These actions are unsupported since these changes are to the OS itself, not the Checkmk software.
Problem
A customer may encounter an issue where the characters in their Checkmk graphs appear incorrect and are displayed as follows:
This issue occurs due to the fonts located in the /usr/share/ directory of both openSUSE and SUSE Linux Enterprise (SLE) distributions.
Solution
To resolve this, you can execute the following commands either as a normal Linux user or as root:
sudo omd stop <SITENAME> cd /usr/share/ sudo mv fonts fonts.bak sudo zypper install -f google-opensans-fonts sudo omd start <SITENAME>
Please check the graphs again, and they should now be displayed correctly.