Tag Archives: php5

Cacti Pi – Optimized

After successfully installing Cacti on my RPi and letting it poll for a few cycles with the default local host device setup, it was apparent that it was a little sluggish. Nothing terribly bad, but obvious when compared to my other deployments, which is understandable considering RPi’s specs.

At first I considered perhaps I had made a mistake not going with lighttpd over apache2, however I quickly found another optimization option….


This tutorial includes some interesting info on reclaiming some RAM reserved for graphics processing…which RPi as a server really doesn’t require.

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Raspberry Pi setup

My Raspberry Pi setup (so far)

2 Raspberry Pi set up as headless servers in beautiful Built-To-Spec cases.

RPi 1
16GB Sandisk SD
Raspbian Wheezy 2012-07-15
Serving Cacti which is monitoring performance of both Pi

Rpi 2
16GB Kingston SD
Raspbian Wheezy 2012-08-16
Freshly installed and awaiting lighttpd install to compare against apache2

Future Projects:
Syslog server
Tftp server
Wordpress site host

Many others…



Cacti Pi – Correcting Cacti Timezone

Correcting Cacti Timezone

Battled a super annoying issue with what appeared to be Cacti not displaying graphs, which after half a day of messing around ended up being a timezone setting…..grrrrrrrrrrrr

After discovering Cacti was indeed graphing my expected values, just 4 hours ahead of my local time (EDT, America/Toronto) I realized cacti.log was showing UTC timestamps.

After confirming my Linux system time:

pi@raspberrypi ~ $ date
Fri Aug 17 04:39:13 EDT 2012

I dug around on cacti.net and found instructions on updating php.ini with timezone values:


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