prometheus-app-sre.yaml

apiVersion: monitoring.coreos.com/v1
kind: Prometheus
metadata:
  name: app-sre
  # ToDo eliminate the namespace field, doesn't work well with saasherder.
  namespace: app-sre-prometheus
spec:
  # Additional scrape config, for external services
  # Requires a secret with referenced name to be present
  additionalScrapeConfigs:
    name: prometheus-app-sre-additional-scrapeconfig
    key: prometheus-app-sre-additional.yaml
  # List of alertmanagers to fire the alerts to
  alerting:
    alertmanagers:
    - name: alertmanager-operated
      namespace: app-sre-prometheus
      port: web
      scheme: http
  baseImage: quay.io/prometheus/prometheus
  externalLabels:
    cluster: app-sre
  
  # # ToDo get a sane URL
  # externalUrl: http://prometheus-app-sre-app-sre-prometheus.1061.app-sre.openshiftapps.com
  replicas: 3
  retention: 15d
  securityContext: {}

  # The Serviceaccount to use for prometheus stuff
  # This SA must have view access on the project you want
  # prometheus to monitor
  serviceAccountName: prometheus-k8s

  # Once you've added the project name above, make sure your
  # ServiceMonitors are labelled with the one specified below
  serviceMonitorSelector:
    matchLabels:
      prometheus: app-sre
  
  # Similar selector to select prometheus alert rules.
  ruleSelector:
    matchLabels:
      prometheus: app-sre
  
  # Add persistent storage to the prometheus pods.
  # Since its a statefulset, n*replicas PV's will be created
  storage:
    volumeClaimTemplate:
      apiVersion: v1
      kind: PersistentVolumeClaim
      spec:
        accessModes:
        - ReadWriteOnce
        resources:
          requests:
            storage: 50Gi
        storageClassName: gp2-encrypted

# Addons-ToDo
  # # Do not schedule the pods on the same nodes
  # # This works better for upgrades
  # affinity:
  #   podAntiAffinity:
  #     preferredDuringSchedulingIgnoredDuringExecution:
  #     - podAffinityTerm:
  #         labelSelector:
  #           matchNames:
  #           - key: prometheus
  #             operator: In
  #             values:
  #             - app-sre
  #         # ToDo template the namespace below, to work across other environments
  #         namespaces:
  #         - app-sre-prometheus
  #         topologyKey: kubernetes.io/hostname
  #       weight: 100  
  # # Namespaces to find servicemonitors in. 
  # # If you have a new project, add the project name here.
  # serviceMonitorNamespaceSelector:
  #   matchNames:
  #   - app-sre-prometheus
  #   - telemeter-production
  #   - vault-stage
  #   - app-sre-exporters
  
  # # Namespaces in which to find PrometheusRule objects
  # # In most cases you want this to have the same values as serviceMonitorNamespaceSelector
  # ruleNamespaceSelector:
  #   matchNames:
  #   - app-sre-prometheus
  #   - telemeter-production
  #   - vault-stage
  #   - app-sre-exporters