While I was doing a performance analysis of WSO2 Governance registry, I was looking for a way to monitor information of Apache Solr and its performance numbers. While reading "Apache Solr 3 Enterprise Search Server" book I found this very real time monitoring Tool(site) called New Relic.
So I was able to integrate New Relic with WSo2 Governance Registry Server and was able to monitor many information about the server instance. There I found that Java Agent Self Installer is not working for my scenario. So I had to set Java agent information into JAVA_OPTS. After Few minutes(around 2 min) I was able to view my server related information in the newrelic console(https://rpm.newrelic.com).
Here is the JAVA_OPTS which I have used:
export JAVA_OPTS="$JAVA_OPTS -javaagent:/home/chandana/Documents/g-reg/newrelic/newrelic.jar"
newrelic Java agent self-installer : https://docs.newrelic.com/docs/agents/java-agent/installation/java-agent-self-installer