@Rahul Borkar use the Ambari UI / APIs , Like "Advanced hadoop-env" from ambari. Added following lines of code, at the end of file # Add java-agent to get jmx metrics for prometheus agent_namenode=`echo $HADOOP_NAMENODE_OPTS | grep javaagent | wc -l ` if [ "$agent_namenode" == 0 ]; then export HADOOP_NAMENODE_OPTS="-Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.local.only=false -Dcom.sun.management.jmxremote.port=10010 -javaagent:/usr/hdp/2.3.4.0-3485/hadoop/lib/jmx_prometheus_javaagent-0.11.0.jar=9998:/usr/hdp/2.3.4.0-3485/hadoop/jmx_exporter/namenode.yaml $HADOOP_NAMENODE_OPTS" fi agent_datanode=`echo $HADOOP_DATANODE_OPTS | grep javaagent | wc -l ` if [ "$agent_datanode" == 0 ]; then export HADOOP_DATANODE_OPTS="-Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.local.only=false -Dcom.sun.management.jmxremote.port=10011 -javaagent:/usr/hdp/2.3.4.0-3485/hadoop/lib/jmx_prometheus_javaagent-0.11.0.jar=9999:/usr/hdp/2.3.4.0-3485/hadoop/jmx_exporter/datanode.yaml $HADOOP_DATANODE_OPTS" fi changed the permission of jmx_prometheus_javaagent-0.11.0.jar" and "namenode.yml" and "datanode.yaml" to "777" and put it into the right place. restart namenode and datanode at a time. you will get what you want ... View more