day3修改配置文件

    有如下配置文件，在指定文件位置添加一条新的记录：

global       
        log 127.0.0.1 local2
        daemon
        maxconn 256
        log 127.0.0.1 local2 info
defaults
        log global
        mode http
        timeout connect 5000ms
        timeout client 50000ms
        timeout server 50000ms
        option  dontlognull

listen stats :8888
        stats enable
        stats uri       /admin
        stats auth      admin:1234

frontend oldboy.org
        bind 0.0.0.0:80
        option httplog
        option httpclose
        option  forwardfor
        log global
        acl www hdr_reg(host) -i www.oldboy.org
        use_backend www.oldboy.org if www

backend test.oldboy.org
        server 100.1.7.9 100.1.7.9 weight 20 maxconn 3000

backend buy.oldboy.org
        server 100.1.7.90 100.1.7.90 weight 20 maxconn 3000

原配置文件如下
添加用户输入内容如下：
{"backend": "test.oldboy.org","record":{"server": "100.1.7.999","weight": 20,"maxconn": 30}}

global       
        log 127.0.0.1 local2
        daemon
        maxconn 256
        log 127.0.0.1 local2 info
defaults
        log global
        mode http
        timeout connect 5000ms
        timeout client 50000ms
        timeout server 50000ms
        option  dontlognull

listen stats :8888
        stats enable
        stats uri       /admin
        stats auth      admin:1234

frontend oldboy.org
        bind 0.0.0.0:80
        option httplog
        option httpclose
        option  forwardfor
        log global
        acl www hdr_reg(host) -i www.oldboy.org
        use_backend www.oldboy.org if www

backend www.oldboy.org
        server 100.1.7.9 100.1.7.9 weight 20 maxconn 3000

backend buy.oldboy.org
        server 100.1.7.90 100.1.7.90 weight 20 maxconn 3000

原配置文件如下