added Kubernetes support

kubernetes/plausible-db.yaml

@@ -0,0 +1,109 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: plausible-db
+  labels:
+    app.kubernetes.io/name: postgres
+    app.kubernetes.io/component: database
+    app.kubernetes.io/part-of: plausible
+spec:
+  type: ClusterIP
+  ports:
+    - name: db
+      port: 5432
+      targetPort: 5432
+      protocol: TCP
+  selector:
+    app.kubernetes.io/name: postgres
+    app.kubernetes.io/component: database
+    app.kubernetes.io/part-of: plausible
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: plausible-db-pvc
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 5Gi
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: plausible-db
+  labels:
+    app.kubernetes.io/name: postgres
+    app.kubernetes.io/component: database
+    app.kubernetes.io/part-of: plausible
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: postgres
+      app.kubernetes.io/component: database
+      app.kubernetes.io/part-of: plausible
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: postgres
+        app.kubernetes.io/component: database
+        app.kubernetes.io/part-of: plausible
+    spec:
+      restartPolicy: Always
+      volumes:
+        - name: pgdata
+          persistentVolumeClaim:
+            claimName: plausible-db-pvc
+      containers:
+        - name: plausible-db
+          image: postgres:latest
+          imagePullPolicy: Always
+          ports:
+            - containerPort: 5432
+          volumeMounts:
+            - name: pgdata
+              mountPath: /var/lib/postgresql/data
+          env:
+            - name: POSTGRES_DB
+              value: plausible
+            - name: PGDATA
+              value: /var/lib/postgresql/data/pgdata
+            - name: POSTGRES_USER
+              valueFrom:
+                secretKeyRef:
+                  name: plausible-db-user
+                  key: username
+            - name: POSTGRES_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: plausible-db-user
+                  key: password
+          securityContext:
+            allowPrivilegeEscalation: false
+          resources:
+            limits:
+              memory: 2Gi
+              cpu: 1500m
+            requests:
+              memory: 128Mi
+              cpu: 250m
+          readinessProbe:
+            exec:
+              command:
+                - /bin/sh
+                - -c
+                - pg_isready -U postgres
+            initialDelaySeconds: 20
+            failureThreshold: 6
+            periodSeconds: 10
+          livenessProbe:
+            exec:
+              command:
+                - /bin/sh
+                - -c
+                - pg_isready -U postgres
+            initialDelaySeconds: 30
+            failureThreshold: 3
+            periodSeconds: 10