
Supermicro H11DSU-iN and dual AMD EPYC 7282 with Linux installed – system (GCC flags),kernel and device information
Here is what you can expect if you have new Linux kernel 5.5.11 installed on with AMD EPYC 7282. 8x SATA Controllers – SATA controller:…
nginx proxy cache and expires directive – pass-through the origin cache control
Proxying static content sometimes requires to modify the expire directive on the proxy server, but sometimes it may just need to pass the origin expire…
Dracut boot failed with missing device – exit and continue normal booting!
This issue deserves a much more article, in fact, a straightforward tip: You may be able to continue a normal boot only by typing “exit”…
docker-compose using private registry (repository) with shell executor in gilab-runner
Using docker-compose may make your life easier only if you use docker images from the official docker registry. And may live forever without knowing the…
Dual 10Gbit network using PCI 2.0 (5GT/s) x4 – what is the maximum bandwidth?
Ever wondered what is the maximum bandwidth of a Dual 10Gbit LAN card, which can be reached using a dual 10Gbit ports card in a…