zookeeperc（zookeeper查看所有节点）

## ZooKeeperc: A Command Line Interface for Apache ZooKeeper### IntroductionZooKeeperc is a powerful command-line interface (CLI) tool designed for interacting with Apache ZooKeeper, a distributed coordination service used for managing distributed applications. It provides a user-friendly way to perform common operations such as creating, reading, updating, and deleting data in ZooKeeper nodes.### Features#### Core Operations

Create:

Create new nodes in the ZooKeeper hierarchy, specifying their path, data, and access control lists (ACLs).

Read:

Retrieve data from existing nodes, along with associated metadata like timestamps and ACLs.

Update:

Modify the data of existing nodes, either by setting a new value or appending to the existing data.

Delete:

Remove nodes and their associated data from the ZooKeeper hierarchy.#### Advanced Features

Get and Set ACLs:

Manage permissions and access control for nodes.

Get Children:

List the immediate children of a given node.

Watcher Notifications:

Subscribe to events like data changes or node deletions.

Multiple Server Connections:

Connect to and manage multiple ZooKeeper instances simultaneously.

Shell Mode:

Interact with ZooKeeper in a persistent, interactive shell environment.### UsageZooKeeperc is a standalone executable that requires no additional configuration. It can be invoked directly from the command line with the desired operation and arguments.

Basic Usage:

```bash # Create a node with data zookeeperc create /path/to/node "data"# Read data from a node zookeeperc get /path/to/node# Update the data of a node zookeeperc set /path/to/node "new data"# Delete a node zookeeperc delete /path/to/node ```

Example:

```bash # Connect to the ZooKeeper ensemble zookeeperc -s zookeeper1:2181,zookeeper2:2181,zookeeper3:2181 # Create a node in the "/test" path with "hello" as its data zookeeperc create /test "hello"# Read the data of the node zookeeperc get /test# Output: hello ```#### Command OptionsZooKeeperc offers various command line options to customize its behavior:

-s :

Specify the ZooKeeper ensemble to connect to.

-i :

Set a unique session ID for the connection.

-c :

Set the connection timeout in milliseconds.

-l :

Configure the logging level (INFO, DEBUG, etc.).### Benefits of Using ZooKeeperc

User-friendly:

Its intuitive CLI makes it easy for developers to interact with ZooKeeper.

Efficient:

It provides a fast and efficient way to perform common operations.

Versatile:

It supports a wide range of operations, including advanced features like ACL management and watcher notifications.

Open Source:

It's freely available and open-source, allowing users to contribute to its development.### ConclusionZooKeeperc is a valuable tool for anyone working with Apache ZooKeeper. Its user-friendly interface and powerful features simplify common tasks and empower developers to effectively manage distributed applications. Whether you're managing configuration settings, coordinating tasks, or maintaining distributed locks, ZooKeeperc can help streamline your workflow and make ZooKeeper interactions more efficient.

ZooKeeperc: A Command Line Interface for Apache ZooKeeper

IntroductionZooKeeperc is a powerful command-line interface (CLI) tool designed for interacting with Apache ZooKeeper, a distributed coordination service used for managing distributed applications. It provides a user-friendly way to perform common operations such as creating, reading, updating, and deleting data in ZooKeeper nodes.

Features

Core Operations* **Create:** Create new nodes in the ZooKeeper hierarchy, specifying their path, data, and access control lists (ACLs). * **Read:** Retrieve data from existing nodes, along with associated metadata like timestamps and ACLs. * **Update:** Modify the data of existing nodes, either by setting a new value or appending to the existing data. * **Delete:** Remove nodes and their associated data from the ZooKeeper hierarchy.

Advanced Features* **Get and Set ACLs:** Manage permissions and access control for nodes. * **Get Children:** List the immediate children of a given node. * **Watcher Notifications:** Subscribe to events like data changes or node deletions. * **Multiple Server Connections:** Connect to and manage multiple ZooKeeper instances simultaneously. * **Shell Mode:** Interact with ZooKeeper in a persistent, interactive shell environment.

UsageZooKeeperc is a standalone executable that requires no additional configuration. It can be invoked directly from the command line with the desired operation and arguments.**Basic Usage:**```bash

Create a node with data zookeeperc create /path/to/node "data"

Read data from a node zookeeperc get /path/to/node

Update the data of a node zookeeperc set /path/to/node "new data"

Delete a node zookeeperc delete /path/to/node ```**Example:**```bash

Connect to the ZooKeeper ensemble zookeeperc -s zookeeper1:2181,zookeeper2:2181,zookeeper3:2181

Create a node in the "/test" path with "hello" as its data zookeeperc create /test "hello"

Read the data of the node zookeeperc get /test

Output: hello ```

Command OptionsZooKeeperc offers various command line options to customize its behavior:* **-s :** Specify the ZooKeeper ensemble to connect to. * **-i :** Set a unique session ID for the connection. * **-c :** Set the connection timeout in milliseconds. * **-l :** Configure the logging level (INFO, DEBUG, etc.).

Benefits of Using ZooKeeperc* **User-friendly:** Its intuitive CLI makes it easy for developers to interact with ZooKeeper. * **Efficient:** It provides a fast and efficient way to perform common operations. * **Versatile:** It supports a wide range of operations, including advanced features like ACL management and watcher notifications. * **Open Source:** It's freely available and open-source, allowing users to contribute to its development.

ConclusionZooKeeperc is a valuable tool for anyone working with Apache ZooKeeper. Its user-friendly interface and powerful features simplify common tasks and empower developers to effectively manage distributed applications. Whether you're managing configuration settings, coordinating tasks, or maintaining distributed locks, ZooKeeperc can help streamline your workflow and make ZooKeeper interactions more efficient.