On Thu, Sep 17, 2009 at 2:19 PM, Hank A. Paulson <h...@spamproof.nospammail.net> wrote: > > > On 9/17/09 1:17 PM, David Birdsong wrote: >> >> I'm having trouble with the syntax of the hdr* matching for creating >> ACL's. >> >> I know that my control flow is correct. by changing the acl >> defiinition to a simple src ip, i get the desired change of backends. >> >> ie. this will send traffic to img backends (desired) >> # acl from_vnsh hdr_sub -i nginx >> acl from_vnsh src 208.94.1.44 >> use_backend varnish if METH_GET ! from_vnsh >> default_backend img >> >> this will send it to varnish: >> acl from_vnsh hdr_sub -i nginx >> # acl from_vnsh src 208.94.1.44 >> use_backend varnish if METH_GET ! from_vnsh >> default_backend img > > I think the problem is you shouldn't have the METH_GET in there > use_backend varnish if ! from_vnsh > works for me oh, i thought there was an implicit AND when two expressions were put together...which i know is true for the src based acl. i only want GETs to go to this backend.
> >> >> >> furthermore, is there a way to match on a header field and not the >> field's value? >> i have a field: >> X-Varnish: 751121622 >> >> i want to create the acl simply based on X-Varnish being present >> irrespective of the value of this field. >> > > acl varn_present hdr_cnt(X-Varnish) gt 0 thanks i'll try this. > to be more clear, haproxy is to direct the first GET to varnish which in turn will send the request back through haproxy, this is where i want to direct the request to another backend.
