HP VAN SDN Controller Administrator Guide v3

9. Once the controller restore is complete, change CTL_RESTORE_INSTALL_MODE equal to False
in the "~/.sdn_install_options" file on each controller so that it does not impact a future
installation. This is because a future installation of the controller may not involve starting in
recovery mode. (This is the opposite of step 2 of To Restore a Controller from a Backup.)
You can follow the restore progress in the controller log found at /opt/sdn/backup/restore.log.
The controller log also records any Restore failure due to a REST communication problem.
NOTE: To restore a controller team, restore each controller as a standalone controller. See
Distributed (Team) Backup and Restore, below.
8.3 Distributed (Team) Backup and Restore
In a team environment, all team members must successfully complete the backup.
A team backup consists of using the single-system backup process. All controllers in the team must
be active, and all of the backups in the team should be done either serially at approximately the
same time, or in parallel. To complete a teamed backup, no controller can be in a failed state. (A
controller team must have three controllers.) In a team environment, all team members must
successfully complete the backup for the backup to be successful.
A team restore consists of using the single-system restore process on each controller in the team.
Like backups, a system restore in a team should be done either serially at approximately the same
time, or in parallel.
NOTE: When restoring a team, be sure to re-install all of the controllers, before initiating the
actual restore on any of the controllers.
Also, if backing up the team controllers was done serially, then the restore of the team controllers
should be done in reverse order.
A controller that fails a restore operation will not be allowed to rejoin the team, and must be
re-added as a new controller.
There are reference scripts to automate the backup and restore of an entire team. See the appendix
titled Scripts.
8.4 Backup and Restore the Keystone Configuration and Database
Backup/Restore for the Keystone configuration and database are separate actions from the controller
Backup/Restore.
NOTE: These instructions apply to the default local Keystone instance (Keystone 2012.2) as
specified in the HP VAN SDN Controller Installation Guide. If you are using a different Keystone
installation, please follow the OpenStack instructions for backup/restore of the Keystone instance
specific to your installation. For OpenStack documentation, visit http://docs.openstack.org.
8.3 Distributed (Team) Backup and Restore 99