Add postgresql deployment

test/nextcloud/2.3.2/templates/_helpers.tpl

@@ -62,6 +62,22 @@ Retrieve host path defined in volume
 {{- end -}}
 {{- end -}}
 
+{{/*
+Retrieve backup postgresql host path defined in volume
+*/}}
+{{- define "configuredBackupPostgresHostPath" -}}
+{{- $backupVolDict := first .Values.postgresql.backupVolume -}}
+{{- $backupVolDict.hostPath -}}
+{{- end -}}
+
+{{/*
+Retrieve postgresql data host path defined in volume
+*/}}
+{{- define "configuredPostgresHostPath" -}}
+{{- $dataVolDict := first .Values.postgresql.dataVolume -}}
+{{- $dataVolDict.hostPath -}}
+{{- end -}}
+
 {{/*
 Selector labels
 */}}

test/nextcloud/2.3.2/templates/postgres-deployment.yaml

@@ -0,0 +1,51 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ template "nextcloud.fullname" . }}-postgres
+  labels:
+    helm.sh/chart: {{ include "nextcloud.chart" . }}
+    {{- include "nextcloud.postgres.selectorLabels" . | nindent 4 }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/component: database
+spec:
+  replicas: 1
+  strategy:
+    type: {{ .Values.nextcloud.strategy }}
+  selector:
+    matchLabels:
+      {{- include "nextcloud.postgres.selectorLabels" . | nindent 6 }}
+      app.kubernetes.io/component: database
+  template:
+    metadata:
+      labels:
+        {{- include "nextcloud.postgres.selectorLabels" . | nindent 8 }}
+        app.kubernetes.io/component: database
+      annotations:
+        rollme: {{ randAlphaNum 5 | quote }}
+    spec:
+      containers:
+      - name: {{ .Chart.Name }}-postgres
+        image: "postgres:13.1"
+        imagePullPolicy: {{ .Values.image.pullPolicy }}
+        env:
+        - name: POSTGRES_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: db-details
+              key: db-password
+        volumeMounts:
+          - name: postgres-data
+            mountPath: /var/lib/postgresql/data
+          - name: postgres-backup
+            mountPath: /postgres_backups
+        ports:
+        - name: postgres-tcp
+          containerPort: 5432
+          protocol: TCP
+      volumes:
+      - name: postgres-data
+        hostPath:
+          path: {{ template "configuredPostgresHostPath" . }}
+      - name: postgres-backup
+        hostPath:
+          path: {{ template "configuredBackupPostgresHostPath" . }}

test/nextcloud/2.3.2/templates/postgres-secret.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: db-details
+data:
+  {{- if .Release.IsInstall }}
+  db-password: {{ randAlphaNum 15 | b64enc | quote }}
+  {{ else }}
+  # `index` function is necessary because the property name contains a dash.
+  # Otherwise (...).data.db_password would have worked too.
+  db-password:  {{ index (lookup "v1" "Secret" .Release.Namespace "db-details").data "db-password" }}
+  {{ end }}