Connect to an Elasticsearch cluster
editConnect to an Elasticsearch cluster
editYou can connect an Elasticsearch cluster that is either managed by ECK or not managed by ECK.
Elasticsearch is managed by ECK
editIt is quite straightforward to connect a Kibana instance to an Elasticsearch cluster managed by ECK:
apiVersion: kibana.k8s.elastic.co/v1 kind: Kibana metadata: name: quickstart spec: version: 8.16.0 count: 1 elasticsearchRef: name: quickstart namespace: default
The use of namespace
is optional if the Elasticsearch cluster is running in the same namespace as Kibana. An additional serviceName
attribute can be specified to target a custom Kubernetes service. Refer to Traffic Splitting for more information. The Kibana configuration file is automatically setup by ECK to establish a secure connection to Elasticsearch.
Any Kibana can reference (and thus access) any Elasticsearch instance as long as they are both in namespaces that are watched by the same ECK instance. ECK will copy the required Secret from Elasticsearch to Kibana namespace. Kibana cannot automatically connect to Elasticsearch (through elasticsearchRef
) in a namespace managed by a different ECK instance. For more information, check Restrict cross-namespace resource associations.
Elasticsearch is not managed by ECK
editYou can also configure Kibana to connect to an Elasticsearch cluster that is managed by a different installation of ECK, or runs outside the Kubernetes cluster. In this case, you need the IP address or URL of the Elasticsearch cluster and a valid username and password pair to access the cluster.
Using a Secret
editRefer to Connect to external Elastic resources to automatically configure Kibana using connection settings from a Secret
.
Using secure settings
editFor example, use the secure settings mechanism to securely store the default elastic
user’s $PASSWORD
credential of the external Elasticsearch cluster as set under Deploy an Elasticsearch cluster:
kubectl create secret generic kibana-elasticsearch-credentials --from-literal=elasticsearch.password=$PASSWORD
apiVersion: kibana.k8s.elastic.co/v1 kind: Kibana metadata: name: kibana-sample spec: version: 8.16.0 count: 1 config: elasticsearch.hosts: - https://elasticsearch.example.com:9200 elasticsearch.username: elastic secureSettings: - secretName: kibana-elasticsearch-credentials
If the external Elasticsearch cluster is using a self-signed certificate, create a Secret
containing the CA certificate and mount it to the Kibana container as follows:
apiVersion: kibana.k8s.elastic.co/v1 kind: Kibana metadata: name: kibana-sample spec: version: 8.16.0 count: 1 config: elasticsearch.hosts: - https://elasticsearch-sample-es-http:9200 elasticsearch.username: elastic elasticsearch.ssl.certificateAuthorities: /etc/certs/ca.crt secureSettings: - secretName: kibana-elasticsearch-credentials podTemplate: spec: volumes: - name: elasticsearch-certs secret: secretName: elasticsearch-certs-secret containers: - name: kibana volumeMounts: - name: elasticsearch-certs mountPath: /etc/certs readOnly: true