Fog Tweaks
Contents
Tweaks
- The following sections are devoted to strictly performance. If there are always pros and cons when tweaking to read carefully. All Pros/Cons should be added.
- ALL these Settings must be changed by the FOG User. If tested continuously and fully approved then these may make it into the Default Setup of fog.
- DO AT YOUR OWN RISK
- Pros description of the good
- Cons description of the bad
- PvC A rating scale of 1 to 10, 1 being the ALL Con and 10 being ALL Pro
- Dev. Approved One or multiple developers of Fog has approved this setting to be used in most installations of FOG.
Persistent DB Connection
- Use a Persistent DB Connection. This uses the already established connection to get the data, rather than reopening the socket or TCP link
- Open this file /var/www/fog/lib/fog/Config.class.php
- Go to line:
define('DATABASE_HOST', 'localhost');
- Change to:
define('DATABASE_HOST', 'p:127.0.0.1');
- Restart mysql:
service mysql restart
- Open this file /opt/fog/.fogsettings (so updates/upgrades to overwrite the settings above)
- Go to line:
snmysqlhost="";
- Change to:
snmysqlhost="p:127.0.0.1";
- If you DB is on another server, use p:[ipaddress of DB server].
PHP Session Purging
- Known bug in Ubuntu's config. It's running fuser for each PHP session file easily racking up thousands of processes.
- Look for and purge old sessions better
- Open this file /etc/cron.d/php5
- Go to line:
09,39 * * * * root [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -depth -mindepth 1 -maxdepth 1 -type f -cmin +$(/usr/lib/php5/maxlifetime) ! -execdir fuser -s {} 2>/dev/null \; -delete
- Change to:
09,39 * * * * root [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -depth -mindepth 1 -maxdepth 1 -type f -cmin +$(/usr/lib/php5/maxlifetime) -delete
- Restart apache
service apache2 restart
Updating Script
- For Beta and frequent updaters ONLY!
- In Fog v1.3.0-r2759+ the init's and kernels are downloaded at install thus "slowing" the install process.
- When doing constant updates a quicker means to update would be to copy the files you need.
- Step one make a backup of the original:
- Run this script:
- Ubuntu/Debian installs
sudo cp /var/www/fog/lib/fog/Config.class.php ~/Config.class.php #backup current config file. sudo rm -rf /var/www/fog.prev #removes the original previous folder if it exists. sudo mv /var/www/fog /var/www/fog.prev #moves the current into fog.prev for backup cd /loc/of/svn/folder/trunk; svn up #update the trunk to the latest sudo cp /loc/of/svn/folder/trunk/packages/web /var/www/fog #copy the new svn gui to the system. sudo chown -R www-data:www-data /var/www/fog; sudo chown -R fog:www-data /var/www/fog/service/ipxe; #change permissions to appropriate values. sudo cp ~/Config.class.php /var/www/fog/lib/fog/Config.class.php #copy back config
- RedHat installs
cp /var/www/html/fog/lib/fog/Config.class.php ~/Config.class.php #backup current config file. rm -rf /var/www/html/fog.prev #removes the original previous folder if it exists. mv /var/www/html/fog /var/www/html/fog.prev #moves the current into fog.prev for backup cd /loc/of/svn/folder/trunk; svn up #update the trunk to the latest cp /loc/of/svn/folder/trunk/packages/web /var/www/html/fog #copy the new svn gui to the system. chown -R apache:apache /var/www/html/fog; sudo -R fog:apache /var/www/html/fog/service/ipxe; #change permissions to appropriate values. cp ~/Config.class /var/www/html/fog/lib/fog/Config.class.php #copy back config
Results
Option | Pros | Cons | PvC | Dev. Approved |
---|---|---|---|---|
Persistent DB Connection | Speed in Web GUI response time | Connection is always open | 9 | ✔ |
PHP Session Purging | Purges Old sessions Better | None | 10 | ✔ |
Updating Script | Updates FOG without Kernels and init downloads | May not have most uptodate Kernels and init | 9 | ✔ |