運用JMX監控Tomcat
1、先配Tomcat的啟動語句，window下tomcat的bin/catalina.bat（linux為catalina.sh），在頭上注釋部分（.bat為rem、.sh為#）后面加上set JAVA_OPTS=-Dcom.sun.management.jmxremote.port=8999 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=true
(linux為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。默認為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、用jconsole連接遠程linux服務時, IP地址和port都輸入正確的情況下,仍然是連接失敗
vi /etc/hosts，將hostname對應的IP改為真實IP
4、測試JMX。啟動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。
5、關于數據。Mbean屬性頁中給出了相應的數據，Catalina中是tomcat的，java.lang是jvm的。對于加粗的黑體屬性值，需雙擊一下才可看內容
5、關于編程。
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("啟動時間:"+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();
}
}
另外實例：
public ConcurrentHashMap<String, Object> parseJMS(String tempid, ConcurrentHashMap<String, Object> paraMap) {
MBeanServerConnection mbsc = null;
try {
mbsc = connector.getMBeanServerConnection();
// ------------------------- system ----------------------
ObjectName runtimeObjName = new ObjectName("java.lang:type=Runtime");
TabularDataSupport system = (TabularDataSupport) mbsc.getAttribute(runtimeObjName, "SystemProperties");
//JVM版本
paraMap.put(tempid + "_JVMVERSION", mbsc.getAttribute(runtimeObjName, "VmVersion"));
//JVM廠商
paraMap.put(tempid + "_JVMMANUFACTURER", mbsc.getAttribute(runtimeObjName, "VmVendor"));
//系統結構
paraMap.put(tempid + "_SYSTEMSTRUCTURE", system.get(new Object[] {"os.arch"}).get("value"));
//操作系統
paraMap.put(tempid + "_OPERATIONSYSTEM", system.get(new Object[] {"os.name"}).get("value"));
//操作系統版本
paraMap.put(tempid + "_OPERATIONSYSTEMVERSION", system.get(new Object[] {"os.version"}).get("value"));
//Tomcat版本
String t_version = (String) system.get(new Object[] {"org.apache.catalina.startup.TldConfig.jarsToSkip"}).get("value");
paraMap.put(tempid + "_TOMCATVERSION", t_version == null ? "" : t_version.substring(0, t_version.indexOf("-")));
//鏈接Tomcat服務器的響應時間 -------------
ObjectName heapObjName = new ObjectName("java.lang:type=Memory");
MemoryUsage heapMemoryUsage = MemoryUsage.from((CompositeDataSupport)mbsc.getAttribute(heapObjName, "HeapMemoryUsage"));
//JVM已用內存
paraMap.put(tempid + "_JVMUSERDMEMORY", heapMemoryUsage.getUsed());
//JVM可用內存
paraMap.put(tempid + "_JVMAVAILABLEMEMORY", heapMemoryUsage.getCommitted() - heapMemoryUsage.getUsed());
//JVM內存總數
paraMap.put(tempid + "_JVMTOTALMEMORY", heapMemoryUsage.getCommitted());
//----------------- GlobalRequestProcessor ----------------
ObjectName requestProcessor = new ObjectName("Catalina:type=GlobalRequestProcessor,*");
Set<ObjectName> s2 = mbsc.queryNames(requestProcessor, null);
long bytesSents = 0;
long bytesReceiveds = 0;
Integer errorCounts = 0;
Integer requestCounts = 0;
long processingTimes = 0;
long maxTimes = 0;
for (ObjectName obj : s2) {
ObjectName objname = new ObjectName(obj.getCanonicalName());
long bytesSent = (long) mbsc.getAttribute( objname, "bytesSent");
long bytesReceived = (long) mbsc.getAttribute( objname, "bytesReceived");
Integer errorCount = (Integer) mbsc.getAttribute( objname, "errorCount");
Integer requestCount = (Integer) mbsc.getAttribute( objname, "requestCount");
long processingTime = (long) mbsc.getAttribute( objname, "processingTime");
long maxTime = (long) mbsc.getAttribute( objname, "maxTime");
bytesSents += bytesSent;
bytesReceiveds += bytesReceived;
errorCounts += errorCount;
requestCounts += requestCount;
processingTimes += processingTime;
maxTimes += maxTime;
}
//發送字節
paraMap.put(tempid + "_SENDBYTE", bytesSents);
//接收字節
paraMap.put(tempid + "_RECIEVEDBYTE", bytesReceiveds);
//錯誤個數
paraMap.put(tempid + "_ERRORNUMBER", errorCounts);
//請求個數
paraMap.put(tempid + "_REQUESTNUMBER", requestCounts);
//處理時間
paraMap.put(tempid + "_TREATMENTTIME", processingTimes);
//最大處理時間
paraMap.put(tempid + "_MAXTREATMENTTIME", maxTimes);
//----------------- Thread Pool ----------------
ObjectName threadpoolObjName = new ObjectName("Catalina:type=ThreadPool,*");
Set<ObjectName> tp = mbsc.queryNames(threadpoolObjName, null);
int currentThreadsBusys = 0;
int maxThreadss = 0;
for (ObjectName obj : tp) {
ObjectName objname = new ObjectName(obj.getCanonicalName());
int currentThreadsBusy = (int) mbsc.getAttribute( objname, "currentThreadsBusy");
int maxThreads = (int) mbsc.getAttribute( objname, "maxThreads");
currentThreadsBusys += currentThreadsBusy;
maxThreadss += maxThreads;
}
//當前忙碌線程數
paraMap.put(tempid + "_CURRENTBUSYTHREADSNUMBER", currentThreadsBusys);
//最大線程數
paraMap.put(tempid + "_MAXTHREADSNUMBER", maxThreadss);
//----------------- RequestProcessor ----------------
ObjectName requestProcessor1 = new ObjectName("Catalina:type=RequestProcessor,*");
Set<ObjectName> rp = mbsc.queryNames(requestProcessor1, null);
long requestProcessingTimes = 0;
int portCount = 0;
for (ObjectName obj : rp) {
portCount++;
ObjectName objname = new ObjectName(obj.getCanonicalName());
long requestProcessingTime = (long) mbsc.getAttribute(objname, "requestProcessingTime");
requestProcessingTimes += requestProcessingTime;
}
//端口平均響應時間
paraMap.put(tempid + "_AVERAGERESPONSETIME", portCount == 0 ? requestProcessingTimes : Math.round(requestProcessingTimes/portCount));
} catch (IOException e) {
e.printStackTrace();
} catch (MalformedObjectNameException e) {
e.printStackTrace();
} catch (AttributeNotFoundException e) {
e.printStackTrace();
} catch (InstanceNotFoundException e) {
e.printStackTrace();
} catch (MBeanException e) {
e.printStackTrace();
} catch (ReflectionException e) {
e.printStackTrace();
} catch (SecurityException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
}
return paraMap;
}
public static void main(String[] args) {
DoJob job = new DoJob();
String tempid = "MW_WS_TOMCAT_AGENT";
job.connector = TomcatUtil.getJMXOfTomcat("service:jmx:rmi:///jndi/rmi://191.168.2.31:8999/jmxrmi", "", "");
ConcurrentHashMap<String, Object> paraMap = new ConcurrentHashMap<String, Object>();
paraMap = job.parseJMS(tempid, paraMap);
Iterator<String> it = paraMap.keySet().iterator();
while(it.hasNext()) {
String key = it.next();
System.out.println(key + " : " + paraMap.get(key));
}
} 來自;：http://my.oschina.net/xuqiang/blog/294613
本文由用戶 jopen 自行上傳分享，僅供網友學習交流。所有權歸原作者，若您的權利被侵害，請聯系管理員。
轉載本站原創文章，請注明出處，并保留原始鏈接、圖片水印。
本站是一個以用戶分享為主的開源技術平臺，歡迎各類分享！