• 1.ZooKeeper ACL权限控制


    参考:https://blog.csdn.net/liuxiao723846/article/details/79391650

    ZK 类似文件系统,Client 可以在上面创建节点、更新节点、删除节点等如何做到权限的控制?查阅文档,zk的ack(Access Control List)能够保证权限,但是调研完后发现它不是很好用。

    ACL 权限控制,使用:schema:id:permission 来标识,主要涵盖 3 个方面:

    权限模式(Schema):鉴权的策略
    授权对象(ID)
    权限(Permission)
    其特性如下:
    ZooKeeper的权限控制是基于每个znode节点的,需要对每个节点设置权限
    每个znode支持设置多种权限控制方案和多个权限
    子节点不会继承父节点的权限,客户端无权访问某节点,但可能可以访问它的子节点
    一、接下来,我们逐一讲解schema、id和permission三个知识点。

    1、schema:
    ZooKeeper内置了一些权限控制方案,可以用以下方案为每个节点设置权限:
    方案 描述
    world 只有一个用户:anyone,代表所有人(默认)
    ip 使用IP地址认证
    auth 使用已添加认证的用户认证
    digest 使用“用户名:密码”方式认证
    2、id:
    授权对象ID是指,权限赋予的用户或者一个实体,例如:IP 地址或者机器。授权模式 schema 与 授权对象 ID 之间关系:


    3、权限permission:
    权限 ACL简写 描述
    CREATE c 可以创建子节点
    DELETE d 可以删除子节点(仅下一级节点)
    READ r 可以读取节点数据及显示子节点列表
    WRITE w 可以设置节点数据
    ADMIN a 可以设置节点访问控制列表权限
    二、权限相关命令:
    命令 使用方式 描述
    getAcl getAcl <path> 读取ACL权限
    setAcl setAcl <path> <acl> 设置ACL权限
    addauth addauth <scheme> <auth> 添加认证用户
    三、实战:
    1、World方案:
    1)设置方式

    setAcl <path> world:anyone:<acl>

    2)客户端实例:

    [zk: localhost:2181(CONNECTED) 0] create /node1 1
    Created /node1
     
    [zk: localhost:2181(CONNECTED) 1] getAcl /node1
    'world,'anyone  #默认为world方案
    : cdrwa #任何人都拥有所有权限
     
    #可以用以下方式设置:
    [zk: localhost:2181(CONNECTED) 2] setAcl /node1 world:anyone:cdrwa
    cZxid = 0x19000002a1
    ctime = Thu May 11 22:00:00 CST 2017
    mZxid = 0x19000002a1
    mtime = Thu May 11 22:00:00 CST 2017
    pZxid = 0x19000002a1
    cversion = 0
    dataVersion = 0
    aclVersion = 1
    ephemeralOwner = 0x0
    dataLength = 1
    numChildren = 0

    2、IP方案:

    1)设置方式

    setAcl <path> ip:<ip>:<acl>

    <ip>:可以是具体IP也可以是IP/bit格式,即IP转换为二进制,匹配前bit位,如192.168.0.0/16匹配192.168.*.*
    2)客户端实例

    [zk: localhost:2181(CONNECTED) 0] create /node2 1
    Created /node2
     
    [zk: localhost:2181(CONNECTED) 1] setAcl /node2 ip:192.168.100.1:cdrwa #设置IP:192.168.100.1 拥有所有权限
    cZxid = 0x1900000239
    ctime = Thu May 11 22:00:00 CST 2017
    mZxid = 0x1900000239
    mtime = Thu May 11 22:00:00 CST 2017
    pZxid = 0x1900000239
    cversion = 0
    dataVersion = 0
    aclVersion = 1
    ephemeralOwner = 0x0
    dataLength = 1
    numChildren = 0
     
    [zk: localhost:2181(CONNECTED) 2] getAcl /node2
    'ip,'192.168.100.1
    : cdrwa
     
    #使用IP非 192.168.100.1 的机器
    [zk: localhost:2181(CONNECTED) 0] get /node2
    Authentication is not valid : /node2 #没有权限
     
    [zk: localhost:2181(CONNECTED) 1] delete /node2 #删除成功(因为设置DELETE权限仅对下一级子节点有效,并不包含此节点)

    3、Auth方案
    1)设置方式

    addauth digest <user>:<password> #添加认证用户
    setAcl <path> auth:<user>:<acl>

    2)客户端实例

    [zk: localhost:2181(CONNECTED) 0] create /node3 1
    Created /node3
     
    [zk: localhost:2181(CONNECTED) 1] addauth digest yoonper:123456 #添加认证用户
     
    [zk: localhost:2181(CONNECTED) 2] setAcl /node3 auth:yoonper:cdrwa
    cZxid = 0x19000002b8
    ctime = Thu May 11 22:00:00 CST 2017
    mZxid = 0x19000002b8
    mtime = Thu May 11 22:00:00 CST 2017
    pZxid = 0x19000002b8
    cversion = 0
    dataVersion = 0
    aclVersion = 1
    ephemeralOwner = 0x0
    dataLength = 1
    numChildren = 0
     
    [zk: localhost:2181(CONNECTED) 3] getAcl /node3
    'digest,'yoonper:UvJWhBril5yzpEiA2eV7bwwhfLs=
    : cdrwa
     
    [zk: localhost:2181(CONNECTED) 4] get /node3
    1 #刚才已经添加认证用户,可以直接读取数据,断开会话重连需要重新addauth添加认证用户
    cZxid = 0x1900000418
    ctime = Thu May 11 22:00:00 CST 2017
    mZxid = 0x1900000418
    mtime = Thu May 11 22:00:00 CST 2017
    pZxid = 0x1900000418
    cversion = 0
    dataVersion = 0
    aclVersion = 1
    ephemeralOwner = 0x0
    dataLength = 1
    numChildren = 0
    View Code

    4、Digest方案
    1)设置方式

    setAcl <path> digest:<user>:<password>:<acl>

    这里的密码是经过SHA1及BASE64处理的密文,在SHELL中可以通过以下命令计算:

    echo -n <user>:<password> | openssl dgst -binary -sha1 | openssl base64

    先来计算一个密文

    echo -n yoonper:123456 | openssl dgst -binary -sha1 | openssl base64
    UvJWhBril5yzpEiA2eV7bwwhfLs=

    2)客户端实例

    [zk: localhost:2181(CONNECTED) 0] create /node4 1
    Created /node4
     
    #使用是上面算好的密文密码添加权限:
    [zk: localhost:2181(CONNECTED) 1] setAcl /node4 digest:yoonper:UvJWhBril5yzpEiA2eV7bwwhfLs=:cdrwa
    cZxid = 0x19000002e3
    ctime = Thu May 11 22:00:00 CST 2017
    mZxid = 0x19000002e3
    mtime = Thu May 11 22:00:00 CST 2017
    pZxid = 0x19000002e3
    cversion = 0
    dataVersion = 0
    aclVersion = 1
    ephemeralOwner = 0x0
    dataLength = 1
    numChildren = 0
     
    [zk: localhost:2181(CONNECTED) 2] getAcl /node4
    'digest,'yoonper:UvJWhBril5yzpEiA2eV7bwwhfLs=
    : cdrwa
     
    [zk: localhost:2181(CONNECTED) 3] get /node4
    Authentication is not valid : /node4 #没有权限
     
    [zk: localhost:2181(CONNECTED) 4] addauth digest yoonper:123456 #添加认证用户
     
    [zk: localhost:2181(CONNECTED) 5] get /node4
    1 #成功读取数据
    cZxid = 0x1900000420
    ctime = Thu May 11 22:00:00 CST 2017
    mZxid = 0x1900000420
    mtime = Thu May 11 22:00:00 CST 2017
    pZxid = 0x1900000420
    cversion = 0
    dataVersion = 0
    aclVersion = 1
    ephemeralOwner = 0x0
    dataLength = 1
    numChildren = 0
    
    ————————————————
    版权声明:本文为CSDN博主「赶路人儿」的原创文章,遵循 CC 4.0 BY-SA 版权协议,转载请附上原文出处链接及本声明。
    原文链接:https://blog.csdn.net/liuxiao723846/article/details/79391650
    View Code

    5、java客户单实例:

    import java.io.IOException;  
    import java.util.concurrent.CountDownLatch;  
      
    import org.apache.zookeeper.CreateMode;  
    import org.apache.zookeeper.KeeperException;  
    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 com.zookeeper.utils.CommonParams;  
      
      
    public class Zookeeper_Acl_Create  extends CommonParams implements Watcher {  
      
        private static CountDownLatch latch = new CountDownLatch(1);  
          
        private static CountDownLatch countDownLatch = new CountDownLatch(1);  
          
        private static ZooKeeper zk = null;  
      
        public void syncInit() {  
            try {  
                zk = new ZooKeeper(CONNECTION_IP, 5000,  
                        new Zookeeper_Acl_Create());  
                latch.await();  
                zk.addAuthInfo("digest", "username:password".getBytes());  
                zk.create("/act", "init".getBytes(), Ids.CREATOR_ALL_ACL, CreateMode.EPHEMERAL);  
                ZooKeeper zk3 =  new ZooKeeper(CONNECTION_IP, 5000,  
                        null);  
                zk3.addAuthInfo("digest", "username:password".getBytes());  
                String value2 = new String(zk3.getData("/act", false, null));  
                System.out.println("zk3有权限进行数据的获取" + value2);  
                ZooKeeper zk2 =  new ZooKeeper(CONNECTION_IP, 5000,  
                        null);  
                zk2.addAuthInfo("digest", "super:123".getBytes());  
                zk2.getData("/act", false, null);  
            } catch (InterruptedException e) {  
                e.printStackTrace();  
            } catch (IOException e) {  
                e.printStackTrace();  
            } catch (KeeperException e) {  
                System.out.println("异常:" + e.getMessage());  
                System.out.println("zk2没有权限进行数据的获取");  
                countDownLatch.countDown();  
            }  
        }  
      
        @Override  
        public void process(WatchedEvent event) {  
            if (KeeperState.SyncConnected == event.getState()) {  
                if (event.getType() == EventType.None && null == event.getPath()) {  
                    latch.countDown();  
                }   
            }  
        }  
          
        public static void main(String[] args) throws InterruptedException {  
            Zookeeper_Acl_Create acl_Create = new Zookeeper_Acl_Create();  
            acl_Create.syncInit();  
            countDownLatch.await();  
        }  
      
    }  

    输出:

    zk3有权限进行数据的获取init  
    异常:KeeperErrorCode = NoAuth for /act  
    zk2没有权限进行数据的获取 
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  • 原文地址:https://www.cnblogs.com/robinunix/p/11506719.html
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