nginx: [emerg] host not found in upstream "11.lum" in /usr/local/nginx/conf/vhost.conf:116
Nginx 启动成功！ Nginx was started successfully.
上面错误为nginx未启动，点启动时提示上面语句。
类似这告诉的错误，解决方案
点左侧 网站(虚拟主机) => 编辑 任何一个网站 => 不用改什么 直接保存 => 在去启动nginx 启动成功后 在去编辑任何一个网站，不用改什么直接保存 => ok
问题二：如果重启服务器后，Nginx为启动，在后台手动启动Nginx报下面的错误
Shutting down php_fpm Starting php_fpm done nginx: [emerg] could not build the server_names_hash, you should increase either server_names_hash_max_size: 512 or server_names_hash_bucket_size: 128 nginx: [emerg] could not build the server_names_hash, you should increase either server_names_hash_max_size: 512 or server_names_hash_bucket_size: 128
Nginx重启失败！ Nginx was restarted failed.
解决方法，登录ssh，把/usr/local/nginx/conf/nginx.conf 文件里这一行的数值修改下
原来的是：
server_names_hash_bucket_size 128;
改成：
server_names_hash_bucket_size 512;
如果自己手工修改过网站伪静态的，这块也检查下，有的时候也可能是网站伪静态的问题，删除之前的伪静态在启动，也可以解决问题。