Zookeeper Quick-Start on Gnu/Linux Easy Guide

GNU/Linux Zookeeper Get Started Guide

The Tutorial shows you Step-by-step How to Getting-Started with Apache Zookeeper in GNU/Linux Systems.

And ZooKeeper for Linux 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 & 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. 1. Installing Zookeeper

   How to Install Zookeeper on GNU/Linux

   Setting Up Zookeeper for Linux

   GNU/Linux Zookeeper SetUp Guide

2. 2. Setting up Target

   Making the Zookeeper Data Directory
   With:

   sudo su -c "mkdir /var/lib/zookeeper"

3. 3. Configuring

   Creating the Zookeeper Configuration File
   Access the Target:

   cd /opt/zookeeper

   And make it with the nano Editor:

   sudo 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 :)

4. 4. Starting Server

   To Start Up the Zookeeper Server
   Run:

   sudo bin/zkServer.sh start

5. 5. Connecting to Server

   So to Connect by Java Client to Zookeeper Server
   So to Connect:

   bin/zkCli.sh -server 127.0.0.1:2181

   The Zookeeper Shell Prompt:

   [zkshell: 0]

6. 6. Exploring

   Now to Explore 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

7. 7. Learning

   For More See Zookeeper Programmers Docs

   Zookeeper Programmer’s Guide

   Zoookeeper Docs