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collectd [2012/08/09 09:53] (current)
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 +====== collectd ======
  
 +collectd is a daemon that gathers system processes, and generates RRD files.
 +
 +See also [[CGP]] for web statistics.
 +
 +==== Requirements ====
 +
 +  * rrdtool
 +  * apache web server with PHP support
 +  * A MySQL user that can excecute 'SHOW STATUS';​
 +  * .htaccess file to limit visibility
 +
 +==== CentOS ====
 +
 +Repository installs:
 +
 +<​code>​
 +yum install libpcap-devel
 +</​code>​
 +
 +Download and install manually:
 +
 +  * [[http://​oss.oetiker.ch/​rrdtool/​pub/​|rrdtool]] - use --prefix=/​usr
 +  * [[http://​collectd.org/​download.shtml#​source|collectd]] - use --prefix=/​usr then make all install
 +
 +== Startup ==
 +
 +Download and install the collectd init script.
 +
 +== Notes ==
 +
 +On one CentOS install, I was having trouble with collectd'​s rrdtool library linking correctly. ​ The fix that worked was to install rrdtool with a prefix of /usr.
 +
 +
 +==== Gentoo ====
 +
 +''​make.conf changes''​
 +
 +<​code>​COLLECTD_PLUGINS="​apache cpu disk iptables logfile mysql processes uptime users swap
 +syslog load conntrack interface memory netlink rrdtool tcpconns vmem df protocols sensors"</​code>​
 +
 +==== FreeBSD ====
 +
 +Located in ''/​usr/​ports/​net-mgmt/​collectd''​
 +
 +<​code>​
 +echo collectd_enable=YES >> /​etc/​rc.conf
 +mkdir /​var/​lib/​collectd
 +/​usr/​local/​etc/​rc.d/​collectd start
 +</​code>​
 +
 +==== MySQL ====
 +
 +Create a new user with proper privileges:
 +
 +<​code>​
 +CREATE USER '​collectd'​@'​localhost'​ IDENTIFIED BY '​password';​
 +GRANT SELECT, PROCESS, SHOW DATABASES, SUPER ON *.* TO '​collectd'​@'​localhost';​
 +FLUSH PRIVILEGES;
 +</​code>​
 +
 +
 +=== Notes ===
 +
 +Some plugins will not work on a VPS because you do not have direct access to the hardware.
 +
 +Once you start collectd, tail the system logs to make sure everything is okay.