Category Archives: Linux

Everything about Linux, doesn’t matter which version.

Centos 7 to 8 Update

Posted on 27. September 2019 by Jens Kuehnel

WARNING DANGEROUS! Disclaimer: This is not supported and it can breaks you computer or delete your data. You have been warned. I take no responsibility if it breaks. Double check that your backup is working. Past My main server was … Continue reading →

Posted in Enterprise Linux, Fedora, Linux | 2 Comments

Cool new tools

Posted on 03. October 2018 by Jens Kuehnel

Just back from my vacation I learned two cool new tools on the first day. Of course both are in EPEL and Fedora. The Silver Search: ag $STRING is an alternative to grep -ir $STING . But a lot of … Continue reading →

Posted in Enterprise Linux, Fedora, Linux, Uncategorized | Tagged | 1 Comment

Moving my Server with less than a second downtime

Posted on 13. December 2017 by Jens Kuehnel

As I’ve written in my previous post, I moved to a new Hetzner Box. This is how I setup my virtual Host and how I moved my server, including all virtual machines, to the new data center with a downtime … Continue reading →

Posted in Fedora | Tagged | Comments Off on Moving my Server with less than a second downtime

lmsensors for Monitoring a Hetzner EX41 with nct6775 on Centos7

Posted on 05. October 2017 by Jens Kuehnel

Hi, I recently rented a new Hetzner Box to replace my old. I moved from EX40 to EX41 and saving even some money every month :-). Every thing went smooth, but the sensors did not work. I had to use … Continue reading →

Posted in Enterprise Linux, Fedora, Linux | Tagged | Comments Off on lmsensors for Monitoring a Hetzner EX41 with nct6775 on Centos7

FreeNAS and check_mk

Posted on 16. August 2017 by Jens Kuehnel

Hi, I’m setting up two FreeNAS Server for Backup and Archiving and I really like FreeNAS 11. Thank good I didn’t have time to update it to FreeNAS Coral. 🙂 But I’m using check_mk for monitoring and I would like … Continue reading →

Posted in Linux, Uncategorized | Tagged | Comments Off on FreeNAS and check_mk

qemu/kvm libvirt and trim with Fedora 25

Posted on 15. July 2017 by Jens Kuehnel

Hi, after more then 10 years of using VMWare Workstation (Starting with VMWare Workstation 5). I’m in the process of moving to KVM/libvirt, but I want to use qcow2 with trim support. I’m using Fedora 25 with virt-manager to create … Continue reading →

Posted in Fedora, Linux, Uncategorized | Tagged | Comments Off on qemu/kvm libvirt and trim with Fedora 25

Citrix Reciever and SELinux

Posted on 04. July 2017 by Jens Kuehnel

Hi Internet, sorry for the longtime being absent from this blog. But marriage and a child takes time and the blog was the first to go. But I will restart writing blog posts today with a project I started a … Continue reading →

Posted in Fedora, Linux | Tagged , | Comments Off on Citrix Reciever and SELinux

We need 64bit, everywhere!

Posted on 02. July 2015 by Jens Kuehnel

Just bought a new 8TB disk drive. Following my standard procedures I run a badblock -w against the disk as burn in test. Running on Fedora 20 on x86_64 I was surprised to see this: badblocks -v -v -w /dev/sdf … Continue reading →

Posted in Enterprise Linux, Fedora, Linux | Tagged | Comments Off on We need 64bit, everywhere!

my T-Shirt

Posted on 02. July 2015 by Jens Kuehnel

root is god selinux is blasphemy

Posted in Enterprise Linux, Fedora, Linux | Tagged | 2 Comments

yum vs. dnf

Posted on 26. September 2014 by Jens Kuehnel

Sorry for the long silence. I will try to post more often from now on. I playing around with dnf, which is the package manager that should replace yum in the future and had some very nice insight. [root@mysystem ~]# … Continue reading →

Posted in Fedora, Linux, Uncategorized | Tagged | 3 Comments