LISTENER ( ERROR ) : timeout when receiving data

UCS - Univention Corporate Server
#1

Hi Team,

I’m struggling since weeks to get the listener working again.

Current UCS version is 4.4-8 errata992

I tried everything like:

Prune transaction log

Prune transaction log

increased maxsize

How to reset Listener / Notifier replication

At the end listener and notifier are running and listener.log show:

08.07.21 09:32:57.669 LISTENER ( ERROR ) : timeout when receiving data
08.07.21 09:32:57.671 LISTENER ( ERROR ) : couldn’t receive header
08.07.21 09:32:57.671 LISTENER ( WARN ) : can not connect any server, retrying in 30 seconds
08.07.21 09:33:27.672 LISTENER ( WARN ) : Notifier/LDAP server is xxx.de:7389
08.07.21 09:33:27.672 LDAP ( PROCESS ) : connecting to ldap://xxx.de:7389
08.07.21 09:33:27.685 LDAP ( INFO ) : simple_bind as cn=admin,dc=intra,dc=xxx,dc=de
08.07.21 09:33:27.686 LISTENER ( INFO ) : connecting to notifier xxx.de:6669
08.07.21 09:33:27.686 LISTENER ( INFO ) : established connection to xxx.134 port 6669
08.07.21 09:33:27.686 LISTENER ( ALL ) : >>>Version: 3

It will be great if anybody can provide some ideas, what I could check to come to the root cause.

Thanks a lot and Regards,
Dirk

#2

I checked again replication and got:

root@cd-ucs-01:/var/lib/univention-ldap# /usr/lib/nagios/plugins/check_univention_replication
CRITICAL: no change of listener transaction id for last 0 checks (nid=Error: timed out lid=2201668)

Any idea how to analyse why I’m getting the timeout?

Thanks Dirk

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