[Alpine Bootstrapping script for Linode] Script for installing an alpine linode via lish/rescue console - Forked from https://github.com/jcorme/alpine-linode-bootstrap

alpine-boostrap.sh

#!/bin/sh

HOST=${HOST:-alpine}
INTERFACES="auto lo
iface lo inet loopback
auto eth0
iface eth0 inet dhcp
  hostname $HOST
"

ALPINE_VER=${ALPINE_VER:-"latest-stable"}
APK_TOOLS_VER=${APK_TOOLS_VER:-"2.9.1-r0"}
ARCH=$(uname -m)
MIRROR="https://nl.alpinelinux.org/alpine"

BOOT_DEV="/dev/sda"
ROOT_DEV="/dev/sdb"
DATA_DEV="/dev/sdc"
SWAP_DEV="/dev/sdd"

mkdir /alpine
mount $ROOT_DEV /alpine
cd /alpine
mkdir boot
mount $BOOT_DEV /alpine/boot

curl -s $MIRROR/$ALPINE_VER/main/$ARCH/apk-tools-static-${APK_TOOLS_VER}.apk | tar xz
./sbin/apk.static --repository $MIRROR/$ALPINE_VER/main/ --update-cache --allow-untrusted --root /alpine --initdb add alpine-base alpine-mirrors

cat <<EOF >> /alpine/etc/fstab
$ROOT_DEV    /   ext4    defaults,noatime    0   0
$BOOT_DEV    /boot   ext4    defaults,noatime    0  1
$DATA_DEV    /data   ext4    defaults,noatime    0  0
$SWAP_DEV    swap    swap    defaults    0   0
EOF

cat <<EOF > /alpine/etc/inittab
# /etc/inittab
    
::sysinit:/sbin/openrc sysinit
::sysinit:/sbin/openrc boot
::wait:/sbin/openrc default
    
# Put a getty on the serial port
ttyS0::respawn:/sbin/getty -L ttyS0 115200 vt100
    
# Stuff to do for the 3-finger salute
::ctrlaltdel:/sbin/reboot
    
# Stuff to do before rebooting
::shutdown:/sbin/openrc shutdown
EOF

mkdir /alpine/boot/grub
cat <<EOF > /alpine/boot/grub/grub.cfg
set root=(hd0)
set default="Alpine Linux"
set timeout=0

menuentry "Alpine Linux" {
    linux /vmlinuz-hardened root=/dev/sdb modules=sd-mod,usb-storage,ext4 console=ttyS0 quiet
    initrd /initramfs-hardened
}
EOF

mkdir /alpine/etc/mkinitfs
cat <<EOF > /alpine/etc/mkinitfs/mkinitfs.conf
features="ata ide scsi virtio base ext4"
EOF

cp /etc/resolv.conf /alpine/etc

echo ttyS0 >> /alpine/etc/securetty

mount --bind /proc /alpine/proc
mount --bind /dev /alpine/dev

chroot /alpine /bin/sh<<CHROOT
setup-apkrepos -f
apk update
setup-hostname -n $HOST
printf "$INTERFACES" | setup-interfaces -i
rc-update add networking boot
rc-update add urandom boot
rc-update add crond
apk add linux-grsec
CHROOT

Alpine Linux Bootstrap for Linode

Should work everywhere else. If you have access to a console that can mount your volumes, and run a shell script.

A simple script that can be executed in recovery mode to bootstrap Alpine Linux on a Linode server.

Creating a Linode

This script assumes your Linode will have four disks for boot, root, data and swap.

Name	Mountpoint	Minimum recommended	Filesystem
/boot	/dev/sda	128 MB	ext4
/	/dev/sdb	3 GB	ext4
/data	/dev/sdc	Rest of your space	ext4
swap	/dev/sdd	512 MB	swap

Name is the mountpoint in the OS, Mountpoint is the mountpoints in the control panel.

If you decide not to use a swap disk, you will need to manually delete the relevant parts from the script (which should be fairly easy).

Configuration profile

Label and notes

Label: Alpine

Boot Settings

Kernel: GRUB 2

Block Device Assignment

• /dev/sda
  • boot
• /dev/sdb
  • root
• /dev/sdc
  • data
• /dev/sdd
  • swap

Filesystem/Boot helpers

Turn everything off.

Boot the Linode into recovery mode with the disks assigned as above.

Executing the Script

Connect to the Linode with Lish either via SSH or the browser console. To download and run the script:

curl -o- https://gist.githubusercontent.com/snowydane/8f8cfce9334f2b36cddb6065ceed6d7f/raw/16d3db4013a23829758f6230f2ad9cec60857b9f/alpine-boostrap.sh | bash

Once that finishes, shut the Linode down from recovery mode and, staying in the Lish console, run:

boot 1

After a bit, you should be at the Alpine login screen. The root user, by default, does not have a password. At this point, you can install an SSH server, which pretty much completes the installation.

Credit

This script is basically Andy Leap's guide written as a working script (with fixed networking!), so big thanks to him.

Jason Chen for original script

Github user jcorme for his version