Problem with Admin Console not responding

I had an issue with the adminConsole hanging.
It stopped responding properly, I could not drill in past "Clusters" to get detail on "servers".
This happened when a box or an individual "Linux Server" that has multiple WL server nodes running on it, that are part of two clusters in the same domain.
The WL environment is WL 10.3. We can find no root cause for the box simply crashing. It physically had to be power cycled, and when it came back it came up clean with no issues and has been running fine for a few days with no more issues.
To paint a picture:
AdminServer for funkyDoomDomain runs on Linux box called adminBoxOne
In the funkyDoomDomain there are 4 clusters (chickenCLuster, duckCluster, pigCluster, horseCluster) in each cluster there are 3 nodes
each node targets a separate box, nodeBoxOne, nodeBoxTwo, and nodeBoxThree.
So what happened was nodeBoxOne went down, we have monitoring scripts that tell us if there is anything wrong with the box and all it's parts, even the health of the WL nodes, we received zero alerts so we have no root cause, but that is not the point of this post.
The point, the question is, does anyone have an idea as to why the AdminServer for the funyDoomDomain would stop responding properly.
A note here is that we have a bunch of t3 python scripts to work with applications and clusters(nodes), these scripts got the same behavior. I could not check the health status of nodes still running on the other two boxes in the domain.

mmm, it could be CPU, it could be a network-related issue... are you using multicast or unicast?
can you reproduce the issue?
if yes, can you run "top" to verify the CPU usage,
and do a thread dump on the admin server?
or at that point the box is entirely unresponsive?
in that case, running a scripts which periodically does a thread dump, and running top to sample every 10 seconds, could help...
jm2c

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