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Reverse DNS Failure

Posted: Wed Jan 26, 2022 9:35 am
by wneville
Hello,

In one of our servers we can nslookup x.x.x.x and get the DNS name resolved. However, in another server reverse DNS is not working. We need this to work in order to get host names from Autodiscovery jobs. Any idea why this may be working on one and not the other?

Cheers

Re: Reverse DNS Failure

Posted: Wed Jan 26, 2022 6:03 pm
by pbroste
Hello @wneville

Thanks for reaching out, the DNS server is responsible for name resolution, and recommend taking a look at the DNS server config/logs. Are you able to resolve this same server from any other on your network?

If the IP address on the server is static you can add the name/address to '/etc/hosts' so that your Nagios XI is able to resolve using the local config.

Thanks,
Perry

Re: Reverse DNS Failure

Posted: Thu Feb 17, 2022 12:00 pm
by wneville
Thanks Perry! All set on our end and you may close this. Apologies!

Re: Reverse DNS Failure

Posted: Fri Feb 18, 2022 11:34 am
by pbroste
Excellent @wneville, I will go ahead and lock this one up then.

Thanks,
Perry