踢掉某个项目的某个主机
echo "disable server backendname/hostname" |socat unix:/usr/local/haproxy/run/haproxy.stat stdio
 
开启某个项目的某个主机
echo "enable server   backendname/hostname" |socat unix:/usr/local/haproxy/run/haproxy.stat stdio
 
echo "disable server backendname/hostname" |socat unix:/usr/local/haproxy/run/haproxy.stat stdio
 
开启某个项目的某个主机
echo "enable server   backendname/hostname" |socat unix:/usr/local/haproxy/run/haproxy.stat stdio