Alpine On WSL2

はじめに

どうも仮想登山家初心者です. WSL2を試すノート.

WSL2

カーネル更新

公式を参照します.
https://docs.microsoft.com/ja-jp/windows/wsl/install-win10

おま環だと思うのですが, wsl_update_x64.msiがダウンロードできないことがあります.
https://docs.microsoft.com/ja-jp/windows/wsl/wsl2-kernel

C:\Users\<UserName>\.wslconfig

[wsl2]
#kernel=              # An absolute Windows path to a custom Linux kernel.
#memory=2GB           # How much memory to assign to the WSL2 VM.
#processors=2         # How many processors to assign to the WSL2 VM.
#swap=0                # How much swap space to add to the WSL2 VM. 0 for no swap file.
#swapFile=            # An absolute Windows path to the swap vhd.
#localhostForwarding= # Boolean specifying if ports bound to wildcard or localhost in the WSL2 VM should be connectable from the host via localhost:port (default true).

#  entries must be absolute Windows paths with escaped backslashes, for example C:\\Users\\Ben\\kernel
#  entries must be size followed by unit, for example 8GB or 512MB

Alpine

$ wsl --import [名前] [インストール先] [インストール元: alpine-minirootfs-xxx-x86_64.tar.gz] --version 2

使い方

$ wsl --help
$ wsl -l -v
$ wsl -d [名前] -u [ユーザー名]

最低限のアプリ

リポジトリ

http://dl-cdn.alpinelinux.org/alpine/vX.XX/main
http://dl-cdn.alpinelinux.org/alpine/vX.XX/community
http://dl-cdn.alpinelinux.org/alpine/edge/main
http://dl-cdn.alpinelinux.org/alpine/edge/community

$ adduser nya
$ addgroup nya wheel
$ apk update
$ apk upgrade
$ apk add sudo vim openssh
$ cp /etc/sudoers /etc/sudoers.tmp
$ sed -e 's/^# %wheel ALL=(ALL) ALL/%wheel ALL=(ALL) ALL/g' /etc/sudoers.tmp | sed '$a Defaults timestamp_timeout = 60' > /etc/sudoers

SSH

$ ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key
$ ssh-keygen -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key
$ ssh-keygen -t ed25519 -f /etc/ssh/ssh_host_ed25519_key
$ /usr/sbin/sshd

リソース制限

%USERPROFILE%\.wslconfig

[wsl2]
#kernel=              # An absolute Windows path to a custom Linux kernel.
memory=2GB           # How much memory to assign to the WSL2 VM.
processors=2         # How many processors to assign to the WSL2 VM.
swap=0                # How much swap space to add to the WSL2 VM. 0 for no swap file.
#swapFile=            # An absolute Windows path to the swap vhd.
#localhostForwarding= # Boolean specifying if ports bound to wildcard or localhost in the WSL2 VM should be connectable from the host via localhost:port (default true).

#  entries must be absolute Windows paths with escaped backslashes, for example C:\\Users\\Ben\\kernel
#  entries must be size followed by unit, for example 8GB or 512MB

Windowsアプリ

/tools/initでWindows側で動いている.

Docker

$ apk add docker
$ dockerd&

X

VcXsrvを使用する.

xlaunch.exe -run config.xlaunch

$ apk add xfce4 thunar-volman faenza-icon-theme slim
$ startxfce4

$ apk add i3wm i3status

IPはホストのアドレスが安定する（おま環）.

export DISPLAY=xxx.xxx.xxx.xxx:0.0

coTurn

https://github.com/coturn/coturn

$ sudo apk add linux-headers libevent-dev openssl-dev hiredis-dev 
$ sudo apk add coturn
$ sudo cp /etc/coturn/turnserver.conf.default /etc/turnserver.conf

Troubleshooting

名前解決

/etc/wsl.confを作成して, resolv.confが自動で作成されないようにする.

[network]
generateResolvConf=false

/etc/resolv.confはリンクなので, 削除してからファイルを作成する.

$ sudo rm /etc/resolv.conf
$ sudo touch /etc/resolv.conf

/etc/resolv.confにサーバを追加する.

nameserver xxx.xxx.xxx.xx1
nameserver xxx.xxx.xxx.xx2

Windowsを再起動する, wsl.confが読まれるタイミングが不明, wsl --shutdownではだめ.