[CentOS] NetworkManager constantly overwriting /etc/resolve.conf - how to disable?

Rob Kampen rkampen at kampensonline.com
Sun Nov 29 21:43:45 UTC 2009

Rudi Ahlers wrote:
> Hi all,
> I have a CentOS 5.4 server-only installation, i.e. no X installed, and
> for some odd reason /etc/resolve.conf gets overwritten by
> NetworkManager on a constant basis. I haven't been able to track down
> how often, but I think it's on the hour, or something.
> This is the conents of the file right now:
> # Generated by NetworkManager
> # No nameservers found; try putting DNS servers into your
> # ifcfg files in /etc/sysconfig/network-scripts like so:
> #
> # DNS1=xxx.xxx.xxx.xxx
> # DNS2=xxx.xxx.xxx.xxx
> # DOMAIN=lab.foo.com bar.foo.com
> So, I change it to the following:
> nameserver, save it, and all network functions work
> fine. But, later on it get's changed again. Running
> "system-config-network", I can see that the nameserver that I have
> specified is in there, yet it doesn't show up in /etc/resolve.conf.
> I have searched a bit on google, but all the results reveal how to use
> NetworkManager to setup the nameservers, but now how it get's set
> automatically. Why does this happen, and how do I stop it from
> happening?
As I recall there was a thread about this a few weeks ago.
Please show your /etc/sysconfig/network-scripts/ifcfg-ethX contents.

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