Action

See also: How to manage actions

In Juju, an action is a script that is triggered via the juju CLI client and applied to a unit. It contains a list of commands defined by a charm to allow a user with the right access level to interact with the application. An action’s parameters are defined as a map in a YAML file, and are validated against the schema defined in the actions.yaml file of the charm.

(Starting with juju v.3.0: ) Actions are identified by integers (instead of UUIDs).

(Starting with juju v.3.0: ) Running an action defaults to waiting for the output before returning. This synchronous behaviour allows actions to be easily be included in command-line pipelines.

(Starting with juju v.3.0: ) Actions are composed of tasks and operations. (If an action defines a named unit of work – e.g., back up the database – that can be executed on selected units, a task is the execution of the action on each target unit, and an operation is the group of tasks queued by running an action across one or more units.)

Last updated 2 months ago.