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@deskoh
Last active October 18, 2021 10:24
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install centos WSL2

Install CentOS in WSL2

docker run --name centos -t centos:8 bash ls /
docker export centos -o centos8.tar
mkdir -p D:\wsl\CentOS8
wsl --import CentOS8 D:\wsl\CentOS8 centos8.tar
# Set default distro
wsl -s CentOS8

# in CentOS bash
user=deskoh
adduser -G wheel $user
echo -e "[user]\ndefault=$user" >> /etc/wsl.conf
passwd $user
su deskoh
# echo -e "PS1='\[\033[1;36m\]\u\[\033[1;31m\]@\[\033[1;32m\]\h:\[\033[1;35m\]\w\[\033[1;31m\]\$\[\033[0m\] '" >> ~/.bashrc
echo -e "PS1='\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '" >> ~/.bashrc

# terminate to restart distro
wsl -t CentOS8

Following superceded by Import any Linux distribution to use with WSL

  1. Search for the latest branch of CentOS and download the latest image here or here

  2. Extract using 7zip

# ~/.bashrc: executed by bash(1) for non-login shells.
# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
# for examples
# If not running interactively, don't do anything
case $- in
*i*) ;;
*) return;;
esac
# don't put duplicate lines or lines starting with space in the history.
# See bash(1) for more options
HISTCONTROL=ignoreboth
# append to the history file, don't overwrite it
shopt -s histappend
# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)
HISTSIZE=1000
HISTFILESIZE=2000
# check the window size after each command and, if necessary,
# update the values of LINES and COLUMNS.
shopt -s checkwinsize
# If set, the pattern "**" used in a pathname expansion context will
# match all files and zero or more directories and subdirectories.
#shopt -s globstar
# make less more friendly for non-text input files, see lesspipe(1)
[ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"
# set variable identifying the chroot you work in (used in the prompt below)
if [ -z "${debian_chroot:-}" ] && [ -r /etc/debian_chroot ]; then
debian_chroot=$(cat /etc/debian_chroot)
fi
# set a fancy prompt (non-color, unless we know we "want" color)
case "$TERM" in
xterm-color|*-256color) color_prompt=yes;;
esac
# uncomment for a colored prompt, if the terminal has the capability; turned
# off by default to not distract the user: the focus in a terminal window
# should be on the output of commands, not on the prompt
#force_color_prompt=yes
if [ -n "$force_color_prompt" ]; then
if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then
# We have color support; assume it's compliant with Ecma-48
# (ISO/IEC-6429). (Lack of such support is extremely rare, and such
# a case would tend to support setf rather than setaf.)
color_prompt=yes
else
color_prompt=
fi
fi
if [ "$color_prompt" = yes ]; then
PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
else
PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
fi
unset color_prompt force_color_prompt
# If this is an xterm set the title to user@host:dir
case "$TERM" in
xterm*|rxvt*)
PS1="\[\e]0;${debian_chroot:+($debian_chroot)}\u@\h: \w\a\]$PS1"
;;
*)
;;
esac
# enable color support of ls and also add handy aliases
if [ -x /usr/bin/dircolors ]; then
test -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)"
alias ls='ls --color=auto'
#alias dir='dir --color=auto'
#alias vdir='vdir --color=auto'
alias grep='grep --color=auto'
alias fgrep='fgrep --color=auto'
alias egrep='egrep --color=auto'
fi
# colored GCC warnings and errors
#export GCC_COLORS='error=01;31:warning=01;35:note=01;36:caret=01;32:locus=01:quote=01'
# some more ls aliases
alias ll='ls -alF'
alias la='ls -A'
alias l='ls -CF'
# Add an "alert" alias for long running commands. Use like so:
# sleep 10; alert
alias alert='notify-send --urgency=low -i "$([ $? = 0 ] && echo terminal || echo error)" "$(history|tail -n1|sed -e '\''s/^\s*[0-9]\+\s*//;s/[;&|]\s*alert$//'\'')"'
# Alias definitions.
# You may want to put all your additions into a separate file like
# ~/.bash_aliases, instead of adding them here directly.
# See /usr/share/doc/bash-doc/examples in the bash-doc package.
if [ -f ~/.bash_aliases ]; then
. ~/.bash_aliases
fi
# enable programmable completion features (you don't need to enable
# this, if it's already enabled in /etc/bash.bashrc and /etc/profile
# sources /etc/bash.bashrc).
if ! shopt -oq posix; then
if [ -f /usr/share/bash-completion/bash_completion ]; then
. /usr/share/bash-completion/bash_completion
elif [ -f /etc/bash_completion ]; then
. /etc/bash_completion
fi
fi
# Alternative: for colored bash
# PS1='\[\033[1;36m\]\u\[\033[1;31m\]@\[\033[1;32m\]\h:\[\033[1;35m\]\w\[\033[1;31m\]\$\[\033[0m\] '
wsl --import CentOS-7 "D:\WSL\CentOS-7" CentOS-7.8.2003.tar.gz --version 2
wsl --set-default CentOS-7
wsl adduser deskoh
wsl adduser deskoh
LxRunOffline set-uid -n CentOS-7 -v 1000
REM Alternatively create /etc/wsl.conf and restart `wsl --shutdown`
REM [user]
REM default=deskoh
wsl --user root usermod -aG adm deskoh
wsl --user root usermod -aG dialout deskoh
wsl --user root usermod -aG cdrom deskoh
wsl --user root usermod -aG floppy deskoh
wsl --user root usermod -aG audio deskoh
wsl --user root usermod -aG wheel deskoh
# Traffic from WSL2 is considered public
New-NetFirewallRule -DisplayName "WSL" -Direction Inbound -InterfaceAlias "vEthernet (WSL)" -Action Allow

Mirror YUM Repo

Internet Environment

# Install dependences
yum install createrepo

For non-GUI packages, exclude the following

[base]
exclude=gimp* firefox* libreoffice* qt5* thunderbird* gnome* kde* libvirt*
[updates]
exclude=libvirt* firefox* thunderbird*

Initial download.

reposync -g -l --delete -m --repoid=base --newest-only --download-metadata --download_path=/mnt/d/yum/centos/
reposync -g -l --delete -m --repoid=centosplus --newest-only --download-metadata --download_path=/mnt/d/yum/centos/
reposync -g -l --delete -m --repoid=extras --newest-only --download-metadata --download_path=/mnt/d/yum/centos/
reposync -g -l --delete -m --repoid=updates --newest-only --download-metadata --download_path=/mnt/d/yum/centos/

Create repo.

createrepo -g comps.xml /mnt/d/yum/centos/base/  
createrepo /mnt/d/yum/centos/centosplus/
createrepo /mnt/d/yum/centos/extras/  
createrepo /mnt/d/yum/centos/updates/

Subsequent updates

#!/bin/bash
reposync -g -l --delete -m --repoid=base --newest-only --download-metadata --download_path=/mnt/d/yum/centos/
createrepo -g comps.xml /mnt/d/yum/centos/base/
  
LOCAL_REPOS="updates extras centosplus"
for REPO in ${LOCAL_REPOS}; do
reposync -g -l --delete -m --repoid=$REPO --newest-only --download-metadata --download_path=/mnt/d/yum/centos/
createrepo /mnt/d/yum/centos/$REPO/  
done

Sync to S3

aws s3 sync D:/yum/centos s3://my-bucket/

Airgap Environment

Create /etc/yum.repos.d/internal-repos.repo for internal repo.

[internal-base]
name=CentOS Base
baseurl=http://myreposerver.mydomain/repos/base/
gpgcheck=0
enabled=1
[internal-centosplus]
name=CentOS CentOSPlus
baseurl=http://myreposerver.mydomain/repos/centosplus/
gpgcheck=0
enabled=1
[internal-extras]
name=CentOS Extras
baseurl=http://myreposerver.mydomain/repos/extras/
gpgcheck=0
enabled=1
[internal-updates]
name=CentOS Updates
baseurl=http://myreposerver.mydomain/repos/updates/
gpgcheck=0
enabled=1

References

https://www.tecmint.com/setup-local-http-yum-repository-on-centos-7/

Troubleshooting

No internet access from WSL

wsl --shutdown
netsh winsock reset
netsh int ip reset all
netsh winhttp reset proxy
ipconfig /flushdns

Missing Tools (CentOS)

# ssh client
yum install openssh-clients
# ip
yum install iproutes
# dig
yum install bind-utils
# traceroute
yum install traceroute
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