腾讯云轻量应用服务器重装Debian 11操作系统

开搞之前先备份系统或重要文件！
开搞之前先备份系统或重要文件！
开搞之前先备份系统或重要文件！

先重点参考以下两篇，我只记录了操作过程，没有图片和注释：
https://lala.im/7226.html
https://lala.im/7233.html

参考官方文档登录轻量应用服务器控制台重置操作系统为Debian 10
卸载监控、云盾等并重启

systemctl stop tat_agent
systemctl disable tat_agent
rm -f /etc/systemd/system/tat_agent.service
rm -rf /usr/local/qcloud/
rm -rf /usr/local/sa/
reboot

mkdir /boot/debian && cd /boot/debian
wget http://ftp.debian.org/debian/dists/stable/main/installer-amd64/current/images/netboot/debian-installer/amd64/initrd.gz
wget http://ftp.debian.org/debian/dists/stable/main/installer-amd64/current/images/netboot/debian-installer/amd64/linux
gunzip initrd.gz

https://www.debian.org/releases/stable/example-preseed.txt

nano preseed.cfg

d-i debian-installer/locale string en_US
d-i keyboard-configuration/xkb-keymap select us
d-i netcfg/choose_interface select auto
d-i netcfg/get_hostname string unassigned-hostname
d-i netcfg/get_domain string unassigned-domain
d-i netcfg/hostname string localhost
d-i netcfg/wireless_wep string
d-i mirror/country string manual
d-i mirror/http/hostname string ftp.hk.debian.org
d-i mirror/http/directory string /debian
d-i mirror/http/proxy string
d-i passwd/root-login boolean true
d-i passwd/make-user boolean false
d-i passwd/root-password password Yu$a87StAGaz
d-i passwd/root-password-again password Yu$a87StAGaz
d-i clock-setup/utc boolean true
d-i time/zone string UTC
d-i clock-setup/ntp boolean true
d-i partman-auto/disk string /dev/vda
d-i partman-auto/method string regular
d-i partman-auto/choose_recipe select atomic
d-i partman-md/device_remove_md boolean true
d-i partman-lvm/device_remove_lvm boolean true
d-i partman-partitioning/confirm_write_new_label boolean true
d-i partman/choose_partition select finish
d-i partman/confirm boolean true
d-i partman/confirm_nooverwrite boolean true
d-i apt-setup/non-free boolean true
d-i apt-setup/contrib boolean true
d-i apt-setup/cdrom/set-first boolean false
d-i apt-setup/cdrom/set-next boolean false
d-i apt-setup/cdrom/set-failed boolean false
tasksel tasksel/first multiselect standard
d-i pkgsel/include string openssh-server
d-i pkgsel/upgrade select none
popularity-contest popularity-contest/participate boolean false
d-i grub-installer/only_debian boolean true
d-i grub-installer/with_other_os boolean true
d-i grub-installer/bootdev string /dev/vda
d-i finish-install/reboot_in_progress note
d-i preseed/late_command string in-target sed -i 's/#PermitRootLogin.*/PermitRootLogin yes/g' /etc/ssh/sshd_config; in-target sed -i 's/#PubkeyAuthentication.*/PubkeyAuthentication yes/g' /etc/ssh/sshd_config; in-target sed -i 's/HashKnownHosts.*/HashKnownHosts no/g' /etc/ssh/ssh_config; in-target sed -i 's/#net.ipv4.ip_forward.*/net.ipv4.ip_forward=1/g' /etc/sysctl.conf; in-target sysctl -p

echo preseed.cfg | cpio -H newc -o -A -F initrd
gzip initrd

nano /etc/grub.d/40_custom

#!/bin/sh
exec tail -n +3 $0
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
menuentry 'Install Debian 11' {
set root='hd0,msdos1'
linux /boot/debian/linux
initrd /boot/debian/initrd.gz
}

update-grub

sed -i 's/GRUB_DEFAULT=0/GRUB_DEFAULT=2/g' /etc/default/grub

update-grub

reboot

以下是我的初始化脚本，仅供参考：
上传.ssh/、.tgeraser/、.gitconfig到/root/
上传ocserv/、crontab、iptables.ipv4.nat、rc.local到/etc/

chmod 700 ~/.ssh
chmod 600 ~/.ssh/authorized_keys
chmod 600 ~/.ssh/config
chmod 600 ~/.ssh/id_ecdsa
chmod 600 ~/.ssh/id_ecdsa.pub
chmod 600 ~/.ssh/id_ed25519
chmod 600 ~/.ssh/id_ed25519.pub
chmod 600 ~/.ssh/id_rsa
chmod 600 ~/.ssh/id_rsa.pub
chmod 600 ~/.ssh/known_hosts
chmod +x /etc/rc.local
sysctl -p
apt-get -y update
apt-get -y upgrade
apt-get -y install cabextract
apt-get -y install curl
apt-get -y install git
apt-get -y install iptables
apt-get -y install ocserv
apt-get -y install python3-docopt
apt-get -y install python3-netaddr
apt-get -y install python3-pip
apt-get -y install python3-pyaes
apt-get -y install python3-pyasn1
#apt-get -y install python3-pyyaml
apt-get -y install python3-requests
apt-get -y install python3-rsa
#apt-get -y install python3-telethon
#apt-get -y install python3-tgeraser
apt-get -y install python3-yaml