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package com.skater.cloud;

 

importjavax.management.MBeanServerConnection;

import javax.management.ObjectName;

importjavax.management.openmbean.CompositeDataSupport;

importjavax.management.remote.JMXConnectorFactory;

importjavax.management.remote.JMXServiceURL;

 

public class JMXClient {

 

publicJMXClient£¨£© {

           super£¨£©;

}

 

publicstatic void main£¨String[] args£© throwsException {

 

           StringurlForJMX ="service:jmx:rmi:///jndi/rmi://192.168.48.128:9004/jmxrmi";

 

           MBeanServerConnectionjmxServerConnection = JMXConnectorFactory

                             .connect£¨new JMXServiceURL£¨urlForJMX£©£¬ null£©

                             .getMBeanServerConnection£¨£©;

 

           try{

                    String[]domains = jmxServerConnection.getDomains£¨£©;

                    for£¨String domain : domains£©{

                             System.out.println£¨domain£©;

                    }

           ObjectName memory = new ObjectName£¨"java.lang:type=Memory"£©;        

           CompositeDataSupport comp = £¨CompositeDataSupport£©jmxServerConnection.getAttribute£¨memory£¬ "HeapMemoryUsage"£©;

          

           double max = £¨Long£©comp.get£¨"max"£©;

           double used = £¨Long£©comp.get£¨"used"£©;

           System.out.println£¨used/max£©;

           }catch £¨Exception ex£© {

           ex.printStackTrace£¨£©;

           }

}

}

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packagecom.skater.cloud.util;

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publicclass OperateVM {

public void startVM£¨String userName£¬ Stringpasswd£¬ String url£¬ StringdataStore£¬String path£¬ StringVMName£© {

           ExecuteCommand.execute£¨"vmrun -T server -u "+userName+" -p"+passwd+" -h "+url

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}

 

public void stopVM£¨String userName£¬ Stringpasswd£¬ String url£¬ StringdataStore£¬String path£¬ StringVMName£© {

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packagecom.skater.cloud.util;

 

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1. Google¶ÔÔÆ¼ÆËãµÄ½âÊÍ

Pat Stingley:¡± Froman engineering perspecitve the cloud is a computing architecture characterizedby a large number of interconnected identical computing devices that can scaleon demand and that communicate via an IP network.  From a business perspective it is computingservices that are scalable and billed on a usage basis.¡±

 http://sites.google.com/site/cloudarchitecture

Pat Stingley£¨googleµÄÑо¿Ô±£©ÈÏΪ´Ó¹¤³ÌʦµÄ½Ç¶È¶øÑÔÔÆ¼ÆËãÊÇÒ»ÖÖÒÔ°´Ð裬¿ÉÀ©Õ¹µÄ·½Ê½»ñµÃËùÐèµÄ×ÊÔ´µÄ¼Ü¹¹¡£´ÓÉÌÒµµÄ½Ç¶È¿´ÕâÊÇÒ»ÖÖ°´Ð踶·ÑµÄ·þÎñ·½Ê½¡£

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3. ά»ù°Ù¿ÆÉ϶ÔÔÆ¼ÆËãµÄ½âÊÍ

ÔÆ¶Ë¼ÆË㣨ӢÎÄ£ºCloud computing£¬Öйú´ó½Òë×÷ÔÆ¼ÆË㣬̨ÍåÒë×÷ÔÆ¶ËÔËË㣩£¬ÊÇÒ»ÖÖ»ùÓÚ»¥ÁªÍøµÄ¼ÆË㷽ʽ£¬Í¨¹ýÕâÖÖ·½Ê½£¬¹²ÏíµÄÈíÓ²¼þ×ÊÔ´ºÍÐÅÏ¢¿ÉÒÔ°´ÐèÌṩ¸ø¼ÆËã»úºÍÆäËûÉ豸¡£Õû¸öÔËÐз½Ê½ºÜÏñµçÍø¡£

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