Hello everybody,
I encountered problem with session affinity in combination Apache httpd 2.2.21
and Tomcat 7.0.23.0. I have next directives in httpd.conf file:
<Proxy balancer://PRED_CL01>
BalancerMember ajp://smtt01:8023 route=PRED_TT01
BalancerMember ajp://smtt02:8023 route=PRED_TT02
</Proxy>
ProxyPass /pred/ balancer://PRED_CL01/pred/ lbmethod=bytraffic maxattempts=1
stickysession=jsessionid|JSESSIONID nofailover=off
And next directives in Tomcat server.xml file:
<Engine name="PRED" defaultHost="localhost" jvmRoute="PRED_TT01">
…
<Connector allowTrace="false"
backlog="16"
connectionTimeout="30000"
enableLookups="false"
keepAliveTimeout="30000"
maxPostSize="10485760"
maxSavePostSize="4096"
maxThreads="64"
port="8023"
protocol="AJP/1.3"
proxyName="testportal "
proxyPort="443"
redirectPort="443"
tcpNoDelay="true"
tomcatAuthentication="false"
URIEncoding="UTF-8"
useIPVHosts="false">
</Connector>
A also configured this LogFormat for Apache httpd:
LogFormat "%t %a %u %{jsessionid}C %{Set-Cookie}o %{BALANCER_SESSION_STICKY}e
%{BALANCER_SESSION_ROUTE}e %{BALANCER_WORKER_ROUTE}e %{BALANCER_ROUTE_CHANGED}e
%s %Tsec %r %Bbytes" access
I can see in Apache httpd log file for example these rows:
[21/Sep/2012:15:02:04 +0200] 10.217.116.41 -
AA716816AFEAF58F93B552B3503B9D14.PRED_TT02
JSESSIONID=7381C948FE38E0912A10B8FE8A3DF5EE.PRED_TT01; Path=/pred/; Secure;
HttpOnly - - PRED_TT01 1 200 4sec GET /pred/ HTTP/1.1 13081bytes
[21/Sep/2012:15:02:08 +0200] 10.217.116.41 -
7381C948FE38E0912A10B8FE8A3DF5EE.PRED_TT01 - - - PRED_TT02 1 200 0sec GET
/pred/styles/application.css HTTP/1.1 7574bytes
>From these you can see that variables BALANCER_SESSION_STICKY and
>BALANCER_SESSION_ROUTE are empty. Result is that user requests migrate between
>two Tomcat servers (PRED_TT01 and PRED_TT02).
Do you have anyone any idea where could be the cause of problem? Thank you very
much in advance.
Jarda F.
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