In this guide we are going to explore how to run Redis 6 locally with docker and docker compose. This can be helpful if you want to run Redis locally without installing it in your server or if you want to run multiple versions of Redis seamlessly.
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To follow along, ensure you have the following:
- Docker installed locally and permissions to use it to launch containers
- Docker compose is installed locally
- Basic knowledge of the command line
Table of content
- Using the
- Using the
1. Using the docker run command
We are going to use the
docker run command to achieve our goal. The version of Redis that we want is
redis:6.2-alpine – a minimal version of Redis container.
❯ docker run -d \ --name my-redis \ -p 6379:6379 \ redis:6.2-alpine \ redis-server --save 60 1 --requirepass MDNcVb924a --loglevel warning Unable to find image 'redis:6.2-alpine' locally 6.2-alpine: Pulling from library/redis a0d0a0d46f8b: Already exists a04b0375051e: Pull complete cdc2bb0f9590: Pull complete 0aa2a8e7bd65: Pull complete f64034a16b58: Pull complete 7b9178a22893: Pull complete Digest: sha256:58132ff3162cf9ecc8e2042c77b2ec46f6024c35e83bda3cabde76437406f8ac Status: Downloaded newer image for redis:6.2-alpine 57ba51f4a23615ebde5f3063b04296021c3d43a78a45658b4a020af161d93c96
In the above command:
-dinstructs docker container to run as a detached process. It run container in background and print container ID
-pis for port mapping. We are instructing the container to expose the container port externally. Container port
6379is mapped to host port
6379. That means the service can be accessed through
redis:6.2-alpinedefines the image that we are running. We are running redis image version 6.2 – alpine image (a minimal version).
- The remaining commands (
redis-server --save 60 1 --requirepass MDNcVb924a --loglevel warning) defines the command to execute when the container starts. In our case, we are defining the default command with the redis-server command passing arguments to save data every 60 seconds and specifying a password for our redis.
To check that our container is running as expected, use the
docker ps command:
➜ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 57ba51f4a236 redis:6.2-alpine "docker-entrypoint.s…" 5 minutes ago Up 5 minutes 0.0.0.0:6379->6379/tcp, :::6379->6379/tcp my-redis
In my case the container is running as
my-redis the name we gave it. We can login to the container using the
docker exec command while executing
/bin/bash interactively. Here we are also logging in to posgtres with the credentials we specified above and checking the version.
❯ docker exec -it my-redis /bin/sh /data # redis-cli 127.0.0.1:6379> auth MDNcVb924a OK 127.0.0.1:6379> keys * (empty array) 127.0.0.1:6379>
If you need to clean up the container when not in use, you can stop and remove the container using this command:
docker stop my-redis # Removing docker rm my-redis
2. Using the docker-compose tool
We can achieve the same functionality with
docker-compose. Docker Compose is a tool for defining and running multi-container Docker applications. With Compose, you use a YAML file to configure your application’s services.
Docker Compose allows you to define the service (Redis in our case) with properties like the
image to use,
command to overide the default Dockerfile command and and
ports to expose.
Here is how we would use
docker-compose to achieve the functionality above. Save this as
version: '3.9' services: redis: image: redis:6.2-alpine ports: - 6379:6379 command: redis-server --save 60 1 --requirepass MDNcVb924a --loglevel warning
Now bring up the containers:
➜ docker-compose up -d Creating network "red_default" with the default driver Creating red_redis_1 ... done
upbrings up the container
-din a detached mode
Verify the container processes using the ps command:
➜ docker-compose ps Name Command State Ports ----------------------------------------------------------------------------------------------- red_redis_1 docker-entrypoint.sh redis ... Up 0.0.0.0:6379->6379/tcp,:::6379->6379/tcp
To login to the container and login to redis, use this:
❯ docker-compose exec redis /bin/sh /data # redis-cli 127.0.0.1:6379> auth MDNcVb924a OK 127.0.0.1:6379> keys * (empty array) 127.0.0.1:6379>
In this guide we managed to run Redis 6 as a container in our system, we explored using the
docker run command while passing the required arguments an alternative approach of simplifying the process with