Sticky sessions and load balancing with apache 2

2003-11-21 Thread Drinkwater, GJ (Glen)

Hi

I can make the apache do load balancing, giving each server 50% of the
traffic.  When i try to create sticky sessions, it works, but only the first
tomcat instance gets all the traffic.

Is it possible to have sticky sessions with load balancing (with tomcat and
mod_jk2), ie if a user without a session comes in they go to tomcat1,
then the next instance  etc, but if a user comes in with a session id, it
goes to the tomcat instance that i was created on???

Glen


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Re: Sticky sessions and load balancing with apache 2

2003-11-21 Thread Antonio Fiol BonnĂ­n
Hello,

Please ensure that you are trying to create a fresh new session when 
testing.

I usually test load balancing by doing the following:

On every server:
tail -f 
a_log_file_that_fills_if_there_is_activity_such_as_catalina.out_or_access.log

On a client:
while true; do wget -O /dev/null 
http://apache_server/path/to/context/jsp/or/servlet; done

If you see activity on both logs, load balancing is OK. Never mind 
whether you use sticky sessions or not. You are sure that ALL requests 
are "fresh new" requests, with no session ID.

If you are using a browser, you have to ensure that you clean your 
cookies before each request, which is really embarrassing. Other than 
that, you can disable cookies on your browser, and repeatedly hit 
"reload" after clearing all cookies once.

HTH,

Antonio Fiol

Drinkwater, GJ (Glen) wrote:

Hi

I can make the apache do load balancing, giving each server 50% of the
traffic.  When i try to create sticky sessions, it works, but only the first
tomcat instance gets all the traffic.
Is it possible to have sticky sessions with load balancing (with tomcat and
mod_jk2), ie if a user without a session comes in they go to tomcat1,
then the next instance  etc, but if a user comes in with a session id, it
goes to the tomcat instance that i was created on???
Glen

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