JS7 JobScheduler

Space shortcuts

Page tree

Versions Compared

Old Version 9

changes.mady.by.user Andreas Püschel

Saved on

compared with

New Version Current

changes.mady.by.user Andreas Püschel

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

  • JS7 can be set up from a Helm Chart. Using the Linux-based JS7 container images which ship with a current Alpine base image and OpenJDK.
  • Users deploy JS7 products by creating a Kubernetes deployment object from a deployment YAML file.
    • For this purpose, users have to first install and set up the Kubernetes Cluster see JS7 - How to install a Kubernetes Cluster.
    • With the Helm Chart being up and running users can use values YAML files to deploy JS7 componentsproducts.

Deployment Files

The YAML sample files for deployment to Kubernetes using Helm are attached to the article.

...

The archive includes the following files.

Deployment of JS7

...

Products: js7-deployment.yaml

Code Block
languageyml
titlejs7-deplotment.yaml
linenumberstrue
apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ include "buildachart.fullname" . }}
  labels:
    {{- include "buildachart.labels" . | nindent 4 }}
spec:
  {{- if not .Values.autoscaling.enabled }}
  replicas: {{ .Values.replicaCount }}
  {{- end }}
  selector:
    matchLabels:
      {{- include "buildachart.selectorLabels" . | nindent 6 }}
  template:
    metadata:
      {{- with .Values.podAnnotations }}
      annotations:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      labels:
        {{- include "buildachart.selectorLabels" . | nindent 8 }}
    spec:
      {{- with .Values.imagePullSecrets }}
      imagePullSecrets:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      serviceAccountName: {{ include "buildachart.serviceAccountName" . }}
      securityContext:
        {{- toYaml .Values.podSecurityContext | nindent 8 }}
      volumes:
        - name: hibernate-config
          configMap:
            name: hibernate-config
      containers:
        - name: {{ .Chart.Name }}
          securityContext:
            {{- toYaml .Values.securityContext | nindent 12 }}
          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
          imagePullPolicy: {{ .Values.image.pullPolicy }}
          ports:
            - name: http
              containerPort: {{ .Values.service.port }}
              protocol: TCP
          volumeMounts:
            - name: hibernate-config
              mountPath: /var/sos-berlin.com/js7/joc/resources/joc/
        - name: js7con
          image: "{{ .Values.imageController.repository }}:{{ .Values.imageController.tag | default .Chart.AppVersion }}"
          ports:
            - name: http
              containerPort: {{ .Values.serviceController.port }}
              protocol: TCP
        - name: js7ag
          image: "{{ .Values.imageAgent.repository }}:{{ .Values.imageAgent.tag | default .Chart.AppVersion }}"
          ports:
            - name: http
              containerPort: {{ .Values.serviceAgent.port }}
              protocol: TCP
          resources:
            {{- toYaml .Values.resources | nindent 12 }}
      {{- with .Values.nodeSelector }}
      nodeSelector:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      {{- with .Values.affinity }}
      affinity:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      {{- with .Values.tolerations }}
      tolerations:
        {{- toYaml . | nindent 8 }}
      {{- end }}

The YAML file describes a single Pod for deployment to Kubernetes which is a group of one or more containers and a ConfigMap. The Pod includes three containers:

  1. The js7joc container runs the joc-2-5-1 image and exposes port 4446. It uses a ConfigMap with the name hibernate-config to specify a volume mounted to the /var/sos-berlin.com/js7/joc/resources/joc directory.
  2. The js7con container runs the controller-2-5-1 image and exposes port 4444.
  3. The js7agent container runs the agent-2-5-1 image and exposes port 4445.

The following implications apply:

  • Each container runs a different image from the sosberlin/js7 repository and is assigned a unique port.

  • For the js7joc container the volumeMounts element specifies the hibernate-config ConfigMap which is mounted to the /var/sos-berlin.com/js7/joc/resources/joc directory.

...