Dears, I am trying to setup Rabbitmq cluster on Azure Kubernetes Service.

I am using the example yaml files provided here: https://github.com/rabbitmq/rabbitmq-peer-discovery-k8s/tree/master/examples/k8s_statefulsets

I got this error and pod keep restarting:

Failed to get nodes from k8s - {failed_connect,[{to_address,{"kubernetes.default.svc.cluster.local",443}},
                 {inet,[inet],nxdomain}]}

I know the meaning of the error. but, what grinds my gears is I don't know how to assign a hostname for the cluster. or from where I got the right one!

I've searched the entire Internet, I can find any useful answer for this question. all answers from kind "you need to specify your host name" ... OK i really need to do that .. but how?

this line from the rabbitmq configurations:

cluster_formation.k8s.host = kubernetes.default.svc.cluster.local 

and it's a default value. I don't what is the right value? do I need to create something? to get specific hostname from somewhere?