N8N - Kubernetes complete configuration

n8n-deployment.yml

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: n8n-deployment
  namespace: standard
  labels: &labels
    app: n8n
    component: deployment
spec:
  replicas: 1
  selector:
    matchLabels: *labels
  template:
    metadata:
      labels: *labels
      annotations:
        prometheus.io/scrape: "true"
        prometheus.io/port: "5678"
    spec:
      containers:
      - name: n8n
        image: n8nio/n8n
        imagePullPolicy: IfNotPresent
        ports:
        - name: http-metrics
          containerPort: 5678
        envFrom:
        - secretRef:
            name: n8n-secrets
        livenessProbe:
          httpGet:
            path: /healthz
            port: 5678
        readinessProbe:
          httpGet:
            path: /healthz
            port: 5678
        resources:
          limits:
            cpu: "1.0"
            memory: "1024Mi"
          requests:
            cpu: "0.5"
            memory: 512Mi

n8n-ingress.yml

---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: n8n-ingress
  namespace: standard
  labels: &labels
    app: n8n
    component: ingress
  annotations:
    kubernetes.io/ingress.class: "nginx"
spec:
  tls:
  - hosts:
    - your.domain.com
    secretName: {{ YOUR_SECRET_TLS_CONFIG }}
  rules:
  - host: your.domain.com
    http:
      paths:
      - path: /
        backend:
          serviceName: n8n-service
          servicePort: 80

n8n-secrets.yml

apiVersion: v1
kind: Secret
type: Opaque
metadata:
  name: n8n-secrets
  namespace: standard
  labels:
    app: n8n
    component: secrets
stringData:
  DB_TYPE: "postgresdb"
  DB_POSTGRESDB_USER: "n8n"
  DB_POSTGRESDB_DATABASE: "n8n"
  DB_POSTGRESDB_PASSWORD: "{{ PASSWORD }}"
  DB_POSTGRESDB_HOST: "{{ HOST }}"
  DB_POSTGRESDB_PORT: "5432"
  # Basic auth credentials
  N8N_BASIC_AUTH_ACTIVE: "true"
  N8N_BASIC_AUTH_USER: "n8n"
  N8N_BASIC_AUTH_PASSWORD: "{{ PASSWORD }}"

  N8N_HOST: "your.domain.com"
  N8N_ENCRYPTION_KEY: "{{ PASSWORD }}"
  GENERIC_TIMEZONE: "Europe/Lisbon"
  WEBHOOK_TUNNEL_URL: "https://your.domain.com/"
  NODE_ENV: "production"
  N8N_METRICS: "true"
  # Increase node max memory
  NODE_OPTIONS: "--max_old_space_size=1024"
  # Set n8n to work as single thread instead of forking to worker threads
  EXECUTIONS_PROCESS: "main"

n8n-service.yml

---
apiVersion: v1
kind: Service
metadata:
  name: n8n-service
  namespace: standard
  annotations:
    prometheus.io/probe: "true"
    prometheus.io/probe-path: "/healthz"
  labels:
    app: n8n
    component: service
spec:
  type: ClusterIP
  selector:
    app: n8n
    component: deployment
  ports:
  - protocol: TCP
    name: http
    port: 80
    targetPort: 5678

postgres.yml

---
apiVersion: v1
kind: Service
metadata:
  name: n8n-postgres
  namespace: standard
  labels: &labels
    app: n8n
    component: database
spec:
  ports:
    - name: postgres
      port: 5432
      targetPort: 5432
  clusterIP: None
  selector:
    app: n8n
    component: database
---
apiVersion: apps/v1beta2
kind: StatefulSet
metadata:
  name: n8n-postgres
  namespace: standard
  labels: &labels
    app: n8n
    component: database
spec:
  serviceName: "n8n-postgres"
  replicas: 1
  selector:
    matchLabels: *labels
  template:
    metadata:
      labels: *labels
    spec:
      containers:
      - name: postgresql
        image: postgres:10
        ports:
        - name: postgres
          containerPort: 5432
        env:
        - name: PGDATA
          value: /var/lib/postgresql/data/pgdata
        - name: POSTGRES_USER
          value: n8n
        - name: POSTGRES_DB
          value: n8n
        - name: POSTGRES_PASSWORD
          value: {{ PASSWORD }}

        volumeMounts:
        - name: data
          mountPath: /var/lib/postgresql/data

  volumeClaimTemplates:
  - metadata:
      name: data
    spec:
      accessModes: [ "ReadWriteOnce" ]
      storageClassName: "gp2"
      resources:
        requests:
          storage: 1Gi