Hi I have a RHEL(Red Hat Enterprise Linux) instance in which I have Nagios Core-4.4.1 and NSCA installed and I have Riemann installed and configured which is sending events to NSCA.
But in the logs I see that when Riemann is sending events it is showing me External Command: Command Malformed and also External command failed and it shows an entry of that event in the log.
And do I need to define a service to process the passive check.
Any help would be really appreciated.