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Monthly Archives: December 2010
Confixx http special entries
Confixx is a fairly popular Admin Panel in Germany to change certain settings in Confixx you can use an option called http special. Here are a few examples of values you may modify:
PHP Safe Mode (this is not recommended):
php_admin_flag safe_mode Off
PHP Memory Limit:
php_admin_value memory_limit 128M
PHP Max Execution Time / Max Input Time:
php_admin_value max_execution_time 120
php_admin_value max_input_time 120
PHP Max Upload Size / Max File Size
php_admin_value upload_max_file_size 32M
php_admin_value post_max_size 32M
PHP Open Basedir:
php_admin_value open_basedir /path/##user##
PHP Session Save Path:
php_admin_value session.save_path /path/##user##/phptmp
Confixx Mod Rewrite:
<Directory /var/www/##user##/html>
Options +FollowSymLinks +SymLinksIfOwnerMatch +Multiviews
</Directory>
Disable PHP functions:
php_admin_value disable_functions popen,escapeshellcmd,system,exec,passthru
The variable: ##user## will match your current user if you are changing settings for more that one user this is extremely helpful
Activate the write cache on a 3ware Raid controller
Without the write cache 3ware raid contollers can be painfuly slow. To activate the write cache do the following. First find the correct number of you raid controller. And also the unit that you would like to switch the cache on for.
tw_cli /c0 show
Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy
——————————————————————————
u0 RAID-1 OK – – – 153.385 – –
Port Status Unit Size Blocks Serial
—————————————————————
p0 OK u0 153.38 GB 321672960 WD-WCANM3649095
p1 OK u0 153.38 GB 321672960 WD-WCANM3649568
The command: tw_cli /c0 show gives you an overwiew of the first controller in the system. If you have more than one controller you can use c2 c3 and so on. Now we know that we have one raid controller and also one unit we can switch on the cache for it.
tw_cli set cache c0 u0 on
This command will switch on the write cache for the first controller 0 and unit 0. If you have more than one controller or units please repeat this step. Afterwards check that the cache has been activated:
server142:~# tw_cli /c0 show
Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy
——————————————————————————
u0 RAID-1 OK – – – 153.385 W –
Port Status Unit Size Blocks Serial
—————————————————————
p0 OK u0 153.38 GB 321672960 WD-WCANM3649095
p1 OK u0 153.38 GB 321672960 WD-WCANM3649568
Notice the W next to Cache thats it you have increased your write performance. Please remember that you can lose data if you activate the write cache without a battery backup unit. On a power loss you will lose the cached data. 3ware only produces battery backup units for the larger controllers 4 port and greater which sucks.