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Beginner

How often do you reboot a CUCM cluster?

Hello all,

As we all know in the IT world, everything needs to be rebooted at times and CUCM is no exception. What is a good guideline to rebooting CUCM? Does Cisco have a specific guideline? I was trying to look through the SRND's for 7.x and 8.x and did not find any recommendations for maintenance. Any reference to a document would be greatly appreciated too!

Thanks,

Justin

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Basic troubleshooting should be done first like probing the symptoms, patterns to isolate it to a certain extent. Then only you should get into restarting services or servers.

Manish

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To reboot the cluster, you reboot the pub first.  Use RTMT to verify it is completely back up.  Then you reboot any TFTP servers (but if you only have 1 pub and 2 subs, I assume this does not apply to you).  Then you reboot the subs.  With just 2 subs, I would reboot them one at a time and verify all services are back up before doing the other.  Also, check how many phones are registered at the beginning and make sure the same number a registered at the end.

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To reboot the cluster you have to check en each Pub:

 

1-NTP Status( CLI :Utils ntp status, it should be Synchronized.

2-Db replication (CLI: utils dbreplication runtimestate, it should be without issue.

3-Backup from CUCM, CUC Backup for each server is separate, UCCX,IM&P.

4-Using RTMT check how many devices are registered before reboot and compare after rebooted. 

 

Same thing , Cisco Recommended every 6 moths rebooted those Servers.

 

Thanks.

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Contributor

I recommend a quarterly reboot cycle to my customers.

Thank you,
Justin Ferello
Technical Support Specialist, ScanSource KBZ