How to disable APR in Tomcat when GridServer (GS) does not start on RHEL

How to disable APR in Tomcat when GridServer (GS) does not start on RHEL

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Article ID: KB0081407

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Updated On:

Products Versions
TIBCO DataSynapse GridServer 5.2.0

Description

GS 5.2 does not start on some versions of OS (for example, RHEL 6.9, etc) because the Tomcat APR library depends on GLIBC 2.14 and the latest supported version of GLIBC in RHEL 6.9 is 2.12. This can be resolved by disabling APR in Tomcat.

Issue/Introduction

This article highlights how to disable APR in Tomcat used as a webserver with GS

Resolution

Below are the steps for disabling APR in Tomcat webserver used with GS:-
  1. Open server.xml file located under /datasynapse/manager/conf directory
  2. Comment out the APR listener:                                                                                                                <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on"/>
  3. Restart the GS manager
  4. Upon restart, the catalina log should show the following which indicates that the NIO listener is being used: INFO: Initializing ProtocolHandler ["http-nio-8080"]                                                                                      INFO: Initializing ProtocolHandler ["http-nio-8000"]
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