7.x
In OpenStack, the ERROR state indicates that a previous operation (such as creation, resize, migration or power operation) has failed and manual intervention is required.
Please run the following to obtain timestamp and event information.
#openstack server event list --long <instance UUID>
ie.
# openstack server event list --long ########-####-####-####-############+------------------------------------------+--------------------------------------+---------------+----------------------------+---------+----------------------------------+------------------------------------------------------------------+| Request ID | Server ID | Action | Start Time | Message | Project ID | User ID |+------------------------------------------+--------------------------------------+---------------+----------------------------+---------+----------------------------------+------------------------------------------------------------------+| req-########-####-####-####-###########4 | ########-####-####-####-############ | reboot | 2025-05-22T16:27:40.000000 | Error | <project ID> | <user UUID> || req-########-####-####-####-###########3 | ########-####-####-####-############ | stop | 2025-05-22T13:35:00.000000 | None | <project ID> | <user UUID> || req-########-####-####-####-###########2 | ########-####-####-####-############ | attach_volume | 2024-01-22T12:59:08.000000 | None | <project ID> | <user UUID> || req-########-####-####-####-###########1 | ########-####-####-####-############ | create | 2024-01-22T12:55:35.000000 | None | <project ID> | <user UUID> |+------------------------------------------+--------------------------------------+---------------+----------------------------+---------+----------------------------------+------------------------------------------------------------------+
#openstack server event show <instance UUID> <request-ID of error event from above>events field from the command in #2. To see what happened.#openstack server set --state active <instance UUID>