Forum Discussion
Dmitry_Sherman
Nimbostratus
Nimbostratus11.4 node/pool select according to domains list
Hello,
I need to perform node/pool selection according to big domains list.
I have a list of 500 domains that have to be routed to a specific node, all other domains should be routed to the second no...
I would add to Kevin Stewart's suggestion: Use an external data group, and use one datagroup for each class of domains. So if you are splitting into 2, one datagroup will contain 500 domains, the next datagroup will contain 500. Also use one pool for each class.
Use if-elseif expressions to match the classes as highlighted in Kevin's example.
Since you are matching domain names, you will need to match by HTTP::host, as that is independent of IP address.
Reference: Irules If and Expressions: https://devcentral.f5.com/articles/irules-101-02-if-and-expressions.UjG3LETK3Fg
- Kevin_Stewart
Employee
This is an interesting idea, but not sure what benefit it brings. The iRule would potentially have to parse two data groups to find a domain. 
Dmitry_ShermanCan you show an example please?- He wants domains in one list to go to one pool, and the next set to go to a different pool. Using two datagroups seems like the easiest way to do this.
