Connecting Apache Druid clusters
The operator can automatically connect Superset clusters that it manages to Apache Druid clusters managed by the Stackable operator for Apache Druid.
To do so, create a DruidConnection resource:
apiVersion: superset.stackable.tech/v1alpha1
kind: DruidConnection
metadata:
name: superset-druid-connection
spec:
superset: (1)
name: superset
namespace: default
druid: (2)
name: druid
namespace: default| 1 | The name and namespace in spec.superset refer to the Superset cluster that you want to connect. Following our example above, the name is superset. |
| 2 | In spec.druid you specify the name and namespace of your Druid cluster. Following our example above, the name is druid. |
The namespace part is optional in both cases; if it is omitted it will default to the namespace of the DruidConnection.
Once Superset startup is complete and the database is initialized, the Superset operator will create a Job that will connect to the Superset cluster to run an import command to add the Druid cluster as a datasource.
| The Job is connecting to the Superset Pods. If you are restricting network traffic in your Kubernetes cluster, make sure to configure a NetworkPolicy that allows the Job to connect to Superset. |
Once the Job is completed you can see the Druid cluster as a database in the user interface under Data > Databases:
Further reading
Read the CRD reference for the DruidConnection CustomResource.