Trouble With check_time command

[rockxd]

Ok, on one of my hosts that I am monitoring, I have installed xinetd and followed your instructions. My Nagios client is still giving me the UNKNOWN status and the same error message however.

[tgriep]

On the server that you are checking, did you open up port 37 in the firewall?
Is the time service running on that host also?

[jdalrymple]

What do you get if you run the check manually?

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[jdalrymple@localhost libexec]$ /usr/local/nagios/libexec/check_time -H remotehost

Please note that the path to your plugin may differ from mine as shown above...

[rockxd]

I have not opened port 37 in the firewall. How would I go about doing that?

[jdalrymple]

I'm assuming this is NOT RHEL or CentOS7:

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iptables -A INPUT -p tcp --dport 37 -j ACCEPT

If it is a EL7 system:

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firewall-cmd --add-port=37/tcp --permanent
firewall-cmd --reload

[rockxd]

The EL7 commands didnt work. Ip tables command went through, but Nagios is still giving me the warning error message.

[jdalrymple]

Please post the output from the Nagios server:

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[jdalrymple@localhost libexec]$ /usr/local/nagios/libexec/check_time -H remotehost

As mentioned, your paths may differ from mine.

[rockxd]

I get the same message that Nagios gives me.

[abrist]

Can you run an nmap from the nagios server to see if port 37 is actually open?

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nmap -p 37 10.25.173.205

[rockxd]

I assume that I would have to download nmap software first?