added Kubernetes support

kubernetes/README.md

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+# Plausible Analytics in Kubernetes
+
+This guide is designed to extend the [normal self-hosting guide](https://plausible.io/docs/self-hosting), please refer to it before following this guide.
+
+## 1. Clone the hosting repo
+
+To deploy Plausible Analytics into Kubernetes first download the [plausible/hosting](https://github.com/plausible/hosting) repo.
+
+```bash
+git clone https://github.com/plausible/hosting
+cd hosting
+```
+
+## 2. Add required configuration
+
+Like the original self hosting guide configure your server in the `plausible-conf.env` file.
+
+## 3. Deploy the server
+
+Once you've entered your secret key base, base url and admin credentials, you're ready to deploy the server:
+
+```bash
+kubectl create namespace plausible # Create a new namespace for all resources
+kubectl -n plausible create configmap plausible-config --from-env-file=plausible-conf.env # Create a configmap from the plausible-conf.env file
+# Please change the Postgres and Clickhouse passwords to something more secure here!
+kubectl -n plausible create secret generic plausible-db-user --from-literal='username=postgres' --from-literal='password=postgres' # Create the Postgres user
+kubectl -n plausible create secret generic plausible-events-db-user --from-literal='username=clickhouse' --from-literal='password=clickhouse' # Create the Clickhouse user
+kubectl -n plausible apply -f ./kubernetes
+```
+
+You can now navigate to http://{hostname}:8000 and see the login screen.
+
+When you first log in with your admin credentials, you will be prompted to enter a verification code which has been sent to your email. Please configure your server for SMTP to receive this email. [Here are Plausible's SMTP configuration options](https://plausible.io/docs/self-hosting-configuration#mailersmtp-setup).
+Otherwise, run this command to verify all users in the database:
+
+```bash
+kubectl -n plausible exec deploy/plausible-db -- /bin/bash -c 'psql -U $POSTGRES_USER -d $POSTGRES_DB -c "UPDATE users SET email_verified = true;"'
+```

kubernetes/plausible-db.yaml

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+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

kubernetes/plausible-events-db.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: plausible-events-db
+  labels:
+    app.kubernetes.io/name: clickhouse
+    app.kubernetes.io/component: database
+    app.kubernetes.io/part-of: plausible
+spec:
+  type: ClusterIP
+  ports:
+    - name: db
+      port: 8123
+      targetPort: 8123
+      protocol: TCP
+  selector:
+    app.kubernetes.io/name: clickhouse
+    app.kubernetes.io/component: database
+    app.kubernetes.io/part-of: plausible
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: plausible-events-db-pvc
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 5Gi
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: plausible-events-db
+  labels:
+    app.kubernetes.io/name: clickhouse
+    app.kubernetes.io/component: database
+    app.kubernetes.io/part-of: plausible
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: clickhouse
+      app.kubernetes.io/component: database
+      app.kubernetes.io/part-of: plausible
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: clickhouse
+        app.kubernetes.io/component: database
+        app.kubernetes.io/part-of: plausible
+    spec:
+      restartPolicy: Always
+      volumes:
+        - name: clickhousedata
+          persistentVolumeClaim:
+            claimName: plausible-db-pvc
+      containers:
+        - name: plausible-events-db
+          image: yandex/clickhouse-server:latest
+          imagePullPolicy: Always
+          ports:
+            - containerPort: 8123
+          volumeMounts:
+            - name: clickhousedata
+              mountPath: /var/lib/clickhouse
+          env:
+            - name: CLICKHOUSE_DB
+              value: plausible
+            - name: CLICKHOUSE_USER
+              valueFrom:
+                secretKeyRef:
+                  name: plausible-events-db-user
+                  key: username
+            - name: CLICKHOUSE_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: plausible-events-db-user
+                  key: password
+          securityContext:
+            allowPrivilegeEscalation: false
+          resources:
+            limits:
+              memory: 2Gi
+              cpu: 1500m
+            requests:
+              memory: 200Mi
+              cpu: 250m
+          readinessProbe:
+            httpGet:
+              path: /ping
+              port: 8123
+            initialDelaySeconds: 20
+            failureThreshold: 6
+            periodSeconds: 10
+          livenessProbe:
+            httpGet:
+              path: /ping
+              port: 8123
+            initialDelaySeconds: 30
+            failureThreshold: 3
+            periodSeconds: 10

kubernetes/plausible-mail.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: plausible-smtp
+  labels:
+    app.kubernetes.io/name: smtp
+    app.kubernetes.io/component: email
+    app.kubernetes.io/part-of: plausible
+spec:
+  type: ClusterIP
+  ports:
+    - name: smtp
+      port: 25
+      targetPort: 25
+      protocol: TCP
+  selector:
+    app.kubernetes.io/name: smtp
+    app.kubernetes.io/component: database
+    app.kubernetes.io/part-of: plausible
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: plausible-smtp
+  labels:
+    app.kubernetes.io/name: smtp
+    app.kubernetes.io/component: email
+    app.kubernetes.io/part-of: plausible
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: smtp
+      app.kubernetes.io/component: email
+      app.kubernetes.io/part-of: plausible
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: smtp
+        app.kubernetes.io/component: email
+        app.kubernetes.io/part-of: plausible
+    spec:
+      restartPolicy: Always
+      containers:
+        - name: plausible-smtp
+          image: bytemark/smtp:latest
+          imagePullPolicy: Always
+          ports:
+            - containerPort: 25
+          securityContext:
+            allowPrivilegeEscalation: false
+          resources:
+            limits:
+              memory: 512Mi
+              cpu: 500m
+            requests:
+              memory: 5Mi
+              cpu: 100m
+          readinessProbe:
+            tcpSocket:
+              port: 25
+            initialDelaySeconds: 20
+            failureThreshold: 6
+            periodSeconds: 10
+          livenessProbe:
+            tcpSocket:
+              port: 25
+            initialDelaySeconds: 30
+            failureThreshold: 3
+            periodSeconds: 10

kubernetes/plausible.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: plausible
+  labels:
+    app.kubernetes.io/name: plausible
+    app.kubernetes.io/component: server
+spec:
+  type: LoadBalancer
+  ports:
+    - name: http
+      port: 8000
+      targetPort: 8000
+      protocol: TCP
+  selector:
+    app.kubernetes.io/name: plausible
+    app.kubernetes.io/component: server
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: plausible
+  labels:
+    app.kubernetes.io/name: plausible
+    app.kubernetes.io/component: server
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: plausible
+      app.kubernetes.io/component: server
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: plausible
+        app.kubernetes.io/component: server
+    spec:
+      restartPolicy: Always
+      containers:
+        - name: plausible
+          image: plausible/analytics:latest
+          imagePullPolicy: Always
+          args:
+            - /bin/sh
+            - -c
+            - sleep 10 && /entrypoint.sh db createdb && /entrypoint.sh db migrate && /entrypoint.sh db init-admin && /entrypoint.sh run
+          ports:
+            - containerPort: 8000
+          envFrom:
+            - configMapRef:
+                name: plausible-config
+          env:
+            - name: POSTGRES_USER
+              valueFrom:
+                secretKeyRef:
+                  name: plausible-db-user
+                  key: username
+            - name: POSTGRES_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: plausible-db-user
+                  key: password
+            - name: CLICKHOUSE_USER
+              valueFrom:
+                secretKeyRef:
+                  name: plausible-events-db-user
+                  key: username
+            - name: CLICKHOUSE_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: plausible-events-db-user
+                  key: password
+            - name: DATABASE_URL
+              value: postgres://$(POSTGRES_USER):$(POSTGRES_PASSWORD)@$(PLAUSIBLE_DB_SERVICE_HOST):$(PLAUSIBLE_DB_SERVICE_PORT)/plausible
+            - name: CLICKHOUSE_DATABASE_URL
+              value: http://$(CLICKHOUSE_USER):$(CLICKHOUSE_PASSWORD)@$(PLAUSIBLE_EVENTS_DB_SERVICE_HOST):$(PLAUSIBLE_EVENTS_DB_SERVICE_PORT)/plausible
+            - name: SMTP_HOST_ADDR
+              value: $(PLAUSIBLE_SMTP_SERVICE_HOST)
+          securityContext:
+            allowPrivilegeEscalation: false
+          resources:
+            limits:
+              memory: 2Gi
+              cpu: 1500m
+            requests:
+              memory: 200Mi
+              cpu: 250m
+          readinessProbe:
+            httpGet:
+              path: /api/health
+              port: 8000
+            initialDelaySeconds: 35
+            failureThreshold: 6
+            periodSeconds: 10
+          livenessProbe:
+            httpGet:
+              path: /api/health
+              port: 8000
+            initialDelaySeconds: 45
+            failureThreshold: 3
+            periodSeconds: 10