Inaccessible server - reachability tests passed

Question

Hello all,

I am using running an EC2 instance and have suddenly lost ability to connect to it. I have rebooted and restarted, and I have tried SSH, EC2 instance connect, and session manager but have had no success with reaching this server.
The default system and instance reachability tests are both passing... any ideas?

Accepted Answer

Hello.

It may not be available depending on the instance type, but have you tried connecting via serial console?  
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-serial-console-prerequisites.html

You may also want to check the EC2 system log and check for any errors using the steps in the document below.  
I think there is another way to take a snapshot and recreate EC2.  
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/troubleshoot-unreachable-instance.html#instance-console-console-output

Inaccessible server - reachability tests passed

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