selfhosted-apps-docker/arch_linux_host_install

Arch Linux installation to serve as a docker host

guide by example

Purpose

Linux that will run docker.

This is not a very hand holding guide.
Google for plenty of tutorials and youtube videos alongside arch wiki.

• Official site
• Arch wiki install guide
• Arch wiki docker entry

Files and directory structure

/home/
└── bastard/
    └── docker/
        ├── container-setup #1
        ├── container-setup #2
        ├── ...

Make installation usb

• wiki

sudo dd bs=4M if=archlinux-2020.05.01-x86_64.iso of=/dev/sdX status=progress oflag=direct

The above command will fuck your machine up if you dunno what you are doing

Boot from the usb

This is BIOS/MBR setup as I am running on an old thinkpad with a busted screen, plus I like the simplicity of it.
So if theres boot menu option choose non-uefi.

Installation

• create a single partition and mark it bootable
  cfdisk /dev/sda
• build ext4 filesystem on it
  mkfs.ext4 /dev/sda1
• mount the new partition
  mount /dev/sda1 /mnt
• choose geographicly close mirror, ctrl+k deletes a line in nano
  nano /etc/pacman.d/mirrorlist
• install the base system
  pacstrap /mnt base linux linux-firmware base-devel grub dhcpcd nano
• gnerate fstab
  genfstab -U /mnt > /mnt/etc/fstab
• chroot in to the new system
  arch-chroot /mnt
• install grub
  grub-install /dev/sda
grub-mkconfig -o /boot/grub/grub.cfg
• remove the bootable media and restart the machine
  exit
reboot

Basic configuration after the first boot

• login as root
  
• set password for root
  passwd
• set hostname
  echo docker-host > /etc/hostname
• add new user and set their password
  useradd -m -G wheel bastard passwd bastard
• edit sudoers to allow users group wheel to sudo
  EDITOR=nano visudo
  %wheel ALL=(ALL) ALL
• check the network interface name
  ip link
• enable aquiring dynamic IP
  systemctl enable --now dhcpcd@enp0s25
• uncomment desidred locales in locale.gen
  nano /etc/locale.gen
  
• generate new locales and set one system wide
  locale-gen
localectl set-locale LANG=en_US.UTF-8
• select timezone and set it permanent
  tzselect
timedatectl set-timezone 'Europe/Bratislava'
• set hardware clock and sync using ntp
  hwclock --systohc --utc
timedatectl set-ntp true
• setup a swap file
  fallocate -l 8G /swapfile
chmod 600 /swapfile
mkswap /swapfile
nano /etc/fstab
  /swapfile none swap defaults 0 0
• enable colors in pacman.conf
  nano /etc/pacman.conf Color
• reboot
  reboot

SSH, ZSH, Docker, and other goodies

From now on its login as non-root user.

Setup SSH access

• install openssh package
  sudo pacman -S openssh
• edit sshd_config
  sudo nano /etc/ssh/sshd_config
  PermitRootLogin prohibit-password
  PasswordAuthentication yes
• enable sshd service
  sudo systemctl enable --now sshd

ZSH shell

I like Zim, it's the fastest zsh framework and out of the box setup nicely

• install zsh package
  sudo pacman -S zsh
• change users default shell to zsh
  chsh -s /bin/zsh
curl -fsSL https://raw.githubusercontent.com/zimfw/install/master/install.zsh | zsh

Setup docker

• have docker and docker-compose packages installed
  sudo pacman -S docker docker-compose
• enable docker service
  sudo systemctl enable --now docker
• add non-root user to the docker group
  sudo gpasswd -a bastard docker

Extra stuff

• sudo pacman -S vim git cronie curl borg htop lm_sensors nnn bind-tools
• install yay for access to AUR packages
  git clone https://aur.archlinux.org/yay-bin.git
cd yay-bin && makepkg -si
cd .. && rm -rf yay-bin
  

ctop and inxi are good packages from yay

Adding stuff to .zshrc

• export EDITOR=vim
• for ctrl+f prepending sudo

  add_sudo (){
      BUFFER="sudo $BUFFER"
      zle -w end-of-line
  }
  zle -N add_sudo
  bindkey "^f" add_sudo