{
   "apiVersion": "monitoring.coreos.com/v1",
   "kind": "PrometheusRule",
   "metadata": {
      "labels": {
         "app.kubernetes.io/component": "exporter",
         "app.kubernetes.io/name": "kube-prometheus",
         "app.kubernetes.io/part-of": "kube-prometheus",
         "prometheus": "k8s",
         "role": "alert-rules"
      },
      "name": "kube-prometheus-rules",
      "namespace": "monitoring"
   },
   "spec": {
      "groups": [
         {
            "name": "general.rules",
            "rules": [
               {
                  "alert": "TargetDown",
                  "annotations": {
                     "description": "{{ printf \"%.4g\" $value }}% of the {{ $labels.job }}/{{ $labels.service }} targets in {{ $labels.namespace }} namespace are down.",
                     "runbook_url": "https://runbooks.prometheus-operator.dev/runbooks/general/targetdown",
                     "summary": "One or more targets are unreachable."
                  },
                  "expr": "100 * (count(up == 0) BY (cluster, job, namespace, service) / count(up) BY (cluster, job, namespace, service)) > 10",
                  "for": "10m",
                  "labels": {
                     "severity": "warning"
                  }
               },
               {
                  "alert": "Watchdog",
                  "annotations": {
                     "description": "This is an alert meant to ensure that the entire alerting pipeline is functional.\nThis alert is always firing, therefore it should always be firing in Alertmanager\nand always fire against a receiver. There are integrations with various notification\nmechanisms that send a notification when this alert is not firing. For example the\n\"DeadMansSnitch\" integration in PagerDuty.\n",
                     "runbook_url": "https://runbooks.prometheus-operator.dev/runbooks/general/watchdog",
                     "summary": "An alert that should always be firing to certify that Alertmanager is working properly."
                  },
                  "expr": "vector(1)",
                  "labels": {
                     "severity": "none"
                  }
               },
               {
                  "alert": "InfoInhibitor",
                  "annotations": {
                     "description": "This is an alert that is used to inhibit info alerts.\nBy themselves, the info-level alerts are sometimes very noisy, but they are relevant when combined with\nother alerts.\nThis alert fires whenever there's a severity=\"info\" alert, and stops firing when another alert with a\nseverity of 'warning' or 'critical' starts firing on the same namespace.\nThis alert should be routed to a null receiver and configured to inhibit alerts with severity=\"info\".\n",
                     "runbook_url": "https://runbooks.prometheus-operator.dev/runbooks/general/infoinhibitor",
                     "summary": "Info-level alert inhibition."
                  },
                  "expr": "ALERTS{severity = \"info\"} == 1 unless on(namespace) ALERTS{alertname != \"InfoInhibitor\", severity =~ \"warning|critical\", alertstate=\"firing\"} == 1",
                  "labels": {
                     "severity": "none"
                  }
               }
            ]
         },
         {
            "name": "node-network",
            "rules": [
               {
                  "alert": "NodeNetworkInterfaceFlapping",
                  "annotations": {
                     "description": "Network interface \"{{ $labels.device }}\" changing its up status often on node-exporter {{ $labels.namespace }}/{{ $labels.pod }}",
                     "runbook_url": "https://runbooks.prometheus-operator.dev/runbooks/general/nodenetworkinterfaceflapping",
                     "summary": "Network interface is often changing its status"
                  },
                  "expr": "changes(node_network_up{job=\"node-exporter\",device!~\"veth.+\"}[2m]) > 2\n",
                  "for": "2m",
                  "labels": {
                     "severity": "warning"
                  }
               }
            ]
         },
         {
            "name": "kube-prometheus-node-recording.rules",
            "rules": [
               {
                  "expr": "sum(rate(node_cpu_seconds_total{mode!=\"idle\",mode!=\"iowait\",mode!=\"steal\"}[3m])) BY (instance)",
                  "record": "instance:node_cpu:rate:sum"
               },
               {
                  "expr": "sum(rate(node_network_receive_bytes_total[3m])) BY (instance)",
                  "record": "instance:node_network_receive_bytes:rate:sum"
               },
               {
                  "expr": "sum(rate(node_network_transmit_bytes_total[3m])) BY (instance)",
                  "record": "instance:node_network_transmit_bytes:rate:sum"
               },
               {
                  "expr": "sum(rate(node_cpu_seconds_total{mode!=\"idle\",mode!=\"iowait\",mode!=\"steal\"}[5m])) WITHOUT (cpu, mode) / ON(instance) GROUP_LEFT() count(sum(node_cpu_seconds_total) BY (instance, cpu)) BY (instance)",
                  "record": "instance:node_cpu:ratio"
               },
               {
                  "expr": "sum(rate(node_cpu_seconds_total{mode!=\"idle\",mode!=\"iowait\",mode!=\"steal\"}[5m]))",
                  "record": "cluster:node_cpu:sum_rate5m"
               },
               {
                  "expr": "cluster:node_cpu:sum_rate5m / count(sum(node_cpu_seconds_total) BY (instance, cpu))",
                  "record": "cluster:node_cpu:ratio"
               }
            ]
         },
         {
            "name": "kube-prometheus-general.rules",
            "rules": [
               {
                  "expr": "count without(instance, pod, node) (up == 1)",
                  "record": "count:up1"
               },
               {
                  "expr": "count without(instance, pod, node) (up == 0)",
                  "record": "count:up0"
               }
            ]
         }
      ]
   }
}
