On 17 January 2013 12:24, James Bensley <[email protected]> wrote: > Howdy All, > > I wondered if anyone could entertain me with some ideas and thoughts > on being able to load balance all connections that pass through > HAProxy, perhaps by using more that one method, to "catch all" > connections (I have a single box set up in mind which is troubling > me). I have placed a snippet of the config below. We are inserting a > cooking to the request, either s1 for server1 or s2 for server2 so > that customers are having sticky sessions with the web servers. For > customers that don't support cookies, the servers redirect the user to > a different URL that carries the session ID in the URL all throughout > the session (an SSL session is terminated in front of HAProxy, so > HAProxy is HTTP only below).In the cookie-less scenario we would like > to use source IP based balancing; whilst this isn't the most even > distribution of traffic, it will be a minority of traffic. > > So, can I enable two balancing techniques? Is there a way of having > priority based balancing so cookies are preferred, failing that, > source IP?
>From the fine documentation: ----------------------- appsession [snip] When an application cookie is defined in a backend, HAProxy will check when the server sets such a cookie, and will store its value in a table, and associate it with the server's identifier. Up to <length> characters from the value will be retained. On each connection, haproxy will look for this cookie both in the "Cookie:" headers, and as a URL parameter (depending on the mode used). If a known value is found, the client will be directed to the server associated with this value. Otherwise, the load balancing algorithm is applied. ----------------------- The "otherwise" caveat sounds like what you're looking for. Jonathan -- Jonathan Matthews // Oxford, London, UK http://www.jpluscplusm.com/contact.html
