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intermittent Service Temporarily unavailable / httpd proxy failures



Dell - Internal Use - Confidential

Hi,

 

I’m trying to work with OpenShift Enterprise 2.0. I have a simple Tomcat7 JSP-based app that talks to an embedded mysql DB. If I drive a bit of load to it, even if it is just from a single user with no think time, I portion of my requests will be answered with

 

               503 Service Temporarily Unavailable

 

The only problem I can find in the logs are in /var/log/httpd/error_log:

 

               [Tue Mar 25 15:51:13 2014] [error] (99)Cannot assign requested address: proxy: HTTP: attempt to connect to 127.8.162.129:8080 (*) failed

 

I confirmed that these errors only happen when 503’s are returned.

Some more details on stackoverflow:

 

               http://stackoverflow.com/questions/22645040/service-temporarily-unavailable-under-load-in-openshift-enterprise-2-0

 

I’m guessing that there is a knob somewhere I need to turn, but I can’t find it. Help is highly appreciated.

 

Randall Theobald

Common Engineering – Performance

Dell Software Group  |  Office of the CTO

randall_theobald at dell.com  |  RR1-C336

 


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