Page locked

This page is currently locked for editing by another user. You have to wait until this user finishes editing or the lock expires.

Currently locked by: 3.141.45.253
Lock expires at: 2024/05/20 13:02 (1 min)

This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong.

====== Rejoining an active node to the UCS cluster ======

The replication of a replica/slave happens initially during the joining
https://docs.software-univention.de/manual/5.0/de/domain-ldap/domain-join.html#how-ucs-systems-join-domains

Afterwards all further changes are sent using the Notifier/Listener mechanism. A previously installed system can rejoin the cluster. During a rejoin all installed components would be reinstalled using the "Join Scripts".

Therefore it would, generally, be a good idea to ensure that the system to rejoin the cluster can no longer accept any client connections. Due to the fact that certain services could restart during the process it is best to block all connections until the rejoin is completed.

Rejoining a node takes quite a few hours. How long depends on how large the LDAP instance is. That being said, it is usually best in situations such as this to make use of "screen" to ensure that a lose of connection is not an issue. You will also want to keep an eye on the join log (tail -f /var/log/univention/join.log) as well as the current processes using either top or pstree (watch "pstree | tail -20").






Nachdem die Arbeiten abgeschlossen sind, wäre meine Empfehlung, diese 
Änderung wieder rückgängig zu machen. Ansonsten könnte es bei einem 
Update der UCS OX AppSuite (oxse4ucs) dazu führen, dass eine evtl. dort 
gelieferte neue Version des Joinskripts nicht wie dann gewollt 
ausgeführt wird und dann andere Dinge nicht funktionieren.

Chucks notes and stuff

User Tools

Site Tools

Page locked

Page Tools