Updated configmap to use tpl to substitute values in config files.

The bookkeeper.yml file can now get values from values.yaml which
are substituted using the template syntax.  Still need to figure out how
to pass in the secret that way.

Also committed the postgres.yaml config that I forgot last time.

This continues work on issue #66.

helm/Chart.yaml

@@ -15,7 +15,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.0.2
+version: 0.0.3
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to

helm/config/bookkeeper.yml

@@ -30,8 +30,8 @@ database:
   # url: jdbc:postgresql://postgres.bookkeeper.svc.cluster.local:5432/bookkeeper
 
   # Connect with database username and password
-  user: <user goes here>
-  password: <password goes here>
+  user: {{ .Values.postgres.user }}
+  password: <password goes here> # This is in a Secret, so can't get it from .Values.
 
   # JDBC driver properties
   properties:

helm/templates/configmap.yaml

@@ -18,4 +18,4 @@ metadata:
   labels:
     {{- include "bookkeeper.labels" . | nindent 4 }}
 data:
-{{ (.Files.Glob "config/*").AsConfig | indent 4 }}
+{{ (tpl (.Files.Glob "config/*").AsConfig . ) | indent 4 }}

helm/templates/postgres.yaml

@@ -0,0 +1,66 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: postgres
+  labels:
+    {{- include "bookkeeper.labels" . | nindent 4 }}
+spec:
+  selector:
+    matchLabels:
+      app: postgres
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: postgres
+    spec:
+      containers:
+      - name: postgres
+        image: docker.io/postgres:11-alpine
+        command: [ "su", "-", "postgres", "-c", "postgres -D /opt/local/bookkeeper/postgresql/data" ]
+        ports:
+        - name: postgres
+          containerPort: 5432
+        imagePullPolicy: IfNotPresent
+        volumeMounts:
+        - name: bookkeeper-volume
+          mountPath: "/opt/local"
+          readOnly: false
+        env:
+        - name: POSTGRES_HOST
+          valueFrom:
+            configMapKeyRef:
+              name: {{ .Release.Name }}-configmap
+              key: POSTGRES_HOST
+        - name: POSTGRES_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: postgres-credentials
+              key: password
+        - name: POSTGRES_USER
+          valueFrom:
+            configMapKeyRef:
+              name: {{ .Release.Name }}-configmap
+              key: POSTGRES_USER
+      restartPolicy: Always
+      volumes:
+      - name: bookkeeper-volume
+        persistentVolumeClaim:
+          claimName: bookkeeper-pvc
+
+---
+
+apiVersion: v1
+kind: Service
+metadata:
+  name: postgres
+  labels:
+    {{- include "bookkeeper.labels" . | nindent 4 }}
+spec:
+  selector:
+    app: postgres
+  ports:
+  - name: postgres
+    port: 5432
+    protocol: TCP
+    targetPort: postgres