How to Install ZooKeeper on Alpine Linux Latest

ZooKeeper is a distributed coordination service that is used to manage and synchronize nodes in a distributed system. In this tutorial, we will learn how to install ZooKeeper on Alpine Linux Latest.

Prerequisites

Before we start with the installation process, you need to ensure that you have the following prerequisites:

  • A running instance of Alpine Linux Latest
  • A user account with sudo privileges or a root user account

Step 1 - Install Java

ZooKeeper requires Java to be installed on the system. To install Java on Alpine Linux, run the following commands:

sudo apk update
sudo apk add openjdk8

Once the installation is complete, verify the installation by checking the version of Java.

java -version

Step 2 - Download and Extract ZooKeeper

  1. First, visit the official website of Apache ZooKeeper and copy the download link for the latest stable release.

  2. Next, use wget to download the tar.gz archive using the copied link:

sudo wget https://downloads.apache.org/zookeeper/zookeeper-3.7.0/apache-zookeeper-3.7.0-bin.tar.gz
  1. After the download is complete, extract the archive using the following command:
sudo tar -xvzf apache-zookeeper-3.7.0-bin.tar.gz

This command will extract the archive in the current working directory.

Step 3 - Configure ZooKeeper

  1. From the extracted directory, navigate to the conf directory, and copy the zoo_sample.cfg file to zoo.cfg.
cd apache-zookeeper-3.7.0-bin/conf/
cp zoo_sample.cfg zoo.cfg
  1. Next, open the zoo.cfg file and modify the dataDir and clientPort properties.
nano zoo.cfg

Update the following properties:

dataDir=/var/lib/zookeeper
clientPort=2181

Step 4 - Create Data Directory

Create a directory for ZooKeeper data:

sudo mkdir -p /var/lib/zookeeper/
sudo chown -R "$USER:$USER" /var/lib/zookeeper/

Step 5 - Start ZooKeeper Service

  1. To start ZooKeeper, navigate to the extracted directory and then navigate to the bin directory.
cd ../bin
  1. Start the ZooKeeper service using the following command:
./zkServer.sh start

You should see the following output:

ZooKeeper JMX enabled by default
Using config: /root/apache-zookeeper-3.7.0-bin/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
  1. To verify the status of the ZooKeeper service, use the following command:
./zkServer.sh status

You should see the following output:

ZooKeeper JMX enabled by default
Using config: /root/apache-zookeeper-3.7.0-bin/bin/../conf/zoo.cfg
Mode: standalone

Congratulations! You have successfully installed and configured Apache ZooKeeper on Alpine Linux Latest.