Ubuntu XEN post-install on dedibox

Usual sysprep

see SSHD setup, enable root account by defining a password that won’t be used, but define it anyway otherwise unlock won’t work

passwd root
usermod --unlock root

we want same timezone on all our boxen around the world

timedatectl set-timezone Europe/Moscow
ls -lhF /etc/localtime

and remove that user

userdel -r removethatuser
ls -alhF /home/
ls -alhF /var/mail/

upgrade the system

apt update
apt full-upgrade

get some tools and scripts before XEN setup already

apt install git net-tools bridge-utils mlocate

git clone ssh://gollum@slackmx:2222/home/gollum/pub.git
ln -s pub/bin

git clone https://github.com/pbraun9/xen.git

cp -pi /etc/bash.bashrc /etc/bash.bashrc.dist
vi /etc/bash.bashrc

export PATH=$PATH:$HOME/bin:$HOME/xen

Setup XEN

see XEN host // ubuntu

mv -i /etc/default/grub /etc/default/grub.dist
cat > /etc/default/grub <<-EOF
GRUB_DEFAULT=0
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT=""
GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0 mitigations=0"
EOF

cp -i /etc/default/grub.d/xen.cfg /etc/default/grub.d/xen.cfg.dist
vi /etc/default/grub.d/xen.cfg

GRUB_CMDLINE_XEN="pv-linear-pt=true"

update-grub
grep linear /boot/grub/grub.cfg

Ready to go

xl li
brctl show

cd ~/
mkdir -p /data/{guests,templates,kernels}/
ln -s /data/guests
ln -s /data/templates
ln -s /data/kernels

eventually setup Irssi

Setup backups and outgoing emails

see poor man’s backup

see outgoing null-mailer with DMA