178 lines
No EOL
4.3 KiB
Markdown
178 lines
No EOL
4.3 KiB
Markdown
# Installation
|
|
|
|
To install the Alpine Linux distribution on the system, the datasets of the system pool and the EFI partitions have to be mounted to the main system.
|
|
|
|
First import and decrypt the system pool:
|
|
|
|
```
|
|
# zpool import -N -R /mnt rpool
|
|
# zfs load-key -L file:///tmp/rpool.key rpool
|
|
```
|
|
|
|
Mount the datasets in the system pool and decrypt the home dataset:
|
|
|
|
```
|
|
# mount rpool/root/alpine /mnt -t zfs -o noatime
|
|
# zfs mount rpool/home
|
|
# zfs mount rpool/var
|
|
```
|
|
|
|
Mount the ESP:
|
|
|
|
```
|
|
# mkdir /mnt/esp
|
|
# mount /dev/md/esp /mnt/esp -t vfat
|
|
```
|
|
|
|
Then install Alpine Linux:
|
|
|
|
```
|
|
# export BOOTLOADER=none
|
|
# setup-disk -m sys /mnt
|
|
```
|
|
|
|
To have a functional chroot into the system, bind the system process directories:
|
|
|
|
```
|
|
# for dir in dev proc sys run; do
|
|
> mount --rbind --make-rslave /$dir /mnt/$dir
|
|
> done
|
|
# chroot /mnt
|
|
```
|
|
|
|
The other setup scripts can be used to configure key aspects of the system. Besides that a few necessary services have to be activated.
|
|
|
|
```
|
|
# setup-hostname <hostname>
|
|
# setup-keymap us us-euro
|
|
# setup-timezone -i <area>/<subarea>
|
|
# setup-ntp openntpd
|
|
# setup-sshd -c dropbear
|
|
# rc-update add acpid default
|
|
# rc-update add seedrng boot
|
|
# rm -rf /var/tmp
|
|
# ln -s /tmp /var/tmp
|
|
# passwd root
|
|
```
|
|
|
|
> The root password does not really matter because it is going to be locked after a user has been created.
|
|
|
|
Set the `hwclock` to use `UTC` in `/etc/conf.d/hwclock` and disable writing the time to hardware. Running a NTP negates its usability.
|
|
|
|
```
|
|
clock="UTC"
|
|
clock_hctosys="NO"
|
|
clock_systohc="NO"
|
|
```
|
|
|
|
Configure the ESP raid array to mount:
|
|
|
|
```
|
|
# modprobe raid1
|
|
# echo raid1 >> /etc/modules-load.d/raid1.conf
|
|
# mdadm --detail --scan >> /etc/mdadm.conf
|
|
# rc-update add mdadm boot
|
|
# rc-update add mdadm-raid boot
|
|
```
|
|
|
|
Configure ZFS to mount:
|
|
|
|
```
|
|
rc-update add zfs-import sysinit
|
|
rc-update add zfs-mount sysinit
|
|
rc-update add zfs-load-key sysinit
|
|
```
|
|
|
|
> If a faster boot time is preferred, `zfs-import` and `zfs-load-key` can be omitted in certain cases.
|
|
|
|
Edit `/etc/fstab` for correct mounts:
|
|
|
|
```
|
|
/dev/md/esp /esp vfat defaults,nodev,nosuid,noexec 0 2
|
|
tmpfs /tmp tmpfs rw,nodev,nosuid,noexec,mode=1777 0 0
|
|
proc /proc proc nodev,nosuid,noexec,hidepid=2 0 0
|
|
```
|
|
|
|
Install the following packages to make `mkinitfs` compatible with secureboot and TPM decryption:
|
|
|
|
```
|
|
# apk add secureboot-hook sbctl tpm2-tools zlevis
|
|
```
|
|
|
|
Configure `/etc/mkinitfs/mkinitfs.conf` to disable trigger and to add the `zlevis-hook`:
|
|
|
|
```
|
|
features="... zlevis"
|
|
disable_trigger="yes"
|
|
```
|
|
|
|
> The `mkinitfs` package that supports `zlevis` is as of this moment not yet in the alpine package repository, for the relevant steps see the [zlevis mkinitfs-implementation wiki](https://git.bijl.us/luc/zlevis/wiki/mkinitfs-implementation).
|
|
|
|
The most important step is the creation of a UKI using `secureboot-hook` which also automatically signs them. Configure `/etc/kernel-hooks.d/secureboot.conf` to set kernel cmdline options and secureboot:
|
|
|
|
```
|
|
cmdline="rw root=ZFS=rpool/root/alpine rootflags=noatime quiet splash"
|
|
|
|
signing_cert="/var/lib/sbctl/keys/db/db.pem"
|
|
signing_key="/var/lib/sbctl/keys/db/db.key"
|
|
|
|
output_dir="/esp/efi/linux"
|
|
output_name="alpine-linux-{flavor}.efi"
|
|
```
|
|
|
|
Use `sbctl` to create secureboot keys and sign them:
|
|
|
|
```
|
|
# sbctl create-keys
|
|
# sbctl enroll-keys
|
|
```
|
|
|
|
> Whilst enrolling the keys it might be necessary to add the `--microsoft` flag if you are unable to use custom keys.
|
|
|
|
Set the cache-file of the ZFS pool:
|
|
|
|
```
|
|
# zpool set cachefile=/etc/zfs/zpool.cache rpool
|
|
```
|
|
|
|
Now to see if everything went successfully, run:
|
|
|
|
```
|
|
# apk fix kernel-hooks
|
|
```
|
|
|
|
and it should give no warnings if done properly.
|
|
|
|
To install `gummiboot` as friendly bootloader:
|
|
|
|
```
|
|
# apk add gummiboot
|
|
# mkdir /esp/loader
|
|
# mkdir /esp/efi/boot
|
|
# cp /usr/lib/gummiboot/gummibootx64.efi /esp/efi/boot/bootx64.efi
|
|
```
|
|
|
|
Sign the bootloader with `sbctl`:
|
|
|
|
```
|
|
# sbctl sign -s /esp/efi/boot/bootx64.efi
|
|
```
|
|
|
|
> One may verify the signed files by running `sbctl verify`, in this case `ESP_PATH=/esp` should be defined to work properly.
|
|
|
|
`gummiboot` can be configured with the file `/esp/loader/loader.conf` with which the timeout and the default OS can be specified:
|
|
|
|
```
|
|
default alpine-linux-lts.efi
|
|
timeout 2
|
|
editor no
|
|
```
|
|
|
|
Now exit the chroot and you should be able to reboot into a working Alpine system.
|
|
|
|
```
|
|
# exit
|
|
# umount -lf /mnt
|
|
# zpool export rpool
|
|
# reboot
|
|
``` |