Unfortunately all user session is on midTier, so if the midTier goes down, there goes their user session, any failover to another midTier will require them to relogin to the midTier. UNLESS you enable session broadcasting on all the Tomcat Servers, this means that when a user logs into that MidTier which creates a servlet session then that session is broadcast to all the other Tomcat servers.
On Sep 21, 9:49 am, "Garrison, Sean (Norcross)" <[email protected]> wrote: > Just curious if anyone has done any configuration of an apache front end web > server for a back end mid-tier server. Our server environment requires a DMZ > so we are fronting our mid-tiers through apache servers. What we were not > able to figure out was how to load balance the connection from the mid-tier > to the apache without getting . Our end goal is this: > > Load Balancer1 > / | \ > / | \ > Apache 1 Apache2 Apache3 > \ | / > \ | / > Load Balancer 2 > / | \ > / | \ > MT1 MT2 MT3 > \ | / > \ | / > Load Balancer 3 > | > | > ARS Server Group > > Currently we have this: > > Load Balancer1 > / | \ > / | \ > Apache 1 Apache2 Apache3 > | | | > MT1 MT2 MT3 > \ | / > \ | / > Load Balancer 3 > | > | > ARS Server Group > > The reason we wish to move to this configuration is so that if a mid-tier > goes down the user's session does not get lost. In our current > configuration if we bring a mid-tier down for maintenance a user's session > must be re-established. > > There are several apache modules that handle sessions for you. So we were > wondering if anyone has tried any apache modules and got it to work like > that. Mod_tsession, mod_session, and mod_wl are some of the modules that > come to mind that may help but we have not tried them. I remember BMC told > us that we must have a one to one with apache to make this work (this was > told to engineering and don't really know all the reasons). I was wondering > if there have been any new developments or if anyone has gotten it to work > this way even though it may not be "Supported" by BMC. > > Our environment: > > Apache 2 front end web servers > Mid-Tier 7.5 patch 6 running on weblogic 10 > ARS 7.5 patch 6 > Oracle 10g > > Thanks, > > Sean > > _______________________________________________________________________________ > UNSUBSCRIBE or access ARSlist Archives atwww.arslist.org > attend wwrug11www.wwrug.comARSList: "Where the Answers Are" _______________________________________________________________________________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org attend wwrug11 www.wwrug.com ARSList: "Where the Answers Are"
