helm: remove mount of configmap, read entirely from env

helm/templates/configmap.yaml

@@ -3,24 +3,17 @@ kind: ConfigMap
 metadata:
   name: {{ include "passbook.fullname" . }}-config
 data:
-  config.yml: |
-    postgresql:
-      host: "{{ .Release.Name }}-postgresql"
-      name: "{{ .Values.postgresql.postgresqlDatabase }}"
-      user: postgres
+  POSTGRESQL__HOST: "{{ .Release.Name }}-postgresql"
+  POSTGRESQL__NAME: "{{ .Values.postgresql.postgresqlDatabase }}"
+  POSTGRESQL__USER: "{{ .Values.postgresql.postgresqlUsername }}"
   {{- if .Values.backup }}
-      backup:
-        access_key: "{{ .Values.backup.access_key }}"
-        secret_key: "{{ .Values.backup.secret_key }}"
-        bucket: "{{ .Values.backup.bucket }}"
-        host: "{{ .Values.backup.host }}"
+  POSTGRESQL__BACKUP__ACCESS_KEY: "{{ .Values.backup.access_key }}"
+  POSTGRESQL__BACKUP__SECRET_KEY: "{{ .Values.backup.secret_key }}"
+  POSTGRESQL__BACKUP__BUCKET: "{{ .Values.backup.bucket }}"
+  POSTGRESQL__BACKUP__HOST: "{{ .Values.backup.host }}"
   {{- end}}
-    redis:
-      host: "{{ .Release.Name }}-redis-master"
-      cache_db: 0
-      message_queue_db: 1
-    error_reporting:
-      enabled: {{ .Values.config.error_reporting.enabled }}
-      environment: {{ .Values.config.error_reporting.environment }}
-      send_pii: {{ .Values.config.error_reporting.send_pii }}
-    log_level: "{{ .Values.config.log_level }}"
+  REDIS__HOST: "{{ .Release.Name }}-redis-master"
+  ERROR_REPORTING__ENABLED: "{{ .Values.config.error_reporting.enabled }}"
+  ERROR_REPORTING__ENVIRONMENT: "{{ .Values.config.error_reporting.environment }}"
+  ERROR_REPORTING__SEND_PII: "{{ .Values.config.error_reporting.send_pii }}"
+  LOG_LEVEL: "{{ .Values.config.log_level }}"

helm/templates/web-deployment.yaml

@@ -22,10 +22,6 @@ spec:
         app.kubernetes.io/instance: {{ .Release.Name }}
         k8s.passbook.io/component: web
     spec:
-      volumes:
-        - name: config-volume
-          configMap:
-            name: {{ include "passbook.fullname" . }}-config
       initContainers:
         - name: passbook-database-migrations
           image: "beryju/passbook:{{ .Values.image.tag }}"
@@ -33,9 +29,6 @@ spec:
           args:
             - ./manage.py
             - migrate
-          volumeMounts:
-            - mountPath: /etc/passbook
-              name: config-volume
           envFrom:
             - configMapRef:
                 name: {{ include "passbook.fullname" . }}-config
@@ -63,9 +56,6 @@ spec:
           args:
             - uwsgi
             - uwsgi.ini
-          volumeMounts:
-            - mountPath: /etc/passbook
-              name: config-volume
           envFrom:
             - configMapRef:
                 name: {{ include "passbook.fullname" . }}-config
@@ -74,18 +64,18 @@ spec:
             - name: PASSBOOK_SECRET_KEY
               valueFrom:
                 secretKeyRef:
-                  name: {{ include "passbook.fullname" . }}-secret-key
-                  key: secret_key
+                  name: "{{ include "passbook.fullname" . }}-secret-key"
+                  key: "secret_key"
             - name: PASSBOOK_REDIS__PASSWORD
               valueFrom:
                 secretKeyRef:
                   name: "{{ .Release.Name }}-redis"
-                  key: redis-password
+                  key: "redis-password"
             - name: PASSBOOK_POSTGRESQL__PASSWORD
               valueFrom:
                 secretKeyRef:
                   name: "{{ .Release.Name }}-postgresql"
-                  key: postgresql-password
+                  key: "postgresql-password"
           ports:
             - name: http
               containerPort: 8000

helm/templates/worker-deployment.yaml

@@ -22,10 +22,6 @@ spec:
         app.kubernetes.io/instance: {{ .Release.Name }}
         k8s.passbook.io/component: worker
     spec:
-      volumes:
-        - name: config-volume
-          configMap:
-            name: {{ include "passbook.fullname" . }}-config
       containers:
         - name: {{ .Chart.Name }}
           image: "beryju/passbook:{{ .Values.image.tag }}"
@@ -38,29 +34,26 @@ spec:
             - -B
             - -A=passbook.root.celery
             - -s=/tmp/celerybeat-schedule
-          volumeMounts:
-            - mountPath: /etc/passbook
-              name: config-volume
           envFrom:
             - configMapRef:
-                name: {{ include "passbook.fullname" . }}-config
-              prefix: PASSBOOK_
+                name: "{{ include "passbook.fullname" . }}-config"
+              prefix: "PASSBOOK_"
           env:
             - name: PASSBOOK_SECRET_KEY
               valueFrom:
                 secretKeyRef:
-                  name: {{ include "passbook.fullname" . }}-secret-key
+                  name: "{{ include "passbook.fullname" . }}-secret-key"
                   key: secret_key
             - name: PASSBOOK_REDIS__PASSWORD
               valueFrom:
                 secretKeyRef:
                   name: "{{ .Release.Name }}-redis"
-                  key: redis-password
+                  key: "redis-password"
             - name: PASSBOOK_POSTGRESQL__PASSWORD
               valueFrom:
                 secretKeyRef:
                   name: "{{ .Release.Name }}-postgresql"
-                  key: postgresql-password
+                  key: "postgresql-password"
           resources:
             requests:
               cpu: 150m