Comment 1 for bug 1555203

Example snapshot for the remove node-1 and add node-3 controller. As you can see there was undesired mysql downtime to the remaining node-2, see events after the 2016-03-09 15:54:54 :
Mar 9 15:55:46 notice: notice: process_lrm_event: Operation p_mysqld_monitor_60000: unknown error (node=node-2.test.domain.local, call=352, rc=1, cib-update=378, confirmed=false)