The server commands are used to get information about servers.
server set_weight: Set a server's weight, which
determines its likelihood of being chosen to process requests
or replace a failed master.
server lookup_uuid: Return a server's UUID value.
server set_mode: Set a server's mode, which
determines whether it can process read-only, read-write, or
both transaction types.
server set_status: Set a server's status, which
determines whether it is primary, backup, spare, or faulty.