The munge package.
MUNGE (MUNGE Uid 'N' Gid Emporium) is an authentication service for creating and validating credentials.
Bevor starting the service as the first time a secret key has to been created.
For creating the key add store it to the file
/etc/munge/munge.key the following script is provided:
In the second step you can start und enable the munge service.
systemctl start munge systemctl enalbe munge