An Action is what enables Watcher to transform the current state of a Cluster after an Audit.
An Action is an atomic task which changes the current state of a target Managed resource of the OpenStack Cluster such as:
In most cases, an Action triggers some concrete commands on an existing OpenStack module (Nova, Neutron, Cinder, Ironic, etc.).
An Action has a life-cycle and its current state may be one of the following:
Some default implementations are provided, but it is possible to develop new implementations which are dynamically loaded by Watcher at launch time.
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