前面两篇JMX远程监控Tomcat服务器是没配置密码的，下面介绍在Tomcat监控时配置用户密码。
具体Tomcat地址：http://tomcat.apache.org/tomcat-6.0-doc/monitoring.html#Enabling_JMX_Remote
Note: This syntax is for Microsoft Windows. The command has to be on the same line. It is wrapped to be more readable. If Tomcat is running as a Windows service, use its configuration dialog to set java options for the service. For un*xes remove
"set " from beginning of the line.
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set CATALINA_OPTS=-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=%my.jmx.port% -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false |
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- If you require authorization, add and change this :
-Dcom.sun.management.jmxremote.authenticate=true -Dcom.sun.management.jmxremote.password.file=../conf/jmxremote.password -Dcom.sun.management.jmxremote.access.file=../conf/jmxremote.access
- edit the access authorization file $CATALINA_BASE/conf/jmxremote.access :
monitorRole readonly controlRole readwrite
- edit the password file $CATALINA_BASE/conf/jmxremote.password :
monitorRole tomcat controlRole tomcat
Tip: The password file should be read-only and only accessible by the operating system user Tomcat is running as.
其内容大概如下：
1、编辑Tomcat/bin中的catalina.bat。如果配置权限，需要将autenticate设置为true，将1中的下面两行代码添加到最上面一行，注意：这些所有的命令必须在一行！。
2、在Tomcat/conf目录下新建两个文件：jmxremote.access和jmxremote.password
第一个文件存的是角色信息，第二个存放的是密码信息（可修改）。
配置完上面信息后：我们启动tomcat时，Tomcat出现一闪而过，上面提示的大概意思是权限问题。
解决的办法是：选中Tomcat文件夹，点右键 -->“属性”-->“安全”--> 点“高级”--> 点“更改权限”--> 去掉“从父项继承....”--> 弹出窗口中选“删除”，这样就删除了所有访问权限。再选“添加”--> “高级”--> “立即查找”，选中你的用户（或用户组，如果选用户不行那就选用户组），例administrator（当前电脑的权限），点“确定"，“确定"。来到权限项目窗口，勾选“完全控制”，点“确定”，重启就可以了。
实现：
没有密码时，我们采用JMXConnectorFactory工厂类的 connect(JMXServiceURL serviceURL) 创建到位于给定地址的连接器服务器的连接。 设置密码后需connect(JMXServiceURL serviceURL, Map<String,?> environment) ，
设置map存放environment.put("jmx.remote.credentials", credentials);配置信息。
String[] credentials = new String[] { "monitorRole", "tomcat" };
其具体实现如下：
package pyc.jvm.monitor;
import java.io.IOException;
import java.lang.management.ClassLoadingMXBean;
import java.lang.management.ManagementFactory;
import java.lang.management.MemoryMXBean;
import java.lang.management.MemoryUsage;
import java.lang.management.OperatingSystemMXBean;
import java.lang.management.ThreadMXBean;
import java.net.MalformedURLException;
import java.util.HashMap;
import java.util.Map;
import java.util.Timer;
import java.util.TimerTask;
import java.util.concurrent.TimeUnit;
import javax.management.AttributeNotFoundException;
import javax.management.InstanceNotFoundException;
import javax.management.MBeanException;
import javax.management.MBeanServerConnection;
import javax.management.ReflectionException;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXServiceURL;
/**
* 创建时间：2014-12-5 上午11:06:34
*
* @author zhangtianyou
* @version 2.2
*/
public class JMXTest3 {
private final static String SERVICE_1 = "service:jmx:rmi:///jndi/rmi://192.168.85.54:8787/jmxrmi";
/**
* @param args
*/
public static void main(String[] args) {
// 10秒调用一次
Timer timer = new Timer();
timer.schedule(new JMXTest3().new MonitorTask(SERVICE_1), 0, 10000);
}
private class MonitorTask extends TimerTask {
private String service;
public MonitorTask(String service) {
this.service = service;
}
@Override
public void run() {
JMXmonitor(service);
}
}
private static void JMXmonitor(String service) {
JMXConnector jmxConnector = null;
try {
JMXServiceURL ServiceURL = new JMXServiceURL(service);
Map<String, String[]> environment = new HashMap<String, String[]>();
// 用户名密码，在jmxremote.password文件中的密码
String[] credentials = new String[] { "monitorRole", "tomcat" };
environment.put("jmx.remote.credentials", credentials);
jmxConnector = JMXConnectorFactory.connect(ServiceURL, environment);
MBeanServerConnection mBeanServerConnection = jmxConnector
.getMBeanServerConnection();
// 获取MemoryMXBean
System.out.println("\nMemory");
MemoryMXBean memoryMXBean = ManagementFactory
.newPlatformMXBeanProxy(mBeanServerConnection,
ManagementFactory.MEMORY_MXBEAN_NAME,
MemoryMXBean.class);
MemoryUsage heapMemoryUsage = memoryMXBean.getHeapMemoryUsage();
System.out.println("heapMemoryUsage :");
System.out.println("committed = "
+ convertKB(heapMemoryUsage.getCommitted()));
System.out
.println("init = " + convertKB(heapMemoryUsage.getInit()));
System.out.println("max = " + convertKB(heapMemoryUsage.getMax()));
System.out
.println("used = " + convertKB(heapMemoryUsage.getUsed()));
MemoryUsage nonHeapMemoryUsage = memoryMXBean
.getNonHeapMemoryUsage();
System.out.println("\nnonHeapMemoryUsage :");
System.out.println("committed = "
+ convertKB(nonHeapMemoryUsage.getCommitted()));
System.out.println("init = "
+ convertKB(nonHeapMemoryUsage.getInit()));
System.out.println("max = "
+ convertKB(nonHeapMemoryUsage.getMax()));
System.out.println("used = "
+ convertKB(nonHeapMemoryUsage.getUsed()));
// 获取 ThreadMXBean
System.out.println("\nThread");
ThreadMXBean threadMXBean = ManagementFactory
.newPlatformMXBeanProxy(mBeanServerConnection,
ManagementFactory.THREAD_MXBEAN_NAME,
ThreadMXBean.class);
System.out
.println("ThreadCount = " + threadMXBean.getThreadCount());
System.out.println("DaemonThreadCount = "
+ threadMXBean.getDaemonThreadCount());
System.out.println("PeakThreadCount = "
+ threadMXBean.getPeakThreadCount());
System.out.println("CurrentThreadCpuTime = "
+ threadMXBean.getCurrentThreadCpuTime());
System.out.println("CurrentThreadUserTime = "
+ threadMXBean.getCurrentThreadUserTime());
System.out.println("\nClassLoading");
ClassLoadingMXBean classLoadingMXBean = ManagementFactory
.newPlatformMXBeanProxy(mBeanServerConnection,
ManagementFactory.CLASS_LOADING_MXBEAN_NAME,
ClassLoadingMXBean.class);
// 当前加载到Java虚拟机中类的数量
System.out.println("LoadedClassCount = "
+ classLoadingMXBean.getLoadedClassCount());
// Java 虚拟机开始执行到目前已经加载的类的总数。
System.out.println("TotalLoadedClassCount = "
+ classLoadingMXBean.getTotalLoadedClassCount());
// Java 虚拟机开始执行到目前已经卸载的类的总数。
System.out.println("UnloadedClassCount = "
+ classLoadingMXBean.getUnloadedClassCount());
System.out.println("\nCpu");
OperatingSystemMXBean operatingSystemMXBean = ManagementFactory
.newPlatformMXBeanProxy(mBeanServerConnection,
ManagementFactory.OPERATING_SYSTEM_MXBEAN_NAME,
OperatingSystemMXBean.class);
System.out.println("AvailableProcessors = "
+ operatingSystemMXBean.getAvailableProcessors());
double ratio = 0.0;
long start = System.currentTimeMillis();
long startC;
try {
startC = (long) mBeanServerConnection
.getAttribute(operatingSystemMXBean.getObjectName(),
"ProcessCpuTime");
try {
TimeUnit.SECONDS.sleep(5);
} catch (InterruptedException e) {
e.printStackTrace();
}
long end = System.currentTimeMillis();
long endC = (long) mBeanServerConnection
.getAttribute(operatingSystemMXBean.getObjectName(),
"ProcessCpuTime");
int availableProcessors = operatingSystemMXBean
.getAvailableProcessors();
ratio = (endC - startC) / 1000000.0 / (end - start)
/ availableProcessors;
} catch (AttributeNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (InstanceNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (MBeanException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (ReflectionException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
System.out.println("CUP使用率" + round(ratio * 100) + "%");
} catch (MalformedURLException e) {
e.printStackTrace();
System.out.println("非法的ServiceURL");
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (jmxConnector != null) {
jmxConnector.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
private static String convertKB(long src) {
if (src <= 0L) {
return "0KB";
}
double conversrc = src / 1024 / 1024;
return round(conversrc) + "MB";
}
private static float round(double src) {
return (float) (Math.round(src * 100)) / 100;
}
}
嵌套在JavaEE中的效果如下：
时间： 2024-08-07 12:19:30