Can I have old PCP metrics getting removed from graphs in Grafana automatically?

Solution Unverified - Updated -

Issue

  • We are running the normal chain with pmlogger logging metrics into PCP archive files, then pmproxy fetching the data into redis, and grafana visualizing the metrics. Our archive files span a retention period of 14 days. How can we make grafana only display the past 7 days of metrics for each host?
  • Why is Grafana (with PCP/pmproxy/redis behind it) just showing a small part of the days which are covered by the pmlogger archive logs?

Environment

  • Red Hat Enterprise Linux (RHEL) 8 and later
  • Performance Co-Pilot (PCP)
  • redis
  • grafana

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