Hostname not IP address when scanning for hosts

General
1

Hi all,

I’m new to CheckMK, and I have created a folder and configured a network scan. The scan find hosts, but they all have hostnames with IP addresses. Why is that? I want hostnames and not IP addresses as hostnames. I thought CheckMK could resolve dns names.

Appreciate if someone can point me in the right direction.

Thank you in advance.

2

Checkmk is able to resolve names while network scanning if the DNS provides PTR records for the IP addresses.

3

Thanks :smiley: I have the DNS server in my Windows 2012 server, and created a PTR record for one host. However, the network scan still shows IP addreses.

Is there anything else I need to check? Restart CheckMK?

4

Have you removed the hosts from the network scan folder? Only then will checkmk recreate them on the next scan.

5

Yes, I have removed them. I think there is a issue with the DNS server, so I will check more into that.

6

Thanks for your help. I was able to fix the DNS server in the Windows 2012 R2, and after a new scan in checkmk, I now have hostnames and not just IP addresses :grinning: :+1:

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7

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