ZooKeeper安全认证

ZooKeeper的ACL(AUTH)

  • 认证只是针对一个节点

  • ACL【Access Control List】,ZooKeeper作为一个分布式协调框架,其内部存储的都是一些关乎分布式系统运行时状态的元数据,尤其是涉及到一些分布式锁,Master选举和协调等应用场景。我们需要有效的保障ZooKeeper中的数据安全,ZooKeeper提供了三种模式。权限模式、授权对象、权限
  • 权限模式:Scheme,开发人员最多使用的如下四种权限模式:
    • IP:IP模式通过IP地址粒度来进行控制权限,例如配置了:IP,192.168.1.107即表示权限控制都是针对这个IP地址的,同时也支持按网段分配,比如:192.168.1.*
    • Digest:digest是最常用的权限控制模式,也更符合我们对权限控制的认识,其类似于“username:password”形式的权限标识进行权限配置。ZooKeeper会对形式的权限标识先后进行两次编码处理,分别是SHA-1加密算法,BASE64编码
    • World:World是一直最开放的权限控制模式。这种控制模式可以看做为特殊的Digest,它仅仅是一个标识而已
    • Super:超级用户模式,在超级用户模式下可以对ZooKeeper任意进行操作
  • 授权对象:指的是权限赋予的用户或者一个指定的实体,例如IP地址或者机器等。在不同的模式下,授权对象是不同的。这种模式和权限对象一一对应
  • 权限:权限就是指那些通过权限检测后可以被允许执行的操作,在ZooKeeper中,对数据的操作权限分为以下五个大类:CREATEDELETEREADWRITEADMIN​​​​​​
  • package bhz.zookeeper.auth;
    
    import java.util.ArrayList;
    import java.util.List;
    import java.util.concurrent.CountDownLatch;
    import java.util.concurrent.atomic.AtomicInteger;
    
    import org.apache.zookeeper.CreateMode;
    import org.apache.zookeeper.WatchedEvent;
    import org.apache.zookeeper.Watcher;
    import org.apache.zookeeper.Watcher.Event.EventType;
    import org.apache.zookeeper.Watcher.Event.KeeperState;
    import org.apache.zookeeper.ZooDefs.Ids;
    import org.apache.zookeeper.ZooKeeper;
    import org.apache.zookeeper.data.ACL;
    import org.apache.zookeeper.data.Stat;
    /**
     * Zookeeper 节点授权
     * @author(alienware)
     * @since 2019-2-22
     */
    public class ZookeeperAuth implements Watcher {
    
    	/** 连接地址 */
    	final static String CONNECT_ADDR = "192.168.1.42:2181";
    	/** 测试路径 */
    	final static String PATH = "/testAuth";
    	final static String PATH_DEL = "/testAuth/delNode";
    	/** 认证类型 */
    	final static String authentication_type = "digest";
    	/** 认证正确方法 */
    	final static String correctAuthentication = "123456";
    	/** 认证错误方法 */
    	final static String badAuthentication = "654321";
    	
    	static ZooKeeper zk = null;
    	/** 计时器 */
    	AtomicInteger seq = new AtomicInteger();
    	/** 标识 */
    	private static final String LOG_PREFIX_OF_MAIN = "【Main】";
    	
    	private CountDownLatch connectedSemaphore = new CountDownLatch(1);
    	
    	@Override
    	public void process(WatchedEvent event) {
    		try {
    			Thread.sleep(200);
    		} catch (InterruptedException e) {
    			e.printStackTrace();
    		}
    		if (event==null) {
    			return;
    		}
    		// 连接状态
    		KeeperState keeperState = event.getState();
    		// 事件类型
    		EventType eventType = event.getType();
    		// 受影响的path
    		String path = event.getPath();
    		
    		String logPrefix = "【Watcher-" + this.seq.incrementAndGet() + "】";
    
    		System.out.println(logPrefix + "收到Watcher通知");
    		System.out.println(logPrefix + "连接状态:\t" + keeperState.toString());
    		System.out.println(logPrefix + "事件类型:\t" + eventType.toString());
    		if (KeeperState.SyncConnected == keeperState) {
    			// 成功连接上ZK服务器
    			if (EventType.None == eventType) {
    				System.out.println(logPrefix + "成功连接上ZK服务器");
    				connectedSemaphore.countDown();
    			} 
    		} else if (KeeperState.Disconnected == keeperState) {
    			System.out.println(logPrefix + "与ZK服务器断开连接");
    		} else if (KeeperState.AuthFailed == keeperState) {
    			System.out.println(logPrefix + "权限检查失败");
    		} else if (KeeperState.Expired == keeperState) {
    			System.out.println(logPrefix + "会话失效");
    		}
    		System.out.println("--------------------------------------------");
    	}
    	/**
    	 * 创建ZK连接
    	 * 
    	 * @param connectString
    	 *            ZK服务器地址列表
    	 * @param sessionTimeout
    	 *            Session超时时间
    	 */
    	public void createConnection(String connectString, int sessionTimeout) {
    		this.releaseConnection();
    		try {
    			zk = new ZooKeeper(connectString, sessionTimeout, this);
    			//添加节点授权
    			zk.addAuthInfo(authentication_type,correctAuthentication.getBytes());
    			System.out.println(LOG_PREFIX_OF_MAIN + "开始连接ZK服务器");
    			//倒数等待
    			connectedSemaphore.await();
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    	}
    	
    	/**
    	 * 关闭ZK连接
    	 */
    	public void releaseConnection() {
    		if (this.zk!=null) {
    			try {
    				this.zk.close();
    			} catch (InterruptedException e) {
    			}
    		}
    	}
    	
    	/**
    	 * 
    	 * <B>方法名称:</B>测试函数<BR>
    	 * <B>概要说明:</B>测试认证<BR>
    	 * @param args
    	 * @throws Exception
    	 */
    	public static void main(String[] args) throws Exception {
    		
    		ZookeeperAuth testAuth = new ZookeeperAuth();
    		testAuth.createConnection(CONNECT_ADDR,2000);
    		List<ACL> acls = new ArrayList<ACL>(1);
    		for (ACL ids_acl : Ids.CREATOR_ALL_ACL) {
    			acls.add(ids_acl);
    		}
    
    		try {
    			zk.create(PATH, "init content".getBytes(), acls, CreateMode.PERSISTENT);
    			System.out.println("使用授权key:" + correctAuthentication + "创建节点:"+ PATH + ", 初始内容是: init content");
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    		try {
    			zk.create(PATH_DEL, "will be deleted! ".getBytes(), acls, CreateMode.PERSISTENT);
    			System.out.println("使用授权key:" + correctAuthentication + "创建节点:"+ PATH_DEL + ", 初始内容是: init content");
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    
    		// 获取数据
    		getDataByNoAuthentication();
    		getDataByBadAuthentication();
    		getDataByCorrectAuthentication();
    
    		// 更新数据
    		updateDataByNoAuthentication();
    		updateDataByBadAuthentication();
    		updateDataByCorrectAuthentication();
    
    		// 删除数据
    		deleteNodeByBadAuthentication();
    		deleteNodeByNoAuthentication();
    		deleteNodeByCorrectAuthentication();
    		//
    		Thread.sleep(1000);
    		
    		deleteParent();
    		//释放连接
    		testAuth.releaseConnection();
    	}
    	/** 获取数据:采用错误的密码 */
    	static void getDataByBadAuthentication() {
    		String prefix = "[使用错误的授权信息]";
    		try {
    			ZooKeeper badzk = new ZooKeeper(CONNECT_ADDR, 2000, null);
    			//授权
    			badzk.addAuthInfo(authentication_type,badAuthentication.getBytes());
    			Thread.sleep(2000);
    			System.out.println(prefix + "获取数据:" + PATH);
    			System.out.println(prefix + "成功获取数据:" + badzk.getData(PATH, false, null));
    		} catch (Exception e) {
    			System.err.println(prefix + "获取数据失败,原因:" + e.getMessage());
    		}
    	}
    
    	/** 获取数据:不采用密码 */
    	static void getDataByNoAuthentication() {
    		String prefix = "[不使用任何授权信息]";
    		try {
    			System.out.println(prefix + "获取数据:" + PATH);
    			ZooKeeper nozk = new ZooKeeper(CONNECT_ADDR, 2000, null);
    			Thread.sleep(2000);
    			System.out.println(prefix + "成功获取数据:" + nozk.getData(PATH, false, null));
    		} catch (Exception e) {
    			System.err.println(prefix + "获取数据失败,原因:" + e.getMessage());
    		}
    	}
    
    	/** 采用正确的密码 */
    	static void getDataByCorrectAuthentication() {
    		String prefix = "[使用正确的授权信息]";
    		try {
    			System.out.println(prefix + "获取数据:" + PATH);
    			
    			System.out.println(prefix + "成功获取数据:" + zk.getData(PATH, false, null));
    		} catch (Exception e) {
    			System.out.println(prefix + "获取数据失败,原因:" + e.getMessage());
    		}
    	}
    
    	/**
    	 * 更新数据:不采用密码
    	 */
    	static void updateDataByNoAuthentication() {
    
    		String prefix = "[不使用任何授权信息]";
    
    		System.out.println(prefix + "更新数据: " + PATH);
    		try {
    			ZooKeeper nozk = new ZooKeeper(CONNECT_ADDR, 2000, null);
    			Thread.sleep(2000);
    			Stat stat = nozk.exists(PATH, false);
    			if (stat!=null) {
    				nozk.setData(PATH, prefix.getBytes(), -1);
    				System.out.println(prefix + "更新成功");
    			}
    		} catch (Exception e) {
    			System.err.println(prefix + "更新失败,原因是:" + e.getMessage());
    		}
    	}
    
    	/**
    	 * 更新数据:采用错误的密码
    	 */
    	static void updateDataByBadAuthentication() {
    
    		String prefix = "[使用错误的授权信息]";
    
    		System.out.println(prefix + "更新数据:" + PATH);
    		try {
    			ZooKeeper badzk = new ZooKeeper(CONNECT_ADDR, 2000, null);
    			//授权
    			badzk.addAuthInfo(authentication_type,badAuthentication.getBytes());
    			Thread.sleep(2000);
    			Stat stat = badzk.exists(PATH, false);
    			if (stat!=null) {
    				badzk.setData(PATH, prefix.getBytes(), -1);
    				System.out.println(prefix + "更新成功");
    			}
    		} catch (Exception e) {
    			System.err.println(prefix + "更新失败,原因是:" + e.getMessage());
    		}
    	}
    
    	/**
    	 * 更新数据:采用正确的密码
    	 */
    	static void updateDataByCorrectAuthentication() {
    
    		String prefix = "[使用正确的授权信息]";
    
    		System.out.println(prefix + "更新数据:" + PATH);
    		try {
    			Stat stat = zk.exists(PATH, false);
    			if (stat!=null) {
    				zk.setData(PATH, prefix.getBytes(), -1);
    				System.out.println(prefix + "更新成功");
    			}
    		} catch (Exception e) {
    			System.err.println(prefix + "更新失败,原因是:" + e.getMessage());
    		}
    	}
    
    	/**
    	 * 不使用密码 删除节点
    	 */
    	static void deleteNodeByNoAuthentication() throws Exception {
    
    		String prefix = "[不使用任何授权信息]";
    
    		try {
    			System.out.println(prefix + "删除节点:" + PATH_DEL);
    			ZooKeeper nozk = new ZooKeeper(CONNECT_ADDR, 2000, null);
    			Thread.sleep(2000);
    			Stat stat = nozk.exists(PATH_DEL, false);
    			if (stat!=null) {
    				nozk.delete(PATH_DEL,-1);
    				System.out.println(prefix + "删除成功");
    			}
    		} catch (Exception e) {
    			System.err.println(prefix + "删除失败,原因是:" + e.getMessage());
    		}
    	}
    
    	/**
    	 * 采用错误的密码删除节点
    	 */
    	static void deleteNodeByBadAuthentication() throws Exception {
    
    		String prefix = "[使用错误的授权信息]";
    
    		try {
    			System.out.println(prefix + "删除节点:" + PATH_DEL);
    			ZooKeeper badzk = new ZooKeeper(CONNECT_ADDR, 2000, null);
    			//授权
    			badzk.addAuthInfo(authentication_type,badAuthentication.getBytes());
    			Thread.sleep(2000);
    			Stat stat = badzk.exists(PATH_DEL, false);
    			if (stat!=null) {
    				badzk.delete(PATH_DEL, -1);
    				System.out.println(prefix + "删除成功");
    			}
    		} catch (Exception e) {
    			System.err.println(prefix + "删除失败,原因是:" + e.getMessage());
    		}
    	}
    
    	/**
    	 * 使用正确的密码删除节点
    	 */
    	static void deleteNodeByCorrectAuthentication() throws Exception {
    
    		String prefix = "[使用正确的授权信息]";
    
    		try {
    			System.out.println(prefix + "删除节点:" + PATH_DEL);
    			Stat stat = zk.exists(PATH_DEL, false);
    			if (stat!=null) {
    				zk.delete(PATH_DEL, -1);
    				System.out.println(prefix + "删除成功");
    			}
    		} catch (Exception e) {
    			System.out.println(prefix + "删除失败,原因是:" + e.getMessage());
    		}
    	}
    
    	/**
    	 * 使用正确的密码删除节点
    	 */
    	static void deleteParent() throws Exception {
    		try {
    			Stat stat = zk.exists(PATH_DEL, false);
    			if (stat == null) {
    				zk.delete(PATH, -1);
    			}
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    	}
    
    }
    

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转载自blog.csdn.net/Future_LL/article/details/87883916