collectd-python-iostat
collectd-python-iostat is a Python plugin for collectd that parse Linux iostat output and enable graphing in graphite or other output formats.
The plugin is based on information gleaned from deniszh's collectd-iostat-python but his project contains no actual code. This readme also contain information adapted from deniszh's project.
Status
The state of the plugin can be considered proof-of-concept. The code works for me, but needs some more work to become more mature and generic. As an example the config options are not really used for anything yet.
Setup
Deploy the collectd python plugin into a suitable plugin directory for your collectd instance.
Configure collectd's python plugin to execute the iostat plugin using a stanza similar to the following:
<LoadPlugin python>
Globals true
</LoadPlugin>
<Plugin python>
ModulePath "/usr/lib/collectd/plugins/python"
Import "collectd_iostat_python"
<Module collectd_iostat_python>
Path "/usr/bin/iostat"
Interval 10
Verbose False
</Module>
</Plugin>
Once functioning, the iostat data should then be visible via your various output plugins.
In the case of Graphite, collectd should be writing data to graphite in the hostname_domain_tld.iostat.DEVICE.gauge.column-name style.
Technical notes
For parsing iostat output I'm using jakamkon's python-iostat python module, but as internal part of script instead of separate module because of couple of fixes.