prometheus-high-performance.yaml

apiVersion: template.openshift.io/v1
kind: Template
metadata:
  name: prometheus
  annotations:
    "openshift.io/display-name": Prometheus
    description: |
      A monitoring solution for an OpenShift cluster - collect and gather metrics from nodes, services, and the infrastructure. This is a tech preview feature.
    iconClass: icon-cogs
    tags: "monitoring,prometheus,time-series"
parameters:
- description: The namespace to instantiate prometheus under. Defaults to 'kube-system'.
  name: NAMESPACE
  value: kube-system
- description: The location of the proxy image
  name: IMAGE_PROXY
  value: openshift/oauth-proxy:v1.0.0
- description: The location of the prometheus image
  name: IMAGE_PROMETHEUS
  value: openshift/prometheus:v2.0.0-dev
- description: The session secret for the proxy
  name: SESSION_SECRET
  generate: expression
  from: "[a-zA-Z0-9]{43}"
- description: Time interval for scrape config (1m, 5s)
  name: SCRAPE_INTERVAL
  value: 15s
objects:
# Authorize the prometheus service account to read data about the cluster
- apiVersion: v1
  kind: ServiceAccount
  metadata:
    name: prometheus
    namespace: "${NAMESPACE}"
    annotations:
      serviceaccounts.openshift.io/oauth-redirectreference.primary: '{"kind":"OAuthRedirectReference","apiVersion":"v1","reference":{"kind":"Route","name":"prometheus"}}'
- apiVersion: authorization.openshift.io/v1
  kind: ClusterRoleBinding
  metadata:
    name: prometheus-cluster-reader
  roleRef:
    name: cluster-reader
  subjects:
  - kind: ServiceAccount
    name: prometheus
    namespace: "${NAMESPACE}"
# Create a fully end-to-end TLS connection to the proxy
- apiVersion: route.openshift.io/v1
  kind: Route
  metadata:
    name: prometheus
    namespace: "${NAMESPACE}"
  spec:
    to:
      name: prometheus
    tls:
      termination: Reencrypt
- apiVersion: v1
  kind: Service
  metadata:
    annotations:
      prometheus.io/scrape: "true"
      prometheus.io/scheme: https
      service.alpha.openshift.io/serving-cert-secret-name: prometheus-tls
    labels:
      name: prometheus
    name: prometheus
    namespace: "${NAMESPACE}"
  spec:
    ports:
    - name: prometheus
      port: 443
      protocol: TCP
      targetPort: 8443
    selector:
      app: prometheus
- apiVersion: v1
  kind: Secret
  metadata:
    name: prometheus-proxy
    namespace: "${NAMESPACE}"
  stringData:
    session_secret: "${SESSION_SECRET}="
# Deploy Prometheus behind an oauth proxy
- apiVersion: extensions/v1beta1
  kind: Deployment
  metadata:
    labels:
      app: prometheus
    name: prometheus
    namespace: "${NAMESPACE}"
  spec:
    replicas: 1
    selector:
      matchLabels:
        app: prometheus
    template:
      metadata:
        labels:
          app: prometheus
        name: prometheus
      spec:
        serviceAccountName: prometheus
        containers:
        - name: oauth-proxy
          image: ${IMAGE_PROXY}
          imagePullPolicy: IfNotPresent
          ports:
          - containerPort: 8443
            name: web
          args:
          - -https-address=:8443
          - -email-domain=*
          - -client-id=system:serviceaccount:${NAMESPACE}:prometheus
          - -upstream=http://localhost:9090
          - -provider=openshift
          - -redirect-url=https:///oauth2/callback
          - '-openshift-sar={"namespace": "${NAMESPACE}", "verb": "list", "resource": "services"}'
          - -tls-cert=/etc/tls/private/tls.crt
          - -tls-key=/etc/tls/private/tls.key
          - -client-secret-file=/var/run/secrets/kubernetes.io/serviceaccount/token
          - -cookie-secret-file=/etc/proxy/secrets/session_secret
          - -skip-auth-regex=^/metrics
          volumeMounts:
          - mountPath: /etc/tls/private
            name: prometheus-tls
          - mountPath: /etc/proxy/secrets
            name: secrets

        - name: prometheus
          args:
          - --storage.tsdb.retention=6h
          - --storage.tsdb.min-block-duration=5s
          - --storage.tsdb.max-block-duration=6m
          - --query.timeout=10s
          - --query.max-concurrency=50
          - --log.level=error
          - --config.file=/etc/prometheus/prometheus.yml
          - --web.listen-address=localhost:9090
          - --web.max-connections=150
          image: ${IMAGE_PROMETHEUS}
          imagePullPolicy: IfNotPresent
          volumeMounts:
          - mountPath: /etc/prometheus
            name: config-volume
          - mountPath: /prometheus
            name: data-volume

        restartPolicy: Always
        volumes:
        - configMap:
            defaultMode: 420
            name: prometheus
          name: config-volume
        - name: secrets
          secret:
            secretName: prometheus-proxy
        - name: prometheus-tls
          secret:
            secretName: prometheus-tls
        - emptyDir: {}
          name: data-volume
- apiVersion: v1
  kind: ConfigMap
  metadata:
    name: prometheus
    namespace: "${NAMESPACE}"
  data:
    prometheus.yml: |
      global:
        scrape_interval:     "${SCRAPE_INTERVAL}"

      # A scrape configuration for running Prometheus on a Kubernetes cluster.
      # This uses separate scrape configs for cluster components (i.e. API server, node)
      # and services to allow each to use different authentication configs.
      #
      # Kubernetes labels will be added as Prometheus labels on metrics via the
      # `labelmap` relabeling action.

      # Scrape config for API servers.
      #
      # Kubernetes exposes API servers as endpoints to the default/kubernetes
      # service so this uses `endpoints` role and uses relabelling to only keep
      # the endpoints associated with the default/kubernetes service using the
      # default named port `https`. This works for single API server deployments as
      # well as HA API server deployments.
      scrape_configs:
      - job_name: 'kubernetes-apiservers'

        kubernetes_sd_configs:
        - role: endpoints

        # Default to scraping over https. If required, just disable this or change to
        # `http`.
        scheme: https

        # This TLS & bearer token file config is used to connect to the actual scrape
        # endpoints for cluster components. This is separate to discovery auth
        # configuration because discovery & scraping are two separate concerns in
        # Prometheus. The discovery auth config is automatic if Prometheus runs inside
        # the cluster. Otherwise, more config options have to be provided within the
        # <kubernetes_sd_config>.
        tls_config:
          ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
          # If your node certificates are self-signed or use a different CA to the
          # master CA, then disable certificate verification below. Note that
          # certificate verification is an integral part of a secure infrastructure
          # so this should only be disabled in a controlled environment. You can
          # disable certificate verification by uncommenting the line below.
          #
          # insecure_skip_verify: true
        bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token

        # Keep only the default/kubernetes service endpoints for the https port. This
        # will add targets for each API server which Kubernetes adds an endpoint to
        # the default/kubernetes service.
        relabel_configs:
        - source_labels: [__meta_kubernetes_namespace, __meta_kubernetes_service_name, __meta_kubernetes_endpoint_port_name]
          action: keep
          regex: default;kubernetes;https

      - job_name: 'kubernetes-nodes'

        # Default to scraping over https. If required, just disable this or change to
        # `http`.
        scheme: https

        # This TLS & bearer token file config is used to connect to the actual scrape
        # endpoints for cluster components. This is separate to discovery auth
        # configuration because discovery & scraping are two separate concerns in
        # Prometheus. The discovery auth config is automatic if Prometheus runs inside
        # the cluster. Otherwise, more config options have to be provided within the
        # <kubernetes_sd_config>.
        tls_config:
          ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
          # If your node certificates are self-signed or use a different CA to the
          # master CA, then disable certificate verification below. Note that
          # certificate verification is an integral part of a secure infrastructure
          # so this should only be disabled in a controlled environment. You can
          # disable certificate verification by uncommenting the line below.
          #
          # insecure_skip_verify: true
        bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token

        kubernetes_sd_configs:
        - role: node

        relabel_configs:
        - action: labelmap
          regex: __meta_kubernetes_node_label_(.+)

      # Scrape config for service endpoints.
      #
      # The relabeling allows the actual service scrape endpoint to be configured
      # via the following annotations:
      #
      # * `prometheus.io/scrape`: Only scrape services that have a value of `true`
      # * `prometheus.io/scheme`: If the metrics endpoint is secured then you will need
      # to set this to `https` & most likely set the `tls_config` of the scrape config.
      # * `prometheus.io/path`: If the metrics path is not `/metrics` override this.
      # * `prometheus.io/port`: If the metrics are exposed on a different port to the
      # service then set this appropriately.
      - job_name: 'kubernetes-service-endpoints'

        tls_config:
          ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
          # TODO: this should be per target
          insecure_skip_verify: true

        kubernetes_sd_configs:
        - role: endpoints

        relabel_configs:
        - source_labels: [__meta_kubernetes_service_annotation_prometheus_io_scrape]
          action: keep
          regex: true
        - source_labels: [__meta_kubernetes_service_annotation_prometheus_io_scheme]
          action: replace
          target_label: __scheme__
          regex: (https?)
        - source_labels: [__meta_kubernetes_service_annotation_prometheus_io_path]
          action: replace
          target_label: __metrics_path__
          regex: (.+)
        - source_labels: [__address__, __meta_kubernetes_service_annotation_prometheus_io_port]
          action: replace
          target_label: __address__
          regex: (.+)(?::\d+);(\d+)
          replacement: $1:$2
        - source_labels: [__meta_kubernetes_service_annotation_prometheus_io_username]
          action: replace
          target_label: __basic_auth_username__
          regex: (.+)
        - source_labels: [__meta_kubernetes_service_annotation_prometheus_io_password]
          action: replace
          target_label: __basic_auth_password__
          regex: (.+)
        - action: labelmap
          regex: __meta_kubernetes_service_label_(.+)
        - source_labels: [__meta_kubernetes_namespace]
          action: replace
          target_label: kubernetes_namespace
        - source_labels: [__meta_kubernetes_service_name]
          action: replace
          target_label: kubernetes_name