n8n

Description

n8n is an open-source workflow automation platform. Connect services, transform data, and build integrations using a visual low-code editor or custom JavaScript/Python nodes.

Overview

This role deploys n8n Community Edition using the upstream docker.n8n.io/n8nio/n8n image backed by a PostgreSQL database (consumed from the central svc-db-postgres via sys-stk-full). Authentication is handled by an oauth2-proxy sidecar (Keycloak OIDC) in V1, or left to n8n’s own user-management UI in V2. n8n Community Edition does not support LDAP — it is gated behind n8n’s Enterprise license (ldap.controller.ee.js is not registered in CE) — so no LDAP variant is offered. Credentials stored inside n8n are encrypted at rest with a stable N8N_ENCRYPTION_KEY.

Cosmos

The diagram places n8n in the Infinito.Nexus cosmos: the components it deploys (capabilities), the central services it consumes (dependencies), and its outward reach (federation and bridged external networks).

flowchart LR
    subgraph deps [Dependencies]
        dep_svc_ai_litellm["svc-ai-litellm 🐳🐝"]
        dep_svc_bkp_volume_2_local["svc-bkp-volume-2-local 💻"]
        dep_svc_db_postgres["svc-db-postgres 🐳🐝"]
        dep_svc_net_tor["svc-net-tor 🐳🐝"]
        dep_web_app_dashboard["web-app-dashboard 🐳🐝"]
        dep_web_app_hermes["web-app-hermes 🐳🐝"]
        dep_web_app_keycloak["web-app-keycloak 🐳🐝"]
        dep_web_app_matomo["web-app-matomo 🐳🐝"]
        dep_web_app_openclaw["web-app-openclaw 🐳🐝"]
        dep_web_app_openwebui["web-app-openwebui 🐳🐝"]
        dep_web_app_prometheus["web-app-prometheus 🐳🐝"]
        dep_web_app_stalwart["web-app-stalwart 🐳🐝"]
        dep_web_svc_css["web-svc-css 💻"]
        dep_web_svc_logout["web-svc-logout 🐳🐝"]
    end
    subgraph role [web-app-n8n 🐳🐝]
        svc_sso["sso"]
        svc_email["email"]
        svc_logout["logout"]
        svc_dashboard["dashboard"]
        svc_matomo["matomo"]
        svc_prometheus["prometheus"]
        svc_css["css"]
        svc_postgres["postgres"]
        svc_tor["tor"]
        svc_n8n["n8n"]
        svc_container_backup["container_backup"]
        svc_litellm["litellm"]
        svc_openwebui["openwebui"]
        svc_hermes["hermes"]
        svc_openclaw["openclaw"]
        svc_flowise["flowise ❌"]
    end
    dep_svc_ai_litellm -. "0..1" .-> svc_litellm
    dep_svc_bkp_volume_2_local -. "0..1" .-> svc_container_backup
    dep_svc_db_postgres -. "0..1" .-> svc_postgres
    dep_svc_net_tor -. "0..1" .-> svc_tor
    dep_web_app_dashboard -. "0..1" .-> svc_dashboard
    dep_web_app_hermes -. "0..1" .-> svc_hermes
    dep_web_app_keycloak -. "0..1" .-> svc_sso
    dep_web_app_matomo -. "0..1" .-> svc_matomo
    dep_web_app_openclaw -. "0..1" .-> svc_openclaw
    dep_web_app_openwebui -. "0..1" .-> svc_openwebui
    dep_web_app_prometheus -. "0..1" .-> svc_prometheus
    dep_web_app_stalwart -. "0..1" .-> svc_email
    dep_web_svc_css -. "0..1" .-> svc_css
    dep_web_svc_logout -. "0..1" .-> svc_logout

Solid 1:1 edges are fixed relationships; dashed 0..1 edges are conditional (enabled only in matching deployments); red 0..0 edges are turned off in this role. Node markers show the role’s deploy modes (💻 host, 🐳 compose, 🐝 swarm); ❌ marks a service that is explicitly turned off, and ⚙️ an Ansible role dependency declared in meta/main.yml.

Features

• Visual workflow editor: Drag-and-drop canvas with 400+ built-in integrations.

• Webhook triggers: Expose workflow endpoints for external systems to call.

• SSO via oauth2-proxy with auto-provisioning: V1 gates all access through the shared Keycloak OIDC client (oauth2-proxy edge). openresty forwards the authenticated identity to n8n as a trusted Remote-Email header (templates/proxy.conf.j2); an EXTERNAL_HOOK_FILES script (files/hooks.js, adapted from PavelSozonov/n8n-community-sso) reads that header, auto-provisions a local n8n user on first sign-in, and issues n8n’s own session cookie — so every Keycloak user lands directly in the workflow editor, with no second, n8n-local login step.

• Encrypted credential storage: N8N_ENCRYPTION_KEY protects all saved credentials at rest; the key is stable across re-deploys.

• Postgres backend: Workflow definitions, execution history, and user data persist in the central svc-db-postgres.

Quick Setup

Development

Clone, set up the workstation, and deploy n8n onto the local stack:

git clone https://github.com/infinito-nexus/core.git
cd core
make onboard
make compose-deploy mode=reinstall apps=web-app-n8n full_cycle=false

Production

Run the published image to provision the inventory and deploy n8n to a managed server (the mounted volume persists the inventory):

APP=web-app-n8n
HOST=<your-server>
DOMAIN=<your-domain>
TLS_MODE=self_signed
SSH_PUBLIC_KEY="<your-ssh-public-key>"

docker run --rm -it \
  -v "$PWD/inventories:/etc/infinito.nexus/inventories" \
  -e APP="$APP" -e HOST="$HOST" -e DOMAIN="$DOMAIN" -e TLS_MODE="$TLS_MODE" -e SSH_PUBLIC_KEY="$SSH_PUBLIC_KEY" \
  ghcr.io/infinito-nexus/core/debian bash -c '
    INVENTORY=/etc/infinito.nexus/inventories/production
    infinito administration inventory provision "$INVENTORY" \
      --inventory-file "$INVENTORY/devices.yml" \
      --host "$HOST" \
      --include "$APP" \
      --vars "{\"TLS_MODE\": \"$TLS_MODE\", \"DOMAIN_PRIMARY\": \"$DOMAIN\", \"users\": {\"administrator\": {\"authorized_keys\": [\"$SSH_PUBLIC_KEY\"]}}}" &&
    infinito administration deploy dedicated "$INVENTORY/devices.yml" \
      --password-file "$INVENTORY/.password" \
      --diff -vv'

Variant Matrix

	V1 (sso)	V2 (no auth)
oauth2-proxy SSO	✓	✗
Shared postgres	✓	✗

First-Run Setup

The deployment bootstrap (tasks/01_bootstrap.yml) automatically creates the owner account on first run using the platform-generated owner_password credential. No manual wizard step is required.

V1 (SSO): The oauth2-proxy edge gate redirects all requests to Keycloak. files/hooks.js reads the trusted Remote-Email header openresty sets once the gate passes and auto-provisions/logs in the matching n8n user (role global:member, or the pre-existing owner for users.administrator.email), so every Keycloak user — administrator and regular users alike — lands directly on n8n’s own workflow surface with no second, n8n-local login step.

V2 (no auth): n8n presents its native login UI. The administrator logs in with the email configured in users.administrator.email and the password stored in the platform credential credentials.owner_password. Retrieve it with:

ansible-vault view group_vars/web-app-n8n.yml

Developer Notes

Variant matrix: variants.yml. Service flags and image pin: services.yml. Credentials declared in secrets.yml.

Further Resources

• n8n Official Website

• n8n Docker Documentation

• n8n GitHub

Credits

Implemented by Prageeth Panicker. Part of the Infinito.Nexus Project and maintained by Kevin Veen-Birkenbach. Licensed under the Infinito.Nexus Community License (Non-Commercial).