When I add services-wrapper.py to Cron All Polling stops

Help
1

I have been screwing with setting up nagios plugins I followed this article

Service checks in LibreNMS

To do some basic http checking. Everything seems to work normally untill I get to adding the cron job

*/5  *    * * *   librenms    /opt/librenms/services-wrapper.py 1

After adding the line to the

/etc/cron.d/librenms

All of my polling stops.

There is nothing in the error or librenms log.
Thanks for your help.

2

What doc did you follow? That link didn’t seem to work.

3

https://raymii.org/s/tutorials/Service_checks_in_LibreNMS_nagios_plugins.html
This is the url.

4

Sounds like you made an error in your cron file.

5

Any Idea Where, this is my Cron file with the service commented out it is running normally with the line commented.

# Using this cron file requires an additional user on your system, please see install docs.

33  */6   * * *   librenms    /opt/librenms/discovery-wrapper.py 8 >> /dev/null 2>&1
*/5  *    * * *   librenms    /opt/librenms/discovery.php -h new >> /dev/null 2>&1
*/2  *    * * *   librenms    /opt/librenms/cronic /opt/librenms/poller-wrapper.py 16
15   0    * * *   librenms    /opt/librenms/daily.sh >> /dev/null 2>&1
*    *    * * *   librenms    /opt/librenms/alerts.php >> /dev/null 2>&1
# */5  *    * * *   librenms    /opt/librenms/html/plugins/Weathermap/map-poller.php >> /dev/null 2>&1
# */5  *    * * *   librenms    /opt/librenms/services-wrapper.py 1

Would the frequency need to match the poller-wrapper.py?

6

So in my cron file I moved the service-poller.ph under poller-wrapper.py and set the interval to 2 min and it seems to be working so far. Not sure why though.

# Using this cron file requires an additional user on your system, please see install docs.

33  */6   * * *   librenms    /opt/librenms/discovery-wrapper.py 8 >> /dev/null 2>&1
*/5  *    * * *   librenms    /opt/librenms/discovery.php -h new >> /dev/null 2>&1
*/2  *    * * *   librenms    /opt/librenms/cronic /opt/librenms/poller-wrapper.py 16
*/2  *    * * *   librenms    /opt/librenms/services-wrapper.py 8
15   0    * * *   librenms    /opt/librenms/daily.sh >> /dev/null 2>&1
*    *    * * *   librenms    /opt/librenms/alerts.php >> /dev/null 2>&1
# */5  *    * * *   librenms    /opt/librenms/html/plugins/Weathermap/map-poller.php >> /dev/null 2>&1
7

Any one know where to find Parameters for the nagios plugins?

8

Don’t change the cron to two minutes, you are wasting resources. The RRD files discard any data not on a 5 minute interval.

You can check monitoring plugin parameters by running them on the cli with the -h switch.

1 Like
9

I recommend you use this doc https://docs.librenms.org/Extensions/Services/

1 Like