Among the changes coming with the RHEL 7.2 release, there is the new systemctl edit command. Like the systemctl cat command, you specify a service unit file as argument. But, unlike the systemctl cat command, you will need to think twice…

In a previous post, I presented the various mechanisms used for customizing Systemd unit files. These mechanisms are so rich that it is not easy to get the real picture of the final unit file. You have to search in…

From my understanding, Systemd was created to make the maintenance of Linux distributions easier. With previous init systems, you had to know all packages that could interact with a given subsystem, and you had to know them for each distribution for…

Yesterday, in the CentOS mailing list, Karanbir Singh, the CentOS project lead, announced the CentOS 7.2 release. Details are available in the CentOS 7 (1511) Releases Notes. Also, the Docker container, Vagrant images, Cloud images and Atomic Host images will…

The website is mainly about RHEL 7/CentOS 7 but the distribution running the webserver was still CentOS 6: something was wrong. This week I have been busy migrating from a physical server on CentOS 6 to a much powerful virtual machine on CentOS…

Recently on Reddit, someone wrote: […]There are minor differences in command syntax when comparing CentOS and RHEL. For example, nmcli and the lvm management both functioned incorrectly I found when I was using the utilities extensively on CentOS (this is…

Today, Red Hat announces the official release of RHEL 7.2. To know more about this new version you can read a summary of the RHEL 7.2 changes or the RHEL 7.2 Release Notes. Also and at the same time, RHEL…

Yum is already a very powerful tool. But it can still be enhanced through a plugin mechanism. Besides the fastestmirror plugin that allows you to get the new packages from the quickest mirror, there are other plugins adding new features to the…