How to Install ClickHouse on Ubuntu 22.04

ClickHouse is an open-source columnar database management system designed for high-performance data analytics. In this tutorial, we will guide you through the process of installing ClickHouse on Ubuntu 22.04.

Prerequisites

1. A Ubuntu 22.04 server with root privileges.
2. Basic knowledge of the Linux command line.

Step 1: Update System Packages

Before installing any software, it’s important to ensure your system’s packages are up to date. Open a terminal and run the following commands:

sudo apt update
sudo apt upgrade

Step 2: Add ClickHouse Repository

ClickHouse provides official repositories for various Linux distributions, including Ubuntu. Add the ClickHouse repository and import its GPG key with the following commands:

sudo apt install apt-transport-https
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv E0C56BD4
echo "deb https://repo.clickhouse.tech/deb/stable/ main/" | sudo tee /etc/apt/sources.list.d/clickhouse.list

Step 3: Install ClickHouse Server

After adding the repository, update your package list and install ClickHouse server:

sudo apt update
sudo apt install clickhouse-server clickhouse-client

Step 4: Configure ClickHouse

ClickHouse’s main configuration file is located at /etc/clickhouse-server/config.xml. Use your preferred text editor to edit this file and make necessary configurations.

Step 5: Start ClickHouse Server

Enable and start the ClickHouse server using the following commands:

sudo systemctl enable clickhouse-server
sudo systemctl start clickhouse-server

Step 6: Test ClickHouse

You can test if ClickHouse is running properly by using the ClickHouse client. Run the following command:

clickhouse-client

This will open the ClickHouse client console. You can execute SQL queries here to interact with the database.

Step 7: Configure Firewall

If you have a firewall enabled, make sure to allow connections to ClickHouse’s ports (e.g., 8123 for HTTP interface and 9000 for native interface).

Conclusion

You have successfully installed ClickHouse on your Ubuntu 22.04 server. ClickHouse is now ready to store and process your analytical data efficiently. Remember that this guide covers a basic installation. Depending on your use case, you might need to explore further configurations and optimizations to maximize ClickHouse’s capabilities.