docs/ee/docker-ee/ubuntu.md

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Instructions for installing Docker Engine - Enterprise on Ubuntu	requirements, apt, installation, ubuntu, install, uninstall, upgrade, update	/engine/installation/ubuntulinux/ /installation/ubuntulinux/ /engine/installation/linux/ubuntulinux/ /engine/installation/linux/docker-ee/ubuntu/ /install/linux/docker-ee/ubuntu/	Get Docker Engine - Enterprise for Ubuntu	4

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

Prerequisites

Docker Engine - Community users should go to Get Docker Engine - Community for Ubuntu instead of this topic.

To install Docker Engine - Enterprise, you need to know the Docker Engine - Enterprise repository URL associated with your trial or subscription. These instructions work for Docker on Ubuntu and for Docker on Linux, which includes access to Docker Engine - Enterprise for all Linux distributions. To get this information, do the following:

• Go to https://hub.docker.com/my-content.
• Each subscription or trial you have access to is listed. Click the Setup button for Docker Enterprise Edition for Ubuntu.
• Copy the URL from the field labeled Copy and paste this URL to download your Edition.

Use this URL when you see the placeholder text <DOCKER-EE-URL>.

To learn more about Docker Enterprise, see Docker Enterprise Edition{: target="blank" class="" }.

OS requirements

To learn more about software requirements and supported storage drivers, check the compatibility matrix.

Note: IBM Z (s390x) is supported for Docker Engine - Enterprise 17.06.xx only.

Uninstall old versions

Older versions of Docker were called docker or docker-engine. In addition, if you are upgrading from Docker Engine - Community to Docker Engine - Enterprise, remove the Docker Engine - Community package.

$ sudo apt-get remove docker docker-engine docker-ce docker-ce-cli docker.io

It's OK if apt-get 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 - Enterprise package is now called docker-ee.

Extra steps for aufs

For Ubuntu 16.04 and higher, the Linux kernel includes support for overlay2, and Docker Engine - Enterprise uses it as the default storage driver. If you need to use aufs instead, you need to configure it manually. See aufs.

Install Docker Engine - Enterprise

You can install Docker Engine - Enterprise 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 DEB 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.

Install using the repository

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

Set up the repository

1. Update the apt package index.

   $ sudo apt-get update
   

2. Install packages to allow apt to use a repository over HTTPS.

   $ sudo apt-get install \
       apt-transport-https \
       ca-certificates \
       curl \
       software-properties-common
   

3. Temporarily add a $DOCKER_EE_URL variable into your environment. This only persists until you log out of the session. Replace <DOCKER-EE-URL> with the URL you noted down in the prerequisites.

   $ DOCKER_EE_URL="<DOCKER-EE-URL>"
   

4. Temporarily add a $DOCKER_EE_VERSION variable into your environment.

   Note: If you need to run Docker Enterprise 2.0, please see the following instructions:

   • 18.09 - Docker Enterprise Edition 2.1 (Docker Engine, UCP, and DTR).
   • 18.03 - Older Docker Engine - Enterprise only release
   • 17.06 - Docker Enterprise Edition 2.0 (Docker Engine, UCP, and DTR).

   $ DOCKER_EE_VERSION={{ site.docker_ee_version }}
   

5. Add Docker's official GPG key using your customer Docker Engine - Enterprise repository URL.

   $ curl -fsSL "${DOCKER_EE_URL}/ubuntu/gpg" | sudo apt-key add -
   

   Verify that you now have the key with the fingerprint DD91 1E99 5A64 A202 E859 07D6 BC14 F10B 6D08 5F96, by searching for the last eight characters of the fingerprint. Use the command as-is. It works because of the variable you set earlier.

   $ sudo apt-key fingerprint 6D085F96
   
   pub   4096R/0EBFCD88 2017-02-22
         Key fingerprint = DD91 1E99 5A64 A202 E859  07D6 BC14 F10B 6D08 5F96
   uid                  Docker Release (EE deb) <docker@docker.com>
   sub   4096R/6D085F96 2017-02-22
   

6. Use the following command to set up the stable repository. Use the command as-is. It works because of the variable you set earlier.

   Note: The lsb_release -cs sub-command below returns the name of your Ubuntu distribution, such as xenial.

   $ sudo add-apt-repository \
      "deb [arch=$(dpkg --print-architecture)] $DOCKER_EE_URL/ubuntu \
      $(lsb_release -cs) \
      stable-$DOCKER_EE_VERSION"
   

Install Docker Engine - Enterprise

1. Update the apt package index.

   $ sudo apt-get update
   

2. Install the latest version of Docker Engine - Enterprise, or go to the next step to install a specific version. Any existing installation of Docker is replaced.

   Use this command to install the latest version of Docker Engine - Enterprise and containerd:

   $ sudo apt-get install docker-ee docker-ee-cli containerd.io
   

   Warning: If you have multiple Docker repositories enabled, installing or updating without specifying a version in the apt-get install or apt-get update command always installs the highest possible version, which may not be appropriate for your stability needs. {:.warning}

3. On production systems, you should install a specific version of Docker Engine - Enterprise instead of always using the latest. This output is truncated. List the available versions.

   $ apt-cache madison docker-ee
   
   docker-ee | {{ site.docker_ee_version }}.0~ee-0~ubuntu-xenial | <DOCKER-EE-URL>/ubuntu xenial/stable amd64 Packages
   

   The contents of the list depend upon which repositories are enabled, and are specific to your version of Ubuntu (indicated by the xenial suffix on the version, in this example). Choose a specific version to install. The second column is the version string. The third column is the repository name, which indicates which repository the package is from and by extension its stability level. To install a specific version, append the version string to the package name and separate them by an equals sign (=).

   $ sudo apt-get install docker-ee=<VERSION_STRING> docker-ee-cli=<VERSION_STRING> containerd.io
   

   The Docker daemon starts automatically.

4. Verify that Docker 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 an informational message and exits.

Docker Engine - Enterprise is installed and running. The docker group is created but no users are added to it. You need to 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 - Enterprise

To upgrade Docker Engine - Enterprise, follow the steps below:

1. If upgrading to a new major Docker Engine - Enterprise version (such as when going from Docker 18.03.x to Docker 18.09.x), add the new repository{: target="blank" class="" }.

2. Run sudo apt-get update.

3. 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 Engine - Enterprise, you can download the .deb files for your release and install them manually. You need to download a new file or set of files each time you want to upgrade Docker Engine - Enterprise.

1. Go to the Docker Engine - Enterprise repository URL associated with your trial or subscription in your browser. Go to ubuntu/dists/<distribution>/pool/stable-<VERSION> and download the .deb file(s) for the Docker Engine - Enterprise version and architecture you want to install.

   Note: Starting with 19.03, you have to download three .deb files. They are docker-ee-cli_<version>.deb, containerd.io_<version>.deb, and docker-ee_<version>.deb.

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

   $ sudo dpkg -i /path/to/package.deb
   

   Or, if you downloaded the three .deb files, you must install them in the following order:

   $ sudo dpkg -i /path/to/docker-ee-cli_<version>.deb
   $ sudo dpkg -i /path/to/containerd.io_<version>.deb
   $ sudo dpkg -i /path/to/docker-ee_<version>.deb
   

   The Docker daemon starts automatically.

3. Verify that Docker 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 an informational message and exits.

Docker Engine - Enterprise is installed and running. The docker group is created but no users are added to it. You need to 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 - Enterprise

To upgrade Docker Engine - Enterprise, download the newer package file and repeat the installation procedure, pointing to the new file.

Uninstall Docker Engine - Enterprise

1. Uninstall the Docker Engine - Enterprise package.

   $ sudo apt-get purge docker-ee
   

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
   

You must delete any edited configuration files manually.

Next steps

• Continue to Post-installation steps for Linux.
• Continue with the User Guide.