feat: Add PostgreSQL deployment, service, configmap, persistent volume, and persistent volume claim

cluster/postgresql/pg-secret.yaml

@@ -0,0 +1,9 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: pg-secret
+  namespace: postgresql
+data:
+  # base64 encoded prism-ip:prism-port:admin:password.
+  # ex:echo -n "10.0.00.000:9440:admin:mypass" | base64
+  key: MTAuNDcuMjQuNjg6OTQ0MDptYWhlc2g6TnV0YW5peEAxMjM0

cluster/postgresql/ps-configmap.yaml

@@ -0,0 +1,10 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: postgres-config
+  labels:
+    app: postgres
+data:
+  POSTGRES_DB: postgresdb
+  POSTGRES_USER: admin
+  POSTGRES_PASSWORD: test123

cluster/postgresql/ps-deployment.yaml

@@ -0,0 +1,30 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: postgres
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: postgres
+  template:
+    metadata:
+      labels:
+        app: postgres
+    spec:
+      containers:
+        - name: postgres
+          image: postgres:10.1
+          imagePullPolicy: "IfNotPresent"
+          ports:
+            - containerPort: 5432
+          envFrom:
+            - configMapRef:
+                name: postgres-config
+          volumeMounts:
+            - mountPath: /var/lib/postgresql/data
+              name: postgredb
+      volumes:
+        - name: postgredb
+          persistentVolumeClaim:
+            claimName: postgres-pv-claim

cluster/postgresql/ps-service.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: postgres
+  labels:
+    app: postgres
+spec:
+  type: NodePort
+  ports:
+    - port: 5432
+  selector:
+    app: postgres

cluster/postgresql/ps-storage.yaml

@@ -0,0 +1,29 @@
+kind: PersistentVolume
+apiVersion: v1
+metadata:
+  name: postgres-pv-volume
+  labels:
+    type: local
+    app: postgres
+spec:
+  storageClassName: manual
+  capacity:
+    storage: 2Gi
+  accessModes:
+    - ReadWriteMany
+  hostPath:
+    path: "/mnt/data"
+---
+kind: PersistentVolumeClaim
+apiVersion: v1
+metadata:
+  name: postgres-pv-claim
+  labels:
+    app: postgres
+spec:
+  storageClassName: manual
+  accessModes:
+    - ReadWriteMany
+  resources:
+    requests:
+      storage: 2Gi

cluster/postgresql/psql-claim.yaml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: postgresql-pv-claim
+spec:
+  storageClassName: manual
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 2Gi

cluster/postgresql/psql-pv.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: postgresql-pv
+  labels:
+    type: local
+spec:
+  storageClassName: manual
+  capacity:
+    storage: 2Gi
+  accessModes:
+    - ReadWriteOnce
+  hostPath:
+    path: "/mnt/data"

cluster/postgresql/readme.md

@@ -0,0 +1,33 @@
+# postgresql
+
+```bash
+create ns postgresql-svc
+kubectl config set-context --current --namespace=postgresql-svc
+k apply -f ps-configmap.yaml
+k apply -f ps-storage.yaml
+k get pvc
+NAME                STATUS   VOLUME               CAPACITY   ACCESS MODES   STORAGECLASS   VOLUMEATTRIBUTESCLASS   AGE
+postgres-pv-claim   Bound    postgres-pv-volume   2Gi        RWX            manual         <unset>                 6s
+
+k apply -f ps-deployment.yaml
+k apply -f ps-service.yaml
+
+k get all
+NAME                            READY   STATUS    RESTARTS   AGE
+pod/postgres-84bd99bf45-sf6xq   1/1     Running   0          78s
+
+NAME               TYPE       CLUSTER-IP      EXTERNAL-IP   PORT(S)          AGE
+service/postgres   NodePort   10.43.158.173   <none>        5432:30795/TCP   12s
+
+NAME                       READY   UP-TO-DATE   AVAILABLE   AGE
+deployment.apps/postgres   1/1     1            1           78s
+
+NAME                                  DESIRED   CURRENT   READY   AGE
+replicaset.apps/postgres-84bd99bf45   1         1         1       78s
+
+kubectl exec -it [pod-name] --  psql -h localhost -U admin --password -p [port] postgresdb
+
+kubectl exec -it postgres-84bd99bf45-sf6xq --  psql -h localhost -U admin --password -p 5432 postgresdb
+
+helm repo add bitnami https://charts.bitnami.com/bitnami
+helm install postgresql bitnami/postgresql --create-namespace -n 'postgresql-svc' --set persistence.existingClaim=postgresql-pv-claim --set volumePermissions.enabled=true

swarm/postgres-data-persistentvolumeclaim.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  labels:
+    io.kompose.service: postgres-data
+  name: postgres-data
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 100Mi

swarm/postgres-db-deployment.yaml

@@ -0,0 +1,72 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  annotations:
+    kompose.cmd: kompose convert -f services.yml
+    kompose.version: 1.34.0 (HEAD)
+  labels:
+    io.kompose.service: postgres-db
+    traefik.constraint-label: traefik-public
+    traefik.docker.network: traefik-public
+    traefik.enable: "true"
+    traefik.tcp.routers.postgres.entrypoints: postgres-socket
+    traefik.tcp.routers.postgres.rule: HostSNI(`*`)
+    traefik.tcp.routers.postgres.service: postgres_service
+    traefik.tcp.services.postgres_service.loadbalancer.server.port: "5432"
+  name: postgres-db
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      io.kompose.service: postgres-db
+  strategy:
+    type: Recreate
+  template:
+    metadata:
+      annotations:
+        kompose.cmd: kompose convert -f services.yml
+        kompose.version: 1.34.0 (HEAD)
+      labels:
+        io.kompose.service: postgres-db
+    spec:
+      affinity:
+        nodeAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+            nodeSelectorTerms:
+              - matchExpressions:
+                  - key: postgres.postgres_data
+                    operator: In
+                    values:
+                      - "true"
+      containers:
+        - args:
+            - postgres
+            - -c
+            - log_connections=on
+          env:
+            - name: LANG
+              value: en_US.utf8
+            - name: PGDATA
+              value: /var/lib/postgresql/data
+            - name: POSTGRES_DB
+            - name: POSTGRES_PASSWORD
+            - name: POSTGRES_USER
+            - name: TZ
+              value: Asia/Singapore
+          image: postgres
+          livenessProbe:
+            exec:
+              command:
+                - pg_isready -d ${POSTGRES_DB} -U ${POSTGRES_USER}
+            failureThreshold: 10
+            periodSeconds: 30
+            timeoutSeconds: 10
+          name: postgres-db
+          volumeMounts:
+            - mountPath: /var/lib/postgresql/data
+              name: postgres-data
+      restartPolicy: Always
+      volumes:
+        - name: postgres-data
+          persistentVolumeClaim:
+            claimName: postgres-data