check Availability before sending response
jw354 at cornell.edu
Wed Dec 3 23:16:01 UTC 2008
3DNSs sold because this is a messy function, that needs to know details
of whichever application protocol
your setup uses. I would think someone has developed an open-source
bind add-on to do it, but I don't
know any off-hand.
Given a specific simple situation and specific server failure modes to
be covered, there are probably a
million people who could write a script using normal unix tools to
carry out the function and load the
data into bind.
On Dec 3, 2008, at 9:53 AM, Ken DBA wrote:
> Is there any way to make Bind check the server's availability before
> send back responses to clients?
> ie, given the domain name www.site.com was pointed to 126.96.36.199 and
> 188.8.131.52 in Bind.
> When a client query for www.site.com, Bind will check the health
> status for these two servers. If one is unavailable,Bind shouldn't
> direct client's requests to it.
> I know F5's 3DNS can do it well.But rather than 3DNS, is there any
> free way for this purpose? Thanks.
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