Why does Elastic Load Balancing report 'Out of Service'?

amazon-web-services load-balancing amazon-elb
jkeesh picture jkeesh · Aug 18, 2011 · Viewed 36.4k times · Source

I am trying to set up Elastic Load Balancing (ELB) in AWS to split the requests between multiple instances. I have created several images of my webserver based on the same AMI, and I am able to ssh into each individually and access the site via each distinct public DNS.

I have added each of my instances to the load balancer, but they all come back with the Status: Out of Service because they failed the health check. I'm mostly confused because I can access each instance from its public DNS, but I get a timeout whenever I visit the load balancer DNS name.

I've been trying to read through all the docs and googling it, but I'm stuck. Any pointers or links in the right direction would be greatly appreciated.

Answer

batman 74 picture batman 74 · Apr 16, 2013

I contacted AWS support about this same issue. Apparently their system doesn't know how to handle cases were all of the instances behind the ELB are stopped for an extended amount of time. AWS support can manually refresh the statuses, if you need them up immediately.

The suggested fix it to de-register the ec2 instances from the ELB instead of just stopping them and re-register them when you start again.

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