Debugger will not start without Glibc
The FusionReactor Debugger uses a native library to provide some of its features. The debugger native library requires GLIBC_2.14 to function.
Centos 6.x, Red Hat Enterprise Linux and other Linux systems don’t provide this version.
Example error messages
$ sudo bin/catalina.sh run Using CATALINA_BASE: /opt/apache-tomcat-8.0.3 Using CATALINA_HOME: /opt/apache-tomcat-8.0.3 Using CATALINA_TMPDIR: /opt/apache-tomcat-8.0.3/temp Using JRE_HOME: /usr Using CLASSPATH: /opt/apache-tomcat-8.0.3/bin/bootstrap.jar:/opt/apache-tomcat-8.0.3/bin/tomcat-juli.jar Error occurred during initialization of VM Could not find agent library /opt/fusionreactor/instance/tomcat8/libfrjvmti_x64.so in absolute path, with error: /lib64/libc.so.6: version `GLIBC_2.14' not found (required by /opt/fusionreactor/instance/tomcat8/libfrjvmti_x64.so)
On CF servers this error information is redirected to /dev/null so its never seen but you could be hitting this error.
To check the version of glibc on a linux system you can run one of the following:
# red hat / centos rpm -q glibc # debian / ubuntu dpkg -l libc6 # via ldd ldd --version
To work around we have build a libc.so6 version 2.14.1 for uses on Centos (64 bit only) which must be explicitly loaded via the LD_PRELOAD variable
In Tomcat you would set the following lines in the ‘setenv.sh’
export FR_OPTS="-javaagent:/opt/fusionreactor/instance/tomcat8/fusionreactor.jar=name=tomcat8,address=127.0.0.1:8088 -agentpath:/opt/fusionreactor/instance/tomcat8/libfrjvmti_x64.so" export JAVA_OPTS="$JAVA_OPTS $FR_OPTS" export LD_PRELOAD=/opt/fusionreactor/instance/tomcat8/libc.so.6
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