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snormoyle's avatar
snormoyle
Icon for Nimbostratus rankNimbostratus
Nov 27, 2020

data groups

my company engineering group created a solution using F5 as a S3 Proxy in AWS. The iRule supplied replaces the header with the s3 FQDN. I would like to use data group so when changes are required it can be done through the data groups and not the iRule itself. I don't understand enough about data groups to know if this is possible. this f5 will be hosting many different S3/proxy virtual servers which is another reason i would use thegeneric iRule for each new virtual server and reference the data group

 

Current iRule:

when HTTP_REQUEST { if { [HTTP::header host] eq "s3customer.domain.com" } { HTTP::header replace Host "s3customerdomain.s3.amazonaws.com" } }

 

Thinking about how to do the following.

when HTTP_REQUEST { if { [HTTP::header host] eq <original header> } { HTTP::header replace Host <replacement header> } }

application delivery
iRules
  • snormoyle's avatar
    snormoyle
    Icon for Nimbostratus rankNimbostratus
    Nov 27, 2020

    Thinking about how to do the following.

    when HTTP_REQUEST { if { [HTTP::header host] eq [data group]<original header> } { HTTP::header replace Host [data group]<replacement header> } }

     

    if can do within the same data group would be great.

  • mshoaib's avatar
    mshoaib
    Icon for Cirrus rankCirrus
    Nov 28, 2020

    Hi  

    Its very easy to achieve what you have asked ( or atleast what I understood .... 😅 )

    I have assumed the following for the data group

    name : hostmapping_dg

    contents :

    s3customer.domain.com := s3customerdomain.s3.amazonaws.com

    Please create a data group prior to using this iRule

    Here is the iRule that can do this. 

    when HTTP_REQUEST { 
 
set new_host [class search -value hostmapping_dg equals [HTTP::header host]]
 
if { ${new_host} != "" } { 
    HTTP::redirect $new_host 
    return
  }
}

    Thanks,

    Muhammad