load balancing...
Jie Gao
J.Gao at isu.usyd.edu.au
Mon Sep 18 23:01:57 UTC 2000
On Mon, 18 Sep 2000, arvind rao wrote:
> I am new to DNS admin and I need some help on load
> balancing.
>
> I need to setup one domain-name for 2 IP addresses
> such that if one of the machines are not up, it should
> automatically pick the other one.
> What I saw with having just 2 "A" record entries in
> the named.domain-name/IPnetwork file was that if I try
> to ping the "domain-name", it randomly picks one of
> the 2 IP'S and if it picks the IP address of the
> machine which is down, then it just doesnt
> automatically try the other machine. How do I set it
> up so that it identifies the other machine if one
> machine is down.
> Is there a way to set priority level????
Round-robin is not genuine load-balancing; it's just
something that can share some load.
It all very much depends on the client for this scheme. First time it
is obtained from a query, the result is cached by the client machine,
and very likely only the first A record is used by the client, although
more than one can be returned by the request.
Cheers,
Jie
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