When migrating an agent from a Management Server to another, sometimes the Collector could not because the agent try to reach the old MS.
Context: Moving an agent from MS_1 to MS _2
Check if the ms parameter in the [MS_SERVERS_DEF] section is correctly setted in the configuration file:
[MS_SERVERS_DEF]
ms=host:MS_2,port:9901
The messages below are present in the Collector's logs:
Thu Oct 5 09:39:57 2017: Evt - Send stop message to 'Management Server (alerts v1)' 'MS_1' (192.168.18.02:9901)
Thu Oct 5 09:40:02 2017: Evt - *** Client not responding: 'Management Server (alerts v1)' Pid=3036 'MS_1' (192.168.18.02:9901)
The error's message refers to the old Management Server (MS_1). This information is cached in a .clt file
In order to solve this issue, please follow this procedure:
1. Stop the Collector & the File Server
2. Rename the file /opt/sysload/coll/conf/xxxx.clt en /opt/sysload/coll/conf/xxxx.old
3. Restart the File Server and the Collector