deploy/platform/kubernetes/templates/feature-event/scaler.yaml

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you 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.
#
{{- if .Values.features.event.enabled }}

---
# @feature: event; a cron job to mimic the restart of Pods
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: event-role
  namespace: {{ .Values.sampleServices.namespace }}
rules:
  - apiGroups:
      - ""
      - extensions
      - apps
    resources:
      - "*"
    verbs:
      - "*"

---
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: event-role-binding
  namespace: {{ .Values.sampleServices.namespace }}
subjects:
  - kind: ServiceAccount
    name: event-scaler-sa
roleRef:
  kind: Role
  name: event-role
  apiGroup: ""

---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: event-scaler-sa
  namespace: {{ .Values.sampleServices.namespace }}

---
{{- if .Values.sampleServices.scaller.enabled }}
apiVersion: batch/v1
kind: CronJob
metadata:
  name: event-scale-up
  namespace: {{ .Values.sampleServices.namespace }}
spec:
  schedule: "0 * * * *"
  successfulJobsHistoryLimit: 1
  failedJobsHistoryLimit: 1
  jobTemplate:
    spec:
      template:
        metadata:
          annotations:
            sidecar.istio.io/inject: "false"
        spec:
          serviceAccountName: event-scaler-sa
          containers:
            - name: event-scaler
              image: bitnami/kubectl:1.20.12
              command:
                - sh
                - -c
                - kubectl -n {{ .Values.sampleServices.namespace }} scale deployment songs-deployment gateway-deployment app-deployment --replicas=2
          restartPolicy: Never

---
apiVersion: batch/v1
kind: CronJob
metadata:
  name: event-scale-down
  namespace: {{ .Values.sampleServices.namespace }}
spec:
  schedule: "30 * * * *"
  successfulJobsHistoryLimit: 1
  failedJobsHistoryLimit: 1
  jobTemplate:
    spec:
      template:
        metadata:
          annotations:
            sidecar.istio.io/inject: "false"
        spec:
          serviceAccountName: event-scaler-sa
          containers:
            - name: event-scaler
              image: bitnami/kubectl:1.20.12
              command:
                - sh
                - -c
                - kubectl -n {{ .Values.sampleServices.namespace }} scale deployment songs-deployment gateway-deployment app-deployment --replicas=1
          restartPolicy: Never
{{- end }}
{{- end }}