Thanks for that Rainer. How about when a new session comes in? Does mod_jk obtain information from each Tomcat about its current load, or does it base it on the number of requests that that particular instance of mod_jk has forwarded to Tomcat? If it's the latter, is this likely to cause problems?
Thanks Ian > -----Original Message----- > From: Rainer Jung [mailto:[EMAIL PROTECTED] > Sent: 21 June 2007 15:50 > To: Tomcat Users List > Subject: Re: Two IIS web servers > > Yes, this will work. The only bad thing will be, that the requests > belonging to one session will be logged partially on both of the IIS > instances, so if you try to debug a problem, you always need to look at > both IIS servers. > > Stickyness works like this: > > - you set a unique jvmRoute in the engine element of server.xml > - Tomcat appends the jvmRoute to each sessionid it generated, with a > dot > as a separator > - mod_jk load balancer looks for a session id whenever it receives a > request and strips of the routing string behind the dot > - if mod_jk finds such a routing strings, the load balancer searches > for > a worker with the same name or with a route attribute with the same > value and sends it there > > So mod_jk does not hold any state information about where which session > lies. Every request carries the information with it. > > Regards, > > Rainer > > Ian Buzer wrote: > > Hi, > > > > I currently have one IIS server balancing requests to two Tomcats > using JK > > 1.2. I am using JK to provide sticky sessions and all is working > well. > > > > I would like to be able share requests across a second IIS server, > however I > > am unable to create sticky sessions at the web server level so > requests > > could go to either web server. > > > > My question is, if I point both IIS servers to both Tomcats, will > this work > > correctly? Will the sessions still get directed to the correct > Tomcat, and > > will the two JKs still be able to choose the best worker for new > sessions? > > > > Many thanks > > Ian > > --------------------------------------------------------------------- > To start a new topic, e-mail: users@tomcat.apache.org > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
