wsl2获取宿主机IP

$ ip route | grep default | awk '{print $3}'

wsl2动态IP

参考资料：https://lengthmin.me/posts/wsl2-network-tricks/

• WSL2 使用的网络适配器是 ‘Default Hyper-V Switch’，这个适配器每次重启都会被删除重建，这就是 WSL2 为什么 IP 不固定的原因。

• 使用PowerShell脚本每次ip变化时自动写到hosts文件中，宿主机使用域名访问wsl2

• 步骤

  • 编写脚本wsl2.ps1

    # [Config]
    $wsl_hosts = "wsl.local"
    $win_hosts = "win.local"
    $HOSTS_PATH = "$env:windir\System32\drivers\etc\hosts"
    
    # [Start]
    $winip =(-Split (bash.exe -c "ip route | grep default"))[2]
    $wslip = (bash.exe -c "hostname -I | awk '{print $1}'")
    $found1 = $winip -match '\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}';
    $found2 = $wslip -match '\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}';
    
    if( !($found1 -and $found2) ){
      echo "The Script Exited, the ip address of WSL 2 cannot be found";
      exit;
    }
    
    # [Ports]
    # control whether forward port from windows to wsl
    $redirect_port = $FALSE
    
    if ($redirect_port) {
      # All the ports you want to forward separated by coma
      $ports=@(80,443,8080);
    
      # [Static ip]
      # You can change the addr to your ip config to listen to a specific address
      $addr='0.0.0.0';
      $ports_a = $ports -join ",";
    
      # Remove Firewall Exception Rules
      iex "Remove-NetFireWallRule -DisplayName 'WSL 2 Firewall Unlock' " | Out-Null
    
      # Adding Exception Rules for inbound and outbound Rules
      iex "New-NetFireWallRule -DisplayName 'WSL 2 Firewall Unlock' -Direction Outbound -LocalPort $ports_a -Action Allow -Protocol TCP"  | Out-Null
      iex "New-NetFireWallRule -DisplayName 'WSL 2 Firewall Unlock' -Direction Inbound -LocalPort $ports_a -Action Allow -Protocol TCP"  | Out-Null
    
      for( $i = 0; $i -lt $ports.length; $i++ ){
        $port = $ports[$i];
        iex "netsh interface portproxy delete v4tov4 listenport=$port listenaddress=$addr"  | Out-Null
        iex "netsh interface portproxy add v4tov4 listenport=$port listenaddress=$addr connectport=$port connectaddress=$wslip"  | Out-Null
      }
    }
    
    # [Hosts]
    # Get hosts file Content
    $HOSTS_CONTENT = (Get-Content -Path $HOSTS_PATH) | ? {$_.trim() -ne "" } | Select-String -Pattern '# w(sl)|(in)_hosts' -NotMatch
    # add custom hosts into hosts content
    $HOSTS_CONTENT = $HOSTS_CONTENT + "`n$wslip $wsl_hosts # wsl_hosts`n$winip $win_hosts # win_hosts"
    # write file
    Out-File -FilePath $HOSTS_PATH -InputObject $HOSTS_CONTENT -Encoding ASCII
    
    ipconfig /flushdns | Out-Null

  • 事件查看器 >> Windows日志 >> 系统 >> 筛选当前日志 >> 事件来源选择Hyper-V-VmSwith >> 筛选结果中找出类似如下内容的事件

    Port BD109A98-3A10-45D5-A369-D23B91836B58 (Friendly Name: FE4FF2B7-52F6-4C7B-8718-1313E35CD065) successfully created on switch 3727F08E-8EE0-4EF2-845A-EBDC7046857F (Friendly Name: WSL).
    

    

  • 右键单击该事件 >> 将任务附加到该事件 >> 为任务起名，下一步，下一步

    ->> 操作中选择启动程序

    程序或脚本填powershell

    添加参数填-WindowStyle Hidden -file E:\github\wsl\wsl2-host.ps1

    

  • 取消hosts文件只读属性

  • 设置系统允许运行自定义powershell脚本

    以管理员身份在powershell命令行运行

    # 设置一次就永久有效了
    set-executionpolicy remotesigned

• 配置完成后，每次wsl2网络适配器变更都会运行该脚本，修改hosts文件，wsl2内hosts文件也会对应修改

  windows通过wsl.local可以访问wsl2

  wsl2通过win.local可以访问windows

• 通过域名访问时如果开启了代理，需要桡骨该域名

  

局域网访问WSL2

wsl2动态IP脚本中redirect_port变量值改为TRUE（19行），ports变量中加入要转发的端口（23行），运行脚本，即可实现端口转发，局域网访问wsl2

默认root登陆

powershell中执行

ubuntu1804 config --default-user root

参考的对象类型不支持尝试的操作

管理员运行powershell执行

netsh winsock reset