By default, you can run up to 300 workflows per node and up to 10,000 workflows can be queued if the number of actively running workflows is reached.

When the Orchestrator node has to run more than 300 concurrent workflows, the pending workflow runs are queued. When an active workflow run completes, the next workflow in the queue starts to run. If the maximum number of queued workflows is reached, the next workflow runs fail until one of the pending workflows starts to run.

On the Advanced Options page in Control Center, you can configure the workflow run properties.

Option

Description

Enable safe mode

If safe mode is enabled, all running workflows are canceled and are not resumed on the next Orchestrator node start.

Number of concurrent running workflows

The maximum number of concurrent Orchestrator node workflows that run simultaneously.

Maximum amount of running workflows in the queue

The number of workflow run requests that the Orchestrator node accepts before becoming unavailable.

Maximum number of preserved runs per workflow

The maximum number of finished workflow runs kept as history per workflow in a cluster. If the number is exceeded, the oldest workflow runs are deleted.

Log events expiration days

The number of days log events for the cluster are kept in the database before being purged.