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Daniel W.
Asked: 2018-06-26 04:13:33 +0800 CST

Varnish set upstream proxy for backend

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backend default {
    .host = "external.site.com";
    .port = "80";
}

From the varnish server, I need to contact the backend via a proxy. How to add one?

There is nothing like .proxy = ""; in the backends configuration or?

I tried defining .host = "my-proxy-ip"; and setting req.http.Host = "external.site.com";, to use the proxy as backend and force the Host header but it didn't work.

proxy

1 Answers

  1. My first try by setting the proxy as a backend, instead of the final server itself was correct:

    backend default {
    .host = "my.proxy.com";
    .port = "8080";
}

    But it was not sufficient to rewrite the Host header. The req object itself must be rewritten:

    set req.url = "http://external.site.com" + req.url;
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