--- apiVersion: monitoring.coreos.com/v1 kind: PrometheusRule metadata: name: prometheus-core-deployment-rules namespace: prometheus spec: groups: - name: memory_high rules: - alert: MemoryHigh expr: round((((node_memory_MemTotal_bytes - node_memory_MemAvailable_bytes) / node_memory_MemTotal_bytes) * 100), 0.1) > 80 for: 5m labels: severity: warning annotations: summary: "Memory over 80%" description: "Memory on node {{ $labels.node }} is over 80% for more than 5 minutes. Plox fix. Memory usage: {{ $value }}%" - name: diskspace_low_worker rules: - alert: DiskspaceLow expr: round(node_filesystem_avail_bytes{mountpoint="/", node=~"worker.*"} / 1073742000, 0.1) < 50 for: 1m labels: severity: warning annotations: summary: "Free disk space below 10 GB" description: "Disk space on server {{ $labels.node }} is under 10 GB. Plox fix. Free Space: {{ $value }} GB on partition {{ $labels.device }}" - name: diskspace_low_master rules: - alert: DiskspaceLow expr: round(node_filesystem_avail_bytes{mountpoint="/", node=~"master.*"} / 1073742000, 0.1) < 10 for: 1m labels: severity: warning annotations: summary: "Free disk space below 2 GB" description: "Disk space on server {{ $labels.node }} is under 2 GB. Plox fix. Free Space: {{ $value }} GB on partition {{ $labels.device }}" - name: KubernetesUnhealthyPod rules: - alert: KubernetesUnhealthyPod expr: kube_pod_container_status_waiting_reason == 1 for: 5m labels: severity: warning annotations: summary: "The Pod {{ $labels.pod }} is {{ $labels.reason }}" description: "The Pod {{ $labels.pod }} is in the state {{ $labels.reason }} for more than 5m. The Pod is in namespace {{ $labels.namespace }} and on node {{ $labels.node }}." - name: PrometheusTargetMissing rules: - alert: PrometheusTargetMissing expr: up == 0 for: 3m labels: severity: critical annotations: summary: Prometheus target missing (instance {{ $labels.instance }}) description: "A Prometheus target has disappeared. {{if ne $labels.job \"\"}}\n Job: {{ $labels.job }}{{end}}{{if ne $labels.app \"\"}}\n App: {{ $labels.app }}{{end}}{{if ne $labels.pod \"\"}}\n Pod: {{ $labels.pod }}{{end}}{{if ne $labels.node \"\"}}\n Node: {{ $labels.node }}{{end}}{{if ne $labels.namespace \"\"}}\n Namespace: {{ $labels.namespace }}{{end}}" - name: PrometheusConfigurationReloadFailure rules: - alert: PrometheusConfigurationReloadFailure expr: prometheus_config_last_reload_successful != 1 for: 3m labels: severity: critical annotations: summary: Prometheus configuration reload failure (instance {{ $labels.instance }}) description: "Prometheus configuration reload error\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" - name: PrometheusAlertmanagerConfigurationReloadFailure rules: - alert: PrometheusAlertmanagerConfigurationReloadFailure expr: alertmanager_config_last_reload_successful != 1 for: 3m labels: severity: critical annotations: summary: Prometheus AlertManager configuration reload failure (instance {{ $labels.instance }}) description: "AlertManager configuration reload error\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" - name: PrometheusAlertmanagerConfigNotSynced rules: - alert: PrometheusAlertmanagerConfigNotSynced expr: count(count_values("config_hash", alertmanager_config_hash)) > 1 for: 3m 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 }}" - name: PrometheusTargetEmpty rules: - alert: PrometheusTargetEmpty expr: prometheus_sd_discovered_targets == 0 for: 3m 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 }}" - name: PrometheusTargetScrapingSlow rules: - alert: PrometheusTargetScrapingSlow expr: prometheus_target_interval_length_seconds{quantile="0.9"} > 120 for: 5m labels: severity: warning annotations: summary: Prometheus target scraping (instance {{ $labels.instance }}) description: "Prometheus is scraping exporters ly\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" - name: PrometheusLargeScrape rules: - 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 }}" - name: HostMemoryUnderMemoryPressure rules: - alert: HostMemoryUnderMemoryPressure expr: rate(node_vmstat_pgmajfault[1m]) > 1000 for: 2m labels: severity: warning annotations: summary: Host memory under memory pressure {{ $labels.node }} description: "The node is under heavy memory pressure. High rate of major page faults\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" - name: HostUnusualDiskReadRate rules: - alert: HostUnusualDiskReadRate expr: sum by (instance) (rate(node_disk_read_bytes_total[2m])) / 1024 / 1024 > 200 for: 5m labels: severity: warning annotations: summary: Host unusual disk read rate {{ $labels.node }} description: "Disk is probably reading too much data (> 200 MB/s)\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" - name: HostUnusualDiskWriteRate rules: - alert: HostUnusualDiskWriteRate expr: sum by (instance) (rate(node_disk_written_bytes_total[2m])) / 1024 / 1024 > 200 for: 3m labels: severity: warning annotations: summary: Host unusual disk write rate {{ $labels.node }} description: "Disk is probably writing too much data (> 200 MB/s)\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" - name: HostCpuStealNoisyNeighbor rules: - alert: HostCpuStealNoisyNeighbor expr: avg by(instance) (rate(node_cpu_seconds_total{mode="steal"}[5m])) * 100 > 10 for: 1m labels: severity: warning annotations: summary: Host CPU steal noisy neighbor {{ $labels.node }} description: "CPU steal is > 10%. A noisy neighbor is killing VM performances or a spot instance may be out of credit.\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" - name: HostPhysicalComponentTooHot rules: - alert: HostPhysicalComponentTooHot expr: node_hwmon_temp_celsius > 85 for: 5m labels: severity: warning annotations: summary: Host physical component too hot {{ $labels.node }} description: "Physical hardware component too hot\n Sensor = {{ $labels.sensor }}\n Temp = {{ $value }}" - name: SMARTbad rules: - alert: SMARTbad expr: smartmon_device_smart_healthy < 1 for: 0m labels: severity: critical annotations: summary: SMART check bad of drive {{ $labels.exported_disk }} in server {{ $labels.node }} description: "SMART check returned bad health of {{ $labels.exported_disk }} in server {{ $labels.node }}. VALUE = {{ $value }}\n LABELS = {{ $labels }}" - name: SMARTcheck_old rules: - alert: "SMARTcheck too old" expr: (time() - smartmon_smartctl_run) > 10800 labels: severity: warning annotations: summary: "SMARTcheck not running" description: 'The last SMARTcheck on server {{ $labels.node }} was more than 3h ago. Plox fix.'