Just yesterday I needed to do this. I host a friend's personal blog.
Originally I had a line in my default.vcl that sent any queries for
example.org/.info/.net to the nginx backend on the same machine.
However, I like yours better. It is simpler in execution than mine.
Old:
vcl_recv {
if (req.http.host == "(www.)example.\borg|info|net\b" ) {
set req.backend_hint = default;
}
}
This is a wordpress site mind you. He noticed this issue yesterday and
sent me a text. He updated his site @ example.org/wordpress/wp-admin/.
Someone he works with asked about his blog and he replied with
"example.net." Well, when his coworker when to example.net, my friend's
new post wasn't there. Surf to example.org and there sits the new post.
So, this tells me that varnish is keeping a separate cache for each
domain.tld of my friend's blog even though it's derived from the same WP
install.
New:
vcl_recv {
if (req.http.host == "(www.)example.org") {
set req.backend_hint = default;
}
if ( (req.http.host ~ "^(?i)www.example.net" || req.http.host ~
"^(?i)example.net" || req.http.host ~ "^(?i)www.example.info" ||
req.http.host ~ "^(?i)example.info") ) {
return (synth(750, ""));
}
}
sub vcl_synth {
if (resp.status == 750) {
set resp.status = 301;
set resp.http.Location = "http://www.example.org"; + req.url;
return(deliver);
}
}
I tested using curl -I and chrome and both worked wonderfully.
I'm going to try out your example and see what I get. Thank you
--
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Paul A. Procacci wrote:
On Fri, Feb 26, 2016 at 12:01:57PM +0200, [email protected] wrote:
Hello,
I would like to ask your for help after explaining the case and the
infrastructure for this domain. In the varnish configuration I restrict
some types of files to be accessed and downloaded and if some customer
wants to use this functionality I configure subdomain on it's domain on
nginx where these restrictions are not present. Although, my customer
do not want to change the links to the new subdomains (which rely on
nginx) in it's application and I want to redirect all old urls
(domain.com/somedir/download) to the new one - download.thedomain.com,
so if someone open the old url it's redirected to the subdomain on
nginx and the content to be loaded from nginx, not varnish (as the way
cpanel domain forwarder works).
The problem is that when I followed and configured the varnish official
documentation url guide it just change the url in varnishlog, but the
content is again openef from varnish, not nginx, also the url in the
browser is not rewritten.
My questions are 1) is it possible and if yes how, but if not 2) what
workaround can I use?
Thank you in advance. I will wait for you reply.
Hello,
It'd be helpful if you shared the parts of your configuration which perform
the rewriting of the url.
That aside, in order for the browser to request a differnet resource requires
a 301 (or similar) to be delivered from varnish or nginx. Here's an example:
#####################################################
sub vcl_recv
{
if(req.http.host ~ "(?i)^nothere\.com$"){
if(req.url ~ "(i?)^/file\.jpg$") {
return(synth(750, "http://here.com"; + req.url));
}
}
}
sub vcl_synth
{
if(resp.status == 750){
set resp.http.Location = resp.reason;
set resp.status = 301;
return (deliver);
}
}
#####################################################
Hope this helps.
~Paul
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