OpenShift Logging dashboards shows "No datapoints found."

Issue

• The OpenShift Logging dashboards in the "Monitoring" view show a "No datapoints found". error.

• The ElasticSearch Pod is showing the following no permissions error:

  [2022-02-07T11:11:13,001][WARN ][r.suppressed             ] [elasticsearch-cdm-cll12fnj-1] path: /_prometheus/metrics, params: {}
  org.elasticsearch.ElasticsearchException: Search request failed
  [..]
  Caused by: org.elasticsearch.ElasticsearchSecurityException: no permissions for [indices:data/read/search] and User [name=system:serviceaccount:openshift-monitoring:prometheus-k8s, roles=[prometheus], requestedTenant=null]
  

• When querying the /_prometheus/metrics endpoint for ElasticSearch, the following no permissions error is shown:

  sh-4.4$   curl -H"Authorization: Bearer $(cat /var/run/secrets/kubernetes.io/serviceaccount/token)" -s -k https://elasticsearch-metrics.openshift-logging.svc:60001/_prometheus/metrics
  {"error":{"root_cause":[{"type":"security_exception","reason":"no permissions for [indices:data/read/search] and User [name=system:serviceaccount:openshift-monitoring:prometheus-k8s, roles=[prometheus], requestedTenant=null]"}],"type":"exception","reason":"Search request failed","caused_by":{"type":"security_exception","reason":"no permissions for [indices:data/read/search] and User [name=system:serviceaccount:openshift-monitoring:prometheus-k8s, roles=[prometheus], requestedTenant=null]"}},"status":500}