Checking master availability from additional network routes
masterha_secondary_check -s secondary_host1 -s secondary_host2 .. --user=ssh_username --master_host=host --master_ip=ip --master_port=port
See online reference (http://code.google.com/p/mysql-master-ha/wiki/Parameters#secondary_check_script) for details.
See online reference (http://code.google.com/p/mysql-master-ha/wiki/Parameters#secondary_check_script) for details.