Plamo Linux 日記

Plamo Linux に関係することだけではなく,最近は一般的なコンピュータやガジェット関係についても記載してます.

Qbilinux 開発について(その52): docker まわりをパッケージングして arm 64bit 環境で動作チェック

ぼちぼちと Plamo Linux 6.x のソース一式からブランチして,Qbilinux という linux ディストリビューションを作成.

いつまで続くのか.

いじってる Qbilinux のホームページは https://qbilinux.org/ に,ビルドスクリプトは https://github.com/qbilinux/qbilinux,バイナリは https://qbilinux.org/pub/ 以下にあります.

前回の blog 記事に引き続いて docker まわりをいじり中.

slackware ベースのパッケージングスクリプトを qbilinux 用に修正してパッケージ化.

とりあえず x86_64 環境では問題なく動作しているみたいだな.ふう.

調子に乗って arm 64bit 環境 (aarch64) でもビルド.

普通にビルドできたね.

動作するかな?ドキドキ.

カーネルバージョンはこんな感じ.

root@rq64:/home/matsuki/tmp# uname -a
Linux rq64 5.4.13-v8 #2 SMP PREEMPT Sun Jan 26 01:27:01 JST 2020 aarch64 GNU/Linux

動かしている環境はラズパイ4 (Raspberry Pi 4 4GB モデル) ね.

とりあえず root で実行.

root@rq64:/home/matsuki/tmp# docker

Usage:  docker [OPTIONS] COMMAND

A self-sufficient runtime for containers

Options:
      --config string      Location of client config files (default "/home/matsuki/.docker")
  -c, --context string     Name of the context to use to connect to the daemon (overrides
                           DOCKER_HOST env var and default context set with "docker context use")
  -D, --debug              Enable debug mode
  -H, --host list          Daemon socket(s) to connect to
  -l, --log-level string   Set the logging level ("debug"|"info"|"warn"|"error"|"fatal") (default
                           "info")
      --tls                Use TLS; implied by --tlsverify
      --tlscacert string   Trust certs signed only by this CA (default "/home/matsuki/.docker/ca.pem")
      --tlscert string     Path to TLS certificate file (default "/home/matsuki/.docker/cert.pem")
      --tlskey string      Path to TLS key file (default "/home/matsuki/.docker/key.pem")
      --tlsverify          Use TLS and verify the remote
  -v, --version            Print version information and quit

Management Commands:
  builder     Manage builds
  config      Manage Docker configs
  container   Manage containers
  context     Manage contexts
  engine      Manage the docker engine
  image       Manage images
  network     Manage networks
  node        Manage Swarm nodes
  plugin      Manage plugins
  secret      Manage Docker secrets
  service     Manage services
  stack       Manage Docker stacks
  swarm       Manage Swarm
  system      Manage Docker
  trust       Manage trust on Docker images
  volume      Manage volumes

Commands:
  attach      Attach local standard input, output, and error streams to a running container
  build       Build an image from a Dockerfile
  commit      Create a new image from a container's changes
  cp          Copy files/folders between a container and the local filesystem
  create      Create a new container
  deploy      Deploy a new stack or update an existing stack
  diff        Inspect changes to files or directories on a container's filesystem
  events      Get real time events from the server
  exec        Run a command in a running container
  export      Export a container's filesystem as a tar archive
  history     Show the history of an image
  images      List images
  import      Import the contents from a tarball to create a filesystem image
  info        Display system-wide information
  inspect     Return low-level information on Docker objects
  kill        Kill one or more running containers
  load        Load an image from a tar archive or STDIN
  login       Log in to a Docker registry
  logout      Log out from a Docker registry
  logs        Fetch the logs of a container
  pause       Pause all processes within one or more containers
  port        List port mappings or a specific mapping for the container
  ps          List containers
  pull        Pull an image or a repository from a registry
  push        Push an image or a repository to a registry
  rename      Rename a container
  restart     Restart one or more containers
  rm          Remove one or more containers
  rmi         Remove one or more images
  run         Run a command in a new container
  save        Save one or more images to a tar archive (streamed to STDOUT by default)
  search      Search the Docker Hub for images
  start       Start one or more stopped containers
  stats       Display a live stream of container(s) resource usage statistics
  stop        Stop one or more running containers
  tag         Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE
  top         Display the running processes of a container
  unpause     Unpause all processes within one or more containers
  update      Update configuration of one or more containers
  version     Show the Docker version information
  wait        Block until one or more containers stop, then print their exit codes

Run 'docker COMMAND --help' for more information on a command.

コマンド実行はできてるね.つぎ,hello-world.

root@rq64:/home/matsuki/tmp# docker run hello-world
docker: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?.
See 'docker run --help'.

ん? daemon が実行できていないみたいだな.

root@rq64:/home/matsuki/tmp# ls -al /etc/rc.d/rc.docker 
-rw-r--r-- 1 root root 1,746  7月 12日  14:22 /etc/rc.d/rc.docker
root@rq64:/home/matsuki/tmp# sh /etc/rc.d/rc.docker start
Starting dockerd ...
root@rq64:/home/matsuki/tmp# ps auxww | grep docker
matsuki    624  0.1  0.0 215432  2292 tty1     S+   08:58   0:00 less /var/log/docker.log
root       898 17.0  1.7 1137176 68408 pts/0   Sl   09:05   0:00 /usr/bin/dockerd -p /var/run/dockerd.pid
root       908 16.5  0.9 1101060 36640 ?       Ssl  09:05   0:00 containerd --config /var/run/docker/containerd/containerd.toml --log-level info
root       938  0.0  0.0 215184  1912 pts/0    S+   09:05   0:00 grep docker

daemon が動作していることを確認して,再びコマンド実行.

root@rq64:/home/matsuki/tmp# docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
256ab8fe8778: Pull complete 
Digest: sha256:d58e752213a51785838f9eed2b7a498ffa1cb3aa7f946dda11af39286c3db9a9
Status: Downloaded newer image for hello-world:latest

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.
    (arm64v8)
 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/

問題なく動作したね.続いて ubuntu は?

root@rq64:/home/matsuki/tmp# docker run -it ubuntu bash
Unable to find image 'ubuntu:latest' locally
latest: Pulling from library/ubuntu
f3801533dc70: Pull complete 
cb81013b04c0: Pull complete 
b1f21a013471: Pull complete 
7c8e2b8980f0: Pull complete 
Digest: sha256:55cd38b70425947db71112eb5dddfa3aa3e3ce307754a3df2269069d2278ce47
Status: Downloaded newer image for ubuntu:latest
root@fc5ec3d8c73c:/# 

コマンドプロンプトになったな.

root@210ff3e204f6:/# dpkg --version
Debian 'dpkg' package management program version 1.19.7 (arm64).
This is free software; see the GNU General Public License version 2 or
later for copying conditions. There is NO warranty.

コマンドも動作してるみたい.

root@fc5ec3d8c73c:/# uname -a
Linux fc5ec3d8c73c 5.4.13-v8 #2 SMP PREEMPT Sun Jan 26 01:27:01 JST 2020 aarch64 aarch64 aarch64 GNU/Linux

当然 kernel はコンテナなので元々動作している OS と同じですね.

な感じで,とりあえず aarch64 環境でも動作.ふう.

もう少しビルドスクリプトとかは調整しないと駄目なところはありますが,今後は docker のパッケージも同梱する形にしたいと思います.

現在公開している qbilinux-current では https://qbilinux.org/pub/qbilinux-current/x86_64/contrib/Virtualization/docker.txz/ 以下に docker パッケージをおいてあります.aarch64 の方は数日中に置くようにしたいと思います.はい.

とりあえずそんなところ.