DAG not recognised on Some Exchange servers

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Article ID: 140148

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Updated On:

Products

DX Infrastructure Management NIMSOFT PROBES

Issue/Introduction

exhange_monitor probes are not detecting a DAG on half of the DAG members. 

Environment

Release :

Component : UIM - EXCHANGE_MONITOR

Resolution

One possibility of this is if different version of Exchange Server have been installed on the server and cleanup of prior versions has either not been done or is incomplete.

The probe, on initial deployment, checks for the exchange server version and if there are issues within the environment then it is likely to drop through the checks e.g.


exchange_monitor: (main) server check...is 2007: no

exchange_monitor: (main) server check...is 2010: no

exchange_monitor: (main) server check...is 2013: no

exchange_monitor: (main) server check...is 2016: no


One place to check for issues is in the registry keys. There should be a key/folder relating to the exchange server version e.g.  

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Exchange Server\v15


If keys/folders for other versions of Exchange Server exist at the same time e.g.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Exchange Server\v14


then this can cause issues with detection. 

A cleanup should be done so that only the current Exchange version has a registry key/folder entry.

Once that is done, the existing probe configuration should be saved and probe and folder deleted.

Deploy the probe from new and check the log to determine whether it has correctly identified the Exchange server version.