check Availability before sending response

Ken DBA mysqld at
Wed Dec 3 14:53:43 UTC 2008


Is there any way to make Bind check the server's availability before send back responses to clients?

ie, given the domain name was pointed to and in Bind.
When a client query for, 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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