I am having the same issue. I tested the C5 instance when it first came
out and it would randomly lock up at 100% CPU. I contacted AWS support
and they could not figure it out. They sent a message to the devs to see
if they could. So I switched back to c4 instances. I decided to try it
again yesterday and it working fine until this morning when it randomly
decided to lock up at 100% CPU again. I looked at all the logs and
nothing is showing me what could be causing issues. I tried multiple
kernels and for me, they all seem to do it. Anyone figure this out? I
would really like to use the C5.
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https://bugs.launchpad.net/bugs/1746806
Title:
sssd appears to crash AWS c5 and m5 instances, cause 100% CPU
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