http {
    ...
    ...

    lua_shared_dict statics_dict    1M; # 初始化变量
    lua_package_path "/etc/nginx/ngx_lua_reqstatus/?.lua";  #路径
    log_by_lua_file "/etc/nginx/ngx_lua_reqstatus/hook.lua"; #  添加此句

    server {
        listen 80;
        server_name  justforfun.com; 
        location /{
            ...
        }
    }

    # 监控服务
    server {
        listen 127.0.0.1:6080;
        location /{
            content_by_lua_file "/etc/nginx/ngx_lua_reqstatus/status.lua";
        }
    }
}