Questions[vbulletin](server)

I have inherited a site (a vbulletin forum) and migrated it from another hosting to mine, by copying everything with scp command. The root directory had the following .htaccess

RewriteOptions inherit

RewriteEngine on
RewriteCond %{HTTP_HOST} ^.*$
RewriteRule ^/?$ "http\:\/\/example\.com\/forums\/content\/" [R=301,L]

I don't know how this was supposed to work, but it worked, regardless of the fact that the /forums/content/ folder did NOT exist. However, once moved to my hosting, it's stopped working, yielding a 404 error. Since the /forums/content.php file exists instead, I've edited the .htaccess like this:

RewriteOptions inherit

RewriteEngine on
RewriteCond %{HTTP_HOST} ^.*$
RewriteRule ^/?$ "http\:\/\/example\.com\/forums\/content.php" [R=301,L]

Now it's working, with a glitch: my browser (and every other forum user browser) is caching the previous 301 redirect, so I can reach and use the forum only if I clear the browser cache (once), or if I enter the content.php URL by hand (every time).

I've tried the workaround to add a redirect from /forums/content/ to /forums/content.php, by adding a RewriteRule to .htaccess:

RewriteOptions inherit

RewriteEngine on
RewriteCond %{HTTP_HOST} ^.*$
RewriteRule ^/forums/content/$ "http\:\/\/example\.com\/forums\/content.php" [R=301,L]
RewriteRule ^/?$ "http\:\/\/example\.com\/forums\/content.php" [R=301,L]

However it seems that rule is ignored, because the browser still gets a 404 error on the /forums/content/ directory and it does not redirect to content.php. What am I doing wrong?

CompassionPit.com is a Node.js app. The CompassionPit blog is WordPress and the CompassionPit forum is VBulletin. Everything was working fine and dandy until I installed the VBseo plugin for VBulletin, which wants me to add these lines to my nginx configuration:

    location /forum/ {
            rewrite ^/forum/((urllist|sitemap_).*\.(xml|txt)(\.gz)?)$ /forum/vbseo_sitemap/vbseo_getsitemap.php?sitemap=$1 last;
            try_files $uri $uri/ /forum/vbseo.php?$args;
    }

    location ~ /forum/(.*\.php)$ {
            rewrite ^/forum/(.*)$ /forum/vbseo.php last;
    }
    location /forum/vbseo/(includes|resources/html|resources/xml)/ {
            allow      127.0.0.1;
            deny      all;
    }

Here's the updated configuration file, including the 3 new blocks, which I placed at the bottom of the file.

server {
    listen       80;                # your server's public IP address
    server_name  www.compassionpit.com;
    index        index.php index.html;

    location ~ ^/$ {
        proxy_pass http://127.0.0.1:8000;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        break;
    }

    location @blogphp {
        internal;
        root /opt/blog;
        include fastcgi_params;
        fastcgi_param  SCRIPT_FILENAME  $document_root/index.php;
        fastcgi_index  index.php;
        fastcgi_pass   127.0.0.1:8080;
        break;
    }

    location ~ ^/(forum|blog)/($|.*\.php) {
        root /opt/;
        include fastcgi_params;
        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
        fastcgi_index  index.php;
        fastcgi_pass   127.0.0.1:8080;
        break;
    }

    location ~ ^/(blog|forum) {
        root /opt/;
        try_files $uri $uri/ @blogphp;
        break;
    }

    location ~ ^/(forum|blog|vbulletin)/ {
       root /opt/;
       break;
    }

    location @backend {
        internal;
        proxy_pass http://127.0.0.1:8000;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        break;
    }

    location ~ / {
        root /opt/chat/static/;
        try_files $uri $uri/ @backend;
        break;
    }




    location /forum/ {
            rewrite ^/forum/((urllist|sitemap_).*\.(xml|txt)(\.gz)?)$ /forum/vbseo_sitemap/vbseo_getsitemap.php?sitemap=$1 last;
            try_files $uri $uri/ /forum/vbseo.php?$args;
    }

    location ~ /forum/(.*\.php)$ {
            rewrite ^/forum/(.*)$ /forum/vbseo.php last;
    }
    location /forum/vbseo/(includes|resources/html|resources/xml)/ {
            allow      127.0.0.1;
            deny      all;
    }

}

You see, http://www.compassionpit.com/forum/general-discussion/ is getting served by WordPress.

Any suggestions for how I can condense the nginx file to integrate the VBSEO changes?

Thank you!

--Zachary

I have Memcached configured and setup to with work with vBulletin 4.1.5 on a Gentoo Linux 32-bit Linode VPS. Memcached is started, includes/config.php is configured to use the memcache, and the site does load and operate normally; however, Memcached does not appear to be caching, or at least caching very well. All services, Apache, MySQL, and Memcached run on the same server:

# for service in apache2 memcached mysql; do service $service status; done
 * status: started
 * status: started
 * status: started

See below the output of psmem showing low memory usage:

 $ psmem | grep memcached
     928.0 KB +   27.0 KB =  955.0 KB   memcached

Below, the includes/config.php section of the DataStore configuration:

$ grep DATASTORE config.php -A16
// ****** DATASTORE CACHE CONFIGURATION ***** 
// Here you can configure different methods for caching datastore items. 
// vB_Datastore_Filecache  - for using a cache file 
//$config['Datastore']['class'] = 'vB_Datastore_Filecache'; 
// vB_Datastore_Memcached - for using a Memcache server 
// It is also necessary to specify the hostname or IP address and the port the server is listening on

$config['Datastore']['class'] = 'vB_Datastore_Memcached'; 
$i = 0; 
// First Server 
$i++; 
$config['Misc']['memcacheserver'][$i]        = '127.0.0.1'; 
$config['Misc']['memcacheport'][$i]            = 11211; 
$config['Misc']['memcachepersistent'][$i]    = true; 
$config['Misc']['memcacheweight'][$i]        = 1; 
$config['Misc']['memcachetimeout'][$i]        = 1; 
$config['Misc']['memcacheretry_interval'][$i] = 15; 

The memcache.ini configuration in /etc/php/apache2-php5.3/ext-active/memcache.ini, which is a symlink to /etc/php/apache2-php5.3/ext/memcache.ini:

/etc/php/apache2-php5.3/ext-active $ cat memcache.ini 
extension=memcache.so
memcache.allow_failover=false
memcache.max_failover_attempts=20
memcache.chunk_size=32768
memcache.default_port=11211
memcache.hash_strategy=consistent
memcache.hash_function=crc32
memcache.redundancy=1
memcache.session_redundancy=2
memcache.protocol=ascii

And finally, the output of a Perl script written (not by me) to allow data to be passed to Cacti for graphing purposes, but can also be used manually:

$ perl memcached.pl localhost
total_items:898515 get_hits:20219203 uptime:3376080 cmd_get:23939667 time:1312170243 bytes:97280 curr_connections:35 connection_structures:55 bytes_written:102512934173 limit_maxbytes:67108864 cmd_set:1986754 curr_items:35 rusage_user:120.625662 get_misses:3720464 rusage_system:624.975989 bytes_read:3518914943 total_connections:28161

This last output makes it looks like it's caching but as posted earlier, it's not even using 1 MB of storage.

Am I missing anything? Anything else I should check? If there is nothing wrong with the Memcached or the related PHP extension configuration, then it must be a vBulletin issue, where in it is not actively using the cache in the manner it should.

Ideas? Questions? I've been trying to get this working for months.

Also ran and compared the Perl script against echo "stats" | nc -w 1 localhost 11211, as suggested:

$ perl memcached.pl localhost | cut -d" " -f1 ; awk -F"STAT " '/total_items/{print $2}' <(echo "stats" | nc -w 1 localhost 11211)
total_items:923792
total_items 923792

When I run a couple scripts from the vBulletin software (like uninstalling a plugin) it takes forever.

When monitoring the memory usage, it shows this =>

-/+ buffers/cache: 158 381 Swap: 255 10 245

It seems that MySQL is only using a certain amount and once it does it tries to use the swap instead?

I have a 512MB slice and right now my key buffer is at 16M and max_allowed_packet is at 16M.

Is there something else I should increase or can I increase those variables and still be safe?

Thanks.

I run a linode VPS with 512MB of memory and I was wondering if a PHP accelerator or PHp cache is a must have?

The point of the server is a vBulletin forum.

Which one would you recommend if so?