ironic/doc/source/dev/states.rst

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Ironic's State Machine

State Machine Diagram

The diagram below shows the provisioning states that an Ironic node goes through during the lifetime of a node. The diagram also depicts the events that transition the node to different states.

Stable states are highlighted with a thicker border. All transitions from stable states are initiated by API requests. There are a few other API-initiated-transitions that are possible from non-stable states. The events for these API-initiated transitions are indicated with '(via API)'. Internally, the conductor initiates the other transitions (depicted in gray).

Note

For more information about the states, see the specification located at ironic-state-machine.