# Copyright 2020 Aditya Srivastava.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

apiVersion: apps/v1
kind: Deployment
metadata:
  name: prometheus-deployment
  namespace: monitoring
  labels:
    app: prometheus
    adi10hero.monitoring: prometheus
spec:
  replicas: 1
  selector:
    matchLabels:
      adi10hero.monitoring: prometheus
      app: prometheus
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        adi10hero.monitoring: prometheus
        app: prometheus
    spec:
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: kubernetes.io/hostname
                operator: In
                values:
                - vm2
      containers:
      - name: prometheus
        image: prom/prometheus
        args:
        - --config.file=/etc/prometheus/prometheus.yml
        - --storage.tsdb.path=/prometheus
        - --storage.tsdb.retention.size=3GB
        - --storage.tsdb.retention.time=30d
        - --web.console.libraries=/etc/prometheus/console_libraries
        - --web.console.templates=/etc/prometheus/consoles
        ports:
        - containerPort: 9090
        securityContext:
          runAsUser: 0
        volumeMounts:
        - name: prometheus-config-volume
          mountPath: /etc/prometheus/
        - name: prometheus-storage-volume
          mountPath: /prometheus/
      restartPolicy: Always
      volumes:
      - name: prometheus-config-volume
        configMap:
          defaultMode: 420
          name: prometheus-config
      - name: prometheus-storage-volume
        persistentVolumeClaim:
          claimName: prometheus-pvc