EC2 instance unexpectedly reboots

Question

Hi,
Our ec2 instance (i-03fca6c58b97bc1bf) unexpectedly rebooted itself at 6:10, and 6:50 and we cannot figure out what is the root cause.

> user]# last reboot
> reboot   system boot  4.14.146-93.123. Tue Apr 11 06:50 - 08:25  (01:34)
> reboot   system boot  4.14.146-93.123. Tue Apr 11 06:10 - 08:25  (02:14)

We checked on /var/log/messages started with

> Apr 11 06:10:27 kernel: imklog 5.8.10, log source = /proc/kmsg started

Could someone from Amazon please check this?

Answer

Hi - Thanks for checking. I would recommend to review our knowledge article posted here and see if it helps.

Reference : https://repost.aws/knowledge-center/ec2-instance-automatic-reboot-cause

Answer

Hello, 
Thank you for your reply.
At that time the status check of the instance was failed, and fine after the reboot. Can we see the history of status check?
We already checked the cloudtrail but no event history for RebootInstances.

EC2 instance unexpectedly reboots

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