Re: [Dnsmasq-discuss] Setting up dnsmasq on an [x]ubuntu machine - what's the 'right' way to do it?
On 10/05/14 17:07, Chris Green wrote: > On Sat, May 10, 2014 at 12:07:59PM +0100, Chris Green wrote: >> I've been using dnsmasq for quite a while on a small server machine on >> my home network but that machine is now redundant really and I'd like >> to save the electricity it's using. >> >> So I'm going to move dnsmasq to my desktop machine (which is also a >> server and is powered up all the time). My desktop machine runs >> xubuntu 14.04 so has the default resolvconf setup where the resolver >> runs a cut-down dnsmasq and /etc/resolv.conv just points to 127.0.0.1. >> >> What's the 'right' way to install a full dnsmasq onto my system and >> make it use /etc/dnsmasq.conf for configuration etc.? I know I had a >> fairly hard time sorting it out on the system where it is now and I >> want to make the process as painless as possible! :-) >> > Well I decided I could probably muddle through and I seem to have > managed it fairly OK, I have attached my summary of how to do it (as a > Dokuwiki text file, easy enough to read). Would it be useful to add > this to the FAQ, it's an issue that comes up quite a lot in various > forums. It would be good to put it somewhere. I'm not sure about the FAQ, which is fairly distrubution-agnostic. Let me think about that. > > It's not for the faint-hearted though, I'll make some comments here. > > >> Obviously I need to give my machine a static IP on my Lan, that's easy >> enough. >> > Yes, no need to set the DNS server(s) here, I don't think. > > >> At present there is dnsmasq-base installed (used by resolvconf), if I >> just install the dnsmasq package will it do the necessary so that >> it uses /etc/dnsmasq.conf etc.? >> > Yes, but you need to disable the NetworkManager dnsmasq by editing > /etc/NetworkManager/NetworkManager.conf to remove the dns=dnsmasq. > > >> Where do I specify the upstream DNS servers that dnsmasq should use? >> > In one or more files in /etc/NetworkManager/system-connections. > > >> Can I get dnsmasq to hand out a secondary/backup DNS server to DHCP >> clients so that if/when my desktop machine is turned off for upgrades >> or reboots it doesn't totally disable the other machines on the LAN? >> > I still want an answer to this one please. dhcp-option=option:dns-server,0.0.0.0, That sends two addresses as DNS servers in DHCP replies: 0.0.0.0 is replaced with the address of the machine running dnsmasq, and the second is the secondary. Cheers, Simon. ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
Re: [Dnsmasq-discuss] Setting up dnsmasq on an [x]ubuntu machine - what's the 'right' way to do it?
On Sat, May 10, 2014 at 12:07:59PM +0100, Chris Green wrote: > I've been using dnsmasq for quite a while on a small server machine on > my home network but that machine is now redundant really and I'd like > to save the electricity it's using. > > So I'm going to move dnsmasq to my desktop machine (which is also a > server and is powered up all the time). My desktop machine runs > xubuntu 14.04 so has the default resolvconf setup where the resolver > runs a cut-down dnsmasq and /etc/resolv.conv just points to 127.0.0.1. > > What's the 'right' way to install a full dnsmasq onto my system and > make it use /etc/dnsmasq.conf for configuration etc.? I know I had a > fairly hard time sorting it out on the system where it is now and I > want to make the process as painless as possible! :-) > Well I decided I could probably muddle through and I seem to have managed it fairly OK, I have attached my summary of how to do it (as a Dokuwiki text file, easy enough to read). Would it be useful to add this to the FAQ, it's an issue that comes up quite a lot in various forums. It's not for the faint-hearted though, I'll make some comments here. > Obviously I need to give my machine a static IP on my Lan, that's easy > enough. > Yes, no need to set the DNS server(s) here, I don't think. > At present there is dnsmasq-base installed (used by resolvconf), if I > just install the dnsmasq package will it do the necessary so that > it uses /etc/dnsmasq.conf etc.? > Yes, but you need to disable the NetworkManager dnsmasq by editing /etc/NetworkManager/NetworkManager.conf to remove the dns=dnsmasq. > Where do I specify the upstream DNS servers that dnsmasq should use? > In one or more files in /etc/NetworkManager/system-connections. > Can I get dnsmasq to hand out a secondary/backup DNS server to DHCP > clients so that if/when my desktop machine is turned off for upgrades > or reboots it doesn't totally disable the other machines on the LAN? > I still want an answer to this one please. -- Chris Green ==dnsmasq== To use a 'proper' dnsmasq instead of the dnsmasq-base package that provides local DNS and is run by NetworkManager the following steps are needed:- ==1 - Install the dnsmasq package== The dnsmasq-base package will already be installed bur you can't remove it because it's a dependency of NetworkManager, just leave it. ==2 - Change to a static IP== The simplest way to do this is simply to do it by clicking on the NetworkManager applet and set the IPV4 addressing to 'manual'. I don't think there's any need to set the DNS server IP here. ==3 - Edit the Network Manager configuration== In directory /etc/NetworkManager/system-connections there will be a file 'Wired connection 1', edit the dns line in this file to point to localhost plus real DNS servers:- dns=127.0.0.1;212.159.6.9;212.159.13.49; There may be more files in the same directory for WiFi connections, edit them in the same way (though I'm not sure that a DNS server connected by WiFi is a good idea). Edit the file /etc/NetworkManager/NetworkManager.conf, comment out the line dns=dnsmasq (or if you're feeling daring, delete it). ==4 - Set options as required in /etc/dnsmasq.conf== In particular DHCP isn't enabled in the supplied default configuration so at the very least you need to un-comment the dhcp-range line and check that it is correct for the LAN. ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
[Dnsmasq-discuss] Setting up dnsmasq on an [x]ubuntu machine - what's the 'right' way to do it?
I've been using dnsmasq for quite a while on a small server machine on my home network but that machine is now redundant really and I'd like to save the electricity it's using. So I'm going to move dnsmasq to my desktop machine (which is also a server and is powered up all the time). My desktop machine runs xubuntu 14.04 so has the default resolvconf setup where the resolver runs a cut-down dnsmasq and /etc/resolv.conv just points to 127.0.0.1. What's the 'right' way to install a full dnsmasq onto my system and make it use /etc/dnsmasq.conf for configuration etc.? I know I had a fairly hard time sorting it out on the system where it is now and I want to make the process as painless as possible! :-) Obviously I need to give my machine a static IP on my Lan, that's easy enough. At present there is dnsmasq-base installed (used by resolvconf), if I just install the dnsmasq package will it do the necessary so that it uses /etc/dnsmasq.conf etc.? Where do I specify the upstream DNS servers that dnsmasq should use? Can I get dnsmasq to hand out a secondary/backup DNS server to DHCP clients so that if/when my desktop machine is turned off for upgrades or reboots it doesn't totally disable the other machines on the LAN? -- Chris Green ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
