Nagios Support Forum

after configuration of my ubuntu host in nagios ubuntu server the status of client is showing down . but actually ping nmap everything showing fine .

I installed nagioscore from their official documentation and set up NRPE .
I also checked status of client and server everything is showing active and status of server is showing up .
But the client status of new spun ec2 ubuntu instance showing down . I tried it with every little knowledge I have .
pls help me .

Take a look at the host check service to see how it's defined. I typically use check_ping or check_icmp.
You should be able to run the check via the shell as the nagios user to test manually.