Not able to add server in nagios and getting error

[HAL]

Hi Team,

There is one server which is beyond firewall and we have open 3 ports - 5666, 12489, 5667 and SSL port as well between server & Nagois server so we can try to add da certificate for server to monitoring and also we have install nagios client on server . But still we are getting error CRITICAL - Socket timeout after 10 seconds.

Kindly provide us solution so that we can server and certificate in monitoring .

Thanks and Regards,
Infosys

[tmcdonald]

• Which OS and agent is having this issue? It sounds like NRPE on a Linux machine.
• Are you running it standalone or through xinetd? Either way, did you include the Nagios IP in the list of allowed hosts?
• Do you have the firewall on the remote machine itself set to allow Nagios?

[HAL]

Hi Team,

We are using Windows 2008 R2 Server and we added nagios server also .Still can you guide us which port need to be open for nagios communication

[tgriep]

Can you post your check command you are trying to setup on the Nagios server to monitor your Windows 2008 server?

What agent did you install on your Windows Server?

[HAL]

Hi Team,

We are using NSClient++-0.3.9-x64 client in server 2008 R2 and using the IP address we have configured server in nagios but still we are getting error

[jwelch]

Google says the default NSClient++ port is 12489. I'd try telnet from the nagios server and locally on the
host to make sure it's listening and you can reach it from your nagios server.

http://assets.nagios.com/downloads/nagi ... ios-XI.pdf

[lmiltchev]

Make sure that NSClient++ service is started (running) on the Windows box, then run the following commands on the Nagios XI server and show us the output (hide sensitive info):

Code: Select all

nmap <client ip>
/usr/local/nagios/libexec/check_nt -H <client ip> -s <password> -p 12489 -v CLIENTVERSION
/usr/local/nagios/libexec/check_nrpe -H <client ip>

[sreinhardt]

Another one to check the ports specifically would be:

Code: Select all

nmap -p 5666,12489 [remote windows IP]

[HAL]

Hi,
As suggested, we tried telnet on server (to be added in Nagios) and got the following error:

...Could not open connection to the host, on port 23:
Connect failed

Please advise.

[tmcdonald]

I think the advice was to telnet to the appropriate port - using the default will use port 23 which is almost certainly not listening. Can you also follow lmiltchev and sreinhardt's advice on using nmap?