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kata-containers/install/docker/opensuse-docker-install.md
John L. Jolly e7d2141648 Docs: Remove invalid option from suse guides 
The OpenSUSE and SLES install guide for Docker used the --containerd
option. When this option is used on OpenSUSE Leap 15 or SLES 15, the
following error occurs when starting Docker:

    Failed to connect to containerd: failed to dial
        "/run/containerd/containerd.sock": context deadline exceeded

Removing the --containerd option from the configuration file allows the
Docker daemon to start successfully and a Kata container to be created.

Fixes: #350

Signed-off-by: John L. Jolly <jjolly@suse.com>
2019-01-18 12:35:47 +01:00

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Install Docker for Kata Containers on openSUSE Leap

Note:

  1. Install the latest version of Docker with the following commands:

    Note: This step is only required if Docker is not installed on the system.

    $ sudo zypper -n install libcgroup1
$ sudo zypper -n install docker

    For more information on installing Docker please refer to the Docker Guide.

  2. Configure Docker to use Kata Containers by default with one of the following methods:

    1. systemd

      $ sudo mkdir -p /etc/systemd/system/docker.service.d/
$ cat <<EOF | sudo tee /etc/systemd/system/docker.service.d/kata-containers.conf
[Service]
ExecStart=
ExecStart=/usr/bin/dockerd -D --add-runtime kata-runtime=/usr/bin/kata-runtime --default-runtime=kata-runtime
EOF

    2. Docker daemon.json

      Add the following definitions to /etc/docker/daemon.json:

      {
  "default-runtime": "kata-runtime",
  "runtimes": {
    "kata-runtime": {
      "path": "/usr/bin/kata-runtime"
    }
  }
}

  3. Restart the Docker systemd service with the following commands:

    $ sudo systemctl daemon-reload
$ sudo systemctl restart docker

  4. Run Kata Containers

    You are now ready to run Kata Containers:

    $ sudo docker run busybox uname -a

    The previous command shows details of the kernel version running inside the container, which is different to the host kernel version.