Problem with tomcat hanging on Shib 2.4

[Ted Fisher]

We've done a nearly identical migration two months ago for our test IDP and the first of this month for production.   We've gone from Solaris to everything exactly the same as yours with the exception of Java.  Due to warnings about OpenJDK we instead use java-1.6.0-sun-1.6.0.81-1jpp.1.el6_5.x86_64 which is available in the Redhat repo rhel-x86_64-server-6-thirdparty-oracle-java.

The production IDPs have been fine.  We have had two occurrence with the pair of test IDPs  in the eight weeks they've been in place that were similar to what you describe.  In both cases a Tomcat restart fixed it and we were never able to determine the cause - nothing logged anywhere, just a non-responsive hang.

Given the similarities of our environments I would be very interested in what you find and willing to share our findings.  Unexplained hangs are unnerving.

Ted F. Fisher
Information Technology Services
[Description: BGSU]

From: users-bounces at shibboleth.net [mailto:users-bounces at shibboleth.net] On Behalf Of John Kamminga
Sent: Thursday, August 28, 2014 7:49 PM
To: users at shibboleth.net
Subject: Problem with tomcat hanging on Shib 2.4

We've migrated our production Shibboleth environment from Solaris 10 to Redhat 6 and are now experiencing problems with the app becoming unresponsive every couple weeks. A tomcat reboot fixes it, but we'd like to find out what is causing it. Has anyone else experienced issue migrating to or running on Redhat 6?
Or, does anyone see any potential problems with our setup?

Here is our environment setup on a Redhat VM.
Redhat Linux version: 2.6.32-431.20.3.el6.x86_64

Shibboleth Idp 2.4

Tomcat  6.0.24
JAVA_OPTS=" -Xmx1024M -XX:MaxPermSize=512M -server -Djava.library.path=/usr/lib64 -Djavax.net.ssl.trustStore=/jdk/cacerts"

Java -version:
java version "1.7.0_55"
OpenJDK Runtime Environment (rhel-2.4.7.1.el6_5-x86_64 u55-b13)
OpenJDK 64-Bit Server VM (build 24.51-b03, mixed mode)

Thanks,
John Kamminga
Web Application Development
Information Technology Department
University of California, Merced
T: 209.228.2965<tel:209.228.2965>
E: jkamminga at ucmerced.edu<mailto:jkamminga at ucmerced.edu>
W: it.ucmerced.edu<http://it.ucmerced.edu/>

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