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書名： Cacti 0.8 Beginner's Guide
作者名： Thomas Urban
本章字?jǐn)?shù)： 220字
更新時(shí)間： 2021-04-09 21:42:00

Time for action – creating the poller's cron entry and Cacti's system account

To create a Cacti system user called cactiuser, issue the following command as root:
```
adduser cactiuser
```
Navigate to the cacti directory:
```
cd /var/www/html/cacti
```
Change the ownership of the rra and log directory to the newly created user:
```
chown –R cactiuser rra/ log/
```
Add the poller cron entry. Edit the file cacti in /etc/cron.d:
```
vi /etc/cron.d/cacti
```

Add the following line to the file:

*/5 * * * * cactiuser /usr/bin/php /var/www/html/cacti/poller.php > /dev/null 2>&1

Save the file.

What just happened?

You just created a system user which runs the Cacti poller and scheduled the poller to run every 5 minutes. Five minutes is the default interval, but it can be changed to 1 minute if needed. For more information on how to do so, go the following post in the Cacti forums: http://forums.cacti.net/viewtopic.php?p=116403.

Installing the Spine poller

By default, Cacti comes with a poller written in PHP. For small-to-medium installations, this poller does its job just fine, but for larger installations, an alternative poller, spine, needs to be used. It is written in C and is much faster than the original poller, as it makes use of the multi-tasking capabilities of modern operating systems and hardware.

Here we will deep-dive into installing and configuring the spine poller.

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Cacti 0.8 Beginner's Guide