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Changing IP addresses of 2008R2 SQL Cluster

Posted on 2014-07-21
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Last Modified: 2014-07-22
Hi

We are in the middle of a large re-IP project for all of our servers, which include several 2008R2 SQL two node clusters.  I'm wondering if there is a best practice for changing the IP addresses?

Our thoughts so far with changing the IP's in order:

passive node
active node
Windows cluster IP
SQL IP
DTC

Any recommendations?
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Question by:tonyjoewalker
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Philip Portnoy earned 2000 total points
ID: 40209709
Your plan looks OK.
Are IPs in the same subnet? Do you use separate heartbeats?

If you don't use separate HB interfaces, then make sure that Subnets successfully changed in Networks tab of Failover Cluster msc.
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by:tonyjoewalker
ID: 40211380
yes, the new IP's are all in the same subnet, but different from the current subnet.  We don't use heartbeat interfaces on any of our SQL clusters (don't ask).

Going forward we will have a few SQL 2005 and maybe one SQL 2000 cluster.  Any gotcha's with those?
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Expert Comment

by:Philip Portnoy
ID: 40212154
It all looks good, just change the IPs and make sure that DNS gets updated.
I'd recommend ipconfig /flushdns on each node after change for safety.
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Author Closing Comment

by:tonyjoewalker
ID: 40212271
thank you!
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