Service exposition with listener classes
History services
The operator deploys a Listener for each spark history pod.
The default is to only being accessible from within the Kubernetes cluster, but this can be changed by setting .spec.nodes.config.listenerClass:
apiVersion: spark.stackable.tech/v1alpha1
kind: SparkHistoryServer
metadata:
name: spark-history
spec:
nodes:
config:
listenerClass: external-unstable (1)| 1 | Specify one of external-stable, external-unstable, cluster-internal (the default setting is cluster-internal). |
For the example above, the listener operator creates a service named spark-history-node-default where spark-history is the name of the SparkHistoryServer, node is the service role (the only service role available for history servers) and default is the role group.