JMX監控Tomcat

環境：Tomcat5.5、jdk6

1、先配Tomcat的啓動語句，window下tomcat的bin/catalina.bat（linux爲catalina.sh），在頭上註釋部分（.bat爲rem、.sh爲#）後面加上set JAVA_OPTS=-Dcom.sun.management.jmxremote.port=8999 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=true

(linux爲JAVA_OPTS=-Dcom.sun.management.jmxremote.port=8999 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=true)
2、修改jmx遠程訪問授權。默認爲JAVA_HOME/jre/lib/management下jmxremote.access、jmxremote.password（缺省系統提供了個模版jmxremote.password.template改下名就成）

注意：linux下需要該權限，chmod 600 jmxremote.access, chmod 600 jmxremote.password

window下特麻煩，現需要jdk裝在NTFS文件系統下，選中文件，點右鍵“屬性”-〉安全，點“高級”，去掉“從父項繼承....”，彈出窗口中選“刪除”，這樣刪除了所有訪問權限。再選“添加”-〉高級，“立即查找”，選中你的用戶，例administrator，點“確定"，“確定"。來到權限窗口，勾選"完全控制"，點"確定"，OK了。

3、測試JMX。啓動tomcat，在window“命令行窗口”中輸入netstat -an看下8999端口打開沒有。若沒有，則前面沒配對。若已打開，則可在另一臺機器的“命令行窗口”中輸入jconsole，打開jdk自帶的jmx客戶端。選遠程連接，錄入tomcat所在機器的IP，端口例192.168.10.10:8999，帳號、密碼在jmxremote.password中，如帳號controlRole，密碼R&D（缺省monitorRole只能讀，controlRole能讀寫，jmxremote.access中可配置）。點“連接”。看到圖就行了。

4、關於數據。Mbean屬性頁中給出了相應的數據，Catalina中是tomcat的，java.lang是jvm的。對於加粗的黑體屬性值，需雙擊一下才可看內容

5、關於編程。

 public class JMXTest { /** * @param args */ public static void main(String[] args) { try { String jmxURL = "service:jmx:rmi:///jndi/rmi://192.168.10.93:8999/jmxrmi";//tomcat jmx url JMXServiceURL serviceURL = new JMXServiceURL(jmxURL); Map map = new HashMap(); String[] credentials = new String[] { "monitorRole" , "QED" }; map.put("jmx.remote.credentials", credentials); JMXConnector connector = JMXConnectorFactory.connect(serviceURL, map); MBeanServerConnection mbsc = connector.getMBeanServerConnection(); //端口最好是動態取得 ObjectName threadObjName = new ObjectName("Catalina:type=ThreadPool,name=http-8080"); MBeanInfo mbInfo = mbsc.getMBeanInfo(threadObjName); String attrName = "currentThreadCount";//tomcat的線程數對應的屬性值 MBeanAttributeInfo[] mbAttributes = mbInfo.getAttributes(); System.out.println("currentThreadCount:"+mbsc.getAttribute(threadObjName, attrName)); //heap for(int j=0;j <mbsc.getDomains().length;j++){ System.out.println("###########"+mbsc.getDomains()[j]); } Set MBeanset = mbsc.queryMBeans(null, null); System.out.println("MBeanset.size() : " + MBeanset.size()); Iterator MBeansetIterator = MBeanset.iterator(); while (MBeansetIterator.hasNext()) { ObjectInstance objectInstance = (ObjectInstance)MBeansetIterator.next(); ObjectName objectName = objectInstance.getObjectName(); String canonicalName = objectName.getCanonicalName(); System.out.println("canonicalName : " + canonicalName); if (canonicalName.equals("Catalina:host=localhost,type=Cluster")) { // Get details of cluster MBeans System.out.println("Cluster MBeans Details:"); System.out.println("========================================="); //getMBeansDetails(canonicalName); String canonicalKeyPropList = objectName.getCanonicalKeyPropertyListString(); } } //------------------------- system ---------------------- ObjectName runtimeObjName = new ObjectName("java.lang:type=Runtime"); System.out.println("廠商:"+ (String)mbsc.getAttribute(runtimeObjName, "VmVendor")); System.out.println("程序:"+ (String)mbsc.getAttribute(runtimeObjName, "VmName")); System.out.println("版本:"+ (String)mbsc.getAttribute(runtimeObjName, "VmVersion")); Date starttime=new Date((Long)mbsc.getAttribute(runtimeObjName, "StartTime")); SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); System.out.println("啓動時間:"+df.format(starttime)); Long timespan=(Long)mbsc.getAttribute(runtimeObjName, "Uptime"); System.out.println("連續工作時間:"+JMXTest.formatTimeSpan(timespan)); //------------------------ JVM ------------------------- //堆使用率 ObjectName heapObjName = new ObjectName("java.lang:type=Memory"); MemoryUsage heapMemoryUsage = MemoryUsage.from((CompositeDataSupport)mbsc.getAttribute(heapObjName, "HeapMemoryUsage")); long maxMemory = heapMemoryUsage.getMax();//堆最大 long commitMemory = heapMemoryUsage.getCommitted();//堆當前分配 long usedMemory = heapMemoryUsage.getUsed(); System.out.println("heap:"+(double)usedMemory*100/commitMemory+"%");//堆使用率 MemoryUsage nonheapMemoryUsage = MemoryUsage.from((CompositeDataSupport)mbsc.getAttribute(heapObjName, "NonHeapMemoryUsage")); long noncommitMemory = nonheapMemoryUsage.getCommitted(); long nonusedMemory = heapMemoryUsage.getUsed(); System.out.println("nonheap:"+(double)nonusedMemory*100/noncommitMemory+"%"); ObjectName permObjName = new ObjectName("java.lang:type=MemoryPool,name=Perm Gen"); MemoryUsage permGenUsage = MemoryUsage.from((CompositeDataSupport)mbsc.getAttribute(permObjName, "Usage")); long committed = permGenUsage.getCommitted();//持久堆大小 long used = heapMemoryUsage.getUsed();// System.out.println("perm gen:"+(double)used*100/committed+"%");//持久堆使用率 //-------------------- Session --------------- ObjectName managerObjName = new ObjectName("Catalina:type=Manager,*"); Set<ObjectName> s=mbsc.queryNames(managerObjName, null); for (ObjectName obj:s){ System.out.println("應用名:"+obj.getKeyProperty("path")); ObjectName objname=new ObjectName(obj.getCanonicalName()); System.out.println("最大會話數:"+ mbsc.getAttribute( objname, "maxActiveSessions")); System.out.println("會話數:"+ mbsc.getAttribute( objname, "activeSessions")); System.out.println("活動會話數:"+ mbsc.getAttribute( objname, "sessionCounter")); } //----------------- Thread Pool ---------------- ObjectName threadpoolObjName = new ObjectName("Catalina:type=ThreadPool,*"); Set<ObjectName> s2=mbsc.queryNames(threadpoolObjName, null); for (ObjectName obj:s2){ System.out.println("端口名:"+obj.getKeyProperty("name")); ObjectName objname=new ObjectName(obj.getCanonicalName()); System.out.println("最大線程數:"+ mbsc.getAttribute( objname, "maxThreads")); System.out.println("當前線程數:"+ mbsc.getAttribute( objname, "currentThreadCount")); System.out.println("繁忙線程數:"+ mbsc.getAttribute( objname, "currentThreadsBusy")); } } catch (Exception e) { e.printStackTrace(); } } public static String formatTimeSpan(long span){ long minseconds = span % 1000; span = span /1000; long seconds = span % 60; span = span / 60; long mins = span % 60; span = span / 60; long hours = span % 24; span = span / 24; long days = span; return (new Formatter()).format("%1$d天 %2$02d:%3$02d:%4$02d.%5$03d", days,hours,mins,seconds,minseconds).toString(); } } public class JMXTest { /** * @param args */ public static void main(String[] args) { try { String jmxURL = "service:jmx:rmi:///jndi/rmi://192.168.10.93:8999/jmxrmi";//tomcat jmx url JMXServiceURL serviceURL = new JMXServiceURL(jmxURL); Map map = new HashMap(); String[] credentials = new String[] { "monitorRole" , "QED" }; map.put("jmx.remote.credentials", credentials); JMXConnector connector = JMXConnectorFactory.connect(serviceURL, map); MBeanServerConnection mbsc = connector.getMBeanServerConnection(); //端口最好是動態取得 ObjectName threadObjName = new ObjectName("Catalina:type=ThreadPool,name=http-8080"); MBeanInfo mbInfo = mbsc.getMBeanInfo(threadObjName); String attrName = "currentThreadCount";//tomcat的線程數對應的屬性值 MBeanAttributeInfo[] mbAttributes = mbInfo.getAttributes(); System.out.println("currentThreadCount:"+mbsc.getAttribute(threadObjName, attrName)); //heap for(int j=0;j <mbsc.getDomains().length;j++){ System.out.println("###########"+mbsc.getDomains()[j]); } Set MBeanset = mbsc.queryMBeans(null, null); System.out.println("MBeanset.size() : " + MBeanset.size()); Iterator MBeansetIterator = MBeanset.iterator(); while (MBeansetIterator.hasNext()) { ObjectInstance objectInstance = (ObjectInstance)MBeansetIterator.next(); ObjectName objectName = objectInstance.getObjectName(); String canonicalName = objectName.getCanonicalName(); System.out.println("canonicalName : " + canonicalName); if (canonicalName.equals("Catalina:host=localhost,type=Cluster")) { // Get details of cluster MBeans System.out.println("Cluster MBeans Details:"); System.out.println("========================================="); //getMBeansDetails(canonicalName); String canonicalKeyPropList = objectName.getCanonicalKeyPropertyListString(); } } //------------------------- system ---------------------- ObjectName runtimeObjName = new ObjectName("java.lang:type=Runtime"); System.out.println("廠商:"+ (String)mbsc.getAttribute(runtimeObjName, "VmVendor")); System.out.println("程序:"+ (String)mbsc.getAttribute(runtimeObjName, "VmName")); System.out.println("版本:"+ (String)mbsc.getAttribute(runtimeObjName, "VmVersion")); Date starttime=new Date((Long)mbsc.getAttribute(runtimeObjName, "StartTime")); SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); System.out.println("啓動時間:"+df.format(starttime)); Long timespan=(Long)mbsc.getAttribute(runtimeObjName, "Uptime"); System.out.println("連續工作時間:"+JMXTest.formatTimeSpan(timespan)); //------------------------ JVM ------------------------- //堆使用率 ObjectName heapObjName = new ObjectName("java.lang:type=Memory"); MemoryUsage heapMemoryUsage = MemoryUsage.from((CompositeDataSupport)mbsc.getAttribute(heapObjName, "HeapMemoryUsage")); long maxMemory = heapMemoryUsage.getMax();//堆最大 long commitMemory = heapMemoryUsage.getCommitted();//堆當前分配 long usedMemory = heapMemoryUsage.getUsed(); System.out.println("heap:"+(double)usedMemory*100/commitMemory+"%");//堆使用率 MemoryUsage nonheapMemoryUsage = MemoryUsage.from((CompositeDataSupport)mbsc.getAttribute(heapObjName, "NonHeapMemoryUsage")); long noncommitMemory = nonheapMemoryUsage.getCommitted(); long nonusedMemory = heapMemoryUsage.getUsed(); System.out.println("nonheap:"+(double)nonusedMemory*100/noncommitMemory+"%"); ObjectName permObjName = new ObjectName("java.lang:type=MemoryPool,name=Perm Gen"); MemoryUsage permGenUsage = MemoryUsage.from((CompositeDataSupport)mbsc.getAttribute(permObjName, "Usage")); long committed = permGenUsage.getCommitted();//持久堆大小 long used = heapMemoryUsage.getUsed();// System.out.println("perm gen:"+(double)used*100/committed+"%");//持久堆使用率 //-------------------- Session --------------- ObjectName managerObjName = new ObjectName("Catalina:type=Manager,*"); Set<ObjectName> s=mbsc.queryNames(managerObjName, null); for (ObjectName obj:s){ System.out.println("應用名:"+obj.getKeyProperty("path")); ObjectName objname=new ObjectName(obj.getCanonicalName()); System.out.println("最大會話數:"+ mbsc.getAttribute( objname, "maxActiveSessions")); System.out.println("會話數:"+ mbsc.getAttribute( objname, "activeSessions")); System.out.println("活動會話數:"+ mbsc.getAttribute( objname, "sessionCounter")); } //----------------- Thread Pool ---------------- ObjectName threadpoolObjName = new ObjectName("Catalina:type=ThreadPool,*"); Set<ObjectName> s2=mbsc.queryNames(threadpoolObjName, null); for (ObjectName obj:s2){ System.out.println("端口名:"+obj.getKeyProperty("name")); ObjectName objname=new ObjectName(obj.getCanonicalName()); System.out.println("最大線程數:"+ mbsc.getAttribute( objname, "maxThreads")); System.out.println("當前線程數:"+ mbsc.getAttribute( objname, "currentThreadCount")); System.out.println("繁忙線程數:"+ mbsc.getAttribute( objname, "currentThreadsBusy")); } } catch (Exception e) { e.printStackTrace(); } } public static String formatTimeSpan(long span){ long minseconds = span % 1000; span = span /1000; long seconds = span % 60; span = span / 60; long mins = span % 60; span = span / 60; long hours = span % 24; span = span / 24; long days = span; return (new Formatter()).format("%1$d天 %2$02d:%3$02d:%4$02d.%5$03d", days,hours,mins,seconds,minseconds).toString(); } }

 

本文來自CSDN博客，轉載請標明出處：http://blog.csdn.net/airobot008/archive/2009/03/03/3951524.aspx