ZooKeeper快速入门系列(5) | Zookeeper常用的shell操作
ZooKeeper快速入门系列(5) | Zookeeper常用的shell操作
不温卜火
发布于 2020-10-28 15:16:38
发布于 2020-10-28 15:16:38
文章被收录于专栏：不温卜火
命令基本语法 | 功能描述 |
|---|---|
help | 显示所有操作命令 |
ls path [watch] | 使用 ls 命令来查看当前znode中所包含的内容 |
ls2 path [watch] | 查看当前节点数据并能看到更新次数等数据 |
create | 普通创建 |
create | -s 含有序列 |
create | -e 临时（重启或者超时消失） |
get path [watch] | 获得节点的值 |
set | 设置节点的具体值 |
stat | 查看节点状态 |
delete | 删除节点 |
rmr | 递归删除节点 |
1. 启动客户端
[bigdata@hadoop002 zookeeper-3.4.10]$ bin/zkCli.sh
2. 显示所有操作
[zk: localhost:2181(CONNECTED) 1] help
3. 查看当前znode中所包含的内容
[zk: localhost:2181(CONNECTED) 2] ls /
4. 查看当前节点详细数据
[zk: localhost:2181(CONNECTED) 3] ls2 /
5. 分别创建2个普通节点
[zk: localhost:2181(CONNECTED) 6] create /sanguo "jinlian" Created /sanguo
Node already exists: /sanguo
[zk: localhost:2181(CONNECTED) 7] create /sanguo/shuguo "liubei"
Created /sanguo/shuguo6. 获取节点的值
[zk: localhost:2181(CONNECTED) 8] get /sanguo
[zk: localhost:2181(CONNECTED) 9] get /sanguo/shuguo
7. 创建短暂节点
[zk: localhost:2181(CONNECTED) 10] create -e /sanguo/wuguo "zhouyu"
Created /sanguo/wuguo- 1. 在当前客户端时能查看到的
[zk: localhost:2181(CONNECTED) 11] ls /sanguo
[wuguo, shuguo]- 2. 退出当前客户端然后再重启客户端
[zk: localhost:2181(CONNECTED) 12] quit
[bigdata@hadoop002 zookeeper-3.4.10]$ bin/zkCli.sh- 3. 再次查看根目录下短暂节点已经删除
[zk: localhost:2181(CONNECTED) 0] ls /sanguo
[shuguo]8. 创建带序号的节点
- 1.先创建一个普通的根节点/sanguo/weiguo
[zk: localhost:2181(CONNECTED) 1] create /sanguo/weiguo "caocao"
Created /sanguo/weiguo- 2. 创建带序号的节点
如果原来没有序号节点，序号从0开始依次递增。如果原节点下已有2个节点，则再排序时从2开始，以此类推。
9. 修改节点数据值
[zk: localhost:2181(CONNECTED) 5] set /sanguo/weiguo "simayi"
10. 节点的值变化监听
- 1. 在hadoop004主机上注册监听/sanguo节点数据变化
[zk: localhost:2181(CONNECTED) 26] [zk: localhost:2181(CONNECTED) 8] get /sanguo watch- 2. 在hadoop003主机上修改/sanguo节点的数据
[zk: localhost:2181(CONNECTED) 1] set /sanguo "xisi"- 3. 观察hadoop004主机收到数据变化的监听
WATCHER::
WatchedEvent state:SyncConnected type:NodeDataChanged path:/sanguo- 4. 图解
11. 节点的子节点变化监听(路径变化)
- 1. 在hadoop004主机上注册监听/sanguo节点的子节点变化
[zk: localhost:2181(CONNECTED) 1] ls /sanguo watch
[shuguo, weiguo]- 2. 在hadoop003主机/sanguo节点上创建子节点
[zk: localhost:2181(CONNECTED) 2] create /sanguo/jin "simayi"
Created /sanguo/jin- 3. 观察hadoop004主机收到子节点变化的监听
WATCHER::
WatchedEvent state:SyncConnected type:NodeChildrenChanged path:/sanguo- 4. 图解
12. 删除节点
[zk: localhost:2181(CONNECTED) 4] delete /sanguo/jin13. 递归删除节点
[zk: localhost:2181(CONNECTED) 15] rmr /sanguo/shuguo14. 查看节点状态
[zk: localhost:2181(CONNECTED) 17] stat /sanguo
本篇博客就到这里了,下一篇博客博主将为大家带来Zookeeper的API操作,敬请期待!!!
本文参与 腾讯云自媒体同步曝光计划，分享自作者个人站点/博客。
原始发表：2020/05/02 ，如有侵权请联系 cloudcommunity@tencent.com 删除
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