Hello,
First Thanks for your reply, Dan.
1. Yes, I am using apache2+mod_proxy in front of the two tomcats, here are the
configuration in httpd.conf:
ProxyPass /images/ !
ProxyPass /css/ !
ProxyPass /js/ !
ProxyPass /photo/ !
ProxyPass /icon/ !
ProxyPass /pg/ !
ProxyPass /job/ !
ProxyPass /maintenance/ !
ProxyRequests Off
<Proxy balancer://cluster/>
BalancerMember ajp://localhost:8009/ route=tomcat loadfactor=1
BalancerMember ajp://localhost:8010/ route=tomcat2 loadfactor=1
</Proxy>
ProxyPass / balancer://cluster/ stickysession=JSESSIONID nofailover=On
ProxyPassReverse / balancer://cluster/
2. I am not sure that whether the problem occurs on the same tomcat, because I
have no any idea to confirm that. Could you give me any tips to find it out?
This problem occurs occasionally, and I really don't know whether it is because
of the session duplication or tomcat session manager itself.
3. But one thing I am sure is that the two users use different PC to login,
which means that cookie is not the reason at all.
Any fellows have such a problem? This problem is so bad that it has dried me
and my visitors crazy, which is a big security problem!
Any advice is high appreciated!
Thanks in advance!
Weffen
在 2012-1-11，下午9:52， Daniel Mikusa 写道：
> On Wed, 2012-01-11 at 02:29 -0800, Weffen Cheung wrote:
>> Hello,
>>
>> I am using 2 tomcat(7.0.11) on my server, with clustering and session
>> duplication. All the things are running smoothy except the session problem
>> sometimes:
>>
>> 1. userA login, userB login
>
> Are userA and userB on the same TC instance?
>
>> 2. Sometimes when userB load a page, he found that he has became userA, it
>> means that userB's login session data has been replaced with userA. Don't
>> know why. Is it a bug?
>
> In most cases this occurs due to a session, request or response object
> being retained by a servlet. This is bad and can cause behaviors
> similar to the one you are reporting.
>
>> Anyone encounter the same problem??
>>
>> Any advice would be high appreciated!
>
> One other thought, what do you have in front of the two TC instances?
> Apache HTTPD with mod_proxy? or with mod_jk?
>
> Have you confirmed that the correct session id is being sent from the
> browser to your load balancer and then from the load balancer to your TC
> instance?
>
> Dan
--
Weffen Cheung
E: [email protected]
M: 13802222618
