One, background
Previous state to get the zookeeper comes by Java JConsole. There are several places inconvenient, zk cluster deployment usually 3 or 5, switching is too much trouble in more than JConsole window, between the various service zk and historical data can not be directly compared. General management will do a WEB page to show the state of the cluster, set alarm thresholds to do the police.
Two, JVM platform provides Mbeans
In the above Java5.0 version, there is a set of API that allows Java applications and allow the tools to monitor and manage the Java Virtual Machine (JVM) and the virtual machine where the native operating system. The set of API in java.lang.management package. It can be monitored by the local terminal JVM API, and can also monitor the distal end JVM.
Get MXBean instance through the static factory method, local access from the virtual machine running the MXBean interface. The Bean We static methods defined in the class get ManagementFactory; as ManagementFactory.getOperatingSystemMXBean (); which is less than the JVM can only get local status. Unable to get remote virtual machine data.
Class loading system ClassLoadingMXBean Java Virtual Machine
compiler system CompilationMXBean Java Virtual Machine
MemoryMXBean Java virtual machine's memory system
runtime system RuntimeMXBean Java Virtual Machine
OperatingSystemMXBean Java virtual machine running on its operating system
GarbageCollectorMXBean Java virtual machine garbage collector
MemoryManagerMXBean Java virtual machine memory manager
MemoryPoolMXBean Java virtual machine memory pool
three, Zookeeper provide out Mbeans
Configuration MXBean proxy instance, MBeanServe forwarded to a given call by the proxy method. JConsole capable of monitoring the project can be obtained via the API.
Specific code as follows:
import java.io.IOException;
import java.lang.management.ClassLoadingMXBean;
import java.lang.management.CompilationMXBean;
import java.lang.management.ManagementFactory;
import java.lang.management.OperatingSystemMXBean;
import java.lang.management.ThreadMXBean;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.management.InstanceNotFoundException;
import javax.management.IntrospectionException;
import javax.management.JMX;
import javax.management.MBeanServerConnection;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import javax.management.ReflectionException;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXServiceURL;
import org.apache.zookeeper.server.ConnectionMXBean;
import org.apache.zookeeper.server.DataTreeMXBean;
import org.apache.zookeeper.server.ZooKeeperServerMXBean;
public class ZkJMXTest {
static JMXConnector connector;
/**
* @param args
* @throws IOException
* @throws MalformedObjectNameException
* @throws InstanceNotFoundException
* @throws ReflectionException
* @throws IntrospectionException
*/
public static void main(String[] args) throws IOException, MalformedObjectNameException,
InstanceNotFoundException, IntrospectionException, ReflectionException {
OperatingSystemMXBean osbean = ManagementFactory.getOperatingSystemMXBean();
System.out.println("体系结构:" + osbean.getArch());//操作系统体系结构
System.out.println("处理器核数:" + osbean.getAvailableProcessors());///核数
System.out.println("名字:" + osbean.getName());//名字
System.out.println(osbean.getVersion());//操作系统版本
ThreadMXBean threadBean=ManagementFactory.getThreadMXBean();
System.out.println("活动线程:" + threadBean.getThreadCount());//总线程数
ClassLoadingMXBean classLoadingMXBean = ManagementFactory.getClassLoadingMXBean();
CompilationMXBean compilationMXBean = ManagementFactory.getCompilationMXBean();
System.out.println("===========");
// 通过 MBeanServer间接地访问 MXBean 接口
MBeanServerConnection mbsc = createMBeanServer("192.168.1.100", "9991", "controlRole", "123456");
// 操作系统
ObjectName os = new ObjectName("java.lang:type=OperatingSystem");
System.out.println("体系结构:" + getAttribute(mbsc, os, "Arch"));//体系结构
System.out.println("处理器核数:" + getAttribute(mbsc, os, "AvailableProcessors"));//核数
System.out.println("总物理内存:" + getAttribute(mbsc, os, "TotalPhysicalMemorySize"));//总物理内存
System.out.println("空闲物理内存:" + getAttribute(mbsc, os, "FreePhysicalMemorySize"));//空闲物理内存
System.out.println("总交换空间:" + getAttribute(mbsc, os, "TotalSwapSpaceSize"));//总交换空间
System.out.println("空闲交换空间:" + getAttribute(mbsc, os, "FreeSwapSpaceSize"));//空闲交换空间
System.out.println("操作系统:" + getAttribute(mbsc, os, "Name")+ getAttribute(mbsc, os, "Version"));//操作系统
System.out.println("提交的虚拟内存:" + getAttribute(mbsc, os, "CommittedVirtualMemorySize"));//提交的虚拟内存
System.out.println("系统cpu使用率:" + getAttribute(mbsc, os, "SystemCpuLoad"));//系统cpu使用率
System.out.println("进程cpu使用率:" + getAttribute(mbsc, os, "ProcessCpuLoad"));//进程cpu使用率
System.out.println("============");//
// 线程
ObjectName Threading = new ObjectName("java.lang:type=Threading");
System.out.println("活动线程:" + getAttribute(mbsc, Threading, "ThreadCount"));// 活动线程
System.out.println("守护程序线程:" + getAttribute(mbsc, Threading, "DaemonThreadCount"));// 守护程序线程
System.out.println("峰值:" + getAttribute(mbsc, Threading, "PeakThreadCount"));// 峰值
System.out.println("启动的线程总数:" + getAttribute(mbsc, Threading, "TotalStartedThreadCount"));// 启动的线程总数
ThreadMXBean threadBean2 = ManagementFactory.newPlatformMXBeanProxy
(mbsc, ManagementFactory.THREAD_MXBEAN_NAME, ThreadMXBean.class);
System.out.println("活动线程:" + threadBean2.getThreadCount());// 活动线程
ThreadMXBean threadBean3 = ManagementFactory.getThreadMXBean();
System.out.println("本地活动线程:" + threadBean3.getThreadCount());// 本地活动线程
System.out.println("============");//
ObjectName Compilation = new ObjectName("java.lang:type=Compilation");
System.out.println("总编译时间 毫秒:" + getAttribute(mbsc, Compilation, "TotalCompilationTime"));// 总编译时间 毫秒
System.out.println("============");//
ObjectName ClassLoading = new ObjectName("java.lang:type=ClassLoading");
System.out.println("已加载类总数:" + getAttribute(mbsc, ClassLoading, "TotalLoadedClassCount"));// 已加载类总数
System.out.println("已加装当前类:" + getAttribute(mbsc, ClassLoading, "LoadedClassCount"));// 已加装当前类
System.out.println("已卸载类总数:" + getAttribute(mbsc, ClassLoading, "UnloadedClassCount"));// 已卸载类总数
System.out.println("==========================================================");//
// http://zookeeper.apache.org/doc/r3.4.6/zookeeperJMX.html
// org.apache.ZooKeeperService:name0=ReplicatedServer_id1,name1=replica.1,name2=Follower
ObjectName replica = new ObjectName("org.apache.ZooKeeperService:name0=ReplicatedServer_id1,name1=replica.1");
System.out.println("replica.1运行状态:" + getAttribute(mbsc, replica, "State"));// 运行状态
mbsc = createMBeanServer("192.168.1.100", "×××", "controlRole", "123456");
System.out.println("==============节点树对象===========");
ObjectName dataTreePattern = new ObjectName("org.apache.ZooKeeperService:name0=ReplicatedServer_id?,name1=replica.?,name2=*,name3=InMemoryDataTree");
Set<ObjectName> dataTreeSets = mbsc.queryNames(dataTreePattern, null);
Iterator<ObjectName> dataTreeIterator = dataTreeSets.iterator();
// 只有一个
while (dataTreeIterator.hasNext()) {
ObjectName dataTreeObjectName = dataTreeIterator.next();
DataTreeMXBean dataTree = JMX.newMBeanProxy(mbsc, dataTreeObjectName, DataTreeMXBean.class);
System.out.println("节点总数:" + dataTree.getNodeCount());// 节点总数
System.out.println("Watch总数:" + dataTree.getWatchCount());// Watch总数
System.out.println("临时节点总数:" + dataTree.countEphemerals());// Watch总数
System.out.println("节点名及字符总数:" + dataTree.approximateDataSize());// 节点全路径和值的总字符数
Map<String, String> dataTreeMap = dataTreeObjectName.getKeyPropertyList();
String replicaId = dataTreeMap.get("name1").replace("replica.", "");
String role = dataTreeMap.get("name2");// Follower,Leader,Observer,Standalone
String canonicalName = dataTreeObjectName.getCanonicalName();
int roleEndIndex = canonicalName.indexOf(",name3");
ObjectName roleObjectName = new ObjectName(canonicalName.substring(0, roleEndIndex));
System.out.println("==============zk服务状态===========");
ZooKeeperServerMXBean ZooKeeperServer = JMX.newMBeanProxy(mbsc, roleObjectName, ZooKeeperServerMXBean.class);
System.out.println(role + " 的IP和端口:" + ZooKeeperServer.getClientPort());// IP和端口
System.out.println(role + " 活着的连接数:" + ZooKeeperServer.getNumAliveConnections());// 连接数
System.out.println(role + " 未完成请求数:" + ZooKeeperServer.getOutstandingRequests());// 未完成的请求数
System.out.println(role + " 接收的包:" + ZooKeeperServer.getPacketsReceived());// 收到的包
System.out.println(role + " 发送的包:" + ZooKeeperServer.getPacketsSent());// 发送的包
System.out.println(role + " 平均延迟（毫秒）:" + ZooKeeperServer.getAvgRequestLatency());
System.out.println(role + " 最大延迟（毫秒）:" + ZooKeeperServer.getMaxRequestLatency());
System.out.println(role + " 每个客户端IP允许的最大连接数:" + ZooKeeperServer.getMaxClientCnxnsPerHost());
System.out.println(role + " 最大Session超时（毫秒）:" + ZooKeeperServer.getMaxSessionTimeout());
System.out.println(role + " 心跳时间（毫秒）:" + ZooKeeperServer.getTickTime());
System.out.println(role + " 版本:" + ZooKeeperServer.getVersion());// 版本
// 三个重置操作
// ZooKeeperServer.resetLatency(); //重置min/avg/max latency statistics
// ZooKeeperServer.resetMaxLatency(); //重置最大延迟统计
// ZooKeeperServer.resetStatistics(); // 重置包和延迟所有统计
System.out.println("==============所有客户端的连接信息===========");
ObjectName connectionPattern = new ObjectName("org.apache.ZooKeeperService:name0=ReplicatedServer_id?,name1=replica.?,name2=*,name3=Connections,*");
Set<ObjectName> connectionSets = mbsc.queryNames(connectionPattern, null);
List<ObjectName> connectionList = new ArrayList<ObjectName>(connectionSets.size());
connectionList.addAll(connectionSets);
Collections.sort(connectionList);
for (ObjectName connectionON : connectionList) {
System.out.println("=========================");
ConnectionMXBean connectionBean = JMX.newMBeanProxy(mbsc, connectionON, ConnectionMXBean.class);
System.out.println(" IP+Port:" + connectionBean.getSourceIP());//
System.out.println(" SessionId:" + connectionBean.getSessionId());//
System.out.println(" PacketsReceived:" + connectionBean.getPacketsReceived());// 收到的包
System.out.println(" PacketsSent:" + connectionBean.getPacketsSent());// 发送的包
System.out.println(" MinLatency:" + connectionBean.getMinLatency());//
System.out.println(" AvgLatency:" + connectionBean.getAvgLatency());//
System.out.println(" MaxLatency:" + connectionBean.getMaxLatency());//
System.out.println(" StartedTime:" + connectionBean.getStartedTime());//
System.out.println(" EphemeralNodes:" + connectionBean.getEphemeralNodes().length);//
System.out.println(" EphemeralNodes:" + Arrays.asList(connectionBean.getEphemeralNodes()));//
System.out.println(" OutstandingRequests:" + connectionBean.getOutstandingRequests());//
//connectionBean.resetCounters();
//connectionBean.terminateConnection();
//connectionBean.terminateSession();
}
}
// close connection
if (connector != null) {
connector.close();
}
}
/**
* 建立连接
* @param ip
* @param jmxport
* @return
*/
public static MBeanServerConnection createMBeanServer(String ip,
String jmxport, String userName, String password) {
try {
String jmxURL = "service:jmx:rmi:///jndi/rmi://" + ip + ":"
+ jmxport + "/jmxrmi";
// jmxurl
JMXServiceURL serviceURL = new JMXServiceURL(jmxURL);
Map<String, String[]> map = new HashMap<String, String[]>();
String[] credentials = new String[] { userName, password };
map.put("jmx.remote.credentials", credentials);
connector = JMXConnectorFactory.connect(serviceURL, map);
MBeanServerConnection mbsc = connector.getMBeanServerConnection();
return mbsc;
} catch (IOException ioe) {
ioe.printStackTrace();
System.err.println(ip + ":" + jmxport + " 连接建立失败");
}
return null;
}
/**
* 使用MBeanServer获取对象名为[objName]的MBean的[objAttr]属性值
* <p>
* 静态代码: return MBeanServer.getAttribute(ObjectName name, String attribute)
* @param mbeanServer
* - MBeanServer实例
* @param objName
* - MBean的对象名
* @param objAttr
* - MBean的某个属性名
* @return 属性值
*/
private static String getAttribute(MBeanServerConnection mbeanServer,
ObjectName objName, String objAttr) {
if (mbeanServer == null || objName == null || objAttr == null)
throw new IllegalArgumentException();
try {
return String.valueOf(mbeanServer.getAttribute(objName, objAttr));
} catch (Exception e) {
return null;
}
}
}