It is possible that you lose the administrator password of an instance so that you can no longer access it. This can be very unhelpfull if you need access to the system for necessary or regular maintenance and management.
Openstack offers the possibility to reset the password of an instance. For this you need to have access to our CLI interface and open stack tools.
With the command below you can reset the password for your instance to a new password.
- nova set-password INSTANCE-UUID
Then log on with the root user and new password to the instance for which you performed the reset and you will have access to the system again.