Apache Zookeeper Quick-Start on Debian GNU+Linux Easy Guide

Quick-Start Zookeeper for Debian

The Tutorial shows you Step-by-step How to Getting-Started with Apache Zookeeper on Debian 6-Squeeze/7-Wheezy/8-Jessie/9-Stretch/10-Buster/11-Bullseye GNU/Linux Desktop/Server.

ZooKeeper allows distributed processes to coordinate with each other through a shared hierarchal namespace which is organized similarly to a standard file system. The name space consists of data registers – called znodes, in ZooKeeper parlance – and these are similar to files and directories. Unlike a typical file system, which is designed for storage, ZooKeeper data is kept in-memory, which means ZooKeeper can acheive high throughput and low latency numbers.

1. How to Install Zookeeper on Debian Linux

   Setting Up Zookeeper for Debian

   Zookeeper SetUp Debian.

2. Open a Shell Session
   (Press “Enter” to Execute Commands)

   

3. Making the Zookeeper Data Directory

   sudo mkdir /var/lib/zookeeper

   If Got “User is Not in Sudoers file” then see: How to Enable sudo

4. Creating the Zookeeper Configuration File

   cd /opt/zookeeper

   su -c "nano conf/zoo.cfg"

   Append for Example:

   tickTime=2000
   dataDir=/var/lib/zookeeper
   clientPort=2181
   

   tickTime: the basic time unit in milliseconds used by ZooKeeper. It is used to do heartbeats and the minimum session timeout will be twice the tickTime.
   Ctrl+x to Save & Exit from nano Editor :)

5. Starting Up the Zookeeper Server

   cd /opt/zookeeper

   sudo bin/zkServer.sh start

6. Connecting by Java Client to Zookeeper Server

   bin/zkCli.sh -server 127.0.0.1:2181

   The Zookeeper Shell Prompt:

   [zkshell: 0]

7. Exploring Zookeeper Shell.

   Showing Up Commands:

   [zkshell: 0] help

   Create a Z-Node:

   [zkshell: 0] create /zk_node my_data

   Listing the Z-Nodes:

   [zkshell: 0] ls /

   Showing the Data Associated to a Z-Node:

   [zkshell: 0] get /zk_node

   The Output will Show up: “my_data” as First, entry.
   Changing the Data Associated to a Z-Node:

   [zkshell: 0] set /zk_node hello

   Deleting a Z-Node:

   [zkshell: 0] delete /zk_node

8. For More See Zookeeper Programmers Docs

   Zookeeper Programmer’s Guide

   Zoookeeper Docs.