Add Helm chart for the expense tracker (app, Postgres, ingress, backups)

- Deployment/Service for the app, StatefulSet/Service for Postgres 17 - Secrets (DB password, session secret, Google client, allowed e-mails) via ExternalSecret from OpenBao - Ingress with a Let's Encrypt certificate, NetworkPolicy for Postgres - Nightly pg_dump CronJob - Optional OpenBao OIDC provider setup script Co-Authored-By: Claude Sonnet 5 <[email protected]>
2026-09-20 18:46:19 +02:00
commit 2ee46ceb4a
13 changed files with 881 additions and 0 deletions
@@ -0,0 +1,153 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: expense-tracker
+  namespace: {{ .Values.namespace.name }}
+  labels:
+    app.kubernetes.io/name: expense-tracker
+    {{- include "expense-tracker.labels" . | nindent 4 }}
+  annotations:
+    # Stakater Reloader: rolling restart when ESO refreshes a secret from OpenBao
+    # (env vars are only read at container start). Harmless if Reloader is not installed.
+    secret.reloader.stakater.com/reload: "expense-tracker-app,expense-tracker-db"
+spec:
+  replicas: {{ .Values.app.replicas }}
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: expense-tracker
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: expense-tracker
+    spec:
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 1000
+        runAsGroup: 1000
+        seccompProfile:
+          type: RuntimeDefault
+      containers:
+        - name: app
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - name: http
+              containerPort: 5174
+          env:
+            - name: PORT
+              value: "5174"
+            - name: PUBLIC_URL
+              value: {{ .Values.app.publicUrl | quote }}
+            {{- include "expense-tracker.pgenv" . | nindent 12 }}
+            - name: SESSION_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: expense-tracker-app
+                  key: SESSION_SECRET
+            - name: ALLOWED_EMAILS
+              valueFrom:
+                secretKeyRef:
+                  name: expense-tracker-app
+                  key: ALLOWED_EMAILS
+            {{- if .Values.auth.google.enabled }}
+            - name: GOOGLE_CLIENT_ID
+              valueFrom:
+                secretKeyRef:
+                  name: expense-tracker-app
+                  key: GOOGLE_CLIENT_ID
+            - name: GOOGLE_CLIENT_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: expense-tracker-app
+                  key: GOOGLE_CLIENT_SECRET
+            {{- end }}
+            {{- if .Values.auth.openbao.enabled }}
+            - name: OPENBAO_ISSUER
+              value: {{ .Values.auth.openbao.issuer | quote }}
+            - name: OPENBAO_CLIENT_ID
+              valueFrom:
+                secretKeyRef:
+                  name: expense-tracker-app
+                  key: OPENBAO_CLIENT_ID
+            - name: OPENBAO_CLIENT_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: expense-tracker-app
+                  key: OPENBAO_CLIENT_SECRET
+            # OpenBao's certificate is self-signed (cert-manager), so trust its CA.
+            - name: NODE_EXTRA_CA_CERTS
+              value: /etc/openbao-ca/openbao-ca.crt
+            {{- end }}
+          # The server starts listening only after Postgres answered and migrations ran.
+          startupProbe:
+            httpGet:
+              path: /livez
+              port: http
+            periodSeconds: 3
+            failureThreshold: 40
+          readinessProbe:
+            httpGet:
+              path: /healthz
+              port: http
+            periodSeconds: 10
+            timeoutSeconds: 3
+          livenessProbe:
+            httpGet:
+              path: /livez
+              port: http
+            periodSeconds: 20
+            timeoutSeconds: 3
+          securityContext:
+            allowPrivilegeEscalation: false
+            readOnlyRootFilesystem: true
+            capabilities:
+              drop: ["ALL"]
+          resources:
+            {{- toYaml .Values.app.resources | nindent 12 }}
+          volumeMounts:
+            - name: tmp
+              mountPath: /tmp
+            {{- if .Values.auth.openbao.enabled }}
+            - name: openbao-ca
+              mountPath: /etc/openbao-ca
+              readOnly: true
+            {{- end }}
+      volumes:
+        - name: tmp
+          emptyDir: {}
+        {{- if .Values.auth.openbao.enabled }}
+        - name: openbao-ca
+          secret:
+            secretName: expense-tracker-app
+            items:
+              - key: openbao-ca.crt
+                path: openbao-ca.crt
+        {{- end }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: expense-tracker
+  namespace: {{ .Values.namespace.name }}
+  labels:
+    app.kubernetes.io/name: expense-tracker
+    {{- include "expense-tracker.labels" . | nindent 4 }}
+spec:
+  selector:
+    app.kubernetes.io/name: expense-tracker
+  ports:
+    - name: http
+      port: 80
+      targetPort: http