Infrastructure

Application Health Check

AWS Elastic Beanstalk environments have a health check. The health check tests if our instances are up and running. In order to do this, the URL /_health is checked for existence (like https://app.wire.com/_health/). It's important to provide this page. Otherwise we get the following error from AWS Elastic Beanstalk:

503 (Service Unavailable: Back-end server is at capacity)

The Health Check can be configured for each environment here:

• https://eu-central-1.console.aws.amazon.com/elasticbeanstalk/home?region=eu-central-1#/environment/configuration?applicationName=Webapp&environmentId=ENVIRONMENT_ID&edit=health