# istio_grafana-rate-interval.yaml
apiVersion: release-notes/v2

# This YAML file describes the format for specifying a release notes entry for Istio.
# This should be filled in for all user facing changes.

# kind describes the type of change that this represents.
# Valid Values are:
# - bug-fix -- Used to specify that this change represents a bug fix.
# - security-fix -- Used to specify that this change represents a vulnerability fix.
# - feature -- Used to specify a new feature that has been added.
# - test -- Used to describe additional testing added. This file is optional for
#   tests, but included for completeness.
kind: bug-fix

# area describes the area that this change affects.
# Valid values are:
# - traffic-management
# - security
# - telemetry
# - installation
# - istioctl
# - documentation
area: telemetry

# issue is a list of GitHub issues resolved in this note.
# If issue is not in the current repo, specify its full URL instead.
issue: []

# releaseNotes is a markdown listing of any user facing changes. This will appear in the
# release notes.
releaseNotes:
- |
  **Fixed** an issue where many panels in the Grafana dashboards showed **No data** if Prometheus had a scrape
  interval configured to be larger than `15s`.

# upgradeNotes is a markdown listing of any changes that will affect the upgrade
# process. This will appear in the release notes.
upgradeNotes:
  - title: Grafana dashboard changes
    content: |
      The changes require version 7.2 or later of Grafana.

# docs is a list of related docs to the change.
docs:
- '[Background information] https://grafana.com/blog/2020/09/28/new-in-grafana-7.2-__rate_interval-for-prometheus-rate-queries-that-just-work/'
- '[Usage] https://istio.io/latest/docs/tasks/observability/metrics/using-istio-dashboard/'