Redis Docker image

This container image includes Dockerfile for Redis 3.2 Docker image. Users can choose between RHEL and CentOS based images.

Dockerfile for CentOS is called Dockerfile, Dockerfile for RHEL is called Dockerfile.rhel7.

Environment variables and volumes

TBD

You can also set the following mount points by passing the -v /host:/container:Z flag to Docker.

Notice: When mouting a directory from the host into the container, ensure that the mounted directory has the appropriate permissions and that the owner and group of the directory matches the user UID or name which is running inside the container.

Usage

For this, we will assume that you are using the rhscl/redis-32-rhel7 image. If you want to set only the mandatory environment variables and not store the database in a host directory, execute the following command:

$ docker run -d --name redis_database -p 6379:6379 rhscl/redis-32-rhel7

This will create a container named redis_database. Port 6379 will be exposed and mapped to the host.

If you want your database to be persistent across container executions, also add a -v /host/db/path:/var/lib/redis/data:Z argument. This will be the Redis data directory.

For protecting Redis data by a password, pass REDIS_PASSWORD environment variable to the container like this:

$ docker run -d --name redis_database -e REDIS_PASSWORD=strongpassword rhscl/redis-32-rhel7

Warning: since Redis is pretty fast an outside user can try up to 150k passwords per second against a good box. This means that you should use a very strong password otherwise it will be very easy to break.