Reinstall your VPS to minimal Debian

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Debian Network Reinstall Script

甲骨文云服务器重装 Debian

下载脚本：

curl -fLO https://raw.githubusercontent.com/bohanyang/debi/master/debi.sh && chmod a+rx debi.sh

运行脚本：

sudo ./debi.sh --cdn --network-console --ethx --bbr --user root --password <这里设置 root 密码>

以上命令选项开启了 BBR；设置了网卡名称形式是 eth0 而不是 ens3 这种。
如果是一般的 x86 架构 64 位机器（不是 ARM 架构的），还可以添加 --cloud-kernel 使用轻量版内核。
不加 --password 选项会提示输入密码。

如果没有报错可以重启：

sudo shutdown -r now

约 30 秒后可以尝试 SSH 登录 installer 用户，密码与之前设置的相同。如果成功连接，可以按 Ctrl-A 然后再按 4 监控安装日志。安装完成后会自动重启进入新系统。

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 (UEFI boot)
Google Cloud Compute Engine (Must manually configure the VPC internal IP and the gateway. UEFI boot with Secure Boot support)
AWS EC2 & Lightsail (BIOS boot)
Hyper-V & Azure (Generation 1 BIOS boot & Generation 2 UEFI boot)

Original OS

Debian 8 or later
Ubuntu 14.04 or later
CentOS 7 or later

How It Works

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

Usage

1. Download

Download the script with curl:

curl -fLO https://raw.githubusercontent.com/bohanyang/debi/master/debi.sh

# for IPv6-only machines
curl -fLO  --resolve 'raw.githubusercontent.com:443:2a04:4e42::133' https://raw.githubusercontent.com/bohanyang/debi/master/debi.sh

or wget:

wget -O debi.sh https://raw.githubusercontent.com/bohanyang/debi/master/debi.sh

2. Run

Run the script under root or using sudo:

chmod a+rx debi.sh
sudo ./debi.sh

By default, an admin user debian with sudo privilege will be created during the installation. Use --user root if you prefer.

3. Reboot

If everything looks good, reboot the machine:

sudo shutdown -r now

Otherwise, you can run this command to revert all changes made by the script:

sudo rm -rf debi.sh /etc/default/grub.d/zz-debi.cfg /boot/debian-* && { sudo update-grub || sudo grub2-mkconfig -o /boot/grub2/grub.cfg; }

Available Options

--ip <string> Disable the auto network config (DHCP) and configure a static IP address, e.g. 10.0.0.2, 1.2.3.4/24, 2001:2345:6789:abcd::ef/48
--netmask <string> e.g. 255.255.255.0, ffff:ffff:ffff:ffff::
--gateway <string> e.g. 10.0.0.1
--dns '8.8.8.8 8.8.4.4' (Default IPv6 DNS: 2001:4860:4860::8888 2001:4860:4860::8844)
--hostname <string> FQDN hostname (includes the domain name), e.g. server1.example.com
--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
--no-account-setup, --no-user (Manual installation) Proceed account setup manually in VNC or remote console.
--username, --user 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
--no-disk-partitioning, --no-part (Manual installation) Proceed disk partitioning manually in VNC or remote console
--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'
--safe-upgrade (Default) apt upgrade --with-new-pkgs. See
--full-upgrade apt dist-upgrade
--no-upgrade
--ethx 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-directory <string>
--firmware Load additional non-free firmwares
--no-force-efi-extra-removable See
--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

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