Google Cloud LB:更改“服务器错误"默认html页面 [英] Google Cloud LB: Change "server error" default html page

问题描述

默认情况下，如果负载均衡找不到将流量重定向到的后端，例如如果所有可用的后端都关闭，则会显示此 html 页面:

By default, if the load balance can't find a backend to redirect traffic to, for example if all available backends are down, it shows this html page:

成绩单:

服务器遇到临时错误，无法完成您的请求.请在 30 秒后重试.

Error: Server Error

The server encountered a temporary error and could not complete your request. Please try again in 30 seconds.

我想改用我自己的静态 html 页面.
我在 LB + 云存储页面上看到了这个 这里:

I would like to use my own static html page instead.
I saw this on the LB + Cloud storage page here:

您还可以配置自定义索引页面和自定义错误页面，如果请求的对象不存在，则将提供这些页面.这可以通过将网站配置添加到您的 Cloud Storage 存储桶来完成.通过网站配置，您可以直接从您自己域的 Cloud Storage 存储桶中提供静态网页.

You can also configure a custom index page and a custom error page that will be served if the requested object doesn’t exist. This can be done by adding a Website Configuration to your Cloud Storage bucket. With a Website Configuration, you could serve a static webpage directly out of a Cloud Storage bucket from your own domain.

这将如何工作?我知道如何在云存储上托管静态页面，但我将如何将它与 LB 一起使用?

How would that work ? I know how to host static page on cloud storage, but how would I use it with the LB ?

推荐答案

简单地说，你不能，至少现在是这样.

Simply put, you can't, at least for now.

HTTP 负载您发现的带云存储的平衡器处于 alpha 阶段，您需要申请白名单才能试用.但它不会解决你的问题.因为到目前为止，还没有办法根据后端的响应来手动控制负载均衡器的重定向.我认为这永远不可能.这不是 GCP 中负载平衡器的目的.

The HTTP Load Balancer with Cloud Storage you found is in alpha, you will need to request a whitelist to try it. But it won't solve your problem. Because as of now, there is no way to control a load balancer's redirection manully based on the backends' responses. I don't think that will ever be possible. It's not the purpose of a load balancer in GCP.

您还可以配置自定义索引页面和自定义错误页面，如果请求的对象不存在，则会提供这些页面.

You can also configure a custom index page and a custom error page that will be served if the requested object doesn’t exist.

以上语句仅表示您可以为存储桶中未找到的对象提供自定义 404 页面.如果您的后台服务关闭(502)，这并不意味着让您重定向流量.两者之间有很大的区别:我找不到页面和没有任何工作，因为我没有服务器.

The above statement only means that you can have a custom 404 page for unfound objects in the bucket. It's not meant to let you redirect traffic if your Back-services are down (502). There is a big difference between : I can't find a page, and Nothing is working because I don't have a server.

您只能将来自外部的流量重定向到网络内部.你不能做相反的事情.您不能要求负载均衡器根据响应进行重定向.

You can only redirect traffic coming from outside toward the inside of your network. You can't do the opposite. You can't ask the load balancer to redirect based on a response.

与其试图让 502 错误页面美观，不如先问问自己为什么会有它，然后尝试解决它.​​

Instead of trying to make the 502 error page beautiful, ask yourself why you have it in the first place, and try to fix that.

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