Secure Redis with Custom User & Password in Docker Compose (2026)

Redis is a popular in-memory data store known for its speed and efficiency. However, securing Redis in a production environment is crucial, especially when deploying with Docker. By default, Redis comes with a default user and no password, which poses significant security risks. In this tutorial, you'll learn how to disable the default user and set up a custom user with a strong password using Docker Compose.

Key Takeaways

• Learn how to secure Redis by disabling the default user.
• Create and configure a custom Redis user with a strong password.
• Understand the configuration of Redis in a Docker Compose setup.
• Gain insights into troubleshooting common Redis security issues.

Introduction

Securing Redis is an essential step for any developer or system administrator deploying applications that rely on this high-performance data store. By default, Redis does not enforce authentication, which can lead to unauthorized access to your data. This tutorial guides you through setting up a Docker Compose configuration that disables the default user and establishes a new user with a robust password. This approach enhances the security of your Redis instance, making it more resilient against unauthorized access.

Whether you are deploying Redis for a small project or a large-scale application, understanding how to manage users and passwords will improve your deployment's security posture. This tutorial assumes you have a basic understanding of Docker and Docker Compose, but you don't need to be an expert.

Prerequisites

• Basic familiarity with Docker and Docker Compose.
• A working installation of Docker and Docker Compose on your machine.
• Access to a terminal or command-line interface.
• Internet connection to pull Docker images.

Step 1: Create a Docker Compose File

Start by creating a docker-compose.yml file. This file will define your Redis service. In this example, we'll use Redis version 6.2, which supports user management features.

version: '3.8'
services:
  redis:
    image: redis:6.2
    command: redis-server /usr/local/etc/redis/redis.conf
    ports:
      - "6379:6379"
    volumes:
      - ./redis.conf:/usr/local/etc/redis/redis.conf

Step 2: Configure Redis with Users

Next, create a redis.conf file in the same directory as your docker-compose.yml. This configuration file will contain the settings to disable the default user and set up a custom user with a strong password.

# Disable default user
disable-commands CLIENT

# ACL configuration
user default on nopass ~* >all
user customuser on >STRONGPASSWORD ~* >all

In this configuration:

• disable-commands CLIENT disables the default user capabilities.
• user customuser on >STRONGPASSWORD ~* >all defines a new user named customuser with a strong password. Replace STRONGPASSWORD with a secure password of your choice.

Step 3: Build and Run the Docker Compose Setup

With your configuration files in place, you can now build and run your Docker Compose setup. Use the following command:

docker-compose up -d

This command will start the Redis service in the background. You can verify that Redis is running and properly configured by checking the logs:

docker-compose logs redis

Look for any errors related to user configuration, which will indicate if there is an issue with your setup.

Step 4: Connect to Redis with the Custom User

To connect to your Redis instance using the custom user, you can use the Redis CLI tool. Run the following command:

docker exec -it <container_id> redis-cli -u redis://customuser:STRONGPASSWORD@localhost:6379

Replace <container_id> with your Redis container's ID. This command allows you to access Redis using the credentials you configured earlier.

Common Errors/Troubleshooting

• Authentication Errors: Ensure that the password in your redis.conf matches the one you use in the Redis CLI command.
• Connection Refused: Verify that Redis is running and accessible on the specified port.
• Configuration Syntax Errors: Check your redis.conf for any typos or syntax issues.

Conclusion

By following this tutorial, you have successfully secured your Redis instance by disabling the default user and creating a custom user with a strong password. This setup enhances the security of your Redis deployment, helping to protect your data from unauthorized access. Always ensure your passwords are strong and update them regularly to maintain security.

Frequently Asked Questions

Why should I disable the default Redis user?

Disabling the default Redis user helps to prevent unauthorized access and enhances the security of your data store.

What is a strong password for Redis?

A strong password is typically at least 12 characters long, includes a mix of uppercase and lowercase letters, numbers, and special characters.

Can I use this setup in a production environment?

Yes, this setup is suitable for production environments. Ensure that your configuration files are secure and not exposed to unauthorized users.