October 10, 2014 | By the+gnu+linux+evangelist.
GNU/Linux Ubuntu Zookeeper Get Started Guide
The Tutorial shows you Step-by-step How to Getting-Started with Apache Zookeeper in Ubuntu GNU/Linux.
And ZooKeeper for Ubuntu 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.
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1. Installing Zookeeper
How to Install Zookeeper on GNU/Linux
Setting Up Zookeeper for Linux
2. Setting up Target
Making the Zookeeper Data Directory
With:
sudo su -c "mkdir /var/lib/zookeeper"
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. Starting Server
To Start Up the Zookeeper Server
Run:
sudo bin/zkServer.sh start
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. 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. Learning
For More See Zookeeper Programmers Docs
Zookeeper Programmer’s Guide
