12.6. Disaster Recovery
When the master volume goes offline, you can perform the following disaster recovery procedures to minimize the interruption of service:
12.6.1. Promoting a Slave to Master
If the master volume goes offline, you can promote a slave volume to be the master, and start using that volume for data access.
Run the following commands on the slave machine to promote it to be the master:
# gluster volume set VOLNAME geo-replication.indexing on# gluster volume set VOLNAME changelog on
You can now configure applications to use the slave volume for I/O operations.