The first step is to connect to the client
zkCli.sh -server Slave1:2181`
I have configured the environment variables, you can use zkCli.sh directly, you need to enter the zookeeper bin for execution without configuration
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Create nodes:
There are four types of nodes: permanent nodes, temporary nodes, permanent serialized nodes, and temporary serialized nodes
create [-s] [-e] path data # -s 序列化 -e 临时节点 path 创建路径 data 节点数据
Create a permanent serialization node
ls path #显示path 下所有节点
Show all files in the root path
ls2 path # 查看path 下所有znode,以及zonde的属性
get path #获取path 对应Znode的数据和属性
Modify value
set path data #修改值
Delete node
detele path # 删除节点
Recursively delete nodes
rmr path #循环删除节点
history #列出历史记录
Node attributes
dataVersion : data version number. Each time you perform a set operation on a node, the value of dataVersion will increase by 1 (even if the same data is set), which can effectively avoid the sequence problem when data is updated.
cversion : The version number of the child node. When the child nodes of znode change, the value of cversion will increase by 1.
aclVersion : ACL version number.
cZxid : The transaction id created by Znode.
mZxid : The transaction id of the Znode being modified, that is, the mZxid will be updated every time the znode is modified.
●For zk, every change will produce a unique transaction id, zxid (ZooKeeper TransactionId). Through zxid, you can determine the order of update operations. For example, if zxid1
● is less than zxid2, it means that the zxid1 operation occurred before zxid2, and zxid is unique for the entire zk,
ctime : the timestamp when the node was created
mtime : the latest node-the timestamp when the update occurred.
ephemeralowner : if this The node is a temporary node, and the ephemeralOwner value indicates the session id bound to the node. If it is not, the ephemeralOwner value is 0.