topic Re: ISE Node disjoins from deployment after running Show Tech in Network Access Control

ISE Node disjoins from deployment after running Show Tech

Jithishkk1514 — Fri, 05 Mar 2021 14:05:11 GMT

Hello All,

We are running SNS-3495 appliance with Version 2.2.0.470. There is already a bug hitting our PSN node due to "HeapDumpOnOutOfMemoryError". Considering the Bug behavior, there must be a triggering point for the bug. We are suspecting while we are running show tech for that particular node as the time matches very close twice.

From the logs, the admin logged out and all the services initiated stop responding

My query,

1. Running a show tech command can trigger the memory leak issue in ISE Nodes?

Re: ISE Node disjoins from deployment after running Show Tech

Marcelo Morais — Fri, 05 Mar 2021 15:26:58 GMT

Hi @Jithishkk1514

you can try the:

ise/admin# application configure ise
Selection configuration option
...
[22]Generate Heap Dump
...

and check the result ...

During the show tech-support command you can try (in another SSH)

ise/admin# tech top

and check CPU, Memory, and other ...

Hope this helps !!!

Re: ISE Node disjoins from deployment after running Show Tech

Jithishkk1514 — Fri, 05 Mar 2021 15:58:07 GMT

@Marcelo Morais

I understood the command, My query is

Running a show tech command can trigger the memory leak issue.?

Re: ISE Node disjoins from deployment after running Show Tech

Marcelo Morais — Fri, 05 Mar 2021 19:50:18 GMT

Hi @Jithishkk1514

AFAIK the answer is no.

I had a problem with the show tech-support command described here: CSCvt44403, but not related with Memory Leak.

Hope this helps !!!