JMX 监控 Hadoop

1. 配置所有节点的$HADOOP_HOME/conf/hadoop-env.sh 文件

exportHADOOP_HOME=/opt/hadoop-1.0.0

exportHADOOP_NAMENODE_OPTS="-Dcom.sun.management.jmxremote.port=9191-Dcom.sun.management.jmxremote.ssl=false-Dcom.sun.management.jmxremote.authenticate=true-Dcom.sun.management.jmxremote.password.file=$HADOOP_HOME/conf/jmxremote.password-Dcom.sun.management.jmxremote.access.file=$HADOOP_HOME/conf/jmxremote.access $HADOOP_NAMENODE_OPTS"

exportHADOOP_DATANODE_OPTS="-Dcom.sun.management.jmxremote.port=9292-Dcom.sun.management.jmxremote.ssl=false-Dcom.sun.management.jmxremote.authenticate=true-Dcom.sun.management.jmxremote.password.file=$HADOOP_HOME/conf/jmxremote.password-Dcom.sun.management.jmxremote.access.file=$HADOOP_HOME/conf/jmxremote.access $HADOOP_DATANODE_OPTS"

exportHADOOP_JOBTRACKER_OPTS="-Dcom.sun.management.jmxremote.port=9393-Dcom.sun.management.jmxremote.ssl=false-Dcom.sun.management.jmxremote.authenticate=true-Dcom.sun.management.jmxremote.password.file=$HADOOP_HOME/conf/jmxremote.password-Dcom.sun.management.jmxremote.access.file=$HADOOP_HOME/conf/jmxremote.access $HADOOP_JOBTRACKER_OPTS"

exportHADOOP_TASKTRACKER_OPTS="-Dcom.sun.management.jmxremote.port=9494-Dcom.sun.management.jmxremote.ssl=false-Dcom.sun.management.jmxremote.authenticate=true-Dcom.sun.management.jmxremote.password.file=$HADOOP_HOME/conf/jmxremote.password-Dcom.sun.management.jmxremote.access.file=$HADOOP_HOME/conf/jmxremote.access $HADOOP_TASKTRACKER_OPTS"

2.创建用户访问控制文件

$HADOOP_HOME/conf/jmxremote.password内容:

myAdmin mypassword

$HADOOP_HOME/conf/jmxremote.access 内容:

myAdmin readonly

修改文件属性:

chmod 600 jmxremote.password

chmod 600jmxremote.password

3.使用JMX访问

URL为：

service:jmx:rmi://jdni/rmi://server1:9191/jmxrmi

service:jmx:rmi://jdni/rmi://server2:9292/jmxrmi

service:jmx:rmi://jdni/rmi://server1:9393/jmxrmi

service:jmx:rmi://jdni/rmi://server2:9494/jmxrmi

Jconsole中可见结果

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