Nagios Support Forum

Hi.

Executing check_ncpa.py gives me this error:

kasper@gf:/usr/local/nagios/libexec$ ./check_ncpa.py -vvv -H webserver -t 'athome' 'cpu/percent'
Unable to parse json output
And error was encountered:
local variable 'rjson' referenced before assignment

I am pretty sure that there is not a variable initialization error as everyone else would suffer from the same issue.

I have checked that i have python-cjson and python-simplejson installed, do you have any other suggestions?

BR.

Kasper

What OS and version are you running this on? I know some repositories do not have the stock python-json so they use python-simplejson instead, and there might be some compatibility issues there.

I'm running this from ubuntu 12.04.4

I think theres a check in the top of the script, using simplejson if theres no json:
try:
import json
except:
import simplejson as json

If simplejson wasn't supported, it should be mentioned, and the script would'nt be made like this? (my opinion)

/Kasper

Well, I'm sure Nick wouldn't have put it in as an acceptable alternative to standard json, if it wouldn't work. But I will definitely check with him and try some testing of it.

Hi.

How do i get in contact with Nick?

/Kasper

You can post to the github issues page: https://www.github.com/nagiosenterprises/ncpa, otherwise once we see him, we will ask. He's got personal stuff this week.

Hi.
Just to let anyone who might be interested know, Scot contacted me by mail and suggested to get the newest version of the plugin, as the issue i had was from an old version.
I got the new version, and it works.
I got the first version from here: http://assets.nagios.com/downloads/ncpa/check_ncpa.py

/Kasper

Great! Thanks for posting back to let us know its resolved.