import kubernetes setup from n8n-io/kubernetes-hosting

kubernetes/LICENSE

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+MIT License
+
+Copyright (c) 2022 n8n - Workflow Automation
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

kubernetes/README.md

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+# n8n-kubernetes-hosting
+
+Get up and running with n8n on the following platforms:
+
+* [AWS](https://docs.n8n.io/hosting/server-setups/aws/)
+* [Azure](https://docs.n8n.io/hosting/server-setups/azure/)
+* [Google Cloud Platform](https://docs.n8n.io/hosting/server-setups/google-cloud/)
+
+If you have questions after trying the tutorials, check out the [forums](https://community.n8n.io/).
+
+## Prerequisites
+
+Self-hosting n8n requires technical knowledge, including:
+
+* Setting up and configuring servers and containers
+* Managing application resources and scaling
+* Securing servers and applications
+* Configuring n8n
+
+n8n recommends self-hosting for expert users. Mistakes can lead to data loss, security issues, and downtime. If you aren't experienced at managing servers, n8n recommends [n8n Cloud](https://n8n.io/cloud/).
+
+## Contributions
+
+For common changes, please open a PR to `main` branch and we will merge this
+into cloud provider specific branches.
+
+If you have a contribution specific to a cloud provider, please open your PR to
+the relevant branch.

kubernetes/n8n-claim0-persistentvolumeclaim.yaml

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+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  labels:
+    service: n8n-claim0
+  name: n8n-claim0
+  namespace: n8n
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 2Gi

kubernetes/n8n-deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    service: n8n
+  name: n8n
+  namespace: n8n
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      service: n8n
+  strategy:
+    type: Recreate
+  template:
+    metadata:
+      labels:
+        service: n8n
+    spec:
+      initContainers:
+        - name: volume-permissions
+          image: busybox:1.36
+          command: ["sh", "-c", "chown 1000:1000 /data"]
+          volumeMounts:
+            - name: n8n-claim0
+              mountPath: /data
+      containers:
+        - command:
+            - /bin/sh
+          args:
+            - -c
+            - sleep 5; n8n start
+          env:
+            - name: DB_TYPE
+              value: postgresdb
+            - name: DB_POSTGRESDB_HOST
+              value: postgres-service.n8n.svc.cluster.local
+            - name: DB_POSTGRESDB_PORT
+              value: "5432"
+            - name: DB_POSTGRESDB_DATABASE
+              value: n8n
+            - name: DB_POSTGRESDB_USER
+              valueFrom:
+                secretKeyRef:
+                  name: postgres-secret
+                  key: POSTGRES_NON_ROOT_USER
+            - name: DB_POSTGRESDB_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: postgres-secret
+                  key: POSTGRES_NON_ROOT_PASSWORD
+            - name: N8N_PROTOCOL
+              value: http
+            - name: N8N_PORT
+              value: "5678"
+          image: n8nio/n8n
+          name: n8n
+          ports:
+            - containerPort: 5678
+          resources:
+            requests:
+              memory: "250Mi"
+            limits:
+              memory: "500Mi"
+          volumeMounts:
+            - mountPath: /home/node/.n8n
+              name: n8n-claim0
+      restartPolicy: Always
+      volumes:
+        - name: n8n-claim0
+          persistentVolumeClaim:
+            claimName: n8n-claim0
+        - name: n8n-secret
+          secret:
+            secretName: n8n-secret
+        - name: postgres-secret
+          secret:
+            secretName: postgres-secret

kubernetes/n8n-service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    service: n8n
+  name: n8n
+  namespace: n8n
+spec:
+  type: LoadBalancer
+  ports:
+    - name: "5678"
+      port: 5678
+      targetPort: 5678
+      protocol: TCP
+  selector:
+    service: n8n

kubernetes/namespace.yaml

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+apiVersion: v1
+kind: Namespace
+metadata:
+  name: n8n

kubernetes/postgres-claim0-persistentvolumeclaim.yaml

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+kind: PersistentVolumeClaim
+apiVersion: v1
+metadata:
+  name: postgresql-pv
+  namespace: n8n
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 300Gi

kubernetes/postgres-configmap.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: init-data
+  namespace: n8n
+data:
+  init-data.sh: |
+    #!/bin/bash
+    set -e;
+    if [ -n "${POSTGRES_NON_ROOT_USER:-}" ] && [ -n "${POSTGRES_NON_ROOT_PASSWORD:-}" ]; then
+    	psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL
+    		CREATE USER "${POSTGRES_NON_ROOT_USER}" WITH PASSWORD '${POSTGRES_NON_ROOT_PASSWORD}';
+    		GRANT ALL PRIVILEGES ON DATABASE ${POSTGRES_DB} TO "${POSTGRES_NON_ROOT_USER}";
+    	EOSQL
+    else
+    	echo "SETUP INFO: No Environment variables given!"
+    fi

kubernetes/postgres-deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    service: postgres-n8n
+  name: postgres
+  namespace: n8n
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      service: postgres-n8n
+  strategy:
+    rollingUpdate:
+      maxSurge: 1
+      maxUnavailable: 1
+    type: RollingUpdate
+  template:
+    metadata:
+      labels:
+        service: postgres-n8n
+    spec:
+      containers:
+        - image: postgres:11
+          name: postgres
+          resources:
+            limits:
+              cpu: "4"
+              memory: 4Gi
+            requests:
+              cpu: "1"
+              memory: 2Gi
+          ports:
+            - containerPort: 5432
+          volumeMounts:
+            - name: postgresql-pv
+              mountPath: /var/lib/postgresql/data
+            - name: init-data
+              mountPath: /docker-entrypoint-initdb.d/init-n8n-user.sh
+              subPath: init-data.sh
+          env:
+            - name: PGDATA
+              value: /var/lib/postgresql/data/pgdata      
+            - name: POSTGRES_USER
+              valueFrom:
+                secretKeyRef:
+                  name: postgres-secret
+                  key: POSTGRES_USER
+            - name: POSTGRES_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: postgres-secret
+                  key: POSTGRES_PASSWORD
+            - name: POSTGRES_DB
+              value: n8n
+            - name: POSTGRES_NON_ROOT_USER
+              valueFrom:
+                secretKeyRef:
+                  name: postgres-secret
+                  key: POSTGRES_NON_ROOT_USER
+            - name: POSTGRES_NON_ROOT_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: postgres-secret
+                  key: POSTGRES_NON_ROOT_PASSWORD
+            - name:   POSTGRES_HOST
+              value: postgres-service
+            - name: POSTGRES_PORT
+              value: '5432'
+      restartPolicy: Always
+      volumes:
+        - name: postgresql-pv
+          persistentVolumeClaim:
+            claimName: postgresql-pv
+        - name: postgres-secret
+          secret:
+            secretName: postgres-secret
+        - name: init-data
+          configMap:
+            name: init-data
+            defaultMode: 0744

kubernetes/postgres-secret.yaml

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+apiVersion: v1
+kind: Secret
+metadata:
+  namespace: n8n
+  name: postgres-secret
+type: Opaque
+stringData:
+  POSTGRES_USER: changeUser
+  POSTGRES_PASSWORD: changePassword
+  POSTGRES_DB: n8n
+  POSTGRES_NON_ROOT_USER: changeUser
+  POSTGRES_NON_ROOT_PASSWORD: changePassword

kubernetes/postgres-service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    service: postgres-n8n
+  name: postgres-service
+  namespace: n8n
+spec:
+  clusterIP: None
+  ports:
+    - name: "5432"
+      port: 5432
+      targetPort: 5432
+      protocol: TCP
+  selector:
+    service: postgres-n8n