If you plan to restrict utilizing the root user under Linux, it is most likely that you will create sudo rules to allow certain users to execute administrative utilities. There are plenty of tools you really should not be able to run as privileged users - some examples:

screen, tmux

The famous terminal multiplexers GNU …

Icinga2 is a very powerful monitoring system that can be used optionally with the new user interface Icinga Web 2. In comparison with Icinga 1.x, those tools have been developed completely from scratch - they have nothing in common with the legacy software stack.

This year, a configuration utility named Icinga Director …

2016 seems to be the year of big hardware renewals for me - after completely overhauling my virtual infrastructure, I also needed new hard drives for my NAS after nearly 4 years.

NAS, DAS, what?

For many years, I have been using D.I.Y. NAS servers for collecting my data and media library on a single host. After I was …

Recently I stumbled upon an interesting blog post about monitoring systemd units with Nagios or Icinga.

But in my opinion the post's screenshot is misleading. I looks like the linked Python scripts automatically discovers and configures systemd units within Nagios/Icinga - which is not the case. The script named …

When configuring and testing a Python Icinga plugin within an OMD site, I stumbled upon the following error recently:

1TypeError: 'frozenset' object is not callable

After some tests on other systems, I found out, that the Python library hashlib shipped with OMD seems to be faulty. Copying the system-wide …

Recently I had issues with configuring CardDAV-Sync and CalDAV-Sync along with Owncloud after a fresh Android installation. Specifying the well-known URLs just produced several error messages inside the app:

https://my-server.tld/owncloud/remote.php/caldav/principals/USER/ …