step by step guide to adding collectd plugins?

shivahoj · 1. April 2019

Hello, i have an OMV 4.1.16 / debian 9.7 running fine on an acer easystore H341 4-bay home server.
I cannot add any plugins from the long list of available plugins in /usr/lib/collectd/.
is there a working step by step guide in english, german, dutch or french, that i can follow for ping e.g.?

Specifcally i am interested in apcupsd/nut, sensors, smartd, df, and other hardware/environment tracking.
I have installed and used nagios and munin on other servers some time ago, but i think i am missing an important step.

BTW: I did a rather large rsync of filesets between local folders(this coincidence is possibly unrelated), now the "disk usage" tab is empty, no disks to select, no graphs shown. reboot did not help.
Any hints?

Yours

votdev · 1. April 2019

Most of the plugisn you listed are already managed by OMV. If you want to manually add additional collectd plugins please keep in mind that OMV is the master of the system and overrides your configuration if you do not do it the correct way. Please use the source to get more details.

https://github.com/openmediavault/openmediavault/blob/4.x/deb/openmediavault/usr/share/openmediavault/mkconf/collectd
https://github.com/openmediava…iavault/mkconf/collectd.d

shivahoj · 2. April 2019

First, Thank You for your swift answer!
So, since you do not mention a guide, i assume, there is none?
What i did already:
I added a file smartd.conf to /usr/lib/collectd/collectd.conf.d/, with the following content:

Code

LoadPlugin smart
<Plugin smart>
UseSerial true
</Plugin>

When i restart collectd via /etc/init.d/collectd restart, it fails, and my logfile is filled with:

Code

Apr  2 18:28:28 medien systemd[1]: Starting Statistics collection and monitoring daemon...
Apr  2 18:28:28 medien collectd[27864]: plugin_load: plugin "cpu" successfully loaded.
Apr  2 18:28:28 medien collectd[27864]: plugin_load: plugin "df" successfully loaded.
Apr  2 18:28:28 medien collectd[27864]: plugin_load: plugin "interface" successfully loaded.
Apr  2 18:28:28 medien collectd[27864]: plugin_load: plugin "load" successfully loaded.
Apr  2 18:28:28 medien collectd[27864]: plugin_load: plugin "memory" successfully loaded.
Apr  2 18:28:28 medien collectd[27864]: plugin_load: plugin "rrdcached" successfully loaded.
Apr  2 18:28:28 medien collectd[27864]: lt_dlopen ("/usr/lib/collectd/smart.so") failed: file not found. The most common cause for this problem is missing d
ependencies. Use ldd(1) to check the dependencies of the plugin / shared object.
Apr  2 18:28:28 medien collectd[27864]: plugin_load: Load plugin "smart" failed with status 1.
Apr  2 18:28:28 medien collectd[27864]: Found a configuration for the `smart' plugin, but the plugin isn't loaded or didn't register a configuration callbac
k.
Apr  2 18:28:28 medien collectd[27864]: Error: Reading the config file failed!
Apr  2 18:28:28 medien collectd[27864]: Read the syslog for details.
Apr  2 18:28:28 medien collectd[27864]: plugin_load: plugin "syslog" successfully loaded.
Apr  2 18:28:28 medien systemd[1]: collectd.service: Control process exited, code=exited status=1
Apr  2 18:28:28 medien collectd[27864]: plugin_load: plugin "unixsock" successfully loaded.
Apr  2 18:28:28 medien systemd[1]: Failed to start Statistics collection and monitoring daemon.
Apr  2 18:28:28 medien systemd[1]: collectd.service: Unit entered failed state.
Apr  2 18:28:28 medien systemd[1]: collectd.service: Failed with result 'exit-code'.

Alles anzeigen

I found a lot of already filled rrd files (like entropy, users, irq etc.) in the "datadir", /var/lib/collectd/rrd/$hostname.$myFQDN , how do i get them to be displayed , maybe under the Diagnostics-->System Information-->Performance Statistics panel, where all the other graphics reside?
I cannot find where generation of these data is initiated, at least not in /etc/collectd/collectd.d/. What config files are responsible for this, and where do they live?
How do i get the disk statistics graphics (the BTW: in my first post) to reappear?

votdev · 3. April 2019

To get the graphs displayed in the UI you have to write a plugin, use the openmediavault-diskstats as pattern.

step by step guide to adding collectd plugins?

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