Services
editServices
editYou can access Elastic resources by using native Kubernetes services that are not reachable from the public Internet by default.
Manage Kubernetes services
editFor each resource, the operator manages a Kubernetes service named <name>-[es|kb|apm|ent|agent]-http
, which is of type ClusterIP
by default. ClusterIP
exposes the service on a cluster-internal IP and makes the service only reachable from the cluster.
> kubectl get svc NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE hulk-apm-http ClusterIP 10.19.212.105 <none> 8200/TCP 1m hulk-es-http ClusterIP 10.19.252.160 <none> 9200/TCP 1m hulk-kb-http ClusterIP 10.19.247.151 <none> 5601/TCP 1m
Allow public access
editYou can expose services in different ways by specifying an http.service.spec.type
in the spec
of the resource manifest.
On cloud providers which support external load balancers, you can set the type
field to LoadBalancer
to provision a load balancer for the Service
, and populate the column EXTERNAL-IP
after a short delay. Depending on the cloud provider, it may incur costs.
By default, the Elasticsearch service created by ECK is configured to route traffic to all Elasticsearch nodes in the cluster. Depending on your cluster configuration, you may want more control over the set of nodes that handle different types of traffic (query, ingest, and so on). Check Traffic Splitting for more information.
When you change the clusterIP
setting of the service, ECK will delete and re-create the service as clusterIP
is an immutable field. Depending on your client implementation, this might result in a short disruption until the service DNS entries refresh to point to the new endpoints.
apiVersion: <kind>.k8s.elastic.co/v1 kind: <Kind> metadata: name: hulk spec: version: 8.15.3 http: service: spec: type: LoadBalancer
> kubectl get svc NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE hulk-apm-http LoadBalancer 10.19.212.105 35.176.227.106 8200:31000/TCP 1m hulk-es-http LoadBalancer 10.19.252.160 35.198.131.115 9200:31320/TCP 1m hulk-kb-http LoadBalancer 10.19.247.151 35.242.197.228 5601:31380/TCP 1m