Pingdom 工具 503 服务器不可用错误。有人可以解释错误和可能的解决方案吗?

Pingdom Tools 503 server not available error. Can someone explain the error and possible resolutions to this?

我在 pingdom 工具上检查站点时收到以下错误描述。有人可以解释此错误背后的可能原因以及如何解决吗?

Response Headers 503
Server: Apache
Connection: Close
X-Powered-By: PHP/5.4.45
Transfer-Encoding: chunked
Retry-After: 86400
Content-Type: text/html; charset=UTF-8

Request Headers
Pragma: no-cache
Accept-Encoding: gzip, deflate, sdch
Host: www.dummyname.com
Accept-Language: en-US,en;q=0.8
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Cache-Control: no-cache
Connection: keep-alive

每个错误 5xx 都是服务器端的,这意味着您无能为力。

如果您查看错误代码消息,您可以检查以下内容:

503 Service Unavailable The server is currently unavailable (because it is overloaded or down for maintenance). Generally, this is a temporary state.[63]

pingdom 是一个大服务器,所以它肯定有几台服务器在工作,您的计算机刚刚使用的那台好像挂了,继续重试可能会有帮助

https://en.wikipedia.org/wiki/List_of_HTTP_status_codes