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Instructions for installing Docker Engine on RHEL
requirements, apt, installation, rhel, rpm, install, uninstall, upgrade, update, s390x, ibm-z
/ee/docker-ee/rhel/
/engine/installation/linux/docker-ce/rhel/
/engine/installation/linux/docker-ee/rhel/
/engine/installation/linux/rhel/
/engine/installation/rhel/
/engine/installation/rhel/
/install/linux/docker-ee/rhel/
/installation/rhel/
Install Docker Engine on RHEL
4

To get started with Docker Engine on RHEL, make sure you meet the prerequisites, then install Docker.

Prerequisites

Note

We currently only provide packages for RHEL on s390x (IBM Z). Other architectures are not yet supported for RHEL, but you may be able to install the CentOS packages on RHEL. Refer to the Install Docker Engine on CentOS page for details.

OS requirements

To install Docker Engine, you need a maintained version of RHEL 7 or 8 on s390x (IBM Z). Archived versions aren't supported or tested.

The overlay2 storage driver is recommended.

Uninstall old versions

Older versions of Docker were called docker or docker-engine. If these are installed, uninstall them, along with associated dependencies. Also uninstall Podman and the associated dependencies if installed already.

$ sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine \
                  podman \
                  runc

It's OK if yum reports that none of these packages are installed.

The contents of /var/lib/docker/, including images, containers, volumes, and networks, are preserved. The Docker Engine package is now called docker-ce.

Installation methods

You can install Docker Engine in different ways, depending on your needs:

  • Most users set up Docker's repositories and install from them, for ease of installation and upgrade tasks. This is the recommended approach.

  • Some users download the RPM package and install it manually and manage upgrades completely manually. This is useful in situations such as installing Docker on air-gapped systems with no access to the internet.

  • In testing and development environments, some users choose to use automated convenience scripts to install Docker.

Install using the repository

Before you install Docker Engine for the first time on a new host machine, you need to set up the Docker repository. Afterward, you can install and update Docker from the repository.

Set up the repository

{% assign download-url-base = "https://download.docker.com/linux/rhel" %}

Install the yum-utils package (which provides the yum-config-manager utility) and set up the stable repository.

$ sudo yum install -y yum-utils

$ sudo yum-config-manager \
    --add-repo \
    {{ download-url-base }}/docker-ce.repo

Optional: Enable the nightly or test repositories.

These repositories are included in the docker.repo file above but are disabled by default. You can enable them alongside the stable repository. The following command enables the nightly repository.

$ sudo yum-config-manager --enable docker-ce-nightly

To enable the test channel, run the following command:

$ sudo yum-config-manager --enable docker-ce-test

You can disable the nightly or test repository by running the yum-config-manager command with the --disable flag. To re-enable it, use the --enable flag. The following command disables the nightly repository.

$ sudo yum-config-manager --disable docker-ce-nightly

Learn about nightly and test channels.

Install Docker Engine

  1. Install the latest version of Docker Engine and containerd, or go to the next step to install a specific version:

    $ sudo yum install docker-ce docker-ce-cli containerd.io

    If prompted to accept the GPG key, verify that the fingerprint matches 060A 61C5 1B55 8A7F 742B 77AA C52F EB6B 621E 9F35, and if so, accept it.

    Got multiple Docker repositories?

    If you have multiple Docker repositories enabled, installing or updating without specifying a version in the yum install or yum update command always installs the highest possible version, which may not be appropriate for your stability needs.

    This command installs Docker, but it doesn't start Docker. It also creates a docker group, however, it doesn't add any users to the group by default.

  2. To install a specific version of Docker Engine, list the available versions in the repo, then select and install:

    a. List and sort the versions available in your repo. This example sorts results by version number, highest to lowest, and is truncated:

    $ yum list docker-ce --showduplicates | sort -r

docker-ce.s390x                3:20.10.8-3.el8                 docker-ce-stable
docker-ce.s390x                3:20.10.7-3.el8                 docker-ce-stable
<...>

    The list returned depends on which repositories are enabled, and is specific to your version of RHEL (indicated by the .el8 suffix in this example).

    b. Install a specific version by its fully qualified package name, which is the package name (docker-ce) plus the version string (2nd column) starting at the first colon (:), up to the first hyphen, separated by a hyphen (-). For example, docker-ce-20.10.7.

    $ sudo yum install docker-ce-<VERSION_STRING> docker-ce-cli-<VERSION_STRING> containerd.io

    This command installs Docker, but it doesn't start Docker. It also creates a docker group, however, it doesn't add any users to the group by default.

  3. Start Docker.

    $ sudo systemctl start docker

  4. Verify that Docker Engine is installed correctly by running the hello-world image.

    $ sudo docker run hello-world

    This command downloads a test image and runs it in a container. When the container runs, it prints a message and exits.

This installs and runs Docker Engine. Use sudo to run Docker commands. Continue to Linux postinstall to allow non-privileged users to run Docker commands and for other optional configuration steps.

Upgrade Docker Engine

To upgrade Docker Engine, follow the installation instructions, choosing the new version you want to install.

Install from a package

If you cannot use Docker's repository to install Docker, you can download the .rpm file for your release and install it manually. You need to download a new file each time you want to upgrade Docker Engine.

  1. Go to [{{ download-url-base }}/]({{ download-url-base }}/){: target="blank" rel="noopener" class="" } and choose your version of RHEL. Then browse to s390x/stable/Packages/ and download the .rpm file for the Docker version you want to install.

    Note

    To install a nightly or test (pre-release) package, change the word stable in the above URL to nightly or test. Learn about nightly and test channels.

  2. Install Docker Engine, changing the path below to the path where you downloaded the Docker package.

    $ sudo yum install /path/to/package.rpm

    Docker is installed but not started. The docker group is created, but no users are added to the group.

  3. Start Docker.

    $ sudo systemctl start docker

  4. Verify that Docker Engine is installed correctly by running the hello-world image.

    $ sudo docker run hello-world

    This command downloads a test image and runs it in a container. When the container runs, it prints a message and exits.

This installs and runs Docker Engine. Use sudo to run Docker commands. Continue to Post-installation steps for Linux to allow non-privileged users to run Docker commands and for other optional configuration steps.

Upgrade Docker Engine

To upgrade Docker Engine, download the newer package file and repeat the installation procedure, using yum -y upgrade instead of yum -y install, and point to the new file.

{% include install-script.md %}

Uninstall Docker Engine

  1. Uninstall the Docker Engine, CLI, and Containerd packages:

    $ sudo yum remove docker-ce docker-ce-cli containerd.io

  2. Images, containers, volumes, or customized configuration files on your host are not automatically removed. To delete all images, containers, and volumes:

    $ sudo rm -rf /var/lib/docker
$ sudo rm -rf /var/lib/containerd

You must delete any edited configuration files manually.

Next steps