poimen-workflows/k8s/temporal/01-postgres-statefulset.yaml

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: temporal-postgres-pvc
  namespace: temporal
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: temporal-postgres-init
  namespace: temporal
data:
  init.sql: |
    CREATE DATABASE temporal;
    CREATE DATABASE temporal_visibility;
    GRANT ALL PRIVILEGES ON DATABASE temporal TO postgres;
    GRANT ALL PRIVILEGES ON DATABASE temporal_visibility TO postgres;

---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: temporal-postgres
  namespace: temporal
  labels:
    app: temporal-postgres
spec:
  serviceName: temporal-postgres
  replicas: 1
  selector:
    matchLabels:
      app: temporal-postgres
  template:
    metadata:
      labels:
        app: temporal-postgres
    spec:
      containers:
      - name: postgres
        image: postgres:15-alpine
        ports:
        - name: db
          containerPort: 5432
          protocol: TCP
        env:
        - name: POSTGRES_PASSWORD
          valueFrom:
            secretKeyRef:
              name: temporal-postgres-secret
              key: password
        - name: PGDATA
          value: /var/lib/postgresql/data/pgdata
        volumeMounts:
        - name: postgres-storage
          mountPath: /var/lib/postgresql/data
        - name: init-scripts
          mountPath: /docker-entrypoint-initdb.d
        resources:
          requests:
            cpu: 250m
            memory: 512Mi
          limits:
            cpu: 500m
            memory: 1Gi
        livenessProbe:
          exec:
            command:
            - /bin/sh
            - -c
            - pg_isready -U postgres
          initialDelaySeconds: 30
          periodSeconds: 10
        readinessProbe:
          exec:
            command:
            - /bin/sh
            - -c
            - pg_isready -U postgres
          initialDelaySeconds: 5
          periodSeconds: 10
      volumes:
      - name: init-scripts
        configMap:
          name: temporal-postgres-init
  volumeClaimTemplates:
  - metadata:
      name: postgres-storage
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: 10Gi

---
apiVersion: v1
kind: Service
metadata:
  name: temporal-postgres
  namespace: temporal
  labels:
    app: temporal-postgres
spec:
  type: ClusterIP
  clusterIP: None  # Headless service for StatefulSet
  ports:
  - port: 5432
    targetPort: 5432
    protocol: TCP
    name: db
  selector:
    app: temporal-postgres

---
apiVersion: v1
kind: Secret
metadata:
  name: temporal-postgres-secret
  namespace: temporal
type: Opaque
stringData:
  password: "temporal-password-changeme"