topic Re: Proactive Server Reboots in IP Telephony and Phones

Proactive Server Reboots

Evai — Thu, 15 Jul 2021 19:05:25 GMT

I am looking for information on if there are any recommendations for scheduling reboots of the CUCM. Most posts on here pertaining to this question are rather old.

Our company is looking to schedule proactive reboots due to an outage where the resolution was to reboot the publisher/subscriber.

Management is suggesting once a month which appears to be overkill.

Older posts (2011-2015) recommend every 6 months to a year to only rebooting if there is an issue.

Does cisco have any current standpoint on the matter?

We are on 12.5.

Re: Proactive Server Reboots

Adam Pawlowski — Thu, 15 Jul 2021 20:13:17 GMT

Speaking as myself, we've heard anecdote about rebooting systems at least annually, however we've never run into a functional requirement to do so. Nothing crashed, ran out of memory, etc that required a full restart, just because it was running.

Systems patching and maintenance usually requires an appliance restart at least bi-annually, if you have that sort of patch cadence.

There have been many cases of bugs that have required us to restart various services, sometimes frequently (daily) until the the issue can be cleared or resolved by some means. Some of those can result in outage conditions, filling up a disk partition, etc, which I suppose you could resolve by restarting the whole appliance. Strange disruptions to database replication in the distant past seemed to be best resolved this way.

I guess I would wonder what the root cause of your trouble was, and address it appropriately, but I'm not aware of any official guidance myself that states you should be rebooting things. I'm not Cisco however, so perhaps they have some other answer.

Re: Proactive Server Reboots

Nithin Eluvathingal — Fri, 16 Jul 2021 00:57:35 GMT

I have sites running version 12.5 last two years without any restart. When oped a TAC case, TAC engineer mentioned that its better to restart the server every 90 days. the same site is running last 2 years without any restart. I do have other sites on older version which runs without any restarts last 7 years.

AFAIK, no CUCM admins guides mentioned about the scheduled restart.So there is no standard details for server reboots.

Re: Proactive Server Reboots

Adam Pawlowski — Fri, 16 Jul 2021 01:06:04 GMT

+1 @Nithin Eluvathingal it really is a solid solution.