How To Install and Secure Redis on AlmaLinux 9

Redis is an open-source, in-memory data structure store, used as a database, cache, and message broker. This guide will walk you through the installation and security steps for Redis on AlmaLinux 9.

Prerequisites

• A server running AlmaLinux 9.
• A user with sudo privileges.

Step 1: Install Redis

Update your system’s package index and install Redis:

sudo dnf update
sudo dnf install redis

Start and enable Redis to start on boot:

sudo systemctl start redis
sudo systemctl enable redis

Step 2: Secure Redis

Redis is designed to be accessed by trusted clients inside trusted environments. To add a layer of security, you can configure a password and bind Redis to localhost.

Edit the Redis configuration file:

sudo nano /etc/redis.conf

Uncomment the line to bind Redis to localhost:

bind 127.0.0.1

Uncomment the line to require a password and set a strong password:

requirepass yourpassword

Restart Redis to apply the changes:

sudo systemctl restart redis

Step 3: Verify Redis Installation

Check the status of Redis:

sudo systemctl status redis

Connect to Redis using the Redis CLI:

redis-cli

Authenticate with your password:

AUTH yourpassword

Conclusion

You've successfully installed and secured Redis on your AlmaLinux 9 server. For more information on how to use Redis, visit the official Redis documentation.