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Reinstall your VPS to minimal Debian
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Debian Network Reinstall Script

Introduction

This script is written to reinstall a VPS/virtual machine to Debian 10 Buster.

Should Work On

Virtualization Platform

  • SolusVM/OpenStack/DigitalOcean/Vultr/Linode/Proxmox/QEMU KVM (BIOS boot)
  • Oracle Cloud Infrastructure (with --force-efi-extra-removable; UEFI boot)
  • Google Cloud Compute Engine (manually set the VPC internal --ip, --netmask, --gateway; UEFI boot)
  • AWS EC2 & Lightsail (BIOS boot)
  • Hyper-V but not Azure! (Generation 1 BIOS boot & Generation 2 UEFI boot)

Original OS

  • Debian 8/9/10
  • Ubuntu 14.04/16.04/18.04/20.04
  • CentOS 7/8

How It Works

  1. Generate a preseed file to automate installation
  2. Download the 'Debian-Installer' to the /boot directory
  3. Append a menu entry of the installer to the GRUB2 configuration file

Usage

curl -fLO https://raw.githubusercontent.com/bohanyang/debi/master/debi.sh && sudo bash debi.sh <OPTIONS>

Available Options

  • --ip <string> Static public/private IP, e.g. 10.0.0.2
  • --netmask <string> e.g. 255.255.255.0 / ffff:ffff:ffff:ffff::. Ignored if --ip is not specified
  • --gateway <string> e.g. 10.0.0.1. Ignored if --ip is not specified
  • --dns '8.8.8.8 8.8.4.4' Quoted string where IP addresses are seperated by spaces. Ignored if --ip is not specified
  • --hostname debian
  • --network-console Enable the network console of the installer. ssh installer@ip to connect
  • --suite buster
  • --mirror-protocol http or https or ftp
  • --https alias to --mirror-protocol https
  • --mirror-host deb.debian.org
  • --mirror-directory /debian
  • --security-repository http://security.debian.org/debian-security Magic value: 'mirror' = <mirror-protocol>://<mirror-host>/<mirror-directory>/../debian-security
  • --skip-account-setup
  • --username debian New user with sudo privilege or root
  • --password <string> Password of the new user. You'll be prompted if you choose to not specify it here
  • --authorized-keys-url <string> URL to your authorized keys for SSH authentication. e.g. https://github.com/torvalds.keys
  • --sudo-with-password Require password when the user invokes sudo command
  • --timezone UTC https://en.wikipedia.org/wiki/List_of_tz_database_time_zones#List
  • --ntp 0.debian.pool.ntp.org
  • --skip-partitioning
  • --disk <string> Manually select a disk for installation. Please remember to specify this when more than one disk is available! e.g. /dev/sda
  • --no-force-gpt By default, GPT rather than MBR partition table will be created. This option disables it.
  • --bios Don't create EFI system partition. If GPT is being used, create a BIOS boot partition (bios_grub partition). Default if /sys/firmware/efi is absent. See
  • --efi Create an EFI system partition. Default if /sys/firmware/efi exists
  • --filesystem ext4
  • --kernel <string> Choose an package for the kernel image
  • --cloud-kernel Choose linux-image-cloud-amd64 as the kernel image
  • --no-install-recommends
  • --install 'ca-certificates libpam-systemd' Additional packages to install. Quoted string where package names are seperated by spaces. Package names specified here will override the default list, rather than append to it
  • --safe-upgrade (Default) apt upgrade --with-new-pkgs. See
  • --full-upgrade apt dist-upgrade
  • --no-upgrade
  • --eth Disable Consistent Network Device Naming to get interface names like ethX back
  • --bbr Enable TCP BBR congestion control
  • --hold Don't reboot or power off after installation
  • --power-off Power off after installation rather than reboot
  • --architecture <string> e.g. amd64, i386, arm64, armhf, etc.
  • --boot-partition Should be used if /boot directory is mounted from a dedicated partition like a LVM setup
  • --firmware Load additional non-free firmwares
  • --force-efi-extra-removable See. Useful on Oracle Cloud
  • --grub-timeout 5 How many seconds the GRUB menu shows before entering the installer
  • --dry-run Print generated preseed and GRUB entry without downloading the installer and actually saving them

Presets

--cdn

  • --mirror-protocol https
  • --mirror-host deb.debian.org
  • --security-repository mirror

--aws

  • --mirror-protocol https
  • --mirror-host cdn-aws.deb.debian.org
  • --security-repository mirror

--china

  • --dns '223.5.5.5 223.6.6.6'
  • --mirror-protocol https
  • --mirror-host mirrors.aliyun.com
  • --security-repository mirror
  • --ntp ntp.aliyun.com