Check whether a UCS server has successfully joined a UCS cluster

root@master:~# univention-check-join-status
Joined successfully 
root@master:~# 

How to retrieve all version information (major, patch & errata versions)

root@master:~# ucr search version/version version/patchlevel version/errata
version/erratalevel: 508
version/patchlevel: 2
version/version: 5.0

Thanks to Debian you can easily check the status of installed packages. If all is good it will look like that following.

root@master:~# dpkg --audit
root@master:~# 

Verify that LDAP is working correctly. Below is an example of what you would like to see.

root@master:~#  univention-ldapsearch -s base -LLL dn
dn: dc=domain,dc=test
root@master:~#

Check if there are any errors in your logs

root@master:~# grep "oom|segfault" /var/log/syslog
root@master:~#