Yes, the cookie is JSESSIONID, In the server response, Set-Cookie:JSESSIONID=xxxxx;path=xxx; I am using a tomcat 6.0 server.
On Tue, Nov 24, 2009 at 2:39 PM, Boyle Owen <owen.bo...@six-group.com>wrote: > Forget the failover thing - Let's get back to your original problem > which is stickysession not working. > > Have you checked you have the session cookie in the request and that > it's called JSESSIONID? > Check http://httpd.apache.org/docs/2.2/mod/mod_proxy.html#proxypass for > details on how it is supposed to work. > > Rgds, > Owen Boyle > Disclaimer: Any disclaimer attached to this message may be ignored. > ________________________________ > > From: Onur Agin [mailto:onura...@gmail.com] > Sent: Tuesday, November 24, 2009 1:23 PM > To: users@httpd.apache.org > Subject: Re: [us...@httpd] Load balancer sticky session problem > > > What if I have a session clustering mechanism which works > asynchronously, so if host A fails, then the sessions will be replicated > to server B in several seconds, and if the session is sticky and request > is moved to B, only request that will come on that second will fail. But > if the load balancer is not sticky, it won't work since the sessions are > not replicated realtime > > On Tue, Nov 24, 2009 at 2:16 PM, Boyle Owen > <owen.bo...@six-group.com> wrote: > > > > > > > > ? ? ? "The downside is that if the desired server is > really down, the > request > > ? ? ? will eventually fail." > > > > ? ? ? I wouldn't want this, the reason why I am using > a load balancer > is to have high availability, > > not just to balance a load. > > > > ? ? ? How can I overcome this? > > ? ? ? Aren't there any alternatives? > > > > What do you imagine can happen? If you want sessions to > be sticky then > if a request has session ID that points to server-A, the > request *must* > go there. If server-A is unavailable, the request must > wait. > > Alternatively, you can allow failover and then the > request will go > straight to server-B, but then it has the wrong session > cookie. > > Session affinity and failover are mutually exclusive - > there is no way > round it. > > > > ? ? ? Also what does it mean to be busy? > > ? ? ? Currently I am using my pc to act as a load > balancer in front of > powerfull servers and there > > is only one page request, how can it be busy? > > > No idea. It's your server.. You posted that > stickysession wasn't working > and I posted back a possible explanation and something > to try (did you?) > Maybe it's not the problem - try it and see :-) > > > Rgds, > Owen Boyle > Disclaimer: Any disclaimer attached to this message may > be ignored. > > > > > ? ? ? ?On Tue, Nov 24, 2009 at 12:27 PM, Boyle Owen > <owen.bo...@six-group.com> wrote: > > > ? ? ? ? ? ? ? ?Try adding "nofailover=On" to the Proxy > tag, ie > > > ? ? ? ? ? ? ? ?<Proxy balancer://ow1 > stickysession=JSESSIONID > lbmethod=byrequests > > ? ? ? ? ? ? ? ?nofailover=On> > ? ? ? ? ? ? ? ?... > > ? ? ? ? ? ? ? ?By default, if the desired balancer > member is busy, the > request will be > ? ? ? ? ? ? ? ?routed to another one, even if the > stickysession doesn't > match (this is > ? ? ? ? ? ? ? ?"failover"). To force apache to hold the > request until > the server is > ? ? ? ? ? ? ? ?free again, you need to switch this off > by switching ON > "nofailover" (so > ? ? ? ? ? ? ? ?switching OFF "failover" - confusing, eh? > :-) > > ? ? ? ? ? ? ? ?The downside is that if the desired > server is really > down, the request > ? ? ? ? ? ? ? ?will eventually fail. > > ? ? ? ? ? ? ? ?Rgds, > ? ? ? ? ? ? ? ?Owen Boyle > ? ? ? ? ? ? ? ?Disclaimer: Any disclaimer attached to > this message may > be ignored. > > > > > ? ? ? ? ? ? ? ?________________________________ > > ? ? ? ? ? ? ? ?? ? ? ?From: Onur Agin > [mailto:onura...@gmail.com] > ? ? ? ? ? ? ? ?? ? ? ?Sent: Tuesday, November 24, 2009 > 11:05 AM > ? ? ? ? ? ? ? ?? ? ? ?To: users@httpd.apache.org > ? ? ? ? ? ? ? ?? ? ? ?Subject: [us...@httpd] Load > balancer sticky > session problem > > > > ? ? ? ? ? ? ? ?? ? ? ?Hi, > > ? ? ? ? ? ? ? ?? ? ? ?With the configuration below, > sticky sessions > won't work... > ? ? ? ? ? ? ? ?? ? ? ?I checked that both servers get > the request with > the same > ? ? ? ? ? ? ? ?session IDs. > ? ? ? ? ? ? ? ?? ? ? ?Any ideas? > > > ? ? ? ? ? ? ? ?? ? ? ?<VirtualHost *:8001> > ? ? ? ? ? ? ? ?? ? ? ?# Proxy > ? ? ? ? ? ? ? ?? ? ? ?ProxyRequests Off > ? ? ? ? ? ? ? ?? ? ? ?<Proxy *> > ? ? ? ? ? ? ? ?? ? ? ???Order deny,allow > ? ? ? ? ? ? ? ?? ? ? ???Allow from all > ? ? ? ? ? ? ? ?? ? ? ?</Proxy> > ? ? ? ? ? ? ? ?? ? ? ?<Proxy balancer://ow1 > stickysession=JSESSIONID > ? ? ? ? ? ? ? ?lbmethod=byrequests> > ? ? ? ? ? ? ? ?? ? ? ???BalancerMember > http://10.xxx:7101 > ? ? ? ? ? ? ? ?? ? ? ???BalancerMember > http://10.xxx:7102 > ? ? ? ? ? ? ? ?? ? ? ?</Proxy> > > ? ? ? ? ? ? ? ?? ? ? ?ProxyPass / balancer://ow1/ > ? ? ? ? ? ? ? ?? ? ? ?</VirtualHost> > > ? ? ? ? ? ? ? ?? ? ? ?<VirtualHost *:8002> > > ? ? ? ? ? ? ? ?? ? ? ?# Proxy > ? ? ? ? ? ? ? ?? ? ? ?ProxyRequests Off > ? ? ? ? ? ? ? ?? ? ? ?<Proxy *> > ? ? ? ? ? ? ? ?? ? ? ???Order deny,allow > ? ? ? ? ? ? ? ?? ? ? ???Allow from all > ? ? ? ? ? ? ? ?? ? ? ?</Proxy> > ? ? ? ? ? ? ? ?? ? ? ?<Proxy balancer://ow2 > stickysession=JSESSIONID > ? ? ? ? ? ? ? ?lbmethod=byrequests> > ? ? ? ? ? ? ? ?? ? ? ???BalancerMember > http://10.xxx:7103 > ? ? ? ? ? ? ? ?? ? ? ???BalancerMember > http://10.xxx:7104 > ? ? ? ? ? ? ? ?? ? ? ?</Proxy> > > ? ? ? ? ? ? ? ?? ? ? ?ProxyPass / balancer://ow2/ > ? ? ? ? ? ? ? ?? ? ? ?</VirtualHost> > > > ? ? ? ? ? ? ? ?? ? ? ?Also my request header is: > > ? ? ? ? ? ? ? ?? ? ? ?GET > > > /xxx/resources/org.apache.wicket.markup.html.WicketEventReference/wicket > ? ? ? ? ? ? ? > ?-event.js;jsessionid=76BF17CE24DB39AC8F6B3639BBA5727D > HTTP/1.1 > ? ? ? ? ? ? ? ?? ? ? ?Accept: */* > ? ? ? ? ? ? ? ?? ? ? ?Referer: > > > http://10.xxx:8001/xxx/?class=texan.acq.ui.param.MERPARAM > ? ? ? ? ? ? ? ?? ? ? ?Accept-Language: en-us > ? ? ? ? ? ? ? ?? ? ? ?Accept-Encoding: gzip, deflate > ? ? ? ? ? ? ? ?? ? ? ?User-Agent: Mozilla/4.0 > (compatible; MSIE 6.0; > Windows NT 5.1; > ? ? ? ? ? ? ? ?SV1; .NET CLR 2.0.50727; MS-RTC LM 8; > InfoPath.2) > ? ? ? ? ? ? ? ?? ? ? ?Host: 10.xxx:8001 > ? ? ? ? ? ? ? ?? ? ? ?Connection: Keep-Alive > ? ? ? ? ? ? ? ?? ? ? ?Cookie: > JSESSIONID=76BF17CE24DB39AC8F6B3639BBA5727D > > > ? ? ? ? ? ? ? ?This message is for the named person's > use only. It may > contain confidential, proprietary or legally privileged > information. If > you receive this message in error, please notify the > sender urgently and > then immediately delete the message and any copies of it > from your > system. Please also immediately destroy any hardcopies > of the message. > ? ? ? ? ? ? ? ?The sender's company reserves the right > to monitor all > e-mail communications through their networks. > > > > --------------------------------------------------------------------- > ? ? ? ? ? ? ? ?The official User-To-User support forum > of the Apache > HTTP Server Project. > ? ? ? ? ? ? ? ?See > <URL:http://httpd.apache.org/userslist.html> for > more info. > ? ? ? ? ? ? ? ?To unsubscribe, e-mail: > users-unsubscr...@httpd.apache.org > ? ? ? ? ? ? ? ?? " ? from the digest: > users-digest-unsubscr...@httpd.apache.org > ? ? ? ? ? ? ? ?For additional commands, e-mail: > users-h...@httpd.apache.org > > > > > > > --------------------------------------------------------------------- > The official User-To-User support forum of the Apache > HTTP Server Project. > See <URL:http://httpd.apache.org/userslist.html> for > more info. > To unsubscribe, e-mail: > users-unsubscr...@httpd.apache.org > ? " ? from the digest: > users-digest-unsubscr...@httpd.apache.org > For additional commands, e-mail: > users-h...@httpd.apache.org > > > > > > --------------------------------------------------------------------- > The official User-To-User support forum of the Apache HTTP Server Project. > See <URL:http://httpd.apache.org/userslist.html> for more info. > To unsubscribe, e-mail: users-unsubscr...@httpd.apache.org > " from the digest: users-digest-unsubscr...@httpd.apache.org > For additional commands, e-mail: users-h...@httpd.apache.org > >
