Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

lorenze's avatar
lorenze
Icon for Altocumulus rankAltocumulus
Aug 10, 2020

Redirect multiple CNAME to a pool

Hello,   Just want to ask for your thoughts on what would be the quickest way to redirect multiple CNAME for our website to specific pool? For instance, we have cname1.site.com, cname2.site...
big-ip
irules
security
Simon_Blakely's avatar
Simon_Blakely
Icon for Employee rankEmployee
Aug 10, 2020

It will be easier to manage if you create a datagroup (type string) to hold the CNAMES, and match against the datagroup.

when HTTP_REQUEST {
# cname_dg is a datagroup of type string containing matching cnames
 
   if { [HTTP::host] equals cname_dg} {
     pool pool_name
   }
}
 
lorenze's avatar
lorenze
Icon for Altocumulus rankAltocumulus
Aug 10, 2020

 ,

 

Thanks for pointing that out. I haven't really think of it or if that is even possible. Quick question though, Does the string and value on creating DG needs to match or just adding the cnames as the string would be all good?

 

Thanks again , Really appreciate it