Issues with Varnish 3.0 + Multiple Wordpress sites

[Miguel González]

Not sure about Varnish 3.0 syntax but you need to return a pass in
vcl_recv for wp-admin and other woocommerce sections (if you have
woocommerce):

        # --- WordPress specific configuration
        # Did not cache the admin and login pages
        if (req.url ~
"nocache|cart|my-account|checkout|addons|tienda|mi-cuenta|carro|producto/*|login|wp-admin|wp-(comments-post|login|signup|activate|mail|cron)\.php|preview\=true|admin-ajax\.php|xmlrpc\.php|bb-admin|whm-server-status|server-status|control\.php|bb-login\.php|bb-reset-password\.php|register\.php")
{
            return (pass);
        }


Not sure I have understood, those two extra sites run in the same Apache
server? Why don´t you use virtualhosts instead of port virtualhosts? I
run Varnish in front of 40 sites run by Apache without needing to
specify different backends (just one).

Regards,

Miguel



On 04/03/17 3:51 AM, Fabio Fraga [DS] wrote:
> Hey, folks.
> 
> I have a setup on CentOS 6.8 server with 1 single ip address and
> including Varnish + Nginx + php-fpm. Php works on 7.0 version.
> 
> My customer had a single website and the setup works fine so far. But he
> ask to include a two new websites. My headache starts here.
> 
> When i set the backends pointing to hostname and port (in nginx),
> varnish redirects to the first site. But, when i set the sub vcl_recv
> correctly (using regexp), i get the correct websites.
> My issue is on wp-admin. I can post text content, but i cant post images
> (got http error on wordpress).
> But if i remove the configuration of new backends, all things works fine.
> 
> Where am i going wrong?
> 
> Below my default.vcl.
> 
> ===============================
> 
> backend default {
> 
>         .host = “w.x.y.z”;
> 
>         .port = "8081";
> 
>         .connect_timeout = 60s;
> 
>         .first_byte_timeout = 60s;
> 
>         .between_bytes_timeout = 60s;
> 
>      }
> 
> backend bk1 {
> 
>         .host = “xyz.com.br <http://xyz.com.br>";
> 
>         .port = "8081";
> 
>         .connect_timeout = 60s;
> 
>         .first_byte_timeout = 60s;
> 
>         .between_bytes_timeout = 60s;
> 
>      }
> 
> backend bk2 {
> 
>         .host = “abc.com.br <http://abc.com.br>";
> 
>         .port = "8084";
> 
>         .connect_timeout = 60s;
> 
>         .first_byte_timeout = 60s;
> 
>         .between_bytes_timeout = 60s;
> 
>      }
> 
> backend bk3 {
> 
>         .host = “def.com.br <http://def.com.br>";
> 
>         .port = "8083";
> 
>         .connect_timeout = 60s;
> 
>         .first_byte_timeout = 60s;
> 
>         .between_bytes_timeout = 60s;
> 
>      }
> 
> acl purge {
> 
>   "localhost";
> 
>   "127.0.0.1";
> 
>   "w.x.y.z";
> 
> }
> 
> 
> sub vcl_recv {
> 
> 
>   if (req.http.host ~ "^(www\.)?xyz\.com\.br$") {
> 
>         set req.backend = bk1;
> 
>         return (lookup);
> 
>    }
> 
>   if (req.http.host ~ "^(www\.)?abc\.com\.br$") {
> 
>         set req.backend = bk2;
> 
>         return (lookup);
> 
>    }
> 
>   if (req.http.host ~ "^(www\.)?def\.com\.br$") {
> 
>         set req.backend = bk3;
> 
>         return (lookup);
> 
>    }
> 
> 
>   if (req.restarts == 0) {
> 
>     if (req.http.x-forwarded-for) {
> 
>       set req.http.X-Forwarded-For =
> 
>       req.http.X-Forwarded-For + ", " + client.ip;
> 
>     } else {
> 
>       set req.http.X-Forwarded-For = client.ip;
> 
>     }
> 
>   }
> 
> 
>   if (req.http.Accept-Encoding) {
> 
>     if (req.url ~ "\.(jpg|jpeg|png|gif|gz|tgz|bz2|tbz|mp3|ogg)$") {
> 
>       # No point in compressing these
> 
>       remove req.http.Accept-Encoding;
> 
>     } elsif (req.http.Accept-Encoding ~ "gzip") {
> 
>       set req.http.Accept-Encoding = "gzip";
> 
>     } elsif (req.http.Accept-Encoding ~ "deflate") {
> 
>       set req.http.Accept-Encoding = "deflate";
> 
>     } else {
> 
>       # unknown algorithm
> 
>       remove req.http.Accept-Encoding;
> 
>     }
> 
>   }
> 
> 
>   if (req.request == "PURGE") {
> 
>     if ( !client.ip ~ purge ) {
> 
>       error 405 "Not allowed.";
> 
>     }
> 
>     return (lookup);
> 
>   }
> 
> 
>   if (req.request != "GET" &&
> 
>     req.request != "HEAD" &&
> 
>     req.request != "PUT" &&
> 
>     req.request != "POST" &&
> 
>     req.request != "TRACE" &&
> 
>     req.request != "OPTIONS" &&
> 
>     req.request != "DELETE") {
> 
>       return (pipe);
> 
>   }
> 
> 
>   if (req.request != "GET" && req.request != "HEAD") {
> 
>     return (pass);
> 
>   }
> 
> 
>   if ( req.http.cookie ~ "wordpress_logged_in" ) {
> 
>     return(pass);
> 
>   }
> 
> 
>   if (
> 
>     !(req.url ~ "wp-(login|admin)")
> 
>     && !(req.url ~ "&preview=true" )
> 
>   ){
> 
>     unset req.http.cookie;
> 
>   }
> 
> 
>   if (req.http.Authorization || req.http.Cookie) {
> 
>     return (pass);
> 
>   }
> 
> 
>   if (
> 
>     req.url ~ "preview"
> 
>     || req.url ~ "nocache"
> 
>     || req.url ~ "\.css$"
> 
>     || req.url ~ "\.js$"
> 
>     || req.url ~ "\.jpg$"
> 
>     || req.url ~ "\.jpeg$"
> 
>     || req.url ~ "\.gif$"
> 
>     || req.url ~ "\.png$"
> 
>   ) {
> 
>     return (pass);
> 
>   }
> 
> 
>   return (lookup);
> 
> }
> 
> 
> sub vcl_hit {
> 
> 
>   if (req.request == "PURGE") {
> 
>     purge;
> 
>     error 200 "Purged.";
> 
>   }
> 
>   return (deliver);
> 
> }
> 
> 
> sub vcl_miss {
> 
>   if (req.request == "PURGE") {
> 
>     purge;
> 
>     error 200 "Purged.";
> 
>   }
> 
>   return (fetch);
> 
> }
> 
> 
> sub vcl_fetch {
> 
>   set beresp.http.Vary = "Accept-Encoding";
> 
> 
>   if (!(req.url ~ "wp-(login|admin)") && !req.http.cookie ~
> "wordpress_logged_in" ) {
> 
>     unset beresp.http.set-cookie;
> 
>     set beresp.ttl = 5m;
> 
>   }
> 
> 
>   if (beresp.ttl <= 0s ||
> 
>     beresp.http.Set-Cookie ||
> 
>     beresp.http.Vary == "*") {
> 
>       set beresp.ttl = 120 s;
> 
>       return (hit_for_pass);
> 
>   }
> 
> 
>   return (deliver);
> 
> 
> }
> 
> 
> sub vcl_hash {
> 
> 
> if (req.http.host) {
> 
>  hash_data(req.http.host);
> 
> } else {
> 
>  hash_data(server.ip);
> 
> }
> 
> }
> 
> 
> sub vcl_deliver {
> 
>   if (obj.hits > 0) {
> 
>     set resp.http.X-Cache = "HIT";
> 
>   } else {
> 
>     set resp.http.X-Cache = "MISS";
> 
>   }
> 
> }
> 
> =======================
> 
> Thanks for help,
> 
> 
> 	Fabio Fraga Machado
> phone: (48) 4052-8300 <http://up2it.com.br/assinatura/tel//4840528300>
> web: www.dataspace.com.br <http://www.dataspace.com.br/>
> email: fabio at dataspace.com.br <mailto:fabio at dataspace.com.br>
> skype: boinkbr
>   <https://facebook.com/dataspace.brasil><https://twitter.com/data_space>
> 
> 
> 
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