If it is a mission critical system, check out http://www.linux-ha.org/
I have that managing a cluster of servers for HA SQL. In your case you may get away with just using a floating IP. Have the DNS pointing to that.
Then no matter what server the IP is on the DNS doesn't need to be updated. the fail over times in this type of setup are relativley low, maybe <1m depending on how you set it up ..
Another Idea anyway.
Darrin
2009/2/20 Per Qvindesland <per@xxxxxxxxxx>
Hi list,
I've two servers running the same ldap service. A is primary server and B is
simply a mirror, and accounts from server A are constantly synchronized with
B.
Now I don't have a automatic failover solution, whenever server A goes down,
I have to point the domain's A record to server B and wait for the DNS to
get updated. Takes quite a lot of time but the ldap service is crucial to
the system and shouldn't be down for longer than a few minutes.
I've heard about Dyndns? They provide automatic failover if one server does
down, what I want to know is if I can do the same using Bind? And if it's
possible to do it automatically? Without human intervention.
I don't want a round-robin solution, I want a automatic switchover if
primary box goes down.
Regards
Per Qvindesland
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Darrin Khan
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Bill Watterson - "There is not enough time to do all the nothing we want to do."
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