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https://github.com/8gears/n8n-helm-chart

A Kubernetes Helm chart for n8n a Workflow Automation Tool. Easily automate tasks across different services.
https://github.com/8gears/n8n-helm-chart

helm-chart kubernetes n8n self-hosted workflow workflow-automation

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A Kubernetes Helm chart for n8n a Workflow Automation Tool. Easily automate tasks across different services.

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> [!IMPORTANT]

> We would like to bring this Helm chart to the next level, in terms of automation, governance and documentation.  This can only be achieved with a diverse community. Hence, we are looking for additional maintainers and contributors to join this project. [Reach out](https://github.com/8gears/n8n-helm-chart/discussions/90) to us if you are interested in contributing.



# n8n Helm Chart for Kubernetes



[n8n](https://github.com/n8n-io/n8n) is an extendable workflow automation tool.



[![Artifact HUB](https://img.shields.io/endpoint?url=https://artifacthub.io/badge/repository/n8n)](https://artifacthub.io/packages/helm/open-8gears/n8n)



The Helm chart source code location

is [github.com/8gears/n8n-helm-chart](https://github.com/8gears/n8n-helm-chart)



## Requirements



Before you start, make sure you have the following tools ready:



- Helm >= 3.8

- external Postgres DB or  external MySQL | embedded SQLite (bundled with n8n)

- Helmfile (Optional)



## Configuration



The `values.yaml` file is divided into a n8n specific configuration section, and

a Kubernetes deployment-specific section.



The shown values represent Helm Chart defaults, not the application defaults.

In many cases, the Helm Chart defaults are empty.

The comments behind the values provide a description and display the application

default.



These n8n config options should be attached below the root elements `secret:`

or `config:` in the `values.yaml`.

(See the [typical-values-example](#typical-values-example) section).



You decide what should go into `secret` and what should be a `config`.

There is no restriction, mix and match as you like.



# Installation



Install chart



```shell

helm install my-n8n oci://8gears.container-registry.com/library/n8n --version 0.23.1

```



# N8N Specific Config Section



Every possible n8n config value can be set,

even if it is not mentioned in the excerpt below.

All application config settings are described in the:

[n8n configuration options](https://github.com/n8n-io/n8n/blob/master/packages/cli/src/config/schema.ts).

Treat the n8n provided config documentation as the source of truth,

this Charts just forwards everything to n8n.



```yaml

database:

  type:   # Type of database to use - Other possible types ['sqlite', 'mariadb', 'mysqldb', 'postgresdb'] - default: sqlite

  tablePrefix:      # Prefix for table names - default: ''

  postgresdb:

    database:       # PostgresDB Database - default: n8n

    host:           # PostgresDB Host - default: localhost

    password:       # PostgresDB Password - default: ''

    port:           # PostgresDB Port - default: 5432

    user:           # PostgresDB User - default: root

    schema:         # PostgresDB Schema - default: public

    ssl:

      ca:             # SSL certificate authority - default: ''

      cert:           # SSL certificate - default: ''

      key:            # SSL key - default: ''

      rejectUnauthorized:    # If unauthorized SSL connections should be rejected - default: true

  mysqldb:

    database:        # MySQL Database - default: n8n

    host:            # MySQL Host - default: localhost

    password:        # MySQL Password - default: ''

    port:            # MySQL Port - default: 3306

    user:            # MySQL User - default: root

credentials:

  overwrite:

    data:        # Overwrites for credentials - default: "{}"

    endpoint:    # Fetch credentials from API - default: ''



executions:

  process:              # In what process workflows should be executed - possible values [main, own] - default: own

  timeout:              # Max run time (seconds) before stopping the workflow execution - default: -1

  maxTimeout:           # Max execution time (seconds) that can be set for a workflow individually - default: 3600

  saveDataOnError:      # What workflow execution data to save on error - possible values [all , none] - default: all

  saveDataOnSuccess:    # What workflow execution data to save on success - possible values [all , none] - default: all

  saveDataManualExecutions:    # Save data of executions when started manually via editor - default: false

  pruneData:            # Delete data of past executions on a rolling basis - default: false

  pruneDataMaxAge:      # How old (hours) the execution data has to be to get deleted - default: 336

  pruneDataTimeout:     # Timeout (seconds) after execution data has been pruned - default: 3600

generic:

  timezone:       # The timezone to use - default: America/New_York

path:           # Path n8n is deployed to - default: "/"

host:           # Host name n8n can be reached - default: localhost

port:           # HTTP port n8n can be reached - default: 5678

listen_address: # IP address n8n should listen on - default: 0.0.0.0

protocol:       # HTTP Protocol via which n8n can be reached - possible values [http , https] - default: http

ssl_key:        # SSL Key for HTTPS Protocol - default: ''

ssl_cert:       # SSL Cert for HTTPS Protocol - default: ''

security:

  excludeEndpoints: # Additional endpoints to exclude auth checks. Multiple endpoints can be separated by colon - default: ''

  basicAuth:

    active:     # If basic auth should be activated for editor and REST-API - default: false

    user:       # The name of the basic auth user - default: ''

    password:   # The password of the basic auth user - default: ''

    hash:       # If password for basic auth is hashed - default: false

  jwtAuth:

    active:               # If JWT auth should be activated for editor and REST-API - default: false

    jwtHeader:            # The request header containing a signed JWT - default: ''

    jwtHeaderValuePrefix: # The request header value prefix to strip (optional) default: ''

    jwksUri:              # The URI to fetch JWK Set for JWT authentication - default: ''

    jwtIssuer:            # JWT issuer to expect (optional) - default: ''

    jwtNamespace:         # JWT namespace to expect (optional) -  default: ''

    jwtAllowedTenantKey:  # JWT tenant key name to inspect within JWT namespace (optional) - default: ''

    jwtAllowedTenant:     # JWT tenant to allow (optional) - default: ''

endpoints:

  rest:             # Path for rest endpoint  default: rest

  webhook:          # Path for webhook endpoint  default: webhook

  webhookTest:      # Path for test-webhook endpoint  default: webhook-test

  webhookWaiting:   # Path for test-webhook endpoint  default: webhook-waiting

externalHookFiles:  # Files containing external hooks. Multiple files can be separated by colon - default: ''

nodes:

  exclude:          # Nodes not to load - default: "[]"

  errorTriggerType: # Node Type to use as Error Trigger - default: n8n-nodes-base.errorTrigger

# the list goes on...

```



### Values



The values file consists of n8n specific sections `config` and `secret` where

you paste the n8n config like shown above.



```yaml

# The n8n related part of the config

config: # Dict with all n8n config options

#    database:

#      type: postgresdb

#      postgresdb:

#        database: n8n

#        host: localhost

#

# existingSecret and secret are exclusive, with existingSecret taking priority.

# existingSecret: "" # Use an existing Kubernetes secret, e.g created by hand or Vault operator.

secret: # Dict with all n8n config options, unlike config the values here will end up in a secret.

#    database:

#      postgresdb:

#        password: here_db_root_password



##

##

## Common Kubernetes Config Settings

persistence:

  ## If true, use a Persistent Volume Claim, If false, use emptyDir

  ##

  enabled: false

  type: emptyDir # what type volume, possible options are [existing, emptyDir, dynamic] dynamic for Dynamic Volume Provisioning, existing for using an existing Claim

  ## Persistent Volume Storage Class

  ## If defined, storageClassName: 

  ## If set to "-", storageClassName: "", which disables dynamic provisioning

  ## If undefined (the default) or set to null, no storageClassName spec is

  ##   set, choosing the default provisioner.  (gp2 on AWS, standard on

  ##   GKE, AWS & OpenStack)

  ##

  # storageClass: "-"

  ## PVC annotations

  #

  # If you need this annotation include it under values.yml file and pvc.yml template will add it.

  # This is not maintained at Helm v3 anymore.

  # https://github.com/8gears/n8n-helm-chart/issues/8

  #

  # annotations:

  #   helm.sh/resource-policy: keep

  ## Persistent Volume Access Mode

  ##

  accessModes:

    - ReadWriteOnce

  ## Persistent Volume size

  ##

  size: 1Gi

  ## Use an existing PVC

  ##

  # existingClaim:



# Set additional environment variables on the Deployment

extraEnv: { }

# Set this if running behind a reverse proxy and the external port is different from the port n8n runs on

#   WEBHOOK_TUNNEL_URL: "https://n8n.myhost.com/



replicaCount: 1



image:

  repository: n8nio/n8n

  pullPolicy: IfNotPresent

  # Overrides the image tag whose default is the chart appVersion.

  tag: ""



imagePullSecrets: [ ]

nameOverride: ""

fullnameOverride: ""



serviceAccount:

  # Specifies whether a service account should be created

  create: true

  # Annotations to add to the service account

  annotations: { }

  # The name of the service account to use.

  # If not set and create is true, a name is generated using the fullname template

  name: ""



podAnnotations: { }



podSecurityContext: { }

# fsGroup: 2000



securityContext: { }

  # capabilities:

  #   drop:

#   - ALL

# readOnlyRootFilesystem: true

# runAsNonRoot: true

# runAsUser: 1000



service:

  type: ClusterIP

  port: 80

  annotations: { }



ingress:

  enabled: false

  annotations: { }

  # kubernetes.io/ingress.class: nginx

  # kubernetes.io/tls-acme: "true"

  hosts:

    - host: chart-example.local

      paths: [ ]

  tls: [ ]

  #  - secretName: chart-example-tls

  #    hosts:

  #      - chart-example.local



resources: { }

  # We usually recommend not to specify default resources and to leave this as a conscious

  # choice for the user. This also increases chances charts run on environments with little

  # resources, such as Minikube. If you do want to specify resources, uncomment the following

  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.

  # limits:

  #   cpu: 100m

#   memory: 128Mi

# requests:

#   cpu: 100m

#   memory: 128Mi



autoscaling:

  enabled: false

  minReplicas: 1

  maxReplicas: 100

  targetCPUUtilizationPercentage: 80

  # targetMemoryUtilizationPercentage: 80



nodeSelector: { }



tolerations: [ ]



affinity: { }



scaling:

  enabled: false



  worker:

    count: 2

    concurrency: 2



  webhook:

    enabled: false

    count: 1



  redis:

    host:

    password:



redis:

  enabled: false

  # Other default redis values: https://github.com/bitnami/charts/blob/master/bitnami/redis/values.yaml

```



# Typical Values Example



A typical example of a config in combination with a secret.



```yaml

# values.yaml



config:

  database:

    type: postgresdb

    postgresdb:

      host: 192.168.0.52

secret:

  database:

    postgresdb:

      password: 'big secret'



```



## Setup



```shell

helm install -f values.yaml -n n8n deploymentname n8n

```



## Scaling



n8n provides a **queue-mode**, where the workload is shared between multiple

instances of same n8n installation.   

This provides a shared load over multiple instances and a limited high

availability, because the controller instance remains as Single-Point-Of-Failure.



With the help of an internal/external redis server and by using the excellent

BullMQ, the tasks can be shared over different instances, which also can run on

different hosts.



[See docs about this Queue-Mode](https://docs.n8n.io/hosting/scaling/queue-mode/)



To enable this mode within this helm chart, you simply should

set `scaling.enable` to true.

This chart is configured to spawn two worker instances.



```yaml

scaling:

  enabled: true

```



You can define to spawn more workers, by set scaling.worker.count to a higher

number.

Also, it is possible to define your own external redis server.



```yaml

scaling:

  enabled: true

  redis:

    host: "redis-hostname"

    password: "redis-password-if-set"

```



If you want to use the internal redis server, set `redis.enable = true`. By

default, no redis server is spawned.



At last scaling option is it possible to create dedicated webhook instances,

which only process the webhooks.

If you set `scaling.webhook.enabled=true`, then webhook processing on the main

instance is disabled and by default a single webhook instance is started.



## Chart Deployment



1. Update the `Chart.yaml` with the new version number for the chart and/or app.

2. In GitHub create a new release with the the chart version number as the tag and title.