[ale] DNS

Brandon Colbert brandon at geekrus.net
Tue Sep 14 23:35:45 EDT 2004


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.
>
>  
>
>>_______________________________________________
>>Ale mailing list
>>Ale at ale.org
>>http://www.ale.org/mailman/listinfo/ale
>>
>>!DSPAM:4147b032211501528211405!
>>    
>>
>>------------------------------------------------------------------------
>>
>>_______________________________________________
>>Ale mailing list
>>Ale at ale.org
>>http://www.ale.org/mailman/listinfo/ale
>>
Thanks, I got it figured out.



More information about the Ale mailing list