WSL2 and Beyond - Linux on Windows

Fri, May 1, 2020

Common Issues in WSL2 and Workarounds

Install Directions : https://docs.microsoft.com/en-us/windows/wsl/install

Static IP

IP Changes everytime Windows is restarted
Check using ipconfig on powershell

WSL genrates host address everytime

Avoid this by creating wsl.conf
Add IP from ipconfig as a hostname [resolv.conf]
Find ip of the machine with ipconfig File: resolv.conf

nameserver IP_WINDOWS_MACHINE
nameserver 8.8.8.8     
nameserver 8.8.4.4     
nameserver 172.29.112.1

Time out of Sync

sudo apt install ntpdate
sudo ntpdate -sb time.nist.gov

WSL Networking Problems

Accessing Windows apps from WSL (Ingress)
Accessing WSL Apps from Windows (Egress)
Port Forwarding with Firewall rules, adding listeners
Creating a Windows service to manage this

File : wsl_forwarding.ps1 , run with ./wsl_forwarding.ps1

# WSL2 network port forwarding script v1
#   for enable script, 'Set-ExecutionPolicy -ExecutionPolicy Bypass -Scope CurrentUser' in Powershell,
#   for delete exist rules and ports use 'delete' as parameter, for show ports use 'list' as parameter.
#   written by Daehyuk Ahn, Aug-1-2020

# Display all portproxy information
If ($Args[0] -eq "list") {
    netsh interface portproxy show v4tov4;
    exit;
} 

# If elevation needed, start new process
If (-NOT ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator))
{
  # Relaunch as an elevated process:
  Start-Process powershell.exe "-File",('"{0}"' -f $MyInvocation.MyCommand.Path),"$Args runas" -Verb RunAs
  exit
}

# You should modify '$Ports' for your applications 
$Ports = (22,80,443,8000, 8001, 8002, 8003, 8080, 27017, 6379)

# Check WSL ip address
wsl -d Ubuntu-18.04 hostname -I | Set-Variable -Name "WSL"
$found = $WSL -match '\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}';
if (-not $found) {
  echo "WSL2 cannot be found. Terminate script.";
  exit;
}

# Remove and Create NetFireWallRule
Remove-NetFireWallRule -DisplayName 'WSL 2 Firewall Unlock';
if ($Args[0] -ne "delete") {
  New-NetFireWallRule -DisplayName 'WSL 2 Firewall Unlock' -Direction Outbound -LocalPort $Ports -Action Allow -Protocol TCP;
  New-NetFireWallRule -DisplayName 'WSL 2 Firewall Unlock' -Direction Inbound -LocalPort $Ports -Action Allow -Protocol TCP;
}

# Add each port into portproxy
$Addr = "0.0.0.0"
Foreach ($Port in $Ports) {
    iex "netsh interface portproxy delete v4tov4 listenaddress=$Addr listenport=$Port | Out-Null";
    if ($Args[0] -ne "delete") {
        iex "netsh interface portproxy add v4tov4 listenaddress=$Addr listenport=$Port connectaddress=$WSL connectport=$Port | Out-Null";
    }
}

# Display all portproxy information
netsh interface portproxy show v4tov4;

# Give user to chance to see above list when relaunched start
If ($Args[0] -eq "runas" -Or $Args[1] -eq "runas") {
  Write-Host -NoNewLine 'Press any key to close! ';
  $null = $Host.UI.RawUI.ReadKey('NoEcho,IncludeKeyDown');
}

Accessing MongoDB on WSL

Ip Bind to 0.0.0.0 in mongo.cfg and restart the service

# mongod.conf

# Where and how to store data.
storage:
  dbPath: C:\ProgramData\MongoDB\data\db
  journal:
    enabled: true

# where to write logging data.
systemLog:
  destination: file
  logAppend: true
  path:  C:\ProgramData\MongoDB\log\mongod.log

# network interfaces
net:
  port: 27017
  bindIp: 0.0.0.0

Docker using WSL2

Setting up Docker with WSL2
Using Docker command in WSL2, Windows
Enable Kubernetes on Docker with Minikube

Setting up VScode with WSL2

pyenv version resolve (different versions of python on WSL and Windows .python_version file)
Installing VSCode Server on WSL2

Setting up Git

Use Windows Credential Manager with WSL2
Setting up SSH Keys

git config --global user.name "Your Name"
git config --global user.email "youremail@domain.com"

git config --global credential.helper "/mnt/c/Program\ Files/Git/mingw64/libexec/git-core/git-credential-manager-core.exe"

File: .gitattributes

* text=auto eol=lf
*.{cmd,[cC][mM][dD]} text eol=crlf
*.{bat,[bB][aA][tT]} text eol=crlf