Bare Metal Node States¶
This document provides a brief explanation of the bare metal node states that TripleO uses or might use. Please refer to the Ironic documentation for more details.
In a typical Ironic workflow nodes begin their life in a state called
Nodes in this state are not available for deployment, nor for most of other
actions. Ironic does not touch such nodes in any way.
In the TripleO workflow the nodes start their life in the
and only see the
enroll state if their power management fails to validate:
openstack overcloud import instackenv.json
Nodes can optionally be introspected in this step by passing the –provide flag which will progress them through through the manageable state and eventually to the available state ready for deployment.
To make nodes alive an operator uses
manage provisioning action to move
manageable state. During this transition the power and management
credentials (IPMI, SSH, etc) are validated to ensure that nodes in
manageable state are actually manageable by Ironic. This state is still not
available for deployment. With nodes in this state an operator can execute
various pre-deployment actions, such as introspection, RAID configuration, etc.
So to sum it up, nodes in
manageable state are being configured before
exposing them into the cloud.
openstack baremetal node manage <NAME OR UUID>
The last step before the deployment is to make nodes
available using the
provide provisioning action. Such nodes are exposed to nova, and can be
deployed to at any moment. No long-running configuration actions should be run
in this state.
Nodes which failed introspection stay in
manageable state and must be
reintrospected or made
openstack baremetal node provide <NAME OR UUID>