How to install ZooKeeper on FreeBSD Latest

This guide will walk you through the steps to install ZooKeeper on FreeBSD Latest. ZooKeeper is a distributed coordination service that is used to manage a large number of servers.

Prerequisites

Before we begin, let’s make sure that we have all the prerequisites installed.

  • FreeBSD Latest installed
  • Root access to the machine
  • Internet connection

Step 1: Install Java

ZooKeeper requires Java to run. Let’s install OpenJDK 11 using the package manager.

Open the terminal and execute the following command:

pkg install openjdk11

Step 2: Download ZooKeeper

Next, let’s download the latest stable version of ZooKeeper from the official website.

cd /usr/local/src
fetch https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=zookeeper/zookeeper-3.6.2/apache-zookeeper-3.6.2-bin.tar.gz

Step 3: Extract ZooKeeper

Once the download is complete, extract the ZooKeeper tarball using the following command:

tar -xvf apache-zookeeper-3.6.2-bin.tar.gz

Step 4: Set Up ZooKeeper

Next, we need to set up ZooKeeper by creating a configuration file.

Copy the zoo_sample.cfg file to zoo.cfg using the following command:

cd apache-zookeeper-3.6.2-bin/conf
cp zoo_sample.cfg zoo.cfg

Now, open the zoo.cfg file in your favorite text editor and make the following changes:

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

Step 5: Start ZooKeeper

You can now start ZooKeeper using the following command:

cd /usr/local/src/apache-zookeeper-3.6.2-bin
./bin/zkServer.sh start

This will start ZooKeeper in the foreground, using the configuration file we just created.

Step 6: Verify Installation

To verify that ZooKeeper is running correctly, run the following command:

./bin/zkCli.sh

This will start the ZooKeeper client command line interface. If ZooKeeper is running correctly, you should see a prompt like this:

[zk: localhost:2181(CONNECTED) 0]

Conclusion

In this tutorial, we have shown how to install ZooKeeper on FreeBSD Latest. You should now have a fully functional installation of ZooKeeper that can be used to manage distributed servers.