In this tutorial, we will show you how to install Apache Flink on Ubuntu 20.04 LTS. For those of you who didn’t know, Apache Flink is a framework and distributed processing engine for stateful computations over unbounded and bounded data streams. Flink has been designed to run in all common cluster environments, and perform computations at in-memory speed and at any scale. Apache Flink provides data-source and sink connectors to systems such as Amazon Kinesis, Apache Kafka, Alluxio, HDFS, Apache Cassandra, and ElasticSearch where Apache Flink does not provide its own data-storage system.
This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of Apache Flink on Ubuntu 20.04 (Focal Fossa). You can follow the same instructions for Ubuntu 18.04, 16.04, and any other Debian-based distribution like Linux Mint.
Prerequisites
- A server running one of the following operating systems: Ubuntu 20.04, 18.04, 16.04, and any other Debian-based distribution like Linux Mint.
- It’s recommended that you use a fresh OS install to prevent any potential issues.
- SSH access to the server (or just open Terminal if you’re on a desktop).
- A
non-root sudo useror access to theroot user. We recommend acting as anon-root sudo user, however, as you can harm your system if you’re not careful when acting as the root.
Install Apache Flink on Ubuntu 20.04 LTS Focal Fossa
Step 1. First, make sure that all your system packages are up-to-date by running the following aptcommands in the terminal.
sudo apt update sudo apt upgrade
Step 2. Installing Java.
Apache Flink requires Java to be installed on your server. So first of all, Make sure you have Java installed on your system:
sudo apt install openjdk-11-jdk
Now, check that Java is installed on your system or not using the following command:
java --version
Step 3. Installing Apache Flink on Ubuntu 20.04.
Now run the following command to download the latest Apache Flink installer from the official page:
wget https://dlcdn.apache.org/flink/flink-1.16.0/flink-1.16.0-bin-scala_2.12.tgz tar xzf flink-*.tgz
Next, move to flink-1.13.2 the directory inside an extracted directory then submits the executable file to run the local Flink Cluster:
cd flink-1.16.0/ ./bin/start-cluster.sh
Step 4. Accessing Apache Flink Web Interface.
Once successfully installed, now access the Apache Flink web interface via the following URL http://localhost:8081. You should see the following page:
Congratulations! You have successfully installed Apache Flink. Thanks for using this tutorial for installing Apache Flink on Ubuntu 20.04 LTS Focal Fossa systems. For additional help or useful information, we recommend you check the official Apache Flink website.
