why does resolv.conf change?
in [Debian]
|
From: Chris Davies on 18 Mar 2010 14:30 Clive McBarton <clivemcbarton(a)web.de> wrote: > My /etc/resolv.conf gets overwritten periodically. Any ideas why? Samba? DHCP? ppp? OpenVPN? vpnc? resolvconf entries in /etc/network/interfaces? 3G (UMTS) modem? Proprietary networking software? There are several possibilities. Sometimes taking a look at the symlink for /etc/resolv.conf, or its contents, can point one in the right direction. Chris -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/cj3a77x8d3.ln2(a)news.roaima.co.uk
From: Clive McBarton on 18 Mar 2010 17:10 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Camaleón wrote: > On Thu, 18 Mar 2010 16:53:20 +0100, Clive McBarton wrote: > >> My /etc/resolv.conf gets overwritten periodically. Any ideas why? > > Maybe because you are using a DHCP setup? Yes. > http://wiki.debian.org/NetworkConfiguration#Definingthe.28DNS.29Nameservers That explains how the resolvconf program and network-manager can change /etc/resolv.conf. But I carefully deinstalled resolvconf and network-manager. > The C library and other resolver libraries look to /etc/resolv.conf for a > list of nameservers. In the simplest case, that is the file to edit to > set the list of name servers. *But note that various other programs for > dynamic configuration will be happy to overwrite your settings:* > > 1. The resolvconf program > 2. The network-manager daemon > 3. DHCP clients I assume that means dhcpd. How do I stop it from changing resolv.conf? -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkuilpQACgkQ+VSRxYk4408jLQCfbWFv/upLvbRvJdVG8LYI1Dd4 TuQAnRdODQoZ2bdtFByULy9COK3TDqYP =3uRE -----END PGP SIGNATURE----- -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/4BA29694.2040106(a)web.de
From: Stephen Powell on 18 Mar 2010 17:20 On Thu, 18 Mar 2010 17:09:40 -0400 (EDT), Clive McBarton wrote: > I assume that means dhcpd. How do I stop it from changing resolv.conf? What kinds of changes do you see happening and what changes are you trying to prevent? What harm is being caused by those changes? In other words, what is the real world problem you are trying to solve? If you have your machine configured with a static IP address, for example, you won't need DHCP. For servers, that's the usual way to do it. User desktop machines normally use DHCP. -- .''`. Stephen Powell <zlinuxman(a)wowway.com> : :' : `. `'` `- -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/1033133589.20137991268947022847.JavaMail.root(a)md01.wow.synacor.com
From: Celejar on 18 Mar 2010 17:20 On Thu, 18 Mar 2010 22:09:40 +0100 Clive McBarton <clivemcbarton(a)web.de> wrote: .... > I assume that means dhcpd. How do I stop it from changing resolv.conf? I haven't been following the entire thread, but something on your system has to be running dhcpd. You can either tell it to not to, or you can configure dhcpd not to use the DNS servers it receives, using dhcp options like 'prepend' or 'supersede'. See 'man dhcp-options', and http://ubuntuforums.org/archive/index.php/t-544383.html Celejar -- foffl.sourceforge.net - Feeds OFFLine, an offline RSS/Atom aggregator mailmin.sourceforge.net - remote access via secure (OpenPGP) email ssuds.sourceforge.net - A Simple Sudoku Solver and Generator -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/20100318171811.4da3ca13.celejar(a)gmail.com
From: Clive McBarton on 18 Mar 2010 17:20
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 To make my original question more precise: I want the stuff I write into resolv.conf to persist, but it does not have to be in that file. I'm happy to write things elsewhere as long as *some place* makes my changes persistent. Sjoerd Hardeman wrote: > Therefore, dns settings should be set either via dhcp, in > /etc/networks/interfaces or via some user-leven config framework like > wicd or network-manager. So maybe I should actually *install* resolvconf or reinstall network-manager? In that case, I need help with where the new config goes. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkuil7UACgkQ+VSRxYk440/tjgCg3WQ5vMMkDDgQStu6Ytolua9g 6yoAnjbfG4wK1Dkd6iizF+oGa+iuN2Rx =ybV1 -----END PGP SIGNATURE----- -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/4BA297B5.3050105(a)web.de |