Post of the Week: HTTP Redirect using Datagroups

Hi,

 

Check ProxyPass (https://devcentral.f5.com/s/articles/proxypass-v10-v11), you will find good example of such feature.

 

Piotr

 

Sure

Can this works?

if [matchclass [HTTP::uri] equal REDIRECT] { set uri [matchclass -value [HTTP::uri] equals REDIRECT] HTTP::uri $uri pool MY_Pool }

Note:- example the data-group has entry , string:/x/y value:/z

REddy : some curly brackets are missing

you can use this code

if {[set [matchclass -value [HTTP::uri] equals REWRITE]] ne ""} {
    HTTP::uri $uri
    pool MY_Pool
}

Hi,

@Stanislass: Is it not advised to use

class match

matchclass

This code is good, but I still think that it is worth checking ProxyPass and use it as base to create iRule resolving not only URI modification but as well pool selection via Data Group.

Piotr

Your right, I did not see this!

URI rewriting is never a good idea, because one consequence is response rewriting may be required. And response rewriting is the worst configuration...

Well, I know your approach :-), still as fast remedy I had to work figure out how to create what I need based on ProxyPass - seem to be working quite OK at least at header and cookie rewriting for responses.

Piotr

Is it possible to reverse proxy a VS that is using a datagroup to redirect URL's? I don't want clients to proxy behind an F5 interface not access the URL directly. The VS is not using a default pool, the clients destination is in the datagroup.

For some reason the below irule not working, if {[class match $uri eq DATAGROUP]} { set new_uri [class match -value $old_uri eq DATAGROUP] HTTP::uri "$new_uri" pool $XYZ }

I need to verify the incomming uri checked against the Data-group before the value is assigned. Do i need to change it to set new_uri "[class match -value $old_uri eq DATAGROUP]" ?

Hi,

Assuming that you using

$uri

if

$old_uri

if ( [set new_uri [class match -value [HTTP::uri] eq DATAGROUP]] ne ""} {
  HTTP::uri "$new_uri"
  pool $XYZ
}

It is assuming that your DG is set like that: old_uri := new_uri

• old_uri - key name you use to match with DG
• new_uri - new URI that should be set if there is match on old_uri

Piotr