nginx配置反向代理CAS单点登录应用

新增如下配置即可：

location /cas {
    proxy_pass http://172.16.20.155:8080/cas;
    proxy_redirect default;
    proxy_read_timeout 600s;
    proxy_set_header X-Real-IP  $remote_addr;
    proxy_set_header Host $host:$server_port;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    index index.html index.htm;
}