---
## https://awesome-prometheus-alerts.grep.to/rules#prometheus-self-monitoring
prometheus_server_rules_prometheus_extra: []
prometheus_server_rules_prometheus:
  - alert: PrometheusJobMissing
    expr: absent(up{job="prometheus"})
    for: 0m
    labels:
      severity: warning
    annotations:
      summary: Prometheus job missing (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "A Prometheus job has disappeared\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusTargetMissing
    expr: up == 0
    for: 0m
    labels:
      severity: critical
    annotations:
      summary: Prometheus target missing (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "A Prometheus target has disappeared. An exporter might be crashed.\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusAllTargetsMissing
    expr: count by (job) (up) == 0
    for: 0m
    labels:
      severity: critical
    annotations:
      summary: Prometheus all targets missing (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "A Prometheus job does not have living target anymore.\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusConfigurationReloadFailure
    expr: prometheus_config_last_reload_successful != 1
    for: 0m
    labels:
      severity: warning
    annotations:
      summary: Prometheus configuration reload failure (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Prometheus configuration reload error\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusTooManyRestarts
    expr: changes(process_start_time_seconds{job=~"prometheus|pushgateway|alertmanager"}[15m]) > 2
    for: 0m
    labels:
      severity: warning
    annotations:
      summary: Prometheus too many restarts (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Prometheus has restarted more than twice in the last 15 minutes. It might be crashlooping.\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusRuleEvaluationFailures
    expr: increase(prometheus_rule_evaluation_failures_total[3m]) > 0
    for: 0m
    labels:
      severity: critical
    annotations:
      summary: Prometheus rule evaluation failures (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Prometheus encountered {{ '{{' }} $value {{ '}}' }} rule evaluation failures, leading to potentially ignored alerts.\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusTemplateTextExpansionFailures
    expr: increase(prometheus_template_text_expansion_failures_total[3m]) > 0
    for: 0m
    labels:
      severity: critical
    annotations:
      summary: Prometheus template text expansion failures (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Prometheus encountered {{ '{{' }} $value {{ '}}' }} template text expansion failures\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusRuleEvaluationSlow
    expr: prometheus_rule_group_last_duration_seconds > prometheus_rule_group_interval_seconds
    for: 5m
    labels:
      severity: warning
    annotations:
      summary: Prometheus rule evaluation slow (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Prometheus rule evaluation took more time than the scheduled interval. It indicates a slower storage backend access or too complex query.\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusNotificationsBacklog
    expr: min_over_time(prometheus_notifications_queue_length[10m]) > 0
    for: 0m
    labels:
      severity: warning
    annotations:
      summary: Prometheus notifications backlog (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "The Prometheus notification queue has not been empty for 10 minutes\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusTargetEmpty
    expr: prometheus_sd_discovered_targets == 0
    for: 0m
    labels:
      severity: critical
    annotations:
      summary: Prometheus target empty (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Prometheus has no target in service discovery\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusTargetScrapingSlow
    expr: prometheus_target_interval_length_seconds{quantile="0.9"} > 60
    for: 5m
    labels:
      severity: warning
    annotations:
      summary: Prometheus target scraping slow (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Prometheus is scraping exporters slowly\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusLargeScrape
    expr: increase(prometheus_target_scrapes_exceeded_sample_limit_total[10m]) > 10
    for: 5m
    labels:
      severity: warning
    annotations:
      summary: Prometheus large scrape (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Prometheus has many scrapes that exceed the sample limit\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusTargetScrapeDuplicate
    expr: increase(prometheus_target_scrapes_sample_duplicate_timestamp_total[5m]) > 0
    for: 0m
    labels:
      severity: warning
    annotations:
      summary: Prometheus target scrape duplicate (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Prometheus has many samples rejected due to duplicate timestamps but different values\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusTsdbCheckpointCreationFailures
    expr: increase(prometheus_tsdb_checkpoint_creations_failed_total[1m]) > 0
    for: 0m
    labels:
      severity: critical
    annotations:
      summary: Prometheus TSDB checkpoint creation failures (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Prometheus encountered {{ '{{' }} $value {{ '}}' }} checkpoint creation failures\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusTsdbCheckpointDeletionFailures
    expr: increase(prometheus_tsdb_checkpoint_deletions_failed_total[1m]) > 0
    for: 0m
    labels:
      severity: critical
    annotations:
      summary: Prometheus TSDB checkpoint deletion failures (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Prometheus encountered {{ '{{' }} $value {{ '}}' }} checkpoint deletion failures\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusTsdbCompactionsFailed
    expr: increase(prometheus_tsdb_compactions_failed_total[1m]) > 0
    for: 0m
    labels:
      severity: critical
    annotations:
      summary: Prometheus TSDB compactions failed (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Prometheus encountered {{ '{{' }} $value {{ '}}' }} TSDB compactions failures\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusTsdbHeadTruncationsFailed
    expr: increase(prometheus_tsdb_head_truncations_failed_total[1m]) > 0
    for: 0m
    labels:
      severity: critical
    annotations:
      summary: Prometheus TSDB head truncations failed (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Prometheus encountered {{ '{{' }} $value {{ '}}' }} TSDB head truncation failures\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusTsdbReloadFailures
    expr: increase(prometheus_tsdb_reloads_failures_total[1m]) > 0
    for: 0m
    labels:
      severity: critical
    annotations:
      summary: Prometheus TSDB reload failures (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Prometheus encountered {{ '{{' }} $value {{ '}}' }} TSDB reload failures\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusTsdbWalCorruptions
    expr: increase(prometheus_tsdb_wal_corruptions_total[1m]) > 0
    for: 0m
    labels:
      severity: critical
    annotations:
      summary: Prometheus TSDB WAL corruptions (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Prometheus encountered {{ '{{' }} $value {{ '}}' }} TSDB WAL corruptions\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusTsdbWalTruncationsFailed
    expr: increase(prometheus_tsdb_wal_truncations_failed_total[1m]) > 0
    for: 0m
    labels:
      severity: critical
    annotations:
      summary: Prometheus TSDB WAL truncations failed (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Prometheus encountered {{ '{{' }} $value {{ '}}' }} TSDB WAL truncation failures\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"


prometheus_server_rules_prometheus_alertmanager:
  - alert: PrometheusAlertmanagerConfigurationReloadFailure
    expr: alertmanager_config_last_reload_successful != 1
    for: 0m
    labels:
      severity: warning
    annotations:
      summary: Prometheus AlertManager configuration reload failure (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "AlertManager configuration reload error\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusAlertmanagerConfigNotSynced
    expr: count(count_values("config_hash", alertmanager_config_hash)) > 1
    for: 0m
    labels:
      severity: warning
    annotations:
      summary: Prometheus AlertManager config not synced (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Configurations of AlertManager cluster instances are out of sync\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusAlertmanagerE2eDeadManSwitch
    expr: vector(1)
    for: 0m
    labels:
      severity: informational
      instance: prometheus
      timeout: 1200
    annotations:
      summary: Prometheus AlertManager E2E dead man switch (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Prometheus DeadManSwitch is an always-firing alert. It's used as an end-to-end test of Prometheus through the Alertmanager.\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusNotConnectedToAlertmanager
    expr: prometheus_notifications_alertmanagers_discovered < 1
    for: 0m
    labels:
      severity: critical
    annotations:
      summary: Prometheus not connected to alertmanager (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Prometheus cannot connect the alertmanager\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"

  - alert: PrometheusAlertmanagerNotificationFailing
    expr: rate(alertmanager_notifications_failed_total[1m]) > 0
    for: 0m
    labels:
      severity: critical
    annotations:
      summary: Prometheus AlertManager notification failing (instance {{ '{{' }} $labels.instance {{ '}}' }})
      description: "Alertmanager is failing sending notifications\n  VALUE = {{ '{{' }} $value {{ '}}' }}\n  LABELS = {{ '{{' }} $labels {{ '}}' }}"