ChristianLempa_Boilerplates/library/compose/n8n-worker/compose.yaml.j2

services:
  {{ service_name }}:
    image: n8nio/n8n:1.118.1
    command: worker
    {#
      If not in swarm mode, apply container name and hostname
    #}
    {% if not swarm_enabled -%}
    container_name: {{ container_name }}
    hostname: {{ container_hostname }}
    {% endif -%}
    {#
      Environment variables for n8n worker configuration:
      - Database connection (must match n8n-server)
      - Encryption key (must match n8n-server)
      - Redis queue configuration
      - Optional metrics
    #}
    environment:
      - N8N_LOG_LEVEL={{ container_loglevel }}
      - GENERIC_TIMEZONE={{ container_timezone }}
      - TZ={{ container_timezone }}
      {% if database_enabled -%}
      {% if database_type == 'postgres' -%}
      - DB_TYPE=postgresdb
      - DB_POSTGRESDB_HOST={{ database_host }}
      - DB_POSTGRESDB_PORT={{ database_port }}
      - DB_POSTGRESDB_DATABASE={{ database_name }}
      - DB_POSTGRESDB_USER={{ database_user }}
      {% if swarm_enabled -%}
      - DB_POSTGRESDB_PASSWORD_FILE=/run/secrets/{{ service_name }}_database_password
      {% else -%}
      - DB_POSTGRESDB_PASSWORD={{ database_password }}
      {% endif -%}
      {% elif database_type == 'mysql' -%}
      - DB_TYPE=mysqldb
      - DB_MYSQLDB_HOST={{ database_host }}
      - DB_MYSQLDB_PORT={{ database_port }}
      - DB_MYSQLDB_DATABASE={{ database_name }}
      - DB_MYSQLDB_USER={{ database_user }}
      {% if swarm_enabled -%}
      - DB_MYSQLDB_PASSWORD_FILE=/run/secrets/{{ service_name }}_database_password
      {% else -%}
      - DB_MYSQLDB_PASSWORD={{ database_password }}
      {% endif -%}
      {% endif -%}
      {% endif -%}
      {% if swarm_enabled -%}
      - N8N_ENCRYPTION_KEY_FILE=/run/secrets/{{ service_name }}_encryption_key
      {% else -%}
      - N8N_ENCRYPTION_KEY={{ encryption_key }}
      {% endif -%}
      - EXECUTIONS_MODE=queue
      - QUEUE_BULL_REDIS_HOST={{ redis_host }}
      - QUEUE_BULL_REDIS_PORT={{ redis_port }}
      - QUEUE_HEALTH_CHECK_ACTIVE=true
      {% if metrics_enabled -%}
      - N8N_METRICS=true
      {% if metrics_detailed -%}
      - N8N_METRICS_INCLUDE_WORKFLOW_ID_LABELS=true
      - N8N_METRICS_INCLUDE_NODE_TYPE_LABEL=true
      {% endif -%}
      {% endif -%}
    {#
      Volume configuration for persistent data
    #}
    volumes:
      - /etc/localtime:/etc/localtime:ro
      - data:/home/node/.n8n
    {#
      If not in swarm mode, apply restart policy
    #}
    {% if not swarm_enabled -%}
    restart: {{ restart_policy }}
    {% endif -%}
    {#
      Deploy configuration for Swarm mode:
      - Multiple worker replicas for scaling
      - Uses Docker secrets for sensitive data
    #}
    {% if swarm_enabled -%}
    deploy:
      replicas: {{ swarm_replicas }}
      {% if swarm_placement_host -%}
      placement:
        constraints:
          - node.hostname == {{ swarm_placement_host }}
      {% endif -%}
    secrets:
      - {{ service_name }}_encryption_key
      {% if database_enabled -%}
      - {{ service_name }}_database_password
      {% endif -%}
    {% endif -%}

{#
  Volume definitions:
  - data: Persistent storage for n8n worker data
#}
volumes:
  data:
    driver: local

{#
  Docker Swarm secrets (only when swarm_enabled is set):
  - Encryption key and database password (external secrets)
#}
{% if swarm_enabled -%}
secrets:
  {{ service_name }}_encryption_key:
    external: true
  {% if database_enabled -%}
  {{ service_name }}_database_password:
    external: true
  {% endif -%}
{% endif -%}