apiVersion: v1
kind: ConfigMap
metadata:
  name: prometheus-rules
  namespace: monitoring
data:
  # Rules adapted from those provided by coreos/prometheus-operator and SoundCloud
  alertmanager.rules.yaml: |+
    groups:
    - name: ./alertmanager.rules
      rules:
      - alert: AlertmanagerConfigInconsistent
        expr: count_values("config_hash", alertmanager_config_hash) BY (service) / ON(service)
          GROUP_LEFT() label_replace(prometheus_operator_alertmanager_spec_replicas, "service",
          "alertmanager-$1", "alertmanager", "(.*)") != 1
        for: 5m
        labels:
          severity: critical
        annotations:
          description: The configuration of the instances of the Alertmanager cluster
            `{{$labels.service}}` are out of sync.
          summary: Alertmanager configurations are inconsistent
      - alert: AlertmanagerDownOrMissing
        expr: label_replace(prometheus_operator_alertmanager_spec_replicas, "job", "alertmanager-$1",
          "alertmanager", "(.*)") / ON(job) GROUP_RIGHT() sum(up) BY (job) != 1
        for: 5m
        labels:
          severity: warning
        annotations:
          description: An unexpected number of Alertmanagers are scraped or Alertmanagers
            disappeared from discovery.
          summary: Alertmanager down or not discovered
      - alert: FailedReload
        expr: alertmanager_config_last_reload_successful == 0
        for: 10m
        labels:
          severity: warning
        annotations:
          description: Reloading Alertmanager's configuration has failed for {{ $labels.namespace
            }}/{{ $labels.pod}}.
          summary: Alertmanager configuration reload has failed
  etcd3.rules.yaml: |+
    groups:
    - name: ./etcd3.rules
      rules:
      - alert: InsufficientMembers
        expr: count(up{job="etcd"} == 0) > (count(up{job="etcd"}) / 2 - 1)
        for: 3m
        labels:
          severity: critical
        annotations:
          description: If one more etcd member goes down the cluster will be unavailable
          summary: etcd cluster insufficient members
      - alert: NoLeader
        expr: etcd_server_has_leader{job="etcd"} == 0
        for: 1m
        labels:
          severity: critical
        annotations:
          description: etcd member {{ $labels.instance }} has no leader
          summary: etcd member has no leader
      - alert: HighNumberOfLeaderChanges
        expr: increase(etcd_server_leader_changes_seen_total{job="etcd"}[1h]) > 3
        labels:
          severity: warning
        annotations:
          description: etcd instance {{ $labels.instance }} has seen {{ $value }} leader
            changes within the last hour
          summary: a high number of leader changes within the etcd cluster are happening
      - alert: HighNumberOfFailedGRPCRequests
        expr: sum(rate(etcd_grpc_requests_failed_total{job="etcd"}[5m])) BY (grpc_method)
          / sum(rate(etcd_grpc_total{job="etcd"}[5m])) BY (grpc_method) > 0.01
        for: 10m
        labels:
          severity: warning
        annotations:
          description: '{{ $value }}% of requests for {{ $labels.grpc_method }} failed
            on etcd instance {{ $labels.instance }}'
          summary: a high number of gRPC requests are failing
      - alert: HighNumberOfFailedGRPCRequests
        expr: sum(rate(etcd_grpc_requests_failed_total{job="etcd"}[5m])) BY (grpc_method)
          / sum(rate(etcd_grpc_total{job="etcd"}[5m])) BY (grpc_method) > 0.05
        for: 5m
        labels:
          severity: critical
        annotations:
          description: '{{ $value }}% of requests for {{ $labels.grpc_method }} failed
            on etcd instance {{ $labels.instance }}'
          summary: a high number of gRPC requests are failing
      - alert: GRPCRequestsSlow
        expr: histogram_quantile(0.99, rate(etcd_grpc_unary_requests_duration_seconds_bucket[5m]))
          > 0.15
        for: 10m
        labels:
          severity: critical
        annotations:
          description: on etcd instance {{ $labels.instance }} gRPC requests to {{ $labels.grpc_method
            }} are slow
          summary: slow gRPC requests
      - alert: HighNumberOfFailedHTTPRequests
        expr: sum(rate(etcd_http_failed_total{job="etcd"}[5m])) BY (method) / sum(rate(etcd_http_received_total{job="etcd"}[5m]))
          BY (method) > 0.01
        for: 10m
        labels:
          severity: warning
        annotations:
          description: '{{ $value }}% of requests for {{ $labels.method }} failed on etcd
            instance {{ $labels.instance }}'
          summary: a high number of HTTP requests are failing
      - alert: HighNumberOfFailedHTTPRequests
        expr: sum(rate(etcd_http_failed_total{job="etcd"}[5m])) BY (method) / sum(rate(etcd_http_received_total{job="etcd"}[5m]))
          BY (method) > 0.05
        for: 5m
        labels:
          severity: critical
        annotations:
          description: '{{ $value }}% of requests for {{ $labels.method }} failed on etcd
            instance {{ $labels.instance }}'
          summary: a high number of HTTP requests are failing
      - alert: HTTPRequestsSlow
        expr: histogram_quantile(0.99, rate(etcd_http_successful_duration_seconds_bucket[5m]))
          > 0.15
        for: 10m
        labels:
          severity: warning
        annotations:
          description: on etcd instance {{ $labels.instance }} HTTP requests to {{ $labels.method
            }} are slow
          summary: slow HTTP requests
      - alert: EtcdMemberCommunicationSlow
        expr: histogram_quantile(0.99, rate(etcd_network_member_round_trip_time_seconds_bucket[5m]))
          > 0.15
        for: 10m
        labels:
          severity: warning
        annotations:
          description: etcd instance {{ $labels.instance }} member communication with
            {{ $labels.To }} is slow
          summary: etcd member communication is slow
      - alert: HighNumberOfFailedProposals
        expr: increase(etcd_server_proposals_failed_total{job="etcd"}[1h]) > 5
        labels:
          severity: warning
        annotations:
          description: etcd instance {{ $labels.instance }} has seen {{ $value }} proposal
            failures within the last hour
          summary: a high number of proposals within the etcd cluster are failing
      - alert: HighFsyncDurations
        expr: histogram_quantile(0.99, rate(etcd_disk_wal_fsync_duration_seconds_bucket[5m]))
          > 0.5
        for: 10m
        labels:
          severity: warning
        annotations:
          description: etcd instance {{ $labels.instance }} fync durations are high
          summary: high fsync durations
      - alert: HighCommitDurations
        expr: histogram_quantile(0.99, rate(etcd_disk_backend_commit_duration_seconds_bucket[5m]))
          > 0.25
        for: 10m
        labels:
          severity: warning
        annotations:
          description: etcd instance {{ $labels.instance }} commit durations are high
          summary: high commit durations
  general.rules.yaml: |+
    groups:
    - name: ./general.rules
      rules:
      - alert: TargetDown
        expr: 100 * (count(up == 0) BY (job) / count(up) BY (job)) > 10
        for: 10m
        labels:
          severity: warning
        annotations:
          description: '{{ $value }}% or more of {{ $labels.job }} targets are down.'
          summary: Targets are down
      - alert: TooManyOpenFileDescriptors
        expr: 100 * (process_open_fds / process_max_fds) > 95
        for: 10m
        labels:
          severity: critical
        annotations:
          description: '{{ $labels.job }}: {{ $labels.namespace }}/{{ $labels.pod }} ({{
            $labels.instance }}) is using {{ $value }}% of the available file/socket descriptors.'
          summary: too many open file descriptors
      - record: instance:fd_utilization
        expr: process_open_fds / process_max_fds
      - alert: FdExhaustionClose
        expr: predict_linear(instance:fd_utilization[1h], 3600 * 4) > 1
        for: 10m
        labels:
          severity: warning
        annotations:
          description: '{{ $labels.job }}: {{ $labels.namespace }}/{{ $labels.pod }} ({{
            $labels.instance }}) instance will exhaust in file/socket descriptors soon'
          summary: file descriptors soon exhausted
      - alert: FdExhaustionClose
        expr: predict_linear(instance:fd_utilization[10m], 3600) > 1
        for: 10m
        labels:
          severity: critical
        annotations:
          description: '{{ $labels.job }}: {{ $labels.namespace }}/{{ $labels.pod }} ({{
            $labels.instance }}) instance will exhaust in file/socket descriptors soon'
          summary: file descriptors soon exhausted
  kube-apiserver.rules.yaml: |+
    groups:
    - name: ./kube-apiserver.rules
      rules:
      - alert: K8SApiserverDown
        expr: absent(up{job="kubernetes-apiservers"} == 1)
        for: 5m
        labels:
          severity: critical
        annotations:
          description: Prometheus failed to scrape API server(s), or all API servers have
            disappeared from service discovery.
          summary: API server unreachable
      - alert: K8SApiServerLatency
        expr: histogram_quantile(0.99, sum(rate(apiserver_request_latencies_bucket{subresource!="log",verb!~"^(?:CONNECT|WATCHLIST|WATCH|PROXY)$"}[10m]))
          by (le)) / 1e+06 > 1
        for: 10m
        labels:
          severity: warning
        annotations:
          description: 99th percentile Latency for {{ $labels.verb }} requests to the
            kube-apiserver is higher than 1s.
          summary: Kubernetes apiserver latency is high
  kube-controller-manager.rules.yaml: |+
    groups:
    - name: ./kube-controller-manager.rules
      rules:
      - alert: K8SControllerManagerDown
        expr: absent(up{kubernetes_name="kube-controller-manager"} == 1)
        for: 5m
        labels:
          severity: critical
        annotations:
          description: There is no running K8S controller manager. Deployments and replication
            controllers are not making progress.
          summary: Controller manager is down
  kube-scheduler.rules.yaml: |+
    groups:
    - name: ./kube-scheduler.rules
      rules:
      - alert: K8SSchedulerDown
        expr: absent(up{kubernetes_name="kube-scheduler"} == 1)
        for: 5m
        labels:
          severity: critical
        annotations:
          description: There is no running K8S scheduler. New pods are not being assigned
            to nodes.
          summary: Scheduler is down
  kubelet.rules.yaml: |+
    groups:
    - name: ./kubelet.rules
      rules:
      - alert: K8SNodeNotReady
        expr: kube_node_status_condition{condition="Ready",status="true"} == 0
        for: 1h
        labels:
          severity: warning
        annotations:
          description: The Kubelet on {{ $labels.node }} has not checked in with the API,
            or has set itself to NotReady, for more than an hour
          summary: Node status is NotReady
      - alert: K8SManyNodesNotReady
        expr: count(kube_node_status_condition{condition="Ready",status="true"} == 0)
          > 1 and (count(kube_node_status_condition{condition="Ready",status="true"} ==
          0) / count(kube_node_status_condition{condition="Ready",status="true"})) > 0.2
        for: 1m
        labels:
          severity: critical
        annotations:
          description: '{{ $value }} Kubernetes nodes (more than 10% are in the NotReady
            state).'
          summary: Many Kubernetes nodes are Not Ready
      - alert: K8SKubeletDown
        expr: count(up{job="kubernetes-nodes"} == 0) / count(up{job="kubernetes-nodes"}) > 0.03
        for: 1h
        labels:
          severity: warning
        annotations:
          description: Prometheus failed to scrape {{ $value }}% of kubelets.
          summary: Many Kubelets cannot be scraped
      - alert: K8SKubeletDown
        expr: absent(up{job="kubernetes-nodes"} == 1) or count(up{job="kubernetes-nodes"} == 0) / count(up{job="kubernetes-nodes"})
          > 0.1
        for: 1h
        labels:
          severity: critical
        annotations:
          description: Prometheus failed to scrape {{ $value }}% of kubelets, or all Kubelets
            have disappeared from service discovery.
          summary: Many Kubelets cannot be scraped
      - alert: K8SKubeletTooManyPods
        expr: kubelet_running_pod_count > 100
        labels:
          severity: warning
        annotations:
          description: Kubelet {{$labels.instance}} is running {{$value}} pods, close
            to the limit of 110
          summary: Kubelet is close to pod limit
  kubernetes.rules.yaml: |+
    groups:
    - name: ./kubernetes.rules
      rules:
      - record: cluster_namespace_controller_pod_container:spec_memory_limit_bytes
        expr: sum(label_replace(container_spec_memory_limit_bytes{container_name!=""},
          "controller", "$1", "pod_name", "^(.*)-[a-z0-9]+")) BY (cluster, namespace,
          controller, pod_name, container_name)
      - record: cluster_namespace_controller_pod_container:spec_cpu_shares
        expr: sum(label_replace(container_spec_cpu_shares{container_name!=""}, "controller",
          "$1", "pod_name", "^(.*)-[a-z0-9]+")) BY (cluster, namespace, controller, pod_name,
          container_name)
      - record: cluster_namespace_controller_pod_container:cpu_usage:rate
        expr: sum(label_replace(irate(container_cpu_usage_seconds_total{container_name!=""}[5m]),
          "controller", "$1", "pod_name", "^(.*)-[a-z0-9]+")) BY (cluster, namespace,
          controller, pod_name, container_name)
      - record: cluster_namespace_controller_pod_container:memory_usage:bytes
        expr: sum(label_replace(container_memory_usage_bytes{container_name!=""}, "controller",
          "$1", "pod_name", "^(.*)-[a-z0-9]+")) BY (cluster, namespace, controller, pod_name,
          container_name)
      - record: cluster_namespace_controller_pod_container:memory_working_set:bytes
        expr: sum(label_replace(container_memory_working_set_bytes{container_name!=""},
          "controller", "$1", "pod_name", "^(.*)-[a-z0-9]+")) BY (cluster, namespace,
          controller, pod_name, container_name)
      - record: cluster_namespace_controller_pod_container:memory_rss:bytes
        expr: sum(label_replace(container_memory_rss{container_name!=""}, "controller",
          "$1", "pod_name", "^(.*)-[a-z0-9]+")) BY (cluster, namespace, controller, pod_name,
          container_name)
      - record: cluster_namespace_controller_pod_container:memory_cache:bytes
        expr: sum(label_replace(container_memory_cache{container_name!=""}, "controller",
          "$1", "pod_name", "^(.*)-[a-z0-9]+")) BY (cluster, namespace, controller, pod_name,
          container_name)
      - record: cluster_namespace_controller_pod_container:disk_usage:bytes
        expr: sum(label_replace(container_disk_usage_bytes{container_name!=""}, "controller",
          "$1", "pod_name", "^(.*)-[a-z0-9]+")) BY (cluster, namespace, controller, pod_name,
          container_name)
      - record: cluster_namespace_controller_pod_container:memory_pagefaults:rate
        expr: sum(label_replace(irate(container_memory_failures_total{container_name!=""}[5m]),
          "controller", "$1", "pod_name", "^(.*)-[a-z0-9]+")) BY (cluster, namespace,
          controller, pod_name, container_name, scope, type)
      - record: cluster_namespace_controller_pod_container:memory_oom:rate
        expr: sum(label_replace(irate(container_memory_failcnt{container_name!=""}[5m]),
          "controller", "$1", "pod_name", "^(.*)-[a-z0-9]+")) BY (cluster, namespace,
          controller, pod_name, container_name, scope, type)
      - record: cluster:memory_allocation:percent
        expr: 100 * sum(container_spec_memory_limit_bytes{pod_name!=""}) BY (cluster)
          / sum(machine_memory_bytes) BY (cluster)
      - record: cluster:memory_used:percent
        expr: 100 * sum(container_memory_usage_bytes{pod_name!=""}) BY (cluster) / sum(machine_memory_bytes)
          BY (cluster)
      - record: cluster:cpu_allocation:percent
        expr: 100 * sum(container_spec_cpu_shares{pod_name!=""}) BY (cluster) / sum(container_spec_cpu_shares{id="/"}
          * ON(cluster, instance) machine_cpu_cores) BY (cluster)
      - record: cluster:node_cpu_use:percent
        expr: 100 * sum(rate(node_cpu{mode!="idle"}[5m])) BY (cluster) / sum(machine_cpu_cores)
          BY (cluster)
      - record: cluster_resource_verb:apiserver_latency:quantile_seconds
        expr: histogram_quantile(0.99, sum(apiserver_request_latencies_bucket) BY (le,
          cluster, job, resource, verb)) / 1e+06
        labels:
          quantile: "0.99"
      - record: cluster_resource_verb:apiserver_latency:quantile_seconds
        expr: histogram_quantile(0.9, sum(apiserver_request_latencies_bucket) BY (le,
          cluster, job, resource, verb)) / 1e+06
        labels:
          quantile: "0.9"
      - record: cluster_resource_verb:apiserver_latency:quantile_seconds
        expr: histogram_quantile(0.5, sum(apiserver_request_latencies_bucket) BY (le,
          cluster, job, resource, verb)) / 1e+06
        labels:
          quantile: "0.5"
      - record: cluster:scheduler_e2e_scheduling_latency:quantile_seconds
        expr: histogram_quantile(0.99, sum(scheduler_e2e_scheduling_latency_microseconds_bucket)
          BY (le, cluster)) / 1e+06
        labels:
          quantile: "0.99"
      - record: cluster:scheduler_e2e_scheduling_latency:quantile_seconds
        expr: histogram_quantile(0.9, sum(scheduler_e2e_scheduling_latency_microseconds_bucket)
          BY (le, cluster)) / 1e+06
        labels:
          quantile: "0.9"
      - record: cluster:scheduler_e2e_scheduling_latency:quantile_seconds
        expr: histogram_quantile(0.5, sum(scheduler_e2e_scheduling_latency_microseconds_bucket)
          BY (le, cluster)) / 1e+06
        labels:
          quantile: "0.5"
      - record: cluster:scheduler_scheduling_algorithm_latency:quantile_seconds
        expr: histogram_quantile(0.99, sum(scheduler_scheduling_algorithm_latency_microseconds_bucket)
          BY (le, cluster)) / 1e+06
        labels:
          quantile: "0.99"
      - record: cluster:scheduler_scheduling_algorithm_latency:quantile_seconds
        expr: histogram_quantile(0.9, sum(scheduler_scheduling_algorithm_latency_microseconds_bucket)
          BY (le, cluster)) / 1e+06
        labels:
          quantile: "0.9"
      - record: cluster:scheduler_scheduling_algorithm_latency:quantile_seconds
        expr: histogram_quantile(0.5, sum(scheduler_scheduling_algorithm_latency_microseconds_bucket)
          BY (le, cluster)) / 1e+06
        labels:
          quantile: "0.5"
      - record: cluster:scheduler_binding_latency:quantile_seconds
        expr: histogram_quantile(0.99, sum(scheduler_binding_latency_microseconds_bucket)
          BY (le, cluster)) / 1e+06
        labels:
          quantile: "0.99"
      - record: cluster:scheduler_binding_latency:quantile_seconds
        expr: histogram_quantile(0.9, sum(scheduler_binding_latency_microseconds_bucket)
          BY (le, cluster)) / 1e+06
        labels:
          quantile: "0.9"
      - record: cluster:scheduler_binding_latency:quantile_seconds
        expr: histogram_quantile(0.5, sum(scheduler_binding_latency_microseconds_bucket)
          BY (le, cluster)) / 1e+06
        labels:
          quantile: "0.5"
  node.rules.yaml: |+
    groups:
    - name: ./node.rules
      rules:
      - alert: NodeExporterDown
        expr: absent(up{kubernetes_name="node-exporter"} == 1)
        for: 10m
        labels:
          severity: warning
        annotations:
          description: Prometheus could not scrape a node-exporter for more than 10m,
            or node-exporters have disappeared from discovery.
          summary: node-exporter cannot be scraped
      - alert: K8SNodeOutOfDisk
        expr: kube_node_status_condition{condition="OutOfDisk",status="true"} == 1
        labels:
          service: k8s
          severity: critical
        annotations:
          description: '{{ $labels.node }} has run out of disk space.'
          summary: Node ran out of disk space.
      - alert: K8SNodeMemoryPressure
        expr: kube_node_status_condition{condition="MemoryPressure",status="true"} ==
          1
        labels:
          service: k8s
          severity: warning
        annotations:
          description: '{{ $labels.node }} is under memory pressure.'
          summary: Node is under memory pressure.
      - alert: K8SNodeDiskPressure
        expr: kube_node_status_condition{condition="DiskPressure",status="true"} == 1
        labels:
          service: k8s
          severity: warning
        annotations:
          description: '{{ $labels.node }} is under disk pressure.'
          summary: Node is under disk pressure.
  prometheus.rules.yaml: |+
    groups:
    - name: ./prometheus.rules
      rules:
      - alert: FailedReload
        expr: prometheus_config_last_reload_successful == 0
        for: 10m
        labels:
          severity: warning
        annotations:
          description: Reloading Prometheus' configuration has failed for {{ $labels.namespace
            }}/{{ $labels.pod}}.
          summary: Prometheus configuration reload has failed