Nagios Support Forum

In my NgiosXI Installation I can see that no charts are working. We are using Nagios XI 2026 R1.1. Attached a screenshot:

What can I do to bring the charts back?

Hi,

I am sorry to hear that your graphs have stopped working. I'd like to refer you to this document for some troubleshooting steps regarding graphs:

https://library.nagios.com/docs/nagios- ... h-Problems

If nothing in this document seems to resolve the issue, I would suggest opening a ticket with Support. If you have any further questions or comments, please let us know!

Thanks,
Zach

I think the problem is the missing pnp4nagios package. I am using RedHat 8.10.

ls /usr/local/nagios/var/spool/perfdata/ | wc -l
returns 0 files.

ls /usr/local/nagios/var/spool/xidpe/ | wc -l
return 2 files

The Logfile /usr/local/nagios/var/perfdata.log is empty. When I execute
sudo -u nagios perl /usr/local/nrdp/plugins/Generic/process_perfdata.pl

then I got:
2024-08-07 14:45:55 [2117195] [0] *** process_perfdata.pl terminated on signal ALRM
2026-03-19 21:29:00 [870749] [1] process_perfdata.pl-0.6.11 starting in SYNC Mode
2026-03-19 21:29:00 [870749] [1] Cant find Nagios Environment. Exiting ....
2026-03-19 21:31:54 [873088] [1] process_perfdata.pl-0.6.11 starting in SYNC Mode
2026-03-19 21:31:54 [873088] [1] Cant find Nagios Environment. Exiting ....
2026-03-19 21:31:57 [873118] [1] process_perfdata.pl-0.6.11 starting in BULK Mode called by Nagios
2026-03-19 21:31:57 [873118] [1] ERROR: File ose not found
2026-03-19 21:31:57 [873118] [1] PNP exiting (runtime 0.00027s) ...
2026-03-19 21:32:02 [873215] [1] process_perfdata.pl-0.6.11 starting in SYNC Mode
2026-03-19 21:32:02 [873215] [1] Cant find Nagios Environment. Exiting ....

I just run the latest Nagios XI updatescript to have Nagios 2026R1.2, but still no luck.


My problem seem to be related to this:
https://github.com/NagiosEnterprises/na ... issues/904

I would like to test if setting the environment variables is solving the problem, how can I set them manually?

Hello @wagnbeu0!

I am curious about a couple of things, do you think you could share the current contents of process_perfdata.pl, as well as share the output of

systemctl status npcd
cat /usr/local/nagios/var/npcd.log

Thanks!

Another thing to test if you would like to try to figure it out yourself, you could try running
sudo -u nagios env \
NAGIOS_HOSTNAME=testhost \
NAGIOS_SERVICEDESC=testservice \
NAGIOS_SERVICEPERFDATA="time=0.1s;;;;" \
NAGIOS_SERVICECHECKCOMMAND=check_ping \
perl /usr/local/nrdp/plugins/Generic/process_perfdata.pl

and see what that does, otherwise, I would encourage opening a support ticket as they will have access to the appropriate resources to triage and gather more information