I don't know what's going on, this doesn't seem to work.
With this configuration the header gets changed:
backend test_servers
server 118 172.31.0.118:85 id 118
reqrep ^Host:\ 172.31.0.104 Host:\ 172.31.0.118
But once I add the IF, it breaks and the header does not get changed!
backend imp_servers
server 118 172.31.0.118:85 id 118
reqrep ^Host:\ 172.31.0.104 Host:\ 172.31.0.118 if { srv_id 118 }
What am I doing wrong?
Thanks
2011/8/11 Hervé COMMOWICK <hcommow...@exosec.fr>
> reqrep <yoursearch> <yourstring> if { srv_id <idofyourserver> }
>
> server's id can be forced with "id" keyword if needed
>
> Regards,
>
> Hervé.
>
> On Thu, 11 Aug 2011 13:22:36 +0300
> Ran S <r...@sheinberg.net> wrote:
>
> > Well, I have no idea if this mailing list is active, as I have gotten
> > no response, but I'll give it another try.
> >
> > I managed to change the Host header using ReqRep successfully.
> >
> > However, now I am in a state where one of the backends need this
> > change, and the other one doesn't.
> > How would I go about configuring this?
> >
> > If I put the two backends under one backend node, they both get the
> > ReqRep parameter, and then one of the servers can't work with the
> > replaced host header.
> > If I put them in two backend nodes, how can I get the frontend node to
> > balance between the two? this appears to be the correct way but I
> > can't find the right command.
> >
> > Thanks
> >
> > On Wed, Aug 10, 2011 at 5:00 PM, Ran S <r...@sheinberg.net> wrote:
> >
> > > Hello all,
> > >
> > > I am trying to use HAProxy for the following configuration:
> > > Two Linux servers (node1, node2) running apache (on port 85) and
> > > squid and acting as Proxy servers to the Internet
> > > I installed HAProxy on node1, and configured it to listen to port
> > > 80, and have the backends in their respective apache port 85.
> > >
> > > While node1 is the only active server in the backend servers list,
> > > I can make a request to node1:80 and it will be successfully
> > > redirected to the apache port and returned to me.
> > >
> > > However while node2 is the only active backend server, this flow
> > > will fail and I will simply get a blank page with HTTP 200.
> > > I think I know why that is. when sniffing on node1, I can see the
> > > following request flow:
> > >
> > > 1. My browser making web the request to node1:80
> > > 2. Node1 making the request to node2.
> > > But, this is where the problem comes in.
> > > The source IP is node1
> > > The Destination IP is node2
> > > However the Host in this request is the node1 IP address
> > >
> > > So, since node2 backend server is actually a proxy server, it will
> > > take the IP address from the Host header it received and make a
> > > request to node1 (since it has it in the request's Host header) and
> > > the failure will come in.
> > >
> > > So I guess what I'm asking is what would be the correct option to
> > > use in HAproxy in order to have this set up the right way.
> > >
> > > I copied the configuration file from one of the examples and
> > > trimmed it down to the very basic so I can eliminate anything
> > > that's causing the problems, so here it is:
> > >
> > > * global*
> > > * daemon*
> > > * maxconn 256*
> > > *
> > > *
> > > * defaults*
> > > * mode http*
> > > * timeout connect 5000ms*
> > > * timeout client 50000ms*
> > > * timeout server 50000ms*
> > > * balance roundrobin*
> > > * option forwardfor*
> > > *
> > > *
> > > * frontend http-in*
> > > * bind *:80*
> > > * default_backend servers*
> > > *
> > > *
> > > * backend servers*
> > > * server <node1name> <node1ip>:85*
> > >
> > >
> > > Many thanks in advance for any help! please let me know if you need
> > > any more information.
> > >
> > > Thanks,
> > > Ran
> > >
> > >
> > >
>
>
>
> --
> Hervé COMMOWICK, EXOSEC (http://www.exosec.fr/)
> ZAC des Metz - 3 Rue du petit robinson - 78350 JOUY EN JOSAS
> Tel: +33 1 30 67 60 65 - Fax: +33 1 75 43 40 70
> mailto:hcommow...@exosec.fr
>
