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Hi Team,
Last week we have migrated our Management servers and database servers to new datacenter and after migration we saw something very strange with respect to Linux server monitoring where some of the servers went offline.
We did some troubleshooting and found that there is no issue with firewall or port as we could reinstall the agent on those linux servers.
Now the main issue is that, the servers which are offline, we tried reinstalling the agent and it gets successful and server turns healthy but after few minutes it gets offline after generating a heartbeat failure alert.
We have checked the event viewer and saw some events related to profile.
After this event, we have distributed the account again to all those affected servers by creating the group but it didn't make any difference but the event went away from the event viewer but the servers are still offline.
I need urgent help on this.
Thanks to all of you in advance.
Hi @Anchal gupta ,
can you please check again how your profiles are configured and if all the Linux related profiles are mapped to the proper account and also targeted correctly. I have seen this error multiple times and it is always related to account targeting and distribution. So please ensure that:
Regards,
Stoyan
Hi StoyanChalakov,
We haven't change anything post migration and also just for the confirmation we have redistributed the account to the offline servers but still they are offline. Ans also what is more surprising here is that the some of the Linux servers are working absolutely fine.
We have also checked your points but there is no change and everything seems to be fine like the Linux account and the Run as profiles which are mapped to correct accounts.
But still no luck :(
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Hi,
Since the problem happens after migration and we hasn't changed any operations manager settings, it may relates to network.
Besided the SSH port (default value is 22), for linux agent, tcp port 1270 is also required.
From Linux side, we can check if port 1270 is listening by omiserver and the firewall is open, see below example.
If port 1270 is listening, from management server side, we can use test-netconnection to see if we can connect to it. If not, ask network team for help. See below example.
Hope the above information helps.
Alex Zhu
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