Kibana is not connecting to ElasticSearch

A few troubleshooting tips:

1) ensure ElasticSearch is running fine.

Enter the container running elasticsearch and run:

curl localhost:9200

You should get a JSON, with some data about elasticsearch.

2) ensure ElasticSearch is reachable from the kibana container

Enter the kibana container and run:

curl <elasticsearch_service_name>:9200

You should get the same output as above.

3) Ensure your ES indices are fine.

Run the following command from the elasticsearch container:

curl localhost:9200/_cat/indices?pretty

You should get a table with all indices in your ES cluster and their status (which should be green or yellow in case you only have one ES replica).

If one of the above points fails, check the logs of your ES container for any error messages and try to solve them.

This exception indicates 2 misconfiguration1. DNS Addon of Kubernetes is not working properly. Check your dns addon logs2. Pod 2 Pod communication is not working properly. This is related with your underlying sdn addon cni flannel calico.

You can check by pinging one pod from another pod. If it is not working than check your networking configuration especially kube-proxy component.