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I was trying to setup cacti on my ubuntu desktop to gather metrics from few new database servers we were planning to replace. Installed cacti using the following command

apt-get install cacti

Then the next step was to download and the install the cacti mysql templates from http://code.google.com/p/mysql-cacti-templates/. Thanks to Baron, was able to get this up and running fast using the templates. But had one problem though, while importing the mysql template “cacti_host_template_x_mysql_server_ht_0.8.6i-sver1.1.7.xml” cacti bombed with the below error

Fatal error: Allowed memory size of 16777216 bytes exhausted (tried to allocate 41 bytes) in /usr/share/cacti/site/lib/xml.php on line 32

The fix was to edit “/etc/php5/apache2/php.ini” change the parameter “memory_limit” from 16M to 32M and restart apache using the command “/etc/init.d/apache2 restart“. Now cacti was able to import the template without any issues.

While configuring cacti, by mistake selected apache instead of apache2 during the configuration and was not able to access the cacti ui. Ran the following command to reconfigure cacti.

dpkg-reconfigure cacti

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