How to fix “Kibana server is not ready yet” error when using AKS

Question

I'm setting up ELK services in Azure Kubernetes Service. But I only see this error:

"Kibana server is not ready yet"

I'm using Helm to install the stable/elastic-stack release without any changes (default for everything) in AKS.

helm install --name elk stable/elastic-stack

And I also added an ingress controller to expose the Kibana server to public. However, I only see "Kibana server is not ready yet" error.

I've checked the Kibana pod is running, as well as the ElasticSearch. As a newbie in Kubernetes, I have no idea about how to find the error log in Kibana instance. Can anyone help me on this? It is also appreciated if you can indicate what step I am missing.

Answer 1

Most probably you didn't change the value for ELASTICSEARCH_URL environment variable in Kibana deployment with your original one, as it was shipped with default values from Elastic-stack Helm chart. Therefore, you have to replace Elasticsearch URL with actual service address inside Kibana configuration.

You can do it in a two ways:

• Update the value within Helm Chart:

  helm upgrade -f new-values.yml {release name} {package name or path}

The default values.yaml for Elastic-stack Helm chart can be found here. Also might be useful to get more details in the official Helm documentation.

• Replace ELASTICSEARCH_URL environment variable in the related to Kibana deployment:

  kubectl edit deployment elk-kibana

  kubectl delete pod <elk-kibana-Pod-name>

Wait until Kubernetes successfully terminates the old and spin up a new Kibana Pod.

Answer 2

It might be the version incompatible issue. Just follow the console to get the errors. Kibana version should be always higher than Elasticsearch.In that case, it gives an error following.

[error][status][plugin:xpack_main@7.4.0] Status changed from yellow to red - This version of Kibana requires Elasticsearch v7.4.0 on all nodes. I found the following incompatible nodes in your cluster: v7.1.1 @ 127.0.0.1:9200 (127.0.0.1)