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WordPress Varnish and Domain mapping plugin (8 posts)

  1. Tomas
    Member
    Posted 3 years ago #

    Hi, we have a Multi Site install with some blogs using the wpmudev domain mapping plugin. WP-varnish is not purging on updates for these blogs.
    I believe it's because they still have their original domain in wp-admin.

    So, an ordinary blog uses url: blog1.myblog.tld = purge works
    A custom blog uses url: mycustomblog.tld at the front-end but mycustomblog.myblog.tld in the back-end = purge does not work.

    What I wonder is if there's any way to have the plugin check if the blog uses a mapped domain, and if so, purge that url instead of the siteurl.

    If I change the siteurl settings for the ones using mapped domains all images paths gets broken.

    Hope I'm making sense :)

    http://wordpress.org/extend/plugins/wordpress-varnish/

  2. Tomas
    Member
    Posted 3 years ago #

    bump ;)
    still haven't found a solution/info/workaround

  3. Donncha O Caoimh
    Member
    Posted 3 years ago #

    Using my domain mapping plugin (here) I got this working, but it was because I use the blog's domain in the backend, not the site's domain.

    Unfortunately this sort of thing happens quite often.

  4. marikamitsos
    Member
    Posted 3 years ago #

    @ Donncha:
    I think I would need the exact same thing that Tomas mentions, but:

    I (by now) use the wpmu domain mapping plugin on a 3.2.1 multisite.
    I also, DO need to keep the Administration area to mapped domain.

    So I take it that there is NOT a SOLID solution for this? :(
    Are there any thoughts of upgrading this plugin. After all it says compatible till wordpress 2.9.2
    marikamitsos[at]gmail.therest...
    Thank you an advance. :)

    P.S. I've just started building a multisite and landed on this post after reading a few articles on what an amazing job Varnish does and "hopping" -trying to find the best caching plugin (w3 Total Cache vs. Super Cache. I know you are one of the developers of Super Cache and MU Domain Mapping, wow!!!)- from:
    ...(various posts)/
    Speed up WordPress with Apache and Varnish/
    varnish-cache.org/
    W3 Total Cache and Varnish/
    to here !!!

  5. Donncha O Caoimh
    Member
    Posted 3 years ago #

    There isn't a solid solution unfortunately. The domain mapping plugin (whichever one you use) needs a way to return the blog facing domain name. Then plugins need to build support for this.

    I noticed this happened with the WordPress.com stats plugin as shipped with Jetpack too so it has been on my mind for a while.

  6. Tomas
    Member
    Posted 3 years ago #

    There are more plugins/themes causing varnish issues aswell.
    i.e wordpress.com custom css and themes with background, style, header options etc. Changes are not shown instantly.
    The wp-varnish plugin only purges on new posts or comments or when the ttl is reached I believe

  7. ajaxmac
    Member
    Posted 3 years ago #

    Hi, I have a solution for the WPMU Domain Mapping and Varnish Purge plugin issues. The solution is to query the database table wp_domain_mapping from within the purging class. Get all mapped domains for the site, and put them in an array, then loop through the array running the purge commands.

    From (approximately) line 61 of varnish-purger-abstract.class.php insert the following code up to where you see the closing bracket before the line that says:

    function WPAuth($challenge, $secret) {

    Paste this code over the existing lines:
    (Note that wpv_host has become an array wpv_hosts)

    $wpv_wpurl = get_bloginfo('wpurl');
        $wpv_replace_wpurl = '/^http:\/\/([^\/]+)(.*)/i';
        $wpv_hosts[] = preg_replace($wpv_replace_wpurl, "$1", $wpv_wpurl);
        $wpv_blogaddr = preg_replace($wpv_replace_wpurl, "$2", $wpv_wpurl);
        $wpv_url = $wpv_blogaddr . $wpv_url;
    
    	/*
    	* WPMU Domain mapping edit by ajax@nuttify.com
    	*--------------------------------------------------
    	*/
    
    			//Are we a subdomain install?
    			global $switched;
    			switch_to_blog(1);
    			$tldomain = get_bloginfo('wpurl');
    			restore_current_blog();
    			$tld_host = preg_replace($wpv_replace_wpurl, "$1", $tldomain);
    			preg_match("/$tld_host/","$wpv_hosts[0]",$matches);
    
    			if ($matches) :
    				global $wpdb ;
    				$domains = $wpdb->get_results( $wpdb->prepare("SELECT * FROM wp_domain_mapping WHERE blog_id = %d", $wpdb->blogid) );
    				if ( is_array( $domains ) && !empty( $domains ) ) :
    					foreach( $domains as $details ) :
    						$wpv_hosts[] =$details->domain ;
    					endforeach;
    				endif;
    				reset($domains);
    			endif; // if ($matches)
    	if ( is_array( $wpv_hosts ) && !empty( $wpv_hosts ) ) :
    		foreach ( $wpv_hosts as $wpv_host ) :
    			for ($i = 0; $i < count ($wpv_purgeaddr); $i++) {
    			  $varnish_sock = fsockopen($wpv_purgeaddr[$i], $wpv_purgeport[$i], $errno, $errstr, $wpv_timeout);
    			  if (!$varnish_sock) {
    				error_log("wp-varnish error: $errstr ($errno)");
    				return;
    			  }
    
    			  if($wpv_use_adminport) {
    				$buf = fread($varnish_sock, 1024);
    				if(preg_match('/(\w+)\s+Authentication required./', $buf, &$matches)) {
    					 # get the secret
    					 $secret = "1beb871d-987a-4bbd-98aa-408e3de596cb";
    					 fwrite($varnish_sock, "auth " . $this->WPAuth($matches[1], $secret) . "\n");
    					 $buf = fread($varnish_sock, 1024);
    					 if(!preg_match('/^200/', $buf)) {
    					   error_log("wp-varnish error: authentication failed using admin port");
    					  fclose($varnish_sock);
    					  return;
    					}
    				}
    				$out = "purge req.url ~ ^$wpv_url && req.http.host == $wpv_host\n";
    			  } else {
    				$out = "PURGE $wpv_url HTTP/1.0\r\n";
    				$out .= "Host: $wpv_host\r\n";
    				if ($useragent != null){
    				   $out .= "User-Agent: $useragent\r\n";
    				}
    				$out .= "Connection: Close\r\n\r\n";
    			  }
    			  fwrite($varnish_sock, $out);
    			  fclose($varnish_sock);
    			}
    			// store url as purged
    			   $WPVarnishPurger_url_purged[]=$wpv_url.$useragent;
    		endforeach ;
    	endif ;
    
    	/*
    	* End WPMU Domain mapping edit
    	*--------------------------------------------------
    	*/

    After doing this and uploading it to my server I then tested on a few sites on my multi-site WP install with mapped domains. Updating a post from within the subdomain backend works to clear the mapped domain as well.
    Using the varnishlog command with a regex for purges, returns:

    $ varnishlog -I "purge"
    0 CLI - Rd purge req.url ~ ^/submit-your-meeting-experiences/ && req.http.host == deathtomeetings.brellabee.com
    0 CLI - Rd purge req.url ~ ^/submit-your-meeting-experiences/ && req.http.host == deathtomeetings.com
    0 CLI - Rd purge req.url ~ ^/ && req.http.host == deathtomeetings.brellabee.com
    0 CLI - Rd purge req.url ~ ^/ && req.http.host == deathtomeetings.com
    0 CLI - Rd purge req.url ~ ^/feed/ && req.http.host == deathtomeetings.brellabee.com
    0 CLI - Rd purge req.url ~ ^/feed/ && req.http.host == deathtomeetings.com
    0 CLI - Rd purge req.url ~ ^/feed/atom/ && req.http.host == deathtomeetings.brellabee.com
    0 CLI - Rd purge req.url ~ ^/feed/atom/ && req.http.host == deathtomeetings.com
    0 CLI - Rd purge req.url ~ ^/page/(.*) && req.http.host == deathtomeetings.brellabee.com
    0 CLI - Rd purge req.url ~ ^/page/(.*) && req.http.host == deathtomeetings.com
    0 CLI - Rd purge req.url ~ ^/date/2011/11/26/ && req.http.host == deathtomeetings.brellabee.com
    0 CLI - Rd purge req.url ~ ^/date/2011/11/26/ && req.http.host == deathtomeetings.com
    0 CLI - Rd purge req.url ~ ^/date/2011/11/ && req.http.host == deathtomeetings.brellabee.com
    0 CLI - Rd purge req.url ~ ^/date/2011/11/ && req.http.host == deathtomeetings.com
    0 CLI - Rd purge req.url ~ ^/date/2011/ && req.http.host == deathtomeetings.brellabee.com
    0 CLI - Rd purge req.url ~ ^/date/2011/ && req.http.host == deathtomeetings.com
    0 CLI - Rd purge req.url ~ ^/26/painful/9-autosave/ && req.http.host == deathtomeetings.brellabee.com
    0 CLI - Rd purge req.url ~ ^/26/painful/9-autosave/ && req.http.host == deathtomeetings.com
    0 CLI - Rd purge req.url ~ ^/date/2012/01/26/ && req.http.host == deathtomeetings.brellabee.com
    0 CLI - Rd purge req.url ~ ^/date/2012/01/26/ && req.http.host == deathtomeetings.com
    0 CLI - Rd purge req.url ~ ^/date/2012/01/ && req.http.host == deathtomeetings.brellabee.com
    0 CLI - Rd purge req.url ~ ^/date/2012/01/ && req.http.host == deathtomeetings.com
    0 CLI - Rd purge req.url ~ ^/date/2012/ && req.http.host == deathtomeetings.brellabee.com
    0 CLI - Rd purge req.url ~ ^/date/2012/ && req.http.host == deathtomeetings.com

  8. Tomas
    Member
    Posted 3 years ago #

    ajaxmac, this sounds great...but which varnish plugin are you using?
    I have no varnish-purger-abstract.class.php file in our wordpress-varnish plugin?

    Thanks!

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