EC2 instance Status Check failed and server stopped working
I am using an AWS EC2 instance (t3.xlarge) running on Ubuntu server 18.04.6 LTS, which was working fine. But suddenly I encountered an error where the instance status check failed "Instance reachability check failed" and I was not able to connect to my instance through ssh also the website attached to this server also stopped working. I don't see any storage or Ram issue during this time.
I had to force stop and start the instance from the AWS EC2 Console to fix this issue.
Later after connecting to the server, I checked the syslog where some of the services were killed as shown in below image around the same time when the instance status check failed.
I would like to know what is the route cause or trigger for this issue and the steps I can take to avoid such issues in the future.
Please comment if more information is required.
Your help in solving this issue is much appreciated.
Thanks in advance.
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Hello Surya,
Please review this article https://repost.aws/knowledge-center/ec2-linux-status-check-failure/ in troubleshooting this issue.
It's difficult to say for certain what caused the instance status check failure without the specific details about EC2 machine and its logs. I would encourage you to open a Technical case with AWS Support by choosing topic Elastic Compute Cloud (EC2 - Linux) and AWS support team should be able to deep dive into instance logs and provide your better insights.
I hope this helps, if it does it would be greatly appreciated if you can accept the answer so that community can benefit for clarity.
Thank you, Nihar
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