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zookeeper使用super身份对有权限的节点进行操作

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如果客户端设置了权限,那么其它人如果没有授权,就无法对这个节点进行操作。但是对于管理员来说,有没有一种方法,可以对任意节点进行操作呢,答案是有的~
方法简单描述如下:
1. 确认是否开启zookeeper的superDigest模式。方法如下:
首先配置如下启动参数,然后重启server

1
"-Dzookeeper.DigestAuthenticationProvider.superDigest=super:/7ahZf2EjED/untmtb2NRkHhVlA="

2. 在java代码中进行digest模式的授权,方法如下:

1
zkClient.addAuthInfo( "digest", "super:yinshi.nc-1988".getBytes() );

3. 具体样例参见下面:

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import java.util.ArrayList; 
import java.util.List; 
 
import org.apache.zookeeper.WatchedEvent; 
import org.apache.zookeeper.Watcher; 
import org.apache.zookeeper.ZooDefs.Ids; 
import org.apache.zookeeper.data.ACL; 
import org.apache.zookeeper.server.auth.DigestAuthenticationProvider; 
 
/** 
 * Description: ZooKeeper-Authentication Test 
 * @author   nileader / nileader@gmail.com 
 * @Date     Jul 12, 2012 
 */ 
public class DemoAuth2 implements Watcher { 
 
    final static String SERVER_LIST = "127.0.0.1:2181"; 
 
    final static String PATH = "/yinshi_auth_test"; 
    final static String PATH_DEL = "/yinshi_auth_test/will_be_del"; 
 
    final static String authentication_type = "digest"; 
 
    final static String correctAuthentication = "taokeeper:true"; 
    final static String badAuthentication = "taokeeper:errorCode"; 
    final static String superAuthentication = "super:yinshi.nc-1988"; 
 
    static ZkClient zkClient = null; 
 
    public static void main( String[] args ) throws Exception { 
 
        System.out.println( DigestAuthenticationProvider.generateDigest( "super:yinshi.nc-1988" ) ); 
 
        List< ACL > acls = new ArrayList< ACL >( 1 ); 
        for ( ACL ids_acl : Ids.CREATOR_ALL_ACL ) { 
            acls.add( ids_acl ); 
        } 
 
        try { 
            zkClient = new ZkClient( SERVER_LIST, 50000); 
            zkClient.addAuthInfo( authentication_type, correctAuthentication.getBytes() ); 
        } catch ( Exception e ) { 
            // TODO Auto-generated catch block 
            e.printStackTrace(); 
        } 
 
        try { 
            zkClient.createPersistent( PATH, acls, "init content" ); 
            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 { 
            zkClient.createPersistent( PATH_DEL, acls, "待删节点" ); 
            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 ) { 
            // TODO Auto-generated catch block 
            e.printStackTrace(); 
        } 
 
        // 获取数据 
        getDataByNoAuthentication(); 
        getDataByBadAuthentication(); 
        getDataByCorrectAuthentication(); 
        getDataByBadAuthentication(); 
        getDataBySuperAuthentication(); 
// 
//      // 更新数据 
//      updateDataByNoAuthentication(); 
//      updateDataByBadAuthentication(); 
//      updateDataByCorrectAuthentication(); 
// 
//      // 获取数据 
//      getDataByNoAuthentication(); 
//      getDataByBadAuthentication(); 
//      getDataByCorrectAuthentication(); 
// 
//      //删除数据 
//      deleteNodeByBadAuthentication(); 
//      deleteNodeByNoAuthentication(); 
//      deleteNodeByCorrectAuthentication(); 
// 
//      deleteParent(); 
 
        zkClient.close(); 
    } 
 
    /** 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 { 
            System.out.println( prefix + "获取数据:" + PATH ); 
            zkClient = new ZkClient( SERVER_LIST, 50000); 
            zkClient.addAuthInfo( authentication_type, badAuthentication.getBytes() ); 
            System.out.println( prefix + "成功获取数据:" + zkClient.readData( PATH ) ); 
        } 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 ); 
            zkClient = new ZkClient( SERVER_LIST, 50000); 
            System.out.println( prefix + "成功获取数据:" + zkClient.readData( PATH ) ); 
        } 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 ); 
            zkClient = new ZkClient( SERVER_LIST, 50000); 
            zkClient.addAuthInfo( authentication_type, correctAuthentication.getBytes() ); 
            System.out.println( prefix + "成功获取数据:" + zkClient.readData( PATH ) ); 
        } catch ( Exception e ) { 
            System.out.println( prefix + "获取数据失败,原因:" + e.getMessage() ); 
        } 
    } 
 
    /** 采用超级用户的密码 */ 
    static void getDataBySuperAuthentication() { 
        String prefix = "[使用超级用户的授权信息]"; 
        try { 
            System.out.println( prefix + "获取数据:" + PATH ); 
            zkClient = new ZkClient( SERVER_LIST, 50000); 
            zkClient.addAuthInfo( authentication_type, superAuthentication.getBytes() ); 
            System.out.println( prefix + "成功获取数据:" + zkClient.readData( PATH ) ); 
        } 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 { 
            zkClient = new ZkClient( SERVER_LIST, 50000); 
            if( zkClient.exists( PATH ) ){ 
                zkClient.writeData( PATH, prefix ); 
                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 { 
            zkClient = new ZkClient( SERVER_LIST, 50000); 
            zkClient.addAuthInfo( authentication_type, badAuthentication.getBytes() ); 
            if( zkClient.exists( PATH ) ){ 
                zkClient.writeData( PATH, prefix ); 
                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 { 
            zkClient = new ZkClient( SERVER_LIST, 50000); 
            zkClient.addAuthInfo( authentication_type, correctAuthentication.getBytes() ); 
            if( zkClient.exists( PATH ) ){ 
                zkClient.writeData( PATH, prefix ); 
                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 ); 
            zkClient = new ZkClient( SERVER_LIST, 50000); 
            if( zkClient.exists( PATH_DEL ) ){ 
                zkClient.delete( PATH_DEL ); 
                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 ); 
            zkClient = new ZkClient( SERVER_LIST, 50000); 
            zkClient.addAuthInfo( authentication_type, badAuthentication.getBytes() ); 
            if( zkClient.exists( PATH_DEL ) ){ 
                zkClient.delete( PATH_DEL ); 
                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 ); 
            zkClient = new ZkClient( SERVER_LIST, 50000); 
            zkClient.addAuthInfo( authentication_type, correctAuthentication.getBytes() ); 
            if( zkClient.exists( PATH_DEL ) ){ 
                zkClient.delete( PATH_DEL ); 
                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 { 
            zkClient = new ZkClient( SERVER_LIST, 50000); 
            zkClient.addAuthInfo( authentication_type, correctAuthentication.getBytes() ); 
            if( zkClient.exists( PATH ) ){ 
                zkClient.delete( PATH ); 
            } 
        } catch ( Exception e ) { 
            e.printStackTrace(); 
        } 
    } 
 
    @Override 
    public void process( WatchedEvent event ) { 
        // TODO Auto-generated method stub 
 
    } 
 
 
 
 
 
}

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zookeeper使用super身份对有权限的节点进行操作:等您坐沙发呢!

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