Nagios Support Forum

nagios-retail , Custom variable macros are now being stripped of dangerous characters due to security concerns. In /usr/local/nagios/etc/nagios.cfg , there is the illegal_macro_output_chars config option, which determines which characters are stripped from macros. If you want to use a $ sign in cus...

Hello Polydipsia , After the plugins have been successfully added to the XI server, commands still need to be defined, just like in Core. In Configure -> Core Config Manager -> Commands, one can add new commands from those plugins and define them with the same syntax as Core configs. Here is some do...

Hi @m_sadu,

On what version of Debian are you installing this? The documentation has not yet been updated for Debian 12 or 13 and there might be some issues with packages.

Thanks,
- Emmett

Hi @soigan23,

I'm glad you found a fix, because NRPE sometimes has the vaguest error messages. Just for my notes, what did the old command definition for check_nrpe look like?

Thanks,
- Emmett

Hello soigan23 , I often see this error when there is an SSL mismatch and the handshake is unable to be completed. If the daemon is expecting SSL to be used and the plugin is used with the --no-ssl or -n flag, then this error is often the result. What is the result of the following command (if run f...

Hello dirhea , I was able to reproduce the error. The -c flag was likely swapped with -C , which is used to specify a client certificate. Double check your configs and make sure the check commands are defined like the following (with the lowercase c): define command { command_name check_nrpe command...

dirhea , The reason I ask is that the guide does not specify which compiler or SSL library to use, but since you are on Ubuntu, it's probably GCC and OpenSSL. Just to verify, will you run the following and let me know what it says. dpkg -l | grep libssl-dev dpkg -l | grep gcc Also, just to double c...

Hello @dirhea,

I am looking into reproducing this and I have a couple of questions.
- What compiler did you use?
- What SSL headers and libraries did you use?
- What distros are you using?

Thanks,
- Emmett

Hello nhood , 1.3.1 was a quick hotfix to fix some upstream packaging issues and doesn't include the fix that I gave you. With how XI's upgrades work, the fix in the PHP file was likely overwritten. Reapplying it should resolve the issue once again. I'm sorry for any inconvenience and please let me ...

Hello, When troubleshooting NRPE, it is often helpful to edit the NRPE config file and change debug=0 to debug=1. After restarting NRPE, this will add more debugging information to the log files. Unless otherwise specified in nrpe.cfg, any logs will be written to syslog. What version of NRPE is on t...