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This commit calls out specific configurations used for the validation. Tracked-On: #4879 Signed-off-by: Tonny Tzeng <tonny.tzeng@intel.com>
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153 lines
5.1 KiB
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.. _run-kata-containers:
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Run Kata Containers on a Service VM
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###################################
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This tutorial describes how to install, configure, and run `Kata Containers
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<https://katacontainers.io/>`_ on the Ubuntu based Service VM with the ACRN
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hypervisor. In this configuration,
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Kata Containers leverage the ACRN hypervisor instead of QEMU which is used by
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default. Refer to the `Kata Containers with ACRN
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<https://drive.google.com/file/d/1ZrqM5ouWUJA0FeIWhU_aitEJe8781rpe/view?usp=sharing>`_
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presentation from a previous ACRN Project Technical Community Meeting for
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more details on Kata Containers and how the integration with ACRN has been
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done.
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Prerequisites
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**************
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#. Refer to the :ref:`ACRN supported hardware <hardware>`.
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#. For a default prebuilt ACRN binary in the E2E package, you must have 4
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CPU cores or enable "CPU Hyper-Threading" in order to have 4 CPU threads for 2 CPU cores.
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#. Follow :ref:`these instructions <Ubuntu Service OS>` to set up the ACRN Service VM
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based on Ubuntu, this article is validated on the following configurations.
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Please note that only ACRN hypervisors compiled for
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SDC scenario support Kata Containers currently.
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- ACRN v1.6.1 (tag: acrn-2020w18.4-140000p)
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- Ubuntu 18.04.4
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Install Docker
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**************
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The following instructions install Docker* on the Ubuntu Service VM.
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Refer to the `Get Docker Engine - Community for Ubuntu
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<https://docs.docker.com/engine/install/ubuntu/>`_
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installation guide for detailed information.
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#. Install the following prerequisite packages:
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.. code-block:: none
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$ sudo apt-get install apt-transport-https ca-certificates curl
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#. Run the following commands to add Docker's official GPG key,
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set up the repository, and install the Docker Engine - Community
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from the repository:
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.. code-block:: none
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$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
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$ sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
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$ sudo apt-get update
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$ sudo apt-get install -y docker-ce docker-ce-cli containerd.io
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Install Kata Containers
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***********************
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Kata Containers provide a variety of installation methods, this guide uses
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:command:`kata-manager` to automate the Kata Containers installation procedure.
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#. Install Kata Containers packages:
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.. code-block:: none
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$ bash -c "$(curl -fsSL https://raw.githubusercontent.com/kata-containers/tests/master/cmd/kata-manager/kata-manager.sh) install-packages"
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#. Add the following settings to :file:`/etc/docker/daemon.json` to configure
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Docker to use Kata Containers by default. You may need to create the
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file if it doesn't exist.
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.. code-block:: none
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{
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"storage-driver": "devicemapper",
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"default-runtime": "kata-runtime",
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"runtimes": {
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"kata-runtime": {
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"path": "/usr/bin/kata-runtime"
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}
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}
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}
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In order to run Kata with ACRN, the container stack must provide block-based
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storage, such as :file:`device-mapper`. Since Docker may be configured to
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use :file:`overlay2` storage driver, the above configuration also instructs
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Docker to use :file:`devive-mapper` storage driver.
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#. Configure Kata to use ACRN.
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.. code-block:: none
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$ sudo mkdir -p /etc/kata-containers
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$ sudo cp /usr/share/defaults/kata-containers/configuration-acrn.toml /etc/kata-containers/configuration.toml
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#. Restart the Docker service.
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.. code-block:: none
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$ sudo systemctl restart docker
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Verify that these configurations are effective by checking the following
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outputs:
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.. code-block:: none
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$ sudo docker info | grep runtime
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WARNING: the devicemapper storage-driver is deprecated, and will be
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removed in a future release.
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WARNING: devicemapper: usage of loopback devices is strongly discouraged
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for production use.
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Use `--storage-opt dm.thinpooldev` to specify a custom block storage device.
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Runtimes: kata-runtime runc
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.. code-block:: none
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$ kata-runtime kata-env | awk -v RS= '/\[Hypervisor\]/'
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[Hypervisor]
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MachineType = ""
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Version = "DM version is: 1.5-unstable-"2020w02.5.140000p_261" (daily tag:"2020w02.5.140000p"), build by mockbuild@2020-01-12 08:44:52"
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Path = "/usr/bin/acrn-dm"
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BlockDeviceDriver = "virtio-blk"
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EntropySource = "/dev/urandom"
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Msize9p = 0
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MemorySlots = 10
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Debug = false
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UseVSock = false
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SharedFS = ""
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Run a Kata Container with ACRN
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******************************
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The system is now ready to run a Kata Container on ACRN. Note that a reboot
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is recommended after the installation.
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Before running a Kata Container on ACRN, you must offline at least one CPU:
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.. code-block:: none
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$ curl -O https://raw.githubusercontent.com/kata-containers/documentation/master/how-to/offline_cpu.sh
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$ chmod +x ./offline_cpu.sh
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$ sudo ./offline_cpu.sh
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Start a Kata Container on ACRN:
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.. code-block:: none
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$ sudo docker run -ti --runtime=kata-runtime busybox sh
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If you run into problems, contact us on the ACRN mailing list and provide as
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much detail as possible about the issue. The output of ``sudo docker info``
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and ``kata-runtime kata-env`` is useful.
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