apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  name: {{ printf "%s-%s" (include "kubezero-lib.fullname" $) "prometheus" | trunc 63 | trimSuffix "-" }}
  namespace: {{ .Release.Namespace }}
  labels:
    {{- include "kubezero-lib.labels" . | nindent 4 }}
spec:
  groups:
  - name: prometheus
    rules:
    - alert: PrometheusBadConfig
      annotations:
        description: Prometheus {{`{{`}}$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-k8s",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\n# https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details.\n(\n  predict_linear(prometheus_notifications_queue_length{job=\"prometheus-k8s\",namespace=\"monitoring\"}[5m], 60 * 30)\n>\n  min_over_time(prometheus_notifications_queue_capacity{job=\"prometheus-k8s\",namespace=\"monitoring\"}[5m])\n)\n"
      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: "(\n  rate(prometheus_notifications_errors_total{job=\"prometheus-k8s\",namespace=\"monitoring\"}[5m])\n/\n  rate(prometheus_notifications_sent_total{job=\"prometheus-k8s\",namespace=\"monitoring\"}[5m])\n)\n* 100\n> 1\n"
      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-k8s",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-k8s",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-k8s",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: "(\n  rate(prometheus_tsdb_head_samples_appended_total{job=\"prometheus-k8s\",namespace=\"monitoring\"}[5m]) <= 0\nand\n  (\n    sum without(scrape_job) (prometheus_target_metadata_cache_entries{job=\"prometheus-k8s\",namespace=\"monitoring\"}) > 0\n  or\n    sum without(rule_group) (prometheus_rule_group_rules{job=\"prometheus-k8s\",namespace=\"monitoring\"}) > 0\n  )\n)\n"
      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-k8s",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-k8s",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{{`}}`}}:{{`{{`}} $labels.url {{`}}`}}
        runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheusremotestoragefailures
        summary: Prometheus fails to send samples to remote storage.
      expr: "(\n  (rate(prometheus_remote_storage_failed_samples_total{job=\"prometheus-k8s\",namespace=\"monitoring\"}[5m]) or rate(prometheus_remote_storage_samples_failed_total{job=\"prometheus-k8s\",namespace=\"monitoring\"}[5m]))\n/\n  (\n    (rate(prometheus_remote_storage_failed_samples_total{job=\"prometheus-k8s\",namespace=\"monitoring\"}[5m]) or rate(prometheus_remote_storage_samples_failed_total{job=\"prometheus-k8s\",namespace=\"monitoring\"}[5m]))\n  +\n    (rate(prometheus_remote_storage_succeeded_samples_total{job=\"prometheus-k8s\",namespace=\"monitoring\"}[5m]) or rate(prometheus_remote_storage_samples_total{job=\"prometheus-k8s\",namespace=\"monitoring\"}[5m]))\n  )\n)\n* 100\n> 1\n"
      for: 15m
      labels:
        severity: critical
    - alert: PrometheusRemoteWriteBehind
      annotations:
        description: Prometheus {{`{{`}}$labels.namespace{{`}}`}}/{{`{{`}}$labels.pod{{`}}`}} remote write is {{`{{`}} printf "%.1f" $value {{`}}`}}s behind for {{`{{`}} $labels.remote_name{{`}}`}}:{{`{{`}} $labels.url {{`}}`}}.
        runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheusremotewritebehind
        summary: Prometheus remote write is behind.
      expr: "# Without max_over_time, failed scrapes could create false negatives, see\n# https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details.\n(\n  max_over_time(prometheus_remote_storage_highest_timestamp_in_seconds{job=\"prometheus-k8s\",namespace=\"monitoring\"}[5m])\n- ignoring(remote_name, url) group_right\n  max_over_time(prometheus_remote_storage_queue_highest_sent_timestamp_seconds{job=\"prometheus-k8s\",namespace=\"monitoring\"}[5m])\n)\n> 120\n"
      for: 15m
      labels:
        severity: critical
    - alert: PrometheusRemoteWriteDesiredShards
      annotations:
        description: Prometheus {{`{{`}}$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-k8s",namespace="monitoring"}` $labels.instance | query | first | value {{`}}`}}.
        runbook_url: https://runbooks.prometheus-operator.dev/runbooks/prometheus/prometheusremotewritedesiredshards
        summary: Prometheus remote write desired shards calculation wants to run more than configured max shards.
      expr: "# Without max_over_time, failed scrapes could create false negatives, see\n# https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details.\n(\n  max_over_time(prometheus_remote_storage_shards_desired{job=\"prometheus-k8s\",namespace=\"monitoring\"}[5m])\n>\n  max_over_time(prometheus_remote_storage_shards_max{job=\"prometheus-k8s\",namespace=\"monitoring\"}[5m])\n)\n"
      for: 15m
      labels:
        severity: warning
    - alert: PrometheusRuleFailures
      annotations:
        description: Prometheus {{`{{`}}$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-k8s",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-k8s",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-k8s",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-k8s",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-k8s",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-k8s",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-k8s",namespace="monitoring"}[30m]) > 0

        '
      for: 5m
      labels:
        severity: critical
    - 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) (\n  rate(prometheus_notifications_errors_total{job=\"prometheus-k8s\",namespace=\"monitoring\",alertmanager!~``}[5m])\n/\n  rate(prometheus_notifications_sent_total{job=\"prometheus-k8s\",namespace=\"monitoring\",alertmanager!~``}[5m])\n)\n* 100\n> 3\n"
      for: 15m
      labels:
        severity: critical