# 定义前端
frontend http-in
bind *:80
# 根据域名定义不同的ACL
acl www.domain1.com hdr_dom(host) -i www.domain1.com www.domain3.com
acl www.domain2.com hdr_dom(host) -i www.domain2.com
# 使用backend指令根据ACL结果决定使用哪个后端
use_backend server1 if www.domain1.com
use_backend server2 if www.domain2.com
# 定义后端
backend server1
server server1 192.168.0.1:80 check
backend server2
server server2 192.168.0.2:80 check