Add installation script for the guix installer iso.

This script is supposed to only run on the Guix installer and checks
that it's the case through various ways.

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
This commit is contained in:
Denis 'GNUtoo' Carikli 2023-09-20 01:54:04 +02:00
parent 67e13b860c
commit 19c44f265e
Signed by: GNUtoo
GPG Key ID: 5F5DFCC14177E263
3 changed files with 371 additions and 0 deletions

39
README
View File

@ -40,6 +40,45 @@ Once the image is booted:
# first-boot.sh # first-boot.sh
- You then need to set the root password. - You then need to set the root password.
The mumble-vm-install.sh installation script
============================================
This script is supposed to only run inside a VM on the Guix installer
and checks that it's the case through various ways. The specification
of the VM it runs on is provided in guix-vm-installer.xml for
reference. It is very specific to the Libre en communs infrastructure,
so you might need to modify it to use it on your infrastructure.
The Libre en Communs infrastructure on which this VM is being deployed
has libvirt but it doesn't have Guix on the host. So the option
provided by Libre en Communs was to do the installation from a
VM.
This is also common for many infrastructure providers due to security
concerns with access outside the VM.
Since the Guix installer is trusted and is now provided by Libre en
communs, and that we also have access to the vm management interfaces
we simply use a script to do all the installation work.
If instead you have a VM with only SSH access you will also need to
modify the script to fit that use case.
It is also possible to convert an existing VM to Guix but that
requires significantly more work (see gnu/machine/digital-ocean.scm
inside the Guix source code for more detail on how to do that).
To use this script, the admin with privileged access to the vm
management interface needs to boot the installer and copy the script
inside. This can be done by running the following command (the script
can be named like you want):
# cat /dev/ttyS0 > i.sh
and then by pasting the script through the first serial port, and
typing ctrl+d at the end, so that the file is closed and written.
The script can then run like that:
# chmod +x i.sh
# ./i.sh
License License
======= =======
This project is free software: you can redistribute it and/or modify This project is free software: you can redistribute it and/or modify

111
guix-vm-installer.xml Normal file
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@ -0,0 +1,111 @@
<domain type="kvm">
<name>guix-vm-installer</name>
<memory unit="KiB">16777216</memory>
<currentMemory unit="KiB">16777216</currentMemory>
<resource>
<partition>/machine</partition>
</resource>
<os>
<type arch="x86_64" machine="pc-i440fx-5.1">hvm</type>
<boot dev="hd"/>
</os>
<features>
<acpi/>
<apic/>
<vmport state="off"/>
</features>
<cpu mode="host-passthrough" check="none" migratable="on"/>
<clock offset="utc">
<timer name="rtc" tickpolicy="catchup"/>
<timer name="pit" tickpolicy="delay"/>
<timer name="hpet" present="no"/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<pm>
<suspend-to-mem enabled="no"/>
<suspend-to-disk enabled="no"/>
</pm>
<devices>
<emulator>/usr/bin/qemu-system-x86_64</emulator>
<disk type="file" device="disk">
<driver name="qemu" type="raw"/>
<source file="/srv/vmverse/installation/guix-system-install-1.4.0.x86_64-linux.iso"/>
<target dev="sda" bus="usb" removable="on"/>
<readonly/>
<address type="usb" bus="0" port="1"/>
</disk>
<disk type="file" device="disk">
<driver name="qemu" type="raw"/>
<source file="/srv/vmverse/noyau/audio.experimental.a-lec.org.raw"/>
<target dev="vda" bus="virtio"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x05" function="0x0"/>
</disk>
<controller type="usb" index="0" model="ich9-ehci1">
<address type="pci" domain="0x0000" bus="0x00" slot="0x04" function="0x7"/>
</controller>
<controller type="usb" index="0" model="ich9-uhci1">
<master startport="0"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x04" function="0x0" multifunction="on"/>
</controller>
<controller type="usb" index="0" model="ich9-uhci2">
<master startport="2"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x04" function="0x1"/>
</controller>
<controller type="usb" index="0" model="ich9-uhci3">
<master startport="4"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x04" function="0x2"/>
</controller>
<controller type="pci" index="0" model="pci-root"/>
<interface type="bridge">
<source bridge="br0"/>
<model type="virtio"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x03" function="0x0"/>
</interface>
<serial type="pty">
<target type="isa-serial" port="0">
<model name="isa-serial"/>
</target>
</serial>
<serial type="pty">
<target type="isa-serial" port="1">
<model name="isa-serial"/>
</target>
</serial>
<serial type="pty">
<target type="isa-serial" port="2">
<model name="isa-serial"/>
</target>
</serial>
<serial type="pty">
<target type="isa-serial" port="3">
<model name="isa-serial"/>
</target>
</serial>
<console type="pty">
<target type="serial" port="0"/>
</console>
<input type="keyboard" bus="ps2"/>
<input type="mouse" bus="ps2"/>
<graphics type="spice" autoport="yes" listen="127.0.0.1">
<listen type="address" address="127.0.0.1"/>
<gl enable="no"/>
</graphics>
<audio id="1" type="spice"/>
<video>
<model type="virtio" heads="1" primary="yes">
<acceleration accel3d="no"/>
</model>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x0"/>
</video>
<memballoon model="virtio">
<address type="pci" domain="0x0000" bus="0x00" slot="0x06" function="0x0"/>
</memballoon>
<rng model="virtio">
<backend model="random">/dev/urandom</backend>
<address type="pci" domain="0x0000" bus="0x00" slot="0x08" function="0x0"/>
</rng>
</devices>
<seclabel type="dynamic" model="dac" relabel="yes"/>
</domain>

221
mumble-vm-install.sh Executable file
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@ -0,0 +1,221 @@
#!/bin/sh
# Copyright (C) 2023 Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
#
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or (at
# your option) any later version.
#
# You should have received a copy of the GNU General Public License
# along with this file. If not, see <http://www.gnu.org/licenses/>.
report()
{
ret=$?
message="$@"
if [ ${ret} -eq 0 ] ; then
echo "[ OK ] ${message}"
else
echo "[ !! ] ${message}"
exit ${ret}
fi
}
environment_checks()
{
[ "$(id -u)" = "0" ] ; report "Running as root"
# Try to detect the installer
_mount="none / overlay"
_mount="${_mount} rw,relatime"
_mount="${_mount},lowerdir=/real-root"
_mount="${_mount},upperdir=/rw-root/upper"
_mount="${_mount},workdir=/rw-root/work"
_mount="${_mount} 0 0"
grep "${_mount}" "/proc/mounts" 2>&1 > /dev/null ; report "Mount check"
[ "${HOSTNAME}" = "gnu" ] ; report "Hostname check"
}
# FB31DBA3AB8DB76A4157329F7651568F80374459:
# uid [ultimate] Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
# uid [ultimate] Denis 'GNUtoo' Carikli <GNUtoo@riseup.net>
# uid [ultimate] Denis 'GNUtoo' Carikli <GNUtoo@makefreedom.org>
# uid [ultimate] Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
import_gpg_key()
{
cat <<EOF > FB31DBA3AB8DB76A4157329F7651568F80374459.asc
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-----END PGP PUBLIC KEY BLOCK-----
EOF
guix shell gnupg -- \
gpg --import FB31DBA3AB8DB76A4157329F7651568F80374459.asc && \
rm -f FB31DBA3AB8DB76A4157329F7651568F80374459.asc
}
environment_checks
tmpdir="$(mktemp -d)"
cd "${tmpdir}"
guix pull ; report "Guix pull"
hash guix ; report "hash guix"
import_gpg_key ; report "Import GPG key"
guix shell -C --network git nss-certs -- \
git clone https://git.a-lec.org/GNUtoo/guix-mumble-vm.git ; \
report "Cloning machine configuration git"
cd "guix-mumble-vm" ; report "cd guix-mumble-vm"
guix shell git gnupg -- \
git verify-commit HEAD ; report "check git signature"
guix shell -C --nesting autoconf automake bash coreutils grep sed -- \
./autogen.sh ; report "./autogen.sh"
guix shell -C --nesting bash coreutils gawk grep sed -- \
./configure ; report "./configure"
# TODO: use guix init or temporary storage instead to reduce the
# memory consumption. Right now we tested this script with 16GiB of
# RAM which is probably too big for many potential users. Requiring
# 4GiB would be more reasonable.
guix shell -C --nesting automake coreutils gawk grep make sed -- \
make ; report "make"
guix shell -C ddrescue -- ddrescue mumble-vm.img /dev/vda && sync ; \
report "ddrescue mumble-vm.img /dev/vda"
printf "Installation done: %s\n" \
"you can remove the install media and reboot to the new VM"