brad_11480
Feb 07, 2011Nimbostratus
Standalone to HA active/passive pair - best practices?
I currently have a standalone LTM/ASM and want to make it high available so will be adding a second box.
Wondering if there is an established procedure to accomplish this. Would like to add it without interruption to the existing traffic, if possible. Otherwise with minimal disruption.
If so, I'd appreciate any references/information that are known. Hoping to make this as transparent and painless as possible.
I'm not sure the signficance of the VIP and IP's of each member box. From the perspective of the applications, they will see a slight change where the health polls will come from the member IP and the traffic from the VIP.
A question in this regard is what IP should become the VIP. Use the current IP of the standalone box, or leave the standalone box IP as is and make the VIP another IP on the subnet?
I know that I have to activiate the HA before I can make any of this work.
Right now the second box is basically configured and loaded with the same configuration as the existing standalone box (it could be swapped in as a replacement if that box failed). I can bring this up off-net and setup the HA information in it so that it can join up as a standby, if that is a good approach.
Thanks for any information.