Forum Discussion
Nimbostratus[iRule, URLSLB] How to change destination ip address(VIP).
I have been using the URI as below.
URI_1 : http://www.aaa.com, This IP(VIP) is "1.1.1.1". This VIP have two pool member(M1, M2).
URI_2 : http://www.bbb.com, This IP(VIP) is "2.2.2.2". This VIP have two pool member(M3, M4).
I want to do LB as below when client asks "http://www.aaa.com/test".
The destination ip address must be changed to "2.2.2.2". Therefore, traffic will flow into pool member(M3, M4).
The key here is that the destination ip address in header must be changed to 2.2.2.2.
I could change the pool using iRule, but I couldn't change the destination ip address(VIP).
Please show me how. or Do you know other methods?
2 Replies
afedden_1985Cirrus
Not sure why you would want to do that? Why don't you make a L7 decision on the URI and when you see /test/ send it to a pool with members M3 and M4) You can send to a virtual using a iRule (Vip to vip routing) but what your describing would be a better fit as a straight L7 load balance decision.
IheartF5_45022Nacreous
To answer your question as you asked it - assume you have.....
a virtual vs_www.aaa.com_http with pool pl_www.aaa.com_http, and a virtual vs_www.bbb.com_http with pool pl_www.bbb.com_http
when HTTP_REQUEST { This iRule is applied to vs_www.aaa.com_http if {[HTTP::path] eq "/test"} { Divert to other virtual virtual vs_www.bbb.com_http } }Note that once the destination is NATed to 2.2.2.2, sent to the 2nd VIP, and a pool member chosen, the destination address will again be NATed to either M3 or M4, so I'd agree with afedden that you are better off selecting the final pool directly from the first VIP ie
when HTTP_REQUEST { This iRule is applied to vs_www.aaa.com_http if {[HTTP::path] eq "/test"} { pool pl_www.bbb.com_http } }
