如何合并这两个清漆后端？

Posted 2023-02-25

【中文标题】如何合并这两个清漆后端？

【英文标题】：How do I merge these two varnish backends?

【发布时间】：2019-06-21 03:40:41

【问题描述】：

我正在使用拇指和 s3。

我想在他们面前使用清漆。

我知道如何在它们中分别涂上清漆，但我无法将两者结合起来

thumor 的清漆设置

vcl 4.0;

import directors;

backend thumbor1  .host ="127.0.0.1"; .port="8888";  .max_connections = 200; .connect_timeout = 5s; .between_bytes_timeout  = 5s; 
# backend thumbor2  .host ="127.0.0.1"; .port="9002";  .max_connections = 200; .connect_timeout = 5s; .between_bytes_timeout  = 5s; 

acl internal 
    "localhost";
    "127.0.0.1";


sub vcl_init 
    new vdir = directors.round_robin();
    vdir.add_backend(thumbor1);
#     vdir.add_backend(thumbor2);


sub vcl_recv 
    set req.backend_hint = vdir.backend();
    if (req.method == "PURGE") 
         if (!client.ip ~ internal) 
            return (synth(405, "This IP is not allowed to send PURGE requests."));
         
         return (purge);
    

    if (req.url ~ "\?$") 
        set req.url = regsub(req.url, "\?$", "");
    
    return (hash);

s3 的清漆设置

 vcl 4.0;


 backend default
 
   .host = "my.bucket.s3.amazonaws.com";
   .port = "80";
 

 sub vcl_backend_fetch
 
   set bereq.http.Host = "my.bucket.s3.amazonaws.com";
   set bereq.http.Date = now;

 

我希望最终结果是这样的

client => varnish => thumbor => s3 (thumbnail image)
client => varnish => s3 (normal image)

【参考方案1】：

您应该将 2 个后端块放在一个文件中。然后在 vcl_recv 中，你应该通过一些标题、url 路径等设置你想要的后端。

要设置使用哪个后端，您可以使用：

set req.backend_hint = thumbor1;
# Or
set req.backend_hint = default;

在那里你可以找到我如何应用它来使用 2 个后端 - localhost:3000 & localhost:8080: https://github.com/new-fantastic/vsf-cache-varnish/blob/master/docker/varnish/shared.vcl