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I have a server that doesn't update resolv.conf correctly when networking is restarted. This is a red hat 7 server. It should use the nameservers from dhcp. I checked /var/lib/dhclient/dhclient--eth0.lease and there is a line option domain-name-servers which has the correct servers to use.

ifcfg-eth0 looks like this:

DEVICE=eth0 ONBOOT=yes BOOTPROTO=dhcp IPV6INIT=no MTU=1500 TYPE=Ethernet NM_CONTROLLED=no PERSISTENT_DHCLIENT=yes

Everything I've read suggests this should be simple and just work. I dont think network manager is a problem. I tried sudo systemctl stop NetworkManager and got a message saying the service is not loaded. I added PEERDNS=yes, which defaults to yes any way and made no difference. It's still overwritten with an empty file

$ cat /etc/resolv.conf options rotate timeout:1

I'm not sure what else I could check.

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This was due to a bug with redhat https://access.redhat.com/solutions/1433223

updated to the suggested package and my issue went away

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  • Glad to hear that you found a solution to the issue. Could you accept your answer so that your question no longer shows up in the list of unanswered questions? Thank you. Commented Oct 28, 2016 at 19:53
  • Yeah i tried. I got a message saying I need to wait 2 days Commented Oct 28, 2016 at 19:57

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