When installing cobbler (in our case 2.6.11, but it might happen with other versions) from source, because they do not offer binary packages anymore, the…
Technical details of a default CentOS 8.0.1950 minimal installation
This article is for those of you who do not want to install a whole new operating system only to discover some technical details about…
emerge – ERROR: 17.1 migration has not been performed – upgrade from 13 to 17.1
When upgrading to 17.1 profile you need to perform additional steps to get to a healthy Gentoo portage system using profile 17.1. Here what we…
cobbler – DisallowedHost: Invalid HTTP_HOST header: ”. You may need to add u” to ALLOWED_HOSTS.
Cobbler web (probably not the latest) uses Django and since version 1.5 (IIUC) if your IP is not in an allowed host directive – ALLOWED_HOSTS…
How to do a network installation of CentOS 8 (8.0.1950) – minimal server installation
Minimal net install is useful when a dedicated server is installed from a IPMI KVM or Dell iDRAC, HP iLO, IBM IMM or where the…
Failed to install sys-apps/portage – Called pkg_preinst – portage._compat_upgrade.default_locations
Recently there was a problem with one compute node servers, which Gentoo (in fact, the chroot environment had not been updated for 3 years) could…
Fix your broken or old portage in Gentoo, fix the emerge command
Using Gentoo for servers and chroots it might happen to deal with old and not regularly updated Gentoo environment, which in some cases is completely…
SSD cache device to a software raid using LVM2
Inspired by our article – SSD cache device to a hard disk drive using LVM, which uses SSD driver as a cache device to a…
genkernel – ERROR: Unable to generate splash, ‘splash_geninitramfs’ was not found!
If you tried recently to build your kernel with genkernel (4.0.0_beta17, but you will have the same problem with 3.x) you may end up with…
Save iptables rules over reboots on Ubuntu 16 and Ubuntu 18 – persistent iptables rules
Moving towards the firewalld software and especially the systemd some good old init scripts got missing! For example, one of those good scripts is the…