Re: question about load balance and forwardfor

On 07/02/08 12:51, Willy Tarreau wrote:
> you shouldn't rely on user-agent hashing for load balancing, because user-agent
> does not follow a good distribution.
>

OK. Then, how about source IP (or X-Forwarded-For) plus user-agent hashing?
> but it requires that we are able to specify which occurrence of the header
> we want to hash (and we need that for the ACLs too BTW). What I want to do
> is the following :
>
> - balance hdr(X-Forwarded-For,-1) => hash last occurrence
> - balance hdr(X-Forwarded-For,-2) => hash previous last occurrence
> - balance hdr(X-Forwarded-For,1) => hash first occurrence
>
> Same for ACLs.
>

Thanks.
Would you please enable multi-headers balance? Something like:

• balance hdr(Host,User-Agent,X-Forwarded-For,...) Then, life will be easier.
  > And later we will want to be able to extract the IP information from some
  > headers such as x-forwarded-for, so that IP ACLs apply on them with netmasks,
  > and that we can also use them as the parameter of "usesrc" in transparent mode.
  Wonderful!

I wish you and other guys would consider this feature request is necessary. We need this feature in our situation.

Thanks again, Willy.

-- 
Rgds,
Cherife.