I saw that bug #698 is on the roadmap for 1.3.5, nice. Another idea for that:
It would be a FINE idea to include a suffix in this cookie with a unique name for that node where sogod runs on. The suffix has to be separated by a dot (and no other dot must appear in the cookie): Example: Set-Cookie: 0xHIGHFLYxSOGo=r5hfjkrblvhjlvrjehjkgfhrkj4kl3hjgb4glbv.node01; Path=/SOGo/ In that case, you may write in the front end Apache (example from my setup) <Proxy balancer://sogocluster> BalancerMember http://10.0.0.2:20000/SOGo route=edea BalancerMember http://10.0.0.3:20000/SOGo route=bafoussam BalancerMember http://10.0.0.4:20000/SOGo route=kousseri BalancerMember http://10.0.0.5:20000/SOGo route=limbe RequestHeader set "x-webobjects-server-port" "443" RequestHeader set "x-webobjects-server-name" "sogo.uni-konstanz.de" RequestHeader set "x-webobjects-server-url" "https://sogo.uni-konstanz.de"; RequestHeader set "x-webobjects-server-protocol" "HTTP/1.0" RequestHeader set "x-webobjects-remote-host" "%{SENDER_IP_ADDRESS}e" AddDefaultCharset UTF-8 ProxySet stickysession=0xHIGHFLYxSOGo (1) Order allow,deny Allow from all </Proxy> The "route" parameter on "BalancerMember" names this particular worker route and the cookie's name mentioned with "stickysession=" is used to derive the route where the request has to be sent. AN idea would be to use one of these nifty dictionary variables of "defaults" (GNUstepdefaults), something like "defaults write sogod SOGoClusterNodeName bafoussam" (as an example). The user would be on the same machine after login eliminating all kind of synchronization issues and you still have a load balanced session. If one node breaks the apache uses another route or breaks the session, it is up to you to configure it. (1) In my actual setup I am doing this voodoo magic in my updated sogosession (not yet public) apache module with an additional cookie ("uniknsogoroute") with the value "worker.${nodename} which is set from inside the module to select the right worker. It works nicely here with 4 cluster nodes. So in my config there is in reality ProxySet stickysession=uniknsogoroute Pascal -- Pascal Gienger Jabber/XMPP/Mail: [email protected] University of Konstanz, IT Services Department ("Rechenzentrum") Electronic Communications and Web Services Building V, Room V404, Phone +49 7531 88 5048, Fax +49 7531 88 3739 -- [email protected] https://inverse.ca/sogo/lists
