Queue mode environment variables

File-based configuration

You can add _FILE to individual variables to provide their configuration in a separate file. Refer to Keeping sensitive data in separate files for more details.

You can run n8n in different modes depending on your needs. Queue mode provides the best scalability. Refer to Queue mode for more information.

Variable	Type	Default	Description
`OFFLOAD_MANUAL_EXECUTIONS_TO_WORKERS`	Boolean	`false`	Set to `true` if you want manual executions to run on the worker rather than on main.
`QUEUE_BULL_PREFIX`	String	-	Prefix to use for all queue keys.
`QUEUE_BULL_REDIS_DB`	Number	`0`	The Redis database used.
`QUEUE_BULL_REDIS_HOST`	String	`localhost`	The Redis host.
`QUEUE_BULL_REDIS_PORT`	Number	`6379`	The Redis port used.
`QUEUE_BULL_REDIS_USERNAME`	String	-	The Redis username (needs Redis version 6 or above). Don't define it for Redis < 6 compatibility
`QUEUE_BULL_REDIS_PASSWORD`	String	-	The Redis password.
`QUEUE_BULL_REDIS_TIMEOUT_THRESHOLD`	Number	`10000`	The Redis timeout threshold (in ms).
`QUEUE_BULL_REDIS_CLUSTER_NODES`	String	-	Expects a comma-separated list of Redis Cluster nodes in the format `host:port`, for the Redis client to initially connect to. If running in queue mode (`EXECUTIONS_MODE = queue`), setting this variable will create a Redis Cluster client instead of a Redis client, and n8n will ignore `QUEUE_BULL_REDIS_HOST` and `QUEUE_BULL_REDIS_PORT`.
`QUEUE_BULL_REDIS_TLS`	Boolean	`false`	Enable TLS on Redis connections.
`QUEUE_BULL_REDIS_DUALSTACK`	Boolean	`false`	Enable dual-stack support (IPv4 and IPv6) on Redis connections.
`QUEUE_WORKER_TIMEOUT` (deprecated)	Number	`30`	Deprecated Use `N8N_GRACEFUL_SHUTDOWN_TIMEOUT` instead. How long should n8n wait (seconds) for running executions before exiting worker process on shutdown.
`QUEUE_HEALTH_CHECK_ACTIVE`	Boolean	`false`	Whether to enable health checks (true) or disable (false).
`QUEUE_HEALTH_CHECK_PORT`	Number	5678	The port to serve health checks on. If you experience a port conflict error when starting a worker server using its default port, change this.
`QUEUE_WORKER_LOCK_DURATION`	Number	`60000`	How long (in ms) is the lease period for a worker to work on a message.
`QUEUE_WORKER_LOCK_RENEW_TIME`	Number	`10000`	How frequently (in ms) should a worker renew the lease time.
`QUEUE_WORKER_STALLED_INTERVAL`	Number	`30000`	How often should a worker check for stalled jobs (use 0 for never).
`QUEUE_WORKER_MAX_STALLED_COUNT`	Number	`1`	Maximum amount of times a stalled job will be re-processed.

Multi-main setup

Refer to Configuring multi-main setup for details.

Variable	Type	Default	Description
`N8N_MULTI_MAIN_SETUP_ENABLED`	Boolean	`false`	Whether to enable multi-main setup for queue mode (license required).
`N8N_MULTI_MAIN_SETUP_KEY_TTL`	Number	`10`	Time to live (in seconds) for leader key in multi-main setup.
`N8N_MULTI_MAIN_SETUP_CHECK_INTERVAL`	Number	`3`	Interval (in seconds) for leader check in multi-main setup.

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Queue mode environment variables

File-based configuration

You can add _FILE to individual variables to provide their configuration in a separate file. Refer to Keeping sensitive data in separate files for more details.

You can run n8n in different modes depending on your needs. Queue mode provides the best scalability. Refer to Queue mode for more information.

Variable	Type	Default	Description
`OFFLOAD_MANUAL_EXECUTIONS_TO_WORKERS`	Boolean	`false`	Set to `true` if you want manual executions to run on the worker rather than on main.
`QUEUE_BULL_PREFIX`	String	-	Prefix to use for all queue keys.
`QUEUE_BULL_REDIS_DB`	Number	`0`	The Redis database used.
`QUEUE_BULL_REDIS_HOST`	String	`localhost`	The Redis host.
`QUEUE_BULL_REDIS_PORT`	Number	`6379`	The Redis port used.
`QUEUE_BULL_REDIS_USERNAME`	String	-	The Redis username (needs Redis version 6 or above). Don't define it for Redis < 6 compatibility
`QUEUE_BULL_REDIS_PASSWORD`	String	-	The Redis password.
`QUEUE_BULL_REDIS_TIMEOUT_THRESHOLD`	Number	`10000`	The Redis timeout threshold (in ms).
`QUEUE_BULL_REDIS_CLUSTER_NODES`	String	-	Expects a comma-separated list of Redis Cluster nodes in the format `host:port`, for the Redis client to initially connect to. If running in queue mode (`EXECUTIONS_MODE = queue`), setting this variable will create a Redis Cluster client instead of a Redis client, and n8n will ignore `QUEUE_BULL_REDIS_HOST` and `QUEUE_BULL_REDIS_PORT`.
`QUEUE_BULL_REDIS_TLS`	Boolean	`false`	Enable TLS on Redis connections.
`QUEUE_BULL_REDIS_DUALSTACK`	Boolean	`false`	Enable dual-stack support (IPv4 and IPv6) on Redis connections.
`QUEUE_WORKER_TIMEOUT` (deprecated)	Number	`30`	Deprecated Use `N8N_GRACEFUL_SHUTDOWN_TIMEOUT` instead. How long should n8n wait (seconds) for running executions before exiting worker process on shutdown.
`QUEUE_HEALTH_CHECK_ACTIVE`	Boolean	`false`	Whether to enable health checks (true) or disable (false).
`QUEUE_HEALTH_CHECK_PORT`	Number	5678	The port to serve health checks on. If you experience a port conflict error when starting a worker server using its default port, change this.
`QUEUE_WORKER_LOCK_DURATION`	Number	`60000`	How long (in ms) is the lease period for a worker to work on a message.
`QUEUE_WORKER_LOCK_RENEW_TIME`	Number	`10000`	How frequently (in ms) should a worker renew the lease time.
`QUEUE_WORKER_STALLED_INTERVAL`	Number	`30000`	How often should a worker check for stalled jobs (use 0 for never).
`QUEUE_WORKER_MAX_STALLED_COUNT`	Number	`1`	Maximum amount of times a stalled job will be re-processed.

Multi-main setup

Refer to Configuring multi-main setup for details.

Variable	Type	Default	Description
`N8N_MULTI_MAIN_SETUP_ENABLED`	Boolean	`false`	Whether to enable multi-main setup for queue mode (license required).
`N8N_MULTI_MAIN_SETUP_KEY_TTL`	Number	`10`	Time to live (in seconds) for leader key in multi-main setup.
`N8N_MULTI_MAIN_SETUP_CHECK_INTERVAL`	Number	`3`	Interval (in seconds) for leader check in multi-main setup.

Queue mode environment variables

Queue mode environment variables

Multi-main setup

On this page

Queue mode environment variables

Queue mode environment variables

Multi-main setup

On this page