zabbix通过JMX监控Tomcat及一些报错

软件包下载地址：

Wget http://archive.apache.org/dist/tomcat/tomcat-7/v7.0.11/bin/apache-tomcat-7.0.11.tar.gz

#安装jdk:

Mkdir /usr/lib/jvm

Tar xf jdk-7u45-linux-x64.gz -C /usr/lib/jvm

#在profile追加以下内容 

Vim /etc/profile

JAVA_HOME="/usr/lib/jvm/jdk1.7.0_45"

CLASS_PATH="$JAVA_HOME/lib:$JAVA_HOME/jar/lib"

PATH=".:$PATH:$JAVA_HOME/bin"

#CATALINA_HOME="/usr/local/apache-tomcat-7.0.11"

export JAVA_HOME CATALINA_HOME

#检查是否安装成功

Source /etc/profile

java -version

#解压tomcat

tar xf apache-tomcat-7.0.11.tar.gz -C /usr/local/

Cd /usr/local/apache-tomcat-7.0.11/bin

./start.sh

#Tomcat 配置jmx

JAVA_OPTS="-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=9999 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false"

#下载cmdline-jmxclient-0.10.3.jar

/usr/local/apache-tomcat-7.0.11/lib/cmdline-jmxclient-0.10.3.jar

#本地测试

java -jar cmdline-jmxclient-0.10.3.jar - 10.10.31.20:10053 java.lang:type=Memory NonHeapMemoryUsage

报错信息：

java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.CommunicationException [Root exception is java.rmi.ConnectI

java.rmi.ConnectIOException: Exception creating connection to: 10.10.31.20; nested exception is: 
java.net.NoRouteToHostExcepti

 #编辑server.xml

 /usr/local/apache-tomcat-7.0.11/conf/server.xml

 #添加如下

<Listener className="org.apache.catalina.mbeans.JmxRemoteLifecycleListener" 
         rmiRegistryPortPlatform="10053" rmiServerPortPlatform="10054" />

创建tomcat/bin/setenv.sh  

CATALINA_OPTS="${CATALINA_OPTS} -Djava.rmi.server.hostname=10.10.31.20" 
CATALINA_OPTS="${CATALINA_OPTS} -Djavax.management.builder.initial=" 
CATALINA_OPTS="${CATALINA_OPTS} -Dcom.sun.management.jmxremote=true" 
CATALINA_OPTS="${CATALINA_OPTS} -Dcom.sun.management.jmxremote.ssl=false" 
CATALINA_OPTS="${CATALINA_OPTS} -Dcom.sun.management.jmxremote.authenticate=false"

Iptables开放端口

-A INPUT -p tcp -m state --state NEW -m tcp --dport 10053 -j ACCEPT

-A INPUT -p tcp -m state --state NEW -m tcp --dport 10054 -j ACCEPT

java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.ServiceUnavailableException [Root exception is java.rmi.Con