[ale] DNS

[Jeff Hubbs]

Just a minor correction - that's /etc/resolv.conf (no "e").

- Jeff

On Tue, 2004-09-14 at 23:11, James P. Kinney III wrote:
> On Tue, 2004-09-14 at 22:55, Brandon Colbert wrote:
> > I want to be able to setup a redundant Internet connection using two 
> > isp. If one link goes down, I want to be able to access the webserver 
> > via other link. I know I am going to have to setup ip alias, but how do 
> > I setup the round robin DNS or is there an another way to handle this.
> You'll need to have primary and secondary resolv.conf files. Most ISP's
> don't care if you use a dns that is not theirs, but it may make things
> slow.
> 
> At any rate, make sure your ISP's are locked to a specific ethernet
> card. Now you can use iptable/ipchains to route a specific ISP's DNS
> server requests out a specific ethernet card. The reason for the dual
> resolve.conf files is so when one goes down (call it the primary dns)
> you can script a ping test of the upstream gateway for each node and
> reset a link to /etc/resolve.conf based on which ISP node has died. Make
> the last entry in each file a DNS server from the other ISP so current
> queries can still get handled if the node dies during a DNS request.
> 
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