For the past few weeks I’ve been trying to solve few particular set of problems which I won’t go into detail here, perhaps in another post. One of the challenges I’ve faced is how to export NFS from my ZFS pool on Fedora host machine and mount it within Ubuntu based VM. The whole process is quite simple and straight forward so here we go. In order to be able to use NFS at all we first need to install required components on the host machine:...
I had this problem with playing Netflix videos in Firefox on Fedora where even at video preview-s I would constantly get yellow bar with the message that Widevine Content Decryption Module, required for playing DRM content Netflix serves, has in fact crashed. Videos worked fine in Chrome, but I’d like to use Firefox. After some digging through, mainly by following Journal logs and triggering error in parallel I’ve came across following error...
More than 3 years ago I’ve written an article about self-hosting email. Throughout the years that setup was adjusted, migrated and changed in various ways. I’ve used it on the FreeBSD, Debian, Ubuntu since the original article which was based on CentOS. Now, I’m trying to set it up again on the CentOS, this time on the CentOS 8 and components to achieve the whole flow are changed a bit, and there are even some new ones....
ZFS is really nice filesystem and I use it wherever I can. I could write essays on the topic of ZFS and how awesome it is, and that is just what might happen some time in the future, but for now I’ll just show you how snapshots are managed on my machines. Why snapshots? There are 10 types of people: Those who do backups And those who will I’m not sure about you, but I’ve definitely deleted things I shouldn’t have only to realize few minutes (,or 3 days, or a month) later that I need the data that’s now gone....
First off, what is kexec? - It is a system call that enables you to load and boot into another kernel from currently running kernel. That effectively means; doing reboot without going through the whole POST/Firmware load process. To use kexec we can rely on systemd to handle process for us. The only work we need to do is to install kexec-tools package and adjust some configs sudo apt-get update sudo apt-get install kexec-tools Since Ubuntu usually relies on booting from grub we can tweak some settings to default to loading default grub kernel when we run kexec....