On Wed, Mar 9, 2016 at 11:33 AM, Amos Jeffries <squ...@treenet.co.nz> wrote:
> On 9/03/2016 4:32 a.m., Tomas Mozes wrote: > > Hello, > > I would like to create a file distribution cache with squid. There is an > > origin server that has some fixed limited capacity and I'd like to place > a > > few servers close to clients, in a mesh configuration (reverse proxy). > > > > http_port 80 accel > > cache_peer IP_ORIGIN parent 80 0 default no-query no-digest > > no-netdb-exchange > > cache_peer IP_SIBLING1 sibling 3128 3130 > > cache_peer IP_SIBLING2 sibling 3128 3130 > > ... > > > > Okay so far. > > > Now the question is - is it possible to specify a mapping between the > > hostname used on the cache vs the origin hostname? For example the origin > > is reachable via storage.example.com and I'd like the cache to be > > accesssible via cdn.example.com. So when a request comes to > cdn.example.com, > > it goes to the cache and it requests files from storage.example.com - > map > > cdn.example.com -> storage.example.com. I failed to find such an option > for > > cache_peer. > > > I'm not sure I follow, but it seems the answer is that what you are > looking for is: "cache_peer" itself *is* the mapping. > > # the mapping to send requests to storage.example.com > cache_peer storage.example.com 80 0 originserver name=SS > > # to decide _which_ requests go to storage.example.com > acl CDN dstdomain cdn.example.com > cache_peer_access SS allow CDN > > > There are two hostnames and a domain name involved with > CDN/accel/reverse-proxy setups. The three things are not necessarily the > same: > > * hostname_1 - the proxy server hostname > * hostname_2 - the origin server hostname > * domain - the public FQDN the client is requesting > > The two hostname are private if you wish. The domain is public with DNS > records pointing at the proxy(s). > > Amos > > _______________________________________________ > squid-users mailing list > squid-users@lists.squid-cache.org > http://lists.squid-cache.org/listinfo/squid-users Hello Amos, the origin server has multiple virtual hosts configured, so if it does not receive the Host: header by which it is configured (like storage.example.com), it will emit a 404. Currently, this does the following. The clients requests: GET /test.txt HTTP/1.1 Host: cdn.example.com This comes to squid, it will then send the same request to the origin: GET http://cdn.example.com/test.txt HTTP/1.1 Host: cdn.example.com The result is a 404. I would need squid to alter the Host: to storage.example.com. Is that possible? What I can do is to add a cdn.example.com server alias to the origin, then it works of course. Thanks, Tomas
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