---
apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  labels:
    app.kubernetes.io/component: metrics
    app.kubernetes.io/instance: cluster
    app.kubernetes.io/name: prometheus
    app.kubernetes.io/part-of: monitoring
  name: prometheus-rules
spec:
  groups:
    - name: prometheus
      rules:
        - alert: PrometheusBadConfig
          annotations:
            description: Prometheus {{ $labels.namespace}}/{{ $labels.pod}} has failed to reload its configuration.
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheusbadconfig
            summary: Failed Prometheus configuration reload.
          expr: |
            # Without max_over_time, failed scrapes could create false negatives, see
            # https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details.
            max_over_time(prometheus_config_last_reload_successful{job="prometheus",namespace="monitoring"}[5m]) == 0
          for: 10m
          labels:
            severity: critical
        - alert: PrometheusNotificationQueueRunningFull
          annotations:
            description: Alert notification queue of Prometheus {{ $labels.namespace}}/{{ $labels.pod}} is running full.
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheusnotificationqueuerunningfull
            summary: Prometheus alert notification queue predicted to run full in less than 30m.
          expr: |
            # Without min_over_time, failed scrapes could create false negatives, see
            # https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details.
            (
              predict_linear(prometheus_notifications_queue_length{job="prometheus",namespace="monitoring"}[5m], 60 * 30)
            >
              min_over_time(prometheus_notifications_queue_capacity{job="prometheus",namespace="monitoring"}[5m])
            )
          for: 15m
          labels:
            severity: warning
        - alert: PrometheusErrorSendingAlertsToSomeAlertmanagers
          annotations:
            description: '{{  printf "%.1f" $value }}% errors while sending alerts from Prometheus {{ $labels.namespace}}/{{ $labels.pod}} to Alertmanager {{ $labels.alertmanager}}.'
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheuserrorsendingalertstosomealertmanagers
            summary: Prometheus has encountered more than 1% errors sending alerts to a specific Alertmanager.
          expr: |
            (
              rate(prometheus_notifications_errors_total{job="prometheus",namespace="monitoring"}[5m])
            /
              rate(prometheus_notifications_sent_total{job="prometheus",namespace="monitoring"}[5m])
            )
            * 100
            > 1
          for: 15m
          labels:
            severity: warning
        - alert: PrometheusNotConnectedToAlertmanagers
          annotations:
            description: Prometheus {{ $labels.namespace}}/{{ $labels.pod}} is not connected to any Alertmanagers.
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheusnotconnectedtoalertmanagers
            summary: Prometheus is not connected to any Alertmanagers.
          expr: |
            # Without max_over_time, failed scrapes could create false negatives, see
            # https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details.
            max_over_time(prometheus_notifications_alertmanagers_discovered{job="prometheus",namespace="monitoring"}[5m]) < 1
          for: 10m
          labels:
            severity: warning
        - alert: PrometheusTSDBReloadsFailing
          annotations:
            description: Prometheus {{ $labels.namespace}}/{{ $labels.pod}} has detected {{ $value | humanize}} reload failures over the last 3h.
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheustsdbreloadsfailing
            summary: Prometheus has issues reloading blocks from disk.
          expr: |
            increase(prometheus_tsdb_reloads_failures_total{job="prometheus",namespace="monitoring"}[3h]) > 0
          for: 4h
          labels:
            severity: warning
        - alert: PrometheusTSDBCompactionsFailing
          annotations:
            description: Prometheus {{ $labels.namespace}}/{{ $labels.pod}} has detected {{ $value | humanize}} compaction failures over the last 3h.
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheustsdbcompactionsfailing
            summary: Prometheus has issues compacting blocks.
          expr: |
            increase(prometheus_tsdb_compactions_failed_total{job="prometheus",namespace="monitoring"}[3h]) > 0
          for: 4h
          labels:
            severity: warning
        - alert: PrometheusNotIngestingSamples
          annotations:
            description: Prometheus {{ $labels.namespace}}/{{ $labels.pod}} is not ingesting samples.
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheusnotingestingsamples
            summary: Prometheus is not ingesting samples.
          expr: |
            (
              rate(prometheus_tsdb_head_samples_appended_total{job="prometheus",namespace="monitoring"}[5m]) <= 0
            and
              (
                sum without(scrape_job) (prometheus_target_metadata_cache_entries{job="prometheus",namespace="monitoring"}) > 0
              or
                sum without(rule_group) (prometheus_rule_group_rules{job="prometheus",namespace="monitoring"}) > 0
              )
            )
          for: 10m
          labels:
            severity: warning
        - alert: PrometheusDuplicateTimestamps
          annotations:
            description: Prometheus {{ $labels.namespace}}/{{ $labels.pod}} is dropping {{  printf "%.4g" $value  }} samples/s with different values but duplicated timestamp.
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheusduplicatetimestamps
            summary: Prometheus is dropping samples with duplicate timestamps.
          expr: |
            rate(prometheus_target_scrapes_sample_duplicate_timestamp_total{job="prometheus",namespace="monitoring"}[5m]) > 0
          for: 10m
          labels:
            severity: warning
        - alert: PrometheusOutOfOrderTimestamps
          annotations:
            description: Prometheus {{ $labels.namespace}}/{{ $labels.pod}} is dropping {{  printf "%.4g" $value  }} samples/s with timestamps arriving out of order.
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheusoutofordertimestamps
            summary: Prometheus drops samples with out-of-order timestamps.
          expr: |
            rate(prometheus_target_scrapes_sample_out_of_order_total{job="prometheus",namespace="monitoring"}[5m]) > 0
          for: 10m
          labels:
            severity: warning
        - alert: PrometheusRemoteStorageFailures
          annotations:
            description: Prometheus {{ $labels.namespace}}/{{ $labels.pod}} failed to send {{  printf "%.1f" $value }}% of the samples to {{  $labels.remote_name}}:{{  $labels.url }}
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheusremotestoragefailures
            summary: Prometheus fails to send samples to remote storage.
          expr: |
            (
              (rate(prometheus_remote_storage_failed_samples_total{job="prometheus",namespace="monitoring"}[5m]) or rate(prometheus_remote_storage_samples_failed_total{job="prometheus",namespace="monitoring"}[5m]))
            /
              (
                (rate(prometheus_remote_storage_failed_samples_total{job="prometheus",namespace="monitoring"}[5m]) or rate(prometheus_remote_storage_samples_failed_total{job="prometheus",namespace="monitoring"}[5m]))
              +
                (rate(prometheus_remote_storage_succeeded_samples_total{job="prometheus",namespace="monitoring"}[5m]) or rate(prometheus_remote_storage_samples_total{job="prometheus",namespace="monitoring"}[5m]))
              )
            )
            * 100
            > 1
          for: 15m
          labels:
            severity: critical
        - alert: PrometheusRemoteWriteBehind
          annotations:
            description: Prometheus {{ $labels.namespace}}/{{ $labels.pod}} remote write is {{  printf "%.1f" $value }}s behind for {{  $labels.remote_name}}:{{  $labels.url }}.
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheusremotewritebehind
            summary: Prometheus remote write is behind.
          expr: |
            # Without max_over_time, failed scrapes could create false negatives, see
            # https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details.
            (
              max_over_time(prometheus_remote_storage_highest_timestamp_in_seconds{job="prometheus",namespace="monitoring"}[5m])
            - ignoring(remote_name, url) group_right
              max_over_time(prometheus_remote_storage_queue_highest_sent_timestamp_seconds{job="prometheus",namespace="monitoring"}[5m])
            )
            > 120
          for: 15m
          labels:
            severity: critical
        - alert: PrometheusRemoteWriteDesiredShards
          annotations:
            description: Prometheus {{ $labels.namespace}}/{{ $labels.pod}} remote write desired shards calculation wants to run {{  $value }} shards for queue {{  $labels.remote_name}}:{{  $labels.url }}, which is more than the max of {{  printf `prometheus_remote_storage_shards_max{instance="%s",job="prometheus",namespace="monitoring"}` $labels.instance | query | first | value }}.
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheusremotewritedesiredshards
            summary: Prometheus remote write desired shards calculation wants to run more than configured max shards.
          expr: |
            # Without max_over_time, failed scrapes could create false negatives, see
            # https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details.
            (
              max_over_time(prometheus_remote_storage_shards_desired{job="prometheus",namespace="monitoring"}[5m])
            >
              max_over_time(prometheus_remote_storage_shards_max{job="prometheus",namespace="monitoring"}[5m])
            )
          for: 15m
          labels:
            severity: warning
        - alert: PrometheusRuleFailures
          annotations:
            description: Prometheus {{ $labels.namespace}}/{{ $labels.pod}} has failed to evaluate {{  printf "%.0f" $value }} rules in the last 5m.
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheusrulefailures
            summary: Prometheus is failing rule evaluations.
          expr: |
            increase(prometheus_rule_evaluation_failures_total{job="prometheus",namespace="monitoring"}[5m]) > 0
          for: 15m
          labels:
            severity: critical
        - alert: PrometheusMissingRuleEvaluations
          annotations:
            description: Prometheus {{ $labels.namespace}}/{{ $labels.pod}} has missed {{  printf "%.0f" $value }} rule group evaluations in the last 5m.
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheusmissingruleevaluations
            summary: Prometheus is missing rule evaluations due to slow rule group evaluation.
          expr: |
            increase(prometheus_rule_group_iterations_missed_total{job="prometheus",namespace="monitoring"}[5m]) > 0
          for: 15m
          labels:
            severity: warning
        - alert: PrometheusTargetLimitHit
          annotations:
            description: Prometheus {{ $labels.namespace}}/{{ $labels.pod}} has dropped {{  printf "%.0f" $value }} targets because the number of targets exceeded the configured target_limit.
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheustargetlimithit
            summary: Prometheus has dropped targets because some scrape configs have exceeded the targets limit.
          expr: |
            increase(prometheus_target_scrape_pool_exceeded_target_limit_total{job="prometheus",namespace="monitoring"}[5m]) > 0
          for: 15m
          labels:
            severity: warning
        - alert: PrometheusLabelLimitHit
          annotations:
            description: Prometheus {{ $labels.namespace}}/{{ $labels.pod}} has dropped {{  printf "%.0f" $value }} targets because some samples exceeded the configured label_limit, label_name_length_limit or label_value_length_limit.
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheuslabellimithit
            summary: Prometheus has dropped targets because some scrape configs have exceeded the labels limit.
          expr: |
            increase(prometheus_target_scrape_pool_exceeded_label_limits_total{job="prometheus",namespace="monitoring"}[5m]) > 0
          for: 15m
          labels:
            severity: warning
        - alert: PrometheusScrapeBodySizeLimitHit
          annotations:
            description: Prometheus {{ $labels.namespace}}/{{ $labels.pod}} has failed {{  printf "%.0f" $value }} scrapes in the last 5m because some targets exceeded the configured body_size_limit.
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheusscrapebodysizelimithit
            summary: Prometheus has dropped some targets that exceeded body size limit.
          expr: |
            increase(prometheus_target_scrapes_exceeded_body_size_limit_total{job="prometheus",namespace="monitoring"}[5m]) > 0
          for: 15m
          labels:
            severity: warning
        - alert: PrometheusScrapeSampleLimitHit
          annotations:
            description: Prometheus {{ $labels.namespace}}/{{ $labels.pod}} has failed {{  printf "%.0f" $value }} scrapes in the last 5m because some targets exceeded the configured sample_limit.
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheusscrapesamplelimithit
            summary: Prometheus has failed scrapes that have exceeded the configured sample limit.
          expr: |
            increase(prometheus_target_scrapes_exceeded_sample_limit_total{job="prometheus",namespace="monitoring"}[5m]) > 0
          for: 15m
          labels:
            severity: warning
        - alert: PrometheusTargetSyncFailure
          annotations:
            description: '{{  printf "%.0f" $value }} targets in Prometheus {{ $labels.namespace}}/{{ $labels.pod}} have failed to sync because invalid configuration was supplied.'
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheustargetsyncfailure
            summary: Prometheus has failed to sync targets.
          expr: |
            increase(prometheus_target_sync_failed_total{job="prometheus",namespace="monitoring"}[30m]) > 0
          for: 5m
          labels:
            severity: critical
        - alert: PrometheusHighQueryLoad
          annotations:
            description: Prometheus {{ $labels.namespace}}/{{ $labels.pod}} query API has less than 20% available capacity in its query engine for the last 15 minutes.
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheushighqueryload
            summary: Prometheus is reaching its maximum capacity serving concurrent requests.
          expr: |
            avg_over_time(prometheus_engine_queries{job="prometheus",namespace="monitoring"}[5m]) / max_over_time(prometheus_engine_queries_concurrent_max{job="prometheus",namespace="monitoring"}[5m]) > 0.8
          for: 15m
          labels:
            severity: warning
        - alert: PrometheusErrorSendingAlertsToAnyAlertmanager
          annotations:
            description: '{{  printf "%.1f" $value }}% minimum errors while sending alerts from Prometheus {{ $labels.namespace}}/{{ $labels.pod}} to any Alertmanager.'
            runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheuserrorsendingalertstoanyalertmanager
            summary: Prometheus encounters more than 3% errors sending alerts to any Alertmanager.
          expr: |
            min without (alertmanager) (
              rate(prometheus_notifications_errors_total{job="prometheus",namespace="monitoring",alertmanager!~``}[5m])
            /
              rate(prometheus_notifications_sent_total{job="prometheus",namespace="monitoring",alertmanager!~``}[5m])
            )
            * 100
            > 3
          for: 15m
          labels:
            severity: critical
