The munge package.
MUNGE (MUNGE Uid 'N' Gid Emporium) is an authentication service for creating and validating credentials.
Before 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 use /sbin/mungekey.
For example:
sudo -u munge %{_sbindir}/mungekey -vPlease read man 8 mungekey for more information.
In the second step you can start and enable the munge service. ```bash systemctl start munge systemctl enalbe munge