Signals Data Factory - How to connect to Elasticsearch cluster

First, connect to the admin node for the environment that requires to expose Elasticsearch:

kubectl get services | grep elastic

This will show all Elasticsearch services. Services are the way pods are referenced. Next, make the elasticsearch service exposed. Run edit service for the elasticsearch master service:

kubectl edit service sdf-core-infrastructure-elasticsearch-master

Change the service type from ClusterIp to NodePort - NodePort is externally exposed.

So, using vi or another editor, under specs, change type: ClusterIp to type: NodePort

Save: press escape, then :wq and enter to save and exit the editor.

The service is now publicly exposed on port 32250.

To hit elasticsearch:

GET <http://clusterName:32250/*/_search>

Example with a query:

{
    "from": 0,
    "size": 1000,
    "query": {
        "match_all": {}
    }
}

Now Elasticsearch access is ready.