How to Install Redis on Ubuntu 25

Redis is an in-memory key–value data store commonly used for caching, queues, sessions, and real-time analytics. Ubuntu 25 includes Redis in its official repositories, so installation is clean and reliable.

Step 1: Update System Packages

Start with an updated system to avoid dependency issues.

sudo apt update && sudo apt upgrade -y

Step 2: Install Redis Server

Install Redis directly from Ubuntu repositories:

sudo apt install -y redis-server

This installs both the Redis server and CLI tools.

Step 3: Enable and Start Redis Service

Make sure Redis starts automatically on boot and is running now:

sudo systemctl enable --now redis-server

Check status:

systemctl status redis-server

You should see active (running).

Step 4: Test Redis Installation

Verify Redis is responding correctly:

redis-cli ping

Expected output:

PONG

This confirms Redis is working.

Step 5: Configure Redis for Supervised Systemd

Ubuntu uses systemd, so Redis should be supervised correctly.

Edit the config file:

sudo nano /etc/redis/redis.conf

Find and set:

supervised systemd

Restart Redis:

sudo systemctl restart redis-server

Step 6: Basic Security Configuration

Redis should not be exposed publicly.

Confirm it listens only on localhost:

grep bind /etc/redis/redis.conf

Expected:

bind 127.0.0.1 ::1

If needed, edit:

sudo nano /etc/redis/redis.conf

Set:

bind 127.0.0.1 ::1
protected-mode yes

Restart Redis:

sudo systemctl restart redis-server

Step 7: Verify Redis Is Not Publicly Accessible

Check listening ports:

ss -tulnp | grep 6379

Redis should only be bound to localhost.

Optional Step: Set a Redis Password

If Redis is used by multiple local services, add authentication.

Edit config:

sudo nano /etc/redis/redis.conf

Set:

requirepass StrongPasswordHere

Restart Redis:

sudo systemctl restart redis-server

Test authentication:

redis-cli
AUTH StrongPasswordHere
PING