On Tuesday 24 November 2009 12:47:16 Onur Ağın wrote:
> Yes, the cookie is JSESSIONID,
> In the server response, Set-Cookie:JSESSIONID=xxxxx;path=xxx;
> I am using a tomcat 6.0 server.
The tomcat should reply:
Set-Cookie:JSESSIONID=xxxxx.TOMCAT1;path=xxx;
It lacks the . and the route to the tomcat.
Add this to the server.xml of the tomcat1:
<Engine name="Catalina" defaultHost="xxx.com" debug="0"
jvmRoute="TOMCAT1">
Best regards,
Nuno Fernandes
>
> On Tue, Nov 24, 2009 at 2:39 PM, Boyle Owen <Owen.Boyle@xxxxxxxxxxxxx>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:onuragin@xxxxxxxxx]
> > Sent: Tuesday, November 24, 2009 1:23 PM
> > To: users@xxxxxxxxxxxxxxxx
> > Subject: Re: 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.Boyle@xxxxxxxxxxxxx> 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.Boyle@xxxxxxxxxxxxx> 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:onuragin@xxxxxxxxx]
> > ? ? ? ? ? ? ? ?? ? ? ?Sent: Tuesday, November 24, 2009
> > 11:05 AM
> > ? ? ? ? ? ? ? ?? ? ? ?To: users@xxxxxxxxxxxxxxxx
> > ? ? ? ? ? ? ? ?? ? ? ?Subject: 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
> >
> >
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