fix initial commit

This commit is contained in:
Dhya 2024-10-17 15:04:16 -07:00
parent 0b812638f6
commit 68f39098fd
5 changed files with 279 additions and 0 deletions

22
kvm/get-kvm-link-local Executable file
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#!/bin/bash
if [[ $# -ne 1 ]]; then
echo "USAGE: $0 <domain>"
exit 0
else
domain="$1"
fi
if [[ ! -e /etc/libvirt/qemu/${domain}.xml ]]; then
echo "Error: ${domain} configuration not found on this system"
exit 1
fi
macAddress=$(sudo grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}' /etc/libvirt/qemu/${domain}.xml)
# courtesy of https://stackoverflow.com/a/48378567
printf "%02x%s" $(( 16#${macAddress:0:2} ^ 2#00000010 )) "${macAddress:2}" \
| sed -E -e 's/([0-9a-zA-Z]{2})*/0x\0|/g' \
| tr -d ':\n' \
| xargs -d '|' \
printf "fe80::%02x%02x:%02xff:fe%02x:%02x%02x\n"

55
kvm/kvm-setup Executable file
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#!/bin/bash
# Some notes:
#
# Prior to running this script it is recommended to update the osinfo-db:
# git clone https://gitlab.com/libosinfo/osinfo-db.git
# apt install gettext osinfo-db-tools libosinfo-bin
# cd osinfo-db
# make && make install
# osinfo-query os
#
# Some ISO images are not in the osinfo-db and therefore require initrd= and kernel= arguments provided to --location, for example:
# --location $isoImage,initrd=install.amd/initrd.gz,kernel=install.amd/vmlinuz
#
# To find them in the ISO image use:
# isoinfo -J -i <ISO image> -l | grep -e '(initrd|vmlinuz)'
# and:
# isoinfo -J -i <ISO image> -l | less
# to find what directory they are in. `isoinfo` is provided by the `genisoimage` package.
#
# The --boot line below selects UEFI non-secure-boot and requires `ovmf` to be installed
#
# The --extra-args allows console access to the installation
#
# This script assumes you have a bridge named 'br0'. Otherwise you might want to use:
# --network network:default
machineName="rock9-base"
isoImage="/mnt/e/Downloads/ISO/Rocky-9.4-x86_64-dvd.iso"
machineMemory=2 # in GB
diskSize=20
cpuNumber=2
# run `osinfo-query os` to get the name of the OS variant
osVariant="rocky9"
#--location $isoImage,initrd=install.amd/initrd.gz,kernel=install.amd/vmlinuz \
virt-install \
--connect qemu:///system \
--virt-type kvm \
--name "$machineName" \
--hvm \
--memory $(( $machineMemory * 1024 )) \
--boot loader=/usr/share/OVMF/OVMF_CODE.fd,loader.readonly=yes,loader.type=pflash,nvram.template=/usr/share/OVMF/OVMF_VARS.fd,loader_secure=no \
--disk size="$diskSize",bus=virtio,format=qcow2 \
--location $isoImage \
--vcpus $cpuNumber \
--cpu host \
--osinfo detect=on \
--os-variant "$osVariant" \
--network bridge=br1 \
--graphics none \
--console pty,target_type=serial \
--extra-args 'console=ttyS0,115200n8 --- console=ttyS0,115200n8'

51
kvm/kvm-setup-from-img Executable file
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#!/bin/bash
# Some notes:
#
# Prior to running this script it is recommended to update the osinfo-db:
# git clone https://gitlab.com/libosinfo/osinfo-db.git
# apt install gettext osinfo-db-tools libosinfo-bin
# cd osinfo-db
# make && make install
# osinfo-query os
#
# Some ISO images are not in the osinfo-db and therefore require initrd= and kernel= arguments provided to --location, for example:
# --location $isoImage,initrd=install.amd/initrd.gz,kernel=install.amd/vmlinuz
#
# To find them in the ISO image use:
# isoinfo -J -i <ISO image> -l | grep -e '(initrd|vmlinuz)'
# and:
# isoinfo -J -i <ISO image> -l | less
# to find what directory they are in. `isoinfo` is provided by the `genisoimage` package.
#
# The --boot line below selects UEFI non-secure-boot and requires `ovmf` to be installed
#
# The --extra-args allows console access to the installation
#
# This script assumes you have a bridge named 'br0'. Otherwise you might want to use:
# --network network:default
machineName="deb12-gencld"
diskImage="/mnt/e-lin/Downloads/ISO/debian-12-genericcloud-amd64.qcow2"
machineMemory=2 # in GB
cpuNumber=2
# run `osinfo-query os` to get the name of the OS variant
osVariant="debian12"
virt-install \
--connect qemu:///system \
--virt-type kvm \
--name "$machineName" \
--hvm \
--memory $(( $machineMemory * 1024 )) \
--boot loader=/usr/share/OVMF/OVMF_CODE.fd,loader.readonly=yes,loader.type=pflash,nvram.template=/usr/share/OVMF/OVMF_VARS.fd,loader_secure=no \
--disk ${diskImage},bus=virtio,format=qcow2 \
--import \
--vcpus $cpuNumber \
--cpu host \
--os-variant "$osVariant" \
--network bridge=br1 \
--graphics none \
--console pty,target_type=serial \
#--extra-args 'console=ttyS0,115200n8 --- console=ttyS0,115200n8'

32
kvm/vclone Executable file
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#!/bin/bash
if [[ $# -ne 2 ]]; then
echo "USAGE: $0 <source> <dest>"
exit 0
else
orig="$1"
dest="$2"
fi
sudo virt-clone --original "${orig}" --name "${dest}" --auto-clone
sudo virt-sysprep \
-d "${dest}" \
--operations defaults,-ssh-userdir \
--hostname "${dest}" \
--edit /etc/hosts:"s/${orig}/${dest}/" \
--edit /etc/hostname:"s/${orig}/${dest}/" \
--edit /etc/motd:"s/${orig}/${dest}/" \
--firstboot-command 'dpkg-reconfigure openssh-server' \
--firstboot-command 'systemctl restart sshd'
getLinkLocalAddress() {
local macAddress=$(sudo grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}' /etc/libvirt/qemu/${dest}.xml)
printf "%02x%s" $(( 16#${macAddress:0:2} ^ 2#00000010 )) "${macAddress:2}" \
| sed -E -e 's/([0-9a-zA-Z]{2})*/0x\0|/g' \
| tr -d ':\n' \
| xargs -d '|' \
printf "fe80::%02x%02x:%02xff:fe%02x:%02x%02x"
}
printf "The link-local IP address of %s is:\n %s\n" "${dest}" "$(getLinkLocalAddress)"

119
mmdebstrap/mmdebstrap-deb12 Executable file
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#!/bin/bash -e
#
# This script creates an mmdebstrap .tar and imports it into systemd-nspawn
# where it can be managed by machinectl
#
# This script configures the container in multiple ways:
# 1. Installs system very similar to Debian genericcloud build including
# cloud tools and cloud variant Linux kernel.
# 2. Installs and configures sudo with NOPASSWD enabled for suoders
# 3. Installs public SSH keys to user and root for pre-shared auth out-
# of-the-box
# 4. Installs netplan.io (which is also used with Debian genericcloud
# and configures it to bring the link-local interface up only
# 5. Purges multiple packages that are not part of Debian genericcloud
# 6. Configures /etc/hosts, /etc/hostname, and /etc/motd with the
# container name
# 7. Sets the container locale to `en_US.UTF-8 UTF-8`
# 8. Imports the container into machined
#
# With systemd-contianer connecting to the container should be as easy
# as `ssh <container>`
# systemd-container takes care of creating a virtual ethernet interface
# shared between the host and the container, and libnss-mymachines
# handles the name resolution for containers
#
# Start the container:
# sudo machinectl start <container>
#
# Access the container:
# ssh <container>
# - or -
# machinectl login <container>
# - or -
# machinectl shell <container>
#
# If you want to ssh in to the container as root edit /etc/ssh/sshd_config
# on the container and use:
# PermitRootLogin yes
#
if [[ $# -ne 1 ]]; then
echo "USAGE: $0 <container name>"
exit 0
else
containerName="$1"
fi
user="dhya"
pass=""
groups="adm,staff,sudo"
sources_list="# For information about how to configure apt package sources,
# see the sources.list(5) manual.
deb http://deb.debian.org/debian/ bookworm main contrib
deb-src http://deb.debian.org/debian/ bookworm main contrib
deb http://deb.debian.org/debian/ bookworm-proposed-updates main contrib
deb-src http://deb.debian.org/debian/ bookworm-proposed-updates main contrib
deb http://deb.debian.org/debian/ bookworm-updates main contrib
deb-src http://deb.debian.org/debian/ bookworm-updates main contrib
deb http://security.debian.org/debian-security bookworm-security main contrib
deb-src http://security.debian.org/debian-security bookworm-security main contrib"
netplanConf=$(cat << 'EOF'
network:
version: 2
ethernets:
enp1s0:
link-local: [ ipv6 ]
EOF
)
motdText="\n\t${containerName}\n"
# Apt proxy to use for mmdebstrap build
aptProxy='Acquire::http { Proxy "http://192.168.0.35:3142"; }'
# Apt proxy to configure in container
aptProxyConf='Acquire::http::Proxy::deb.debian.org \"http://192.168.0.35:3142/\";'
# User public SSH key for pre-shared auth with container
user_ssh_key="ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFaTibSQqYaaBk86kbjI6GCtq0Et6j3yrhVRdIaKhSTO dhya@fusion"
# Root public SSH key for pre-shared auth with container
root_ssh_key="ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINAooLnlfGBOOfWtGD5kf4fAgHnUcNM5Fjcq6V7bUJoX root@fusion"
# Note: $ needs to be escaped, e.g. Perl capture group reference $1
# machinectl requires systemd and dbus (dbus-broker) in the container
mmdebstrap \
--aptopt=''"${aptProxy}"'' \
--aptopt='Apt::Install-Recommends "false"' \
--include=dbus-broker,systemd-container,linux-image-cloud-amd64,locales,netplan.io,sudo \
--customize-hook='chroot "$1" apt -y purge linux-image-amd64 ifupdown nano vim-tiny vim-common firmware-linux-free busybox console-setup console-setup-linux cron cron-daemon-common dbus-user-session debconf-i18n dictionaries-common discover discover-data dmidecode efibootmgr emacsen-common firmware-linux-free iamerican ibritish ienglish-common intel-microcode isc-dhcp-common ispell iucode-tool laptop-detect logrotate shared-mime-info task-english tasksel tasksel-data usbutils util-linux-locales wamerican xdg-user-dirs xkb-data' \
--customize-hook='echo '"${containerName}"' > "$1/etc/hostname"' \
--customize-hook='printf "127.0.0.1\tlocalhost\n127.0.1.1\t'"${containerName}"'\n\n::1\tlocalhost ip6-localhost ip6-loopback\nff02::1\tip6-allnodes\nff02::2\tip6-allrouters" > "$1/etc/hosts"' \
--customize-hook='printf "'"${netplanConf}"'" > "$1/etc/netplan/50-cloud-init.yaml"' \
--customize-hook='printf "'"${sources_list}"'" > "$1/etc/apt/sources.list"' \
--customize-hook='printf "'"${aptProxyConf}"'" > "$1/etc/apt/apt.conf.d/02proxy"' \
--customize-hook='printf "'"${motdText}"'" > "$1/etc/motd"' \
--customize-hook='echo '"en_US.UTF-8 UTF-8"' >> "$1/etc/locale.gen"' \
--customize-hook='chroot "$1" useradd -s /bin/bash -m -G '"${groups}"' '"${user}"'' \
--customize-hook='printf "'"${root_ssh_key}"'" > "$1/root/.ssh/authorized_keys"' \
--customize-hook='echo '"${user}":"${pass}"' | chroot "$1" chpasswd' \
--customize-hook='mkdir "$1/home/'"${user}"'/.ssh"' \
--customize-hook='printf "'"${user_ssh_key}"'" > "$1/home/'"${user}"'/.ssh/authorized_keys"' \
--customize-hook='chown -R '"${user}"':'"${user}"' "$1/home/'"${user}"'/.ssh"' \
--customize-hook='perl -pi -e "s/(^%sudo\s+ALL=\(ALL:ALL\)\s+)ALL/\$1NOPASSWD:ALL/" "$1/etc/sudoers"' \
--customize-hook='chroot "$1" apt --no-install-recommends -y install vim openssh-server python3 cloud-guest-utils cloud-image-utils cloud-init cloud-initramfs-growroot cloud-utils distro-info-data rsync' \
--customize-hook='chroot "$1" rm -rf /etc/network' \
--customize-hook='chroot "$1" locale-gen' \
bookworm ${containerName}.tar
printf "\nFinished creating ${containerName} container: ${containerName}.tar\n"
sudo machinectl import-tar ${containerName}.tar ${containerName}
printf "\nFinished importing ${containerName}.tar\n"
printf "It can be started with:\n\$ sudo machinectl start $containerName\n"