09-16-2014 05:54 AM - edited 03-10-2019 10:01 PM
Hi All
I have a pair of ISE appliances running 1.2.1.198 code.
I have the 2 nodes setup as primary and secondary and they were synced OK.
There was a DNS issue in the network and the ISE nodes were not able to resolve the hostname of the other node so the link between the 2 dropped.
The DNS issue was resolved but the connection stayed down and there doesn't seem to be anyway to re-initiate the connection.
My solution was to de-register the secondary node and then register it again. However, although the de-registration seemed to go OK, the secondary node never came back up in standlaone mode so I was unable to register it on the primary again.
The only solution seemed to be to re-image the appliance.
This seems a very drastic solution for a simple issue such as DNS failing.
Does anyone have any useful comments on this issue?
09-16-2014 06:08 PM
Under the deployment tab you should see a button called "Syncup." You should be able to select the node that is out of sync and re-sync it. Deregistering and registering the node again should also do the trick. What error are you getting when trying to register it?
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09-17-2014 12:55 AM
Hi Neno
The syncup button was disabled and wouldn't do anything. That's why I elected to de-register the secondary.
The de-registration went OK but when I tried to register the secondary node the message I got was that the node wasn't in 'standalone mode' and therefore couldn;t be registered.
Logging into the secondary showed no options to switch it back to standalone. I attempted to change it from secondary to primary but that wouldn't work either. The only option left was to re-image.
Having done the re-image I was able to register the second node successfully.
Regards
Roger
09-18-2014 09:45 AM
That is interesting. Unfortunately, we can't troubleshoot it anymore since you already re-imaged the node and fixed your issue :) Thank you for taking the time to provide feedback and good job on resolving your issue (+5 from me).
If your issue is resolved you should probably mark the thread as answered :)
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