OpenShift Metrics Charts have gaps or spaces

Environment

• OpenShift Enterprise 3.x

Issue

• i can the Metrics for the Pods now but i see come cuts.
• I see gaps occurring in my metrics charts

Resolution

• The gaps showing up in the metrics chart are commonly caused by the metrics_resolution for versions 3.2.1 and beyond (or stats_resolution for older 3.x versions) being set too high.
  • To correct the problem, edit the ReplicationController to decrease that value by a few seconds:

 # oc edit rc heapster
...
        - --tls_key=/secrets/heapster.key
        - --tls_client_ca=/secrets/heapster.client-ca
        - --allowed_users=%allowed_users%
        - --stats_resolution=30s
...

• After making this change you will need to scale the heapster pod down to 0 and then back up so a new pod is deployed with the new settings:

# oc scale rc heapster --replicas=0
# oc scale rc heapster --replicas=1

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