Hawkbit: include an initContainer to intialize the database

This is optional in the docker compose version, but in
kubernetes, the addition of an init container make the startup more
stable by ensuring the databases are up and updated before running the
main hawkbit container.

Author: d4ddi0

charts/hawkbit/templates/deployment.yaml

@@ -25,6 +25,28 @@ spec:
         {{- toYaml . | nindent 8 }}
         {{- end }}
     spec:
+      initContainers:
+        - name: hawkbit-init
+          image: "{{ .Values.image.initContainer }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          env:
+            - name: HAWKBIT_DB_MODE
+              value: "migrate"
+            - name: "SPRING_DATASOURCE_URL"
+              {{- if and .Values.env .Values.env.springDatasourceUrl }}
+              value: "{{ .Values.env.springDatasourceUrl }}"
+              {{- else }}
+              value: "jdbc:mariadb://{{ .Release.Name }}-mysql:3306/{{ .Values.mysql.auth.database }}"
+              {{- end }}
+            - name: SPRING_DATASOURCE_USERNAME
+              value: "{{ .Values.mysql.auth.username }}"
+            - name: SPRING_DATASOURCE_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: {{ include "mysql.secretName" .Subcharts.mysql }}
+                  key: mysql-password
+            - name: AND_THEN
+              value: "true"
     {{- with .Values.image.pullSecrets }}
       imagePullSecrets:
         {{- toYaml . | nindent 8 }}
@@ -36,6 +58,8 @@ spec:
           env:
             - name: PROFILES
               value: "{{ .Values.spring.profiles }}"
+            - name: SPRING_FLYWAY_ENABLED
+              value: "false"
             - name: SPRING_DATASOURCE_USERNAME
               value: "{{ .Values.mysql.auth.username }}"
             - name: SPRING_DATASOURCE_PASSWORD

charts/hawkbit/values.yaml

@@ -17,6 +17,7 @@ image:
   repository: "hawkbit/hawkbit-update-server"
   tag: '0.9.0'
   pullPolicy: IfNotPresent
+  initContainer: "hawkbit/hawkbit-repository-jpa-init"
 
 # auth configuration
 auth: