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Testing Docker Release 19.03.0 Beta 1

How to install latest Docker 19.03.0 Beta 1 Test Build
Support for docker context
Support for rootless Docker
Support for --gpu runtime option in Docker 19.03.0 Beta 3

Testing Docker Release 19.03.0 Beta 3

How to build ARM-based Docker Image using docker buildx?

How to install latest Docker 19.03.0 Beta 1 Test Build?

Downloading the static binary archive.

Go to https://download.docker.com/linux/static/stable/ (or change stable to nightly or test), choose your hardware platform, and download the .tgz file relating to the version of Docker CE you want to install.

Captain'sBay==>wget https://download.docker.com/linux/static/test/x86_64/docker-19.03.0-beta1.tgz
--2019-04-10 09:20:01--  https://download.docker.com/linux/static/test/x86_64/docker-19.03.0-beta1.tgz
Resolving download.docker.com (download.docker.com)... 54.230.75.15, 54.230.75.117, 54.230.75.202, ...
Connecting to download.docker.com (download.docker.com)|54.230.75.15|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 62701372 (60M) [application/x-tar]
Saving to: ‘docker-19.03.0-beta1.tgz’
docker-19.03.0-beta1.tgz  100%[=====================================>]  59.80M  10.7MB/s    in 7.1s    
2019-04-10 09:20:09 (8.38 MB/s) - ‘docker-19.03.0-beta1.tgz’ saved [62701372/62701372]

Extract the archive

You can use the tar utility. The dockerd and docker binaries are extracted.

Captain'sBay==>tar xzvf docker-19.03.0-beta1.tgz 
docker/
docker/ctr
docker/containerd-shim
docker/dockerd
docker/docker-proxy
docker/runc
docker/containerd
docker/docker-init
docker/docker
Captain'sBay==>

Move the binaries to a directory on your executable path

It could be such as /usr/bin/. If you skip this step, you must provide the path to the executable when you invoke docker or dockerd commands.

Captain'sBay==>sudo cp -rf docker/* /usr/bin/
Captain'sBay==>sudo cp -rf docker/* /usr/local/bin/

Start the Docker daemon:

$ sudo dockerd &
Client: Docker Engine - Community
 Version:           19.03.0-beta1
 API version:       1.40
 Go version:        go1.12.1
 Git commit:        62240a9
 Built:             Thu Apr  4 19:15:07 2019
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.0-beta1
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.1
  Git commit:       62240a9
  Built:            Thu Apr  4 19:22:34 2019
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          v1.2.5
  GitCommit:        bb71b10fd8f58240ca47fbb579b9d1028eea7c84
 runc:
  Version:          1.0.0-rc6+dev
  GitCommit:        2b18fe1d885ee5083ef9f0838fee39b62d653e30
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683
Captain'sBay==>

Testing with hello-world

Captain'sBay==>sudo docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
1b930d010525: Pull complete 
Digest: sha256:2557e3c07ed1e38f26e389462d03ed943586f744621577a99efb77324b0fe535
Status: Downloaded newer image for hello-world:latest
INFO[2019-04-10T09:26:23.338596029Z] shim containerd-shim started                  address="/containerd-shim/m
oby/5b23a7045ca683d888c9d1026451af743b7bf4005c6b8dd92b9e95e125e68134/shim.sock" debug=false pid=2953
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
    (amd64)
 3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
 https://hub.docker.com/
For more examples and ideas, visit:
 https://docs.docker.com/get-started/

Support for docker context

I assume you have Docker already installed on Node-2(10.140.0.3) .You can configure the Docker daemon to listen to multiple sockets at the same time using multiple -H options:

sudo dockerd -H unix:///var/run/docker.sock -H tcp://10.140.0.3

To test drive, let us first remove available context if any to keep it clean

Captain'sBay==>sudo docker context rm -f context2
context2
Captain'sBay==>sudo docker context rm -f context1
context1
Captain'sBay==>sudo docker context rm -f context3
context3

Creating a new Context

Captain'sBay==>sudo docker context create --docker host=tcp://10.140.0.3:2375 context2
context2
Successfully created context "context2"

Captain'sBay==>sudo docker context use context2
context2
Current context is now "context2"

Listing out the available contexts

Captain'sBay==>sudo docker context ls
NAME                DESCRIPTION                               DOCKER ENDPOINT               KUBERNETES ENDPOIN
T   ORCHESTRATOR
context2 *                                                    tcp://10.140.0.3:2375                           
    
default             Current DOCKER_HOST based configuration   unix:///var/run/docker.sock                     
    swarm

Inspecting the new Context

Captain'sBay==>sudo docker context inspect context2
[
    {
        "Name": "context2",
        "Metadata": {},
        "Endpoints": {
            "docker": {
                "Host": "tcp://10.140.0.3:2375",
                "SkipTLSVerify": false
            }
        },
        "TLSMaterial": {},
        "Storage": {
            "MetadataPath": "/home/ajeetraina/.docker/contexts/meta/53c5077690eb97802a2b4c62bdebcf287d32b1
9fdfe625ed4e215e96fdb42378",
            "TLSPath": "/home/ajeetraina/.docker/contexts/tls/53c5077690eb97802a2b4c62bdebcf287d32b19fdfe6
25ed4e215e96fdb42378"
        }
    }
]

Verify if you are able to access Swarm Mode Cluster running on other node

Captain'sBay==>sudo docker node ls
ID                            HOSTNAME            STATUS              AVAILABILITY        MANAGER STATUS      
ENGINE VERSION
w49axti8f1soh6egkcqzoph69 *   node2               Ready               Active              Leader              
19.03.0-beta1
Captain'sBay==>

Awesome !

Switching the Context to PWD

TBD

Switching the Context to PWK

TBD

Testing rootless Docker under Docker 19.03.0 Beta 1

End Goal:

Start daemon: dockerd-rootless.sh --experimental
Start client: docker -H unix://$XDG_RUNTIME_DIR/docker.sock run ..

Pre-requisite:

  • Install Ubuntu 18.10 on Google Cloud Platform

Download the below bits:

Steps to install rootless Docker

wget https://download.docker.com/linux/static/test/x86_64/docker-rootless-extras-19.03.0-beta1.tgz

Extracting the bits

tar xvf docker-rootless-extras-19.03.0-beta1.tgz
$pwd;ls
/home/ajeetraina/docker-rootless-extras
dockerd-rootless.sh  rootlesskit  vpnkit
 ls
docker  docker-19.03.0-beta1.tgz  docker-rootless-extras  docker-rootless-extras-19.03.0-beta1.tgz
dockerd-rootless.sh --experimental

Downloading Client

wget https://download.docker.com/linux/static/test/x86_64/docker-19.03.0-beta1.tgz

Extracting the bits

tar xvf docker-19.03.0-beta1.tgz

Putting it under right executables

cp -rf docker/* /usr/local/bin/

Start client:

docker -H unix://$XDG_RUNTIME_DIR/docker.sock run hello-world
INFO[2019-04-10T17:58:18.279144392Z] shim containerd-shim started                  address="/containerd-shim/moby/497e1a69744999dbd05c095cb3fe1bd614
e2f044f6a4243160ea911698fffdd2/shim.sock" debug=false pid=4185
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
    (amd64)
 3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
 https://hub.docker.com/
For more examples and ideas, visit:
 https://docs.docker.com/get-started/

Support for --gpu runtime option in Docker 19.03.0 Beta3

Pre-requisite:

  • Ubuntu 18.10 instance with 1 GPU device added under Google Cloud Instance

  • Verify that NVIDIA card is detected

$ sudo lspci -vv | grep -i nvidia
00:04.0 3D controller: NVIDIA Corporation GP100GL [Tesla P100 PCIe 16GB] (rev a1)
        Subsystem: NVIDIA Corporation GP100GL [Tesla P100 PCIe 16GB]
        Kernel modules: nvidiafb

Install Docker 19.03.0 Beta 3

 curl -fsSL https://test.docker.com -o test-docker.sh | sh

Verifying Docker Installation

$ sudo docker version
Client:
 Version:           19.03.0-beta3
 API version:       1.40
 Go version:        go1.12.4
 Git commit:        c55e026
 Built:             Thu Apr 25 02:59:01 2019
 OS/Arch:           linux/amd64
 Experimental:      false
Server:
 Engine:
  Version:          19.03.0-beta3
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.4
  Git commit:       c55e026
  Built:            Thu Apr 25 02:57:33 2019
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.2.5
  GitCommit:        bb71b10fd8f58240ca47fbb579b9d1028eea7c84
 runc:
  Version:          1.0.0-rc6+dev
  GitCommit:        2b18fe1d885ee5083ef9f0838fee39b62d653e30
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

Using --gpu option

$ sudo docker run --help | grep gpu
      --gpus gpu-request               GPU devices to add to the container ('all' to pass all GPUs)

Installing NVIDIA drivers first

  • The official page is https://www.nvidia.com/Download/index.aspx but read on for a simpler way to install drivers on Ubuntu
  • Canonical provides “magic driver install” that Nvidia doesn’t officially support but running the following as root worked for me:
sudo apt-get install ubuntu-drivers-common \
	&& sudo ubuntu-drivers autoinstall
- Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/4.18.0-1009-gcp/updates/dkms/

nvidia-uvm.ko:
Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/4.18.0-1009-gcp/updates/dkms/

depmod...

DKMS: install completed.
Setting up xserver-xorg-video-nvidia-390 (390.116-0ubuntu0.18.10.1) ...
Processing triggers for libc-bin (2.28-0ubuntu1) ...
Processing triggers for systemd (239-7ubuntu10.13) ...
Setting up nvidia-driver-390 (390.116-0ubuntu0.18.10.1) ...
Setting up adwaita-icon-theme (3.30.0-0ubuntu1) ...
update-alternatives: using /usr/share/icons/Adwaita/cursor.theme to provide /usr/share/icons/default/index.theme (x-cursor-theme) in auto mode
Setting up humanity-icon-theme (0.6.15) ...
Setting up libgtk-3-0:amd64 (3.24.4-0ubuntu1.1) ...
Setting up libgtk-3-bin (3.24.4-0ubuntu1.1) ...
Setting up policykit-1-gnome (0.105-6ubuntu2) ...
Setting up screen-resolution-extra (0.17.3build1) ...
Setting up ubuntu-mono (16.10+18.10.20181005-0ubuntu1) ...
Setting up nvidia-settings (390.77-0ubuntu1) ...
Processing triggers for libgdk-pixbuf2.0-0:amd64 (2.38.0+dfsg-6) ...
Processing triggers for initramfs-tools (0.131ubuntu15.1) ...
update-initramfs: Generating /boot/initrd.img-4.18.0-1009-gcp
cryptsetup: WARNING: The initramfs image may not contain cryptsetup binaries 
    nor crypto modules. If that's on purpose, you may want to uninstall the 
    'cryptsetup-initramfs' package in order to disable the cryptsetup initramfs 
    integration and avoid this warning.
Processing triggers for libc-bin (2.28-0ubuntu1) ...
Processing triggers for dbus (1.12.10-1ubuntu2) ...

Go ahead and reboot the system

sudo reboot

Installing NVIDIA Container Runtime

Please Note: Ubuntu 18.04 is the last supported OS for this. If you are on Ubuntu 18.10, it mightn't work as it report Unsupported OS.

Follow instructions at https://nvidia.github.io/nvidia-container-runtime/ to tap into Nvidia’s apt/yum repositories then run:

apt-get install nvidia-container-runtime Make sure that nvidia-container-runtime-hook is accessible from $PATH:

$ which nvidia-container-runtime-hook
/usr/bin/nvidia-container-runtime-hook

Restart the docker daemon to pick up the nvidia driver.

You can’t perform that action at this time.