How to point to secondary server?

[bvc100x]

I got 2 servers! When the first server down, I want my nameserver automatic point to second server!!

How can i do that?

 

[Cstorms]

Need more details.

What are these servers, how do you have DNS setup currently? Internal queries? External? What type of DNS system are you going to be using?

Cory

 

[bvc100x]

normal name server!

cname, a something like that!

 

[bvc100x]

http://www.abc.com

point to abc.com - cname

abc.com point to 1.1.1.1 - a name

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i have secondary server name call 2.2.2.2

how to setup it?

 

[lgarner]

To do what you ask would require a monitoring system on the nameserver which would update the zone records dynamically. You'll also want a short TTL.

I'd use a loadbalancer, or simply round-robin DNS.

 

[elgrandeperro]

You can play DNS games, but I believe the results will be far from satisfying. Even with low TTLs, some ISPs ignore (yes) the TTL settings to get better performance, and cache things for longer periods.

I have found the Round Robin DNS games always seems to give poor response when a node is down.

The only 2 solutions I have worked with are to use a loadbalancer in active/active mode, or use some cluster technology so the servers are in active/standby mode.
I think one could use a reverse proxy, but that would make the reverse proxy a single point of failure.

eugene