Nagios Support Forum

I set the debug level to 32, and the alert was finally triggered recently but it doesn't show ANY special characters at all in the log (and it doesn't show any different output in the log at all compared to when the debug level was on its default level). Have set it to "-1" (i.e. "Eve...

I have an issue similar to https://support.nagios.com/forum/viewtopic.php?f=7&t=25449&start=20similar%20issue%20to%20this with one service check I added recently only sending alert notifications as attachments in Nagios Core v3.x.x (old, I know). It's the first Windows log service check I've...

I’m looking for a way to monitor a server over an SSH tunnel due to the Nagios server not being able to connect to a server directly at all. The Nagios monitoring server can’t connect to serverB directly on any port. It CAN connect to the NRPE port (5666) on serverB via serverA using an SSH tunnel. ...

NRPE does not run commands in a shell (it uses popen), and subsequently cannot perform Bash substitution as you're attempting to do here: You're right. Removing that from the line helped make it work. Interstingly, although my original post doesn't have it, I used bash substitution for the log file...

I'm trying to get the check_log plugin working on a simple application log file that checks for multiple errors in a single line but the Status Information field in the Nagios dashboard only outputs "(1)" and not the line that triggered the CRITICAL alert when it correctly detects one of t...

I even tried compiling the source code version of the v2.3.3 release of nagios plugins on the CentOS server and using check_tcp from that but I get the same "NRPE: Unable to read output" response when the service check is executed from the Nagios monitoring server (again, the command line ...

Thanks for the reply. Yes, The Nagios monitoring server is using check_nrpe plugin (i.e not the “weird” option lol). The Debian and CentOS servers being monitored have their nrpe.cfg configured to use check_tcp. So to outline, the Nagios monitoring server has a service with a check_command line of: ...

Hi, I am trying to get a service check on an app running as a service with check_tcp. This is on a CentOS 7 server with nagios-plugins-2.3.3-2. I'm using "check_tcp -p <port # of service here> --refuse=warn" for the check_command. It returns "NRPE: Unable to read output" on the N...