How to Install Redis® on Ubuntu 22.04
Redis® (Remote Dictionary Server) is an open-source, in-memory key-value store that functions as a database, cache, or message broker. It integrates with modern web applications to improve performance and reduce server load by storing frequent queries in memory.
This article explains how to install Redis® on Ubuntu 22.04 and access the database to integrate it with other applications on your server.s
Prerequisites
Before you begin:
Have an Ubuntu 22.04 server.
Access the server using SSH as a non-root user with sudo privileges.s
Install Redis®
Redis® is available in the default package repositories on Ubuntu 22.04. Follow the steps below to install the latest Redis® package on your server.
Update the server's package index.
CONSOLEInstall Redis®.
CONSOLEView the installed Redis® version on your server.
CONSOLEOutput.
Configure Redis®
Redis® listens for connections on the default localhost port 6379. In the following steps, configure Redis® to increase the database limit and restrict connections to the 127.0.0.1 localhost address.
Open the main Redis® configuration file using a text editor such as
nano.CONSOLEFind the following
binddirective and verify that your localhost IPV4127.0.0.1and IPV6::1values are available.INIFind the
portdirective and verify the default Redis® port or modify it to a custom TCP port available on your server.INIFind the following
daemonizedirective and verify that it's set toyesto enable the Redis® service on your server.INI
Save and close the file.
Enable the Redis® server to automatically start at boot time.
CONSOLEStart the Redis® service.
CONSOLEView the Redis® server status and verify it's running.
CONSOLE
Secure Redis®
By default, Redis® does not require authentication, allowing unrestricted access to its databases. Follow the steps below to enable authentication and secure your Redis® server for authorized user access only.
Open the main Redis® configuration file.
CONSOLEFind the following
requirepassdirective, uncomment it, and replacefoobaredwith a strong password of your choice.INISave and close the file.
The above configuration secures your Redis® server by enabling password authentication. To allow multiple users with unique passwords, uncomment the aclfile directive.
Restart the Redis® server to apply your configuration changes.
CONSOLE
Access the Redis® Server
The Redis® server accepts connections via the redis-cli utility or compatible application modules. Follow the steps below to test access by writing sample data to the default database and verify your server configurations.
Connect to the Redis® server.
CONSOLETest access to the server without authentication.
CONSOLEVerify that your request fails with the following output:
Log in to the Redis® server using a valid password set in your configuration. Replace
strong-passwordwith the actual password you set earlier.CONSOLEOutput:
Test access to the database server again.
CONSOLEOutput:
Select a database to use on your server. For example
1.CONSOLECreate a new sample key
testkeywith a value such asGreetings from Vultr!.CONSOLEOutput:
Query the key value from the database.
CONSOLEOutput.
Exit the Redis® CLI.
CONSOLE
Conclusion
In this article, you installed Redis® on your Ubuntu 22.04 server and configured it for secure connections. You can now integrate Redis® with your web applications to serve as a database or cache, enhancing both application and server performance.
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