This is not the DNS job to check at the web service availability.
You could make an external script that is testing for the service availibility
and change the dns accordingly, like (...) :
web1 active ?
yes : was it active at last test ?
yes : do nothing
no : set www to point to web1 in DNS
no : was it already inactive ?
yes : do nothing
no : set www to point to web2 in DNS
and with having www/web1/web2 having a low TTL.
Philippe
________________________________
From: bind-users-boun...@lists.isc.org
[mailto:bind-users-boun...@lists.isc.org] On Behalf Of Mohammed Ejaz
Sent: Monday, April 27, 2009 8:11 AM
To: bind-users@lists.isc.org
Subject: Failover
Hi all,
Can it be possible through the bind, www records should work as failover, I
mean during the primary record unavailable and then it should go for next www
only, Pls. note that I don't want let they work as round robin function.
1. Primary www record pointing 1.2.3.4 as long as it is available it should
read from the same IP,
2. Secondary www record pointing 4.3.2.1 it should act only incase of primary
is down.
Ejaz
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