iRule not working [redirect to different pool]

Are you saying when you go to abc.test.com you aren't getting pool DMZ_b_pool? Try putting the Hosts into quotes. Also, are you sure your HTTP::host doesn't have :80 or :443 possibly. You can try using "switch -glob [HTTP::host]" to account for that.

Yes I am not getting to pool DMZ_b_pool when I go to abc.test.com. I do have :80 and :443 VIP.

the irule looks okay to me.

i think it may be helpful if you can capture packet. if you do not do snat, tcpdump with client ip filter should be enough.

e.g.

 tcpdump -nni 0.0:nnn -s0 -w /var/tmp/output.pcap host x.x.x.x -v
x.x.x.x is client ip

As suggested by brad by putting the Hosts into quotes should resolve my problem ? e.g "switch -glob [HTTP::host]"

OR

when HTTP_REQUEST { "switch -glob [HTTP::host]" { test.com { pool DMZ_a_pool } abc.test.com { pool DMZ_b_pool } default { pool DMZ_a_pool} } }

i think Brad suggested something like this.

when HTTP_REQUEST { 
  switch -glob [HTTP::host] { 
    "test.com*" { pool DMZ_a_pool } 
    "abc.test.com*" { pool DMZ_b_pool } 
    default { pool DMZ_a_pool} 
  } 
}

i think Brad suggested something like this.

when HTTP_REQUEST { 
  switch -glob [HTTP::host] { 
    "test.com*" { pool DMZ_a_pool } 
    "abc.test.com*" { pool DMZ_b_pool } 
    default { pool DMZ_a_pool} 
  } 
}

Ok thanks.. Should I try this ?

I have to apply suggested iRule in our production environment that's why I am asking such questions so that chances of issue should be minimized.

Nitass,

I have tested the irule but no success : ( Please suggest

How about responding back with something to tell you what BIG-IP thinks the Host header is?

when HTTP_REQUEST {
  if {[HTTP::header exists "WTF"]} {
    HTTP::respond 200 content "HTTP host looks like [HTTP::host] \n" noserver Content-Type text/plain pragma no-cache
    TCP::close
    return
  }
  ... rest of your code ...
}

Then, use curl -H 'WTF: wtf' to get a response.