​Tasks

How to configuration various options for tasks in Kestra.

Task Defaults

kestra.tasks.defaults

You can provide task defaults that will be applied to each task on your cluster if a property is not defined on flows or tasks. Task defaults allow ensuring a property is defined at a default value for these tasks.

kestra:
  tasks:
    defaults:
    - type: io.kestra.plugin.core.log.Log
      values:
        level: ERROR

Forced task defaults ensure a property is set cluster-wise for a task, and no task can override it. Forced task defaults can be handy to enforce security concerns, for example, by enforcing Shell tasks to run as Docker containers.

kestra:
  tasks:
    defaults:
      - type: io.kestra.plugin.scripts.shell.Script
        forced: true
        values:
          runner: DOCKER

Docker configuration

kestra.tasks.scripts.docker.volume-enabled

Volumes mount are disabled by default for security reasons, you can enabled it with this configurations:

kestra:
  tasks:
    scripts:
      docker:
        volume-enabled: true

Temporary storage configuration

Kestra writes temporary files during task processing. By default, files will be created on /tmp, but you can change the location with this configuration:

kestra:
  tasks:
    tmp-dir:
      path: /home/kestra/tmp

Note: The tmp-dir path must be aligned to the volume path otherwise Kestra will not know what directory to mount for the tmp directory.

volumes:
  - kestra-data:/app/storage
  - /var/run/docker.sock:/var/run/docker.sock
  - /home/kestra:/home/kestra

In this example, /home/kestra:/home/kestra matches the tasks tmp-dir field.