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How do I configure an external load balancer to check if the ClusterALBInstance/ALBInstance is available?

In case ClusterALBInstance/ALBInstance is deployed behind a load balancer, it is recommended that you configure your load balancer so that it would check the availability of the Instance’s endpoints via a health check mechanism, periodically sending either HTTP requests or TCP packets. While it is possible to test the endpoints simply by checking if a relevant TCP port is open, we recommend implementing HTTP checks with the following parameters:

  • Protocol: HTTP (if Proxy Protocol is enabled, configure the load balancer to use Proxy Protocol for health-check connections as well);
  • Path: /healthz;
  • Port: 80 (or relevant httpPort value in case of using HostPort inlet).