haproxy socat工具上线和下线后端服务器脚本

Posted 2021-06-29 y_zilong

 基于动态算法，默认调度算法roundrobin

[root@cen7_27 ~]# cat /etc/haproxy/conf.d/test.cfg 
listen web_port_80
   bind 10.0.0.27:80
   mode http
   balance roundrobin
   server 10.0.0.40 10.0.0.40:80 check inter 3000 fall 2 rise 5
   server 10.0.0.50 10.0.0.50:80 check inter 3000 fall 2 rise 5
[root@cen7_27 ~]# 

[root@cen7_27 ~]# cat haproxy_host_up_down.sh 
#!/bin/bash
. /etc/init.d/functions
case $1 in 
up)
   echo "set weight web_port_80/$2 1" |socat stdio /var/lib/haproxy/haproxy.sock
   [ $? -eq 0 ] && action "$2 is up"
   ;;
down)
   echo "set weight web_port_80/$2 0" |socat stdio /var/lib/haproxy/haproxy.sock
   [ $? -eq 0 ] && action "$2 is down"
   ;;
*)
   echo "Usage: `basename $0` up|down IP"
   ;;
esac
[root@cen7_27 ~]# chmod +x haproxy_host_up_down.sh 
[root@cen7_27 ~]# bash haproxy_host_up_down.sh down 10.0.0.40

10.0.0.40 is down                                          [  OK  ]
[root@cen7_27 ~]# bash haproxy_host_up_down.sh up 10.0.0.40

10.0.0.40 is up                                            [  OK  ]
[root@cen7_27 ~]#