Graphing the ENVIROMUX-MINI Temperature Probe with Cacti

We use an ENVIROMUX-MINI to monitor temperature in the server room. This unit makes its data available over ethernet via SNMP. You can get the current temperature recorded by its probe with:


Cacti Segfaulting on CentOS5

I was getting Cacti set up and was having trouble with PHP. Specifically, it appeared that enabling the Cacti cron job caused a PHP segfault. I looked in /etc/cron.d/cacti to see what was being run:

cat /etc/cron.d/cacti
#*/5 * * * * cacti /usr/bin/php /usr/share/cacti/poller.php > /dev/null 2>&1

Then I ran it from the command line myself:

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