0

I have a single ubuntu ec2 instance running nginx behind an ELB. Occasionally the instance runs out of memory which crashes the node app behind nginx and then I get a 502 bad gateway message and have to reboot.

I can see how to get alarm messages that this has happened, and can set the ELB health check to fail if there is a 502, but is it possible to have the instance reboot automatically?

In the EC2 dashboard I see where I can tell it to reboot if the Instance Status Check fails, but I don't think this can be configured to do what I want - the ELB health check is not the same as the Instance Health Check. It seems like somehow I need to connect the two.

I am not using auto scaling.

  • 2
    Is there are specific reason you are not using autoscaling? Even if you were using an ASG of size 1 (for just one instance), you could get the benefit of autoscaling health checks, which would do what you want. – Castaglia Dec 29 '16 at 22:11
  • I just haven't learned that side of it yet and was hoping for a way to do it without it. – Ron Dec 29 '16 at 22:37
0

You could write a Lambda that listens to the SNS topic of the alarm and initiates a reboot of the affected instancee.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.