Hi guys,
after weeks of investigation I have to ask you for help.
Problem Description:
The problem is that application is randomly (really non
deterministically) logging users out - they are working with
application, but suddenly (not all at one time) the user is logged out
(because mod_proxy is probably start routing the user to second Tomcat
server). We are using sticky sessions. Loadbalancer is running Apache +
mod_proxy. There are two servers in the backend running Tomcats.
Schematically:
client -> https at loadbalancer (Apache, mod_proxy) -> {tomcat server1,
tomcat server2}
Loadbalancer setting (apache.conf):
--snip--
ProxyRequests Off
ProxyStatus On
<Proxy *>
Order deny,allow
Allow from all
</Proxy>
RewriteEngine on
RewriteRule ^/$ /portal/ [R]
ProxyErrorOverride On
ProxyPass /portal/ balancer://productive/portal/
stickysession=ESPROUTEID nofailover=Off timeout=180
<Proxy balancer://productive>
BalancerMember ajp://1.1.1.1:8009 keepalive=On route=1
loadfactor=50 lbset=0 retry=30
BalancerMember ajp://1.1.1.2:8009 keepalive=On route=2
loadfactor=50 lbset=0 retry=30
</Proxy>
--snip--
Loadbalancer's Apache compile options:
$ ./configure --prefix=/var/GridFrame/usr/local/apache-2.2.21
--enable-proxy --enable-rewrite --enable-ssl --enable-vhost-alias
--with-mpm=worker --disable-cgi --disable-cgid --enable-proxy-http
--enable-proxy-ajp --enable-proxy-connect --enable-proxy-balancer
--enable-headers
Do you please have any hints/advice so users are not suddenly routed to
different Tomcat? Network between loadbalancer and Tomcats is stable.
Thank you a lot,
Vladimir
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