解决方案：
修改 nginx 配置文件

location ^~ /rabbitmq/ {
    proxy_pass              http://192.168.0.185:15672/; 
    proxy_set_header        Host $host;
    proxy_set_header        X-Real-IP $remote_addr;
    proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header        Upgrade $http_upgrade;
    proxy_set_header        Connection "upgrade";
    if ($request_uri ~* "/rabbitmq/(.*)"){
        proxy_pass http://192.168.0.185:15672/$1;
        break;