Ok got it! many thanks! just had to give the id as an integer instead of a name (118), and use srv_id 118
On Thu, Aug 11, 2011 at 1:45 PM, Ran S <[email protected]> wrote: > Many thanks for your help! it seems that this is the correct way, but I get > a parsing error when checking the file in every possible syntax I could come > up with > > frontend http-in > bind 172.31.0.104:80 > default_backend test_servers > > backend test_servers > server 118 172.31.0.118:85 > reqirep ^Host:\ 172.31.0.104 Host:\ 172.31.0.118 if {srv_id > imp118} > server 104 172.31.0.104:85 > > Can you tell me the correct syntax? > > 2011/8/11 Hervé COMMOWICK <[email protected]> > >> 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 <[email protected]> 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 <[email protected]> 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:[email protected] >> > >
