chore(alerts): adjust PrometheusPossibleNarrowSelectors description and add link to to-be-added runbook

Author: machine424

assets/cluster-monitoring-operator/prometheus-rule.yaml

@@ -33,9 +33,10 @@ spec:
     - alert: PrometheusPossibleNarrowSelectors
       annotations:
         description: Queries or/and relabel configs on Prometheus/Thanos {{$labels.namespace}}/{{$labels.pod}} could be too restrictive.
+        runbook_url: https://github.com/openshift/runbooks/blob/master/alerts/cluster-monitoring-operator/PrometheusPossibleNarrowSelectors.md
         summary: |
           Some queries or/and relabel configs with selectors on the values of the "le" label of classic histograms or/and the "quantile" label of summaries
-          may not take into account that values could also be floats, they may need to be adjusted. If assistance is needed, please let us know at https://issues.redhat.com/browse/MON-4129.
+          may not take into account that values could also be floats, they may need to be adjusted.
       expr: increase(prometheus_narrow_selectors_count{job=~"prometheus-k8s|prometheus-user-workload|thanos-querier|thanos-ruler"}[5m]) > 0
       for: 15m
       labels:

jsonnet/rules.libsonnet

@@ -35,7 +35,7 @@ function(params) {
             description: 'Queries or/and relabel configs on Prometheus/Thanos {{$labels.namespace}}/{{$labels.pod}} could be too restrictive.',
             summary: |||
               Some queries or/and relabel configs with selectors on the values of the "le" label of classic histograms or/and the "quantile" label of summaries
-              may not take into account that values could also be floats, they may need to be adjusted. If assistance is needed, please let us know at https://issues.redhat.com/browse/MON-4129.
+              may not take into account that values could also be floats, they may need to be adjusted.
             |||,
           },
           labels: {

jsonnet/utils/sanitize-rules.libsonnet

@@ -495,6 +495,7 @@ local includeRunbooks = {
   NodeClockNotSynchronising: openShiftRunbookCMO('NodeClockNotSynchronising.md'),
   PrometheusOperatorRejectedResources: openShiftRunbookCMO('PrometheusOperatorRejectedResources.md'),
   PrometheusDuplicateTimestamps: openShiftRunbookCMO('PrometheusDuplicateTimestamps.md'),
+  PrometheusPossibleNarrowSelectors: openShiftRunbookCMO('PrometheusPossibleNarrowSelectors.md'),
   PrometheusRuleFailures: openShiftRunbookCMO('PrometheusRuleFailures.md'),
   PrometheusRemoteStorageFailures: openShiftRunbookCMO('PrometheusRemoteStorageFailures.md'),
   PrometheusScrapeBodySizeLimitHit: openShiftRunbookCMO('PrometheusScrapeBodySizeLimitHit.md'),