Remove a server out of LB temporarily
ipvsadm -d -f <fwmark> -r <ip>:0Add the server back to the load balancing group ipvsadm -a -f <fwmark> -r <ip>:0 -g -w 50
ipvsadm -d -f <fwmark> -r <ip>:0
ipvsadm -a -f <fwmark> -r <ip>:0 -g -w 50