If you are trying to enable JAVA plugin on Ubuntu platform and facing issues the following is something you can try to fix it.

• Since JAVA plug-in is not enabled by default, collectd need to be compiled from the code.

• Download the source code and configure collectd with the following options

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./configure --with-java=$JAVA_HOME JAVA_CPPFLAGS="-I$JAVA_HOME/include -I$JAVA_HOME/include/linux" JAVA_CFLAGS="-I$JAVA_HOME/include -I$JAVA_HOME/include/linux" JAVA_LDFLAGS="-I$JAVA_HOME/include -I$JAVA_HOME/include/linux" JAVA_LIBS="-I$JAVA_HOME/include" JAR="/path/to/jar" JAVAC="/path/to/javac" --enable-write_graphite --enable-java=force

Note: JAVA_HOME is something like /usr/lib/jvm/java-1.7.0-openjdk-amd64. Also without the option “force” for enable-java, configure will fail

• Once configure is complete, compile and install collectd

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make all install

collectd gets installed by default under /opt/collectd in Ubuntu

• Start collectd using the following command assuming that the PWD is /opt/collectd/sbin

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LD_PRELOAD=/usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/amd64/server/libjvm.so ./collectd

• Verify that collectd is running using “ps” command. If it is not running check the syslog by default located at /var/log/syslog.

• If there are no entries in syslog try starting the collectd process in the foreground which will write any errors on the console

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./collectd -f

Have fun with collectd and JMX stats collection!!