Timeout using Balancer, IHS, WebSphere and Birt

Question

I have an application that generates a report that process in more than 30min and I receive a timeout error. If I generate a report and it lasts less then 20 min, it works. My environment works as follow:

   Balancer https://www.example.com/
   /   \
IHS1   IHS2  redirect IHS:443 to WAS:9081 (WEB) and WAS:9082 (REPORT)
 /        \
WAS1     WAS2 WAS:WEB and WAS:REPORT
\         /
    DB

When I change my application to return data to WAS or IHS it works. If I return to balancer I receive a timeout. Here is my configutation on IHS:

ServerName   example.com
RewriteEngine on
RedirectMatch ^/$ https://example.com/example/

SSLEnable
SSLProtocolDisable    SSLv2
SSLProtocolDisable    SSLv3
SSLCipherSpec         TLS_RSA_WITH_AES_256_GCM_SHA384
SSLCipherSpec         TLS_RSA_WITH_AES_256_CBC_SHA256
SSLCipherSpec         TLS_RSA_WITH_AES_128_GCM_SHA256
SSLCipherSpec         TLS_RSA_WITH_AES_128_CBC_SHA256
SSLCipherSpec         TLS_RSA_WITH_AES_256_CBC_SHA
SSLCipherSpec         TLS_RSA_WITH_AES_128_CBC_SHA
SSLClientAuth         none
SSLServerCert         example-ssl
KeyFile               /opt/IBM/HTTPServer/ssl/example.kdb
SSLStashfile          /opt/IBM/HTTPServer/ssl/example.sth

ProxyPass           /example-rel/                             http://10.10.0.3:9082/example-rel/ connectiontimeout=7200 timeout=7200
ProxyPassReverse    /example-rel/                             http://10.10.0.3:9082/example-rel/

ProxyPass          /example/                              http://10.10.0.2:9081/example/ connectiontimeout=7200 timeout=7200
ProxyPassReverse   /example/                              http://10.10.0.2:9081/example/
ProxyPassReverseCookiePath  /    /example/

ErrorLog     logs/ihs-443-example-error_log
CustomLog    logs/ihs-443-example-access_log  common_ssl

I set timeout on webcontainer/ejb container/tranaction manager to 7200 and session management invalidationTimeout 120 min. I also set the HttpInboundPersistReadTimeout on the custom properties on WAS.

Did I forget to increase the timeout somewhere?

Answer 1

If using one of the load balancers that ships with WAS, look at the staletimeout setting.