Template for postgres exporter resource

postgres_exporter_template.yaml

apiVersion: v1
kind: Template
metadata:
  name: example-postgresql-exporter3
objects:
  - apiVersion: apps.openshift.io/v1
    kind: DeploymentConfig
    metadata:
      labels:
        app: postgres
      name: example-postgres-exporter
    spec:
      replicas: 1
      revisionHistoryLimit: 10
      selector:
        app: postgres
      strategy:
        activeDeadlineSeconds: 21600
        resources: {}
        rollingParams:
          intervalSeconds: 1
          maxSurge: 25%
          maxUnavailable: 25%
          timeoutSeconds: 600
          updatePeriodSeconds: 1
        type: Rolling
      template:
        metadata:
          creationTimestamp: null
          annotations:
            prometheus.io/scrape: "true"
            prometheus.io/port: ${METRICS_PORT}
          labels:
            app: postgres
        spec:
          containers:
            - image: ${DOCKER_IMAGE}
              env:
                - name: DATA_SOURCE_NAME
                  value: postgresql://${USERNAME}:${PASSWORD}@${HOST_NAME}:${POSTGRES_PORT}/${DATABASE}
              resources:
              requests:
                cpu: 100m
                memory: 100Mi
              imagePullPolicy: Always
              name: example-postgres-exporter
              ports:
                - containerPort: ${{METRICS_PORT}}
                  name: metrics
                  protocol: TCP
          dnsPolicy: ClusterFirst
          restartPolicy: Always
          schedulerName: default-scheduler
          securityContext: {}
          terminationGracePeriodSeconds: 30
      test: false
      triggers:
        - type: ConfigChange
  - apiVersion: v1
    kind: Service
    metadata:
      labels:
        app: postgres
      name: example-postgres-exporter
    spec:
      ports:
        - name: metrics
          port: ${{METRICS_PORT}}
          protocol: TCP
          targetPort: ${{METRICS_PORT}}
      selector:
        app: postgres
      sessionAffinity: None
      type: ClusterIP
  - apiVersion: monitoring.coreos.com/v1
    kind: ServiceMonitor
    metadata:
      labels:
        monitoring-key: 'middleware'
      name:  example-postgres-exporter
    spec:
      endpoints:
        - path: /metrics
          port: metrics
      selector:
        matchLabels:
          app: postgres
parameters:
  - name: USERNAME
    displayName: Username
    value: 'postgres'
    required: true
  - name: PASSWORD
    displayName: Password
    value: 'Password1'
    required: true
  - name: HOST_NAME
    displayName: Hostname
    value: 'localhost'
    required: true
  - name: METRICS_PORT
    displayName: Metrics Port
    value: "9187"
    required: true
  - name: POSTGRES_PORT
    displayName: Postgres Port
    value: "5432"
    required: true
  - name: DOCKER_IMAGE
    displayName: Exporter image
    value: 'wrouesnel/postgres_exporter:latest'
    required: true
  - name: DATABASE
    displayName: database
    value: "postgres"
    required: true