Nagios Support Forum

I recently upgraded to Nagios 4.0.1 from Nagios 3.5.0 and started getting service check output as(No output on stdout) stderr:[ i.e., plugin_output = (No output on stdout) stderr:]. And, I also started observing that there are lot of zombie process getting created for Perl and sometimes for Nagios when you reload not if you restart. And, also there is a loss of performance data being updated(integrated pnp4nagios), I can see the following error in the Nagios log file:

[1381928212] wproc: SERVICE PERFDATA job 13 from worker Core Worker 8077 is a non-check helper but exited with return code 2
[1381928212] wproc: command: /usr/bin/perl /usr/local/pnp4nagios/libexec/process_perfdata.pl
[1381928212] wproc: early_timeout=0; exited_ok=1; wait_status=512; error_code=0;
[1381928212] Worker 8077: Unknown jobtype: 10
[1381928212] wproc: Unknown job type: 10

I think the worker is not capable of handling perl related code to return back to Nagios core or parent (FYI I am not using embedded perl). Any help is much appreciated.
Thanks for your time.

Note: The return status from the plug-in is OK but it is unable to read the output from Standard Output or Standard Error of the Shell (it's intermittent).

Regards,
Babu Dhinakaran S

It is not an issue with perl, but actually something to do with how core is handling the data. There is already a tracker issue posted for this bug. As there is nothing presently we can do I am going to lock this. Please feel free to add comments to the tracker issue found below: http://tracker.nagios.org/view.php?id=484