ThinGuy

How to Configure Microsoft DHCP for Canonical MAAS

This guide explains how to configure an external Microsoft DHCP server to work with Canonical MAAS (Metal as a Service). Configuring the right DHCP options will ensure that nodes are able to correctly PXE boot and communicate with MAAS for provisioning.

Step 1: Open the DHCP Management Console

1. On your Windows Server, press Windows + R, type dhcpmgmt.msc, and press Enter.
2. Alternatively, you can access it through Server Manager by selecting Tools -> DHCP.

Step 2: Select the DHCP Scope to Configure

1. In the DHCP console, navigate to the appropriate scope that you want to configure for MAAS nodes.

ThinGuy

# To prevent unsuppoorted architecture error messages from apt on Ubuntu 24.04 (Noble Numbat)
# with the new apt sources format

# Example error messages on `apt update` after a fresh install: 
# N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'https://packages.microsoft.com/repos/edge stable InRelease' doesn't support architecture 'i386'
# N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'https://dl.google.com/linux/chrome/deb stable InRelease' doesn't support architecture 'i386'

#################################################
### SINGLE-ARCH (i.e. fix arch-related error) ###
#################################################

ThinGuy

maas-build-debug-image() {
  local -a UBU_RELS=(bionic)
  export IMG_PWD="Ubuntu1+"
  # Create salted pw for images
  printf "\e[2G - Salting the desired password of \x22${IMG_PWD}\x22 for use in debug-image\n"
  export SALTED_PWD="$(echo 'Ubuntu1+'|mkpasswd --method=SHA-512 --rounds=4096 -s)"
  # Dowload images
  printf '%s\n' ${UBU_RELS[@]}|xargs -rn1 -P0 bash -c '
  IMG_URL=https://cloud-images.ubuntu.com/${0}/current/${0}-server-cloudimg-amd64-root.tar.xz;
  printf "\e[2G - Fetching Ubuntu release ${0^} from ${IMG_URL}\n"

ThinGuy

#!/bin/bash

sudo install -o0 -g0 -m0755 /dev/null /etc/networkd-dispatcher/routable.d/99-disable-tso-gso-gro.sh

cat <<'EOF' |sudo tee /etc/networkd-dispatcher/routable.d/99-disable-tso-gso-gro.sh
#!/bin/bash
#
# This script will be placed in /etc/networkd-dispatcher/routable.d/
# and made exectuable
#

ThinGuy

# Work around for when you want/need your password to contain part of your username

# Disable the pwquality profile in PAM
sudo pam-auth-update --disable pwquality
# Change your password
echo 'ubuntu:Ubuntu123!'|sudo chpasswd -s
# Enable the pwquality profile in PAM
sudo pam-auth-update --enable pwqualit

ThinGuy

fix-usb2serial() {
  printf "\n\e[1mFix USB to Serial device permissions\e[0m\n"
  local DEVREGX='.*tty[UA].*' W='s'
  declare -ag TTYUSB_DEVS=($(find /sys/class/tty -type l -regex "${DEVREGX}" -printf "%P\n" 2>&1))
  [[ ${#TTYUSB_DEVS[@]} -ge 1 ]] && { local W=""; } || { printf "\nNo USB to Serial devices found using regex \x22${DEVREGX}\x22.\nQuitting\n\n";return 3; }
  [[ -n $(id -Gn|grep 2>/dev/null -oE dialout) ]] && { printf "\e[2G - User $USER already a member of \x22dialout\x22 group \e[3m(Good\x21)\e[0m\n"; } || { printf "\e[2G -- Adding User $USER to the \x22dialout\x22 group\n"; sudo usermode -aG dialout $USER; }
  printf "\e[2G - Creaing udev rules file: /etc/udev/rules.d/50-ttyUSB.rules\n"
  sudo install -o0 -g0 -m0644 /dev/null /etc/udev/rules.d/50-ttyUSB.rules
  printf "\e[2G - Adding ${#TTYUSB_DEVS[@]} udev rule${W}:\n"
  (printf "%s\n" ${TTYUSB_DEVS[@]}|xargs -I{} printf "KERNEL==\x22{}\x22,\x20MODE=\x270666\x22\n")|sudo tee -a /etc/udev/rules.d/50-ttyUSB.rules|sed -r 's/^/        /g'

ThinGuy

ubuntu-repo-size() {
  ubuntu-repo-size_usage() {
    printf "\n\e[1m\e[2G${FUNCNAME%%_*}\e[0m\n\n"
    printf "\e[1m\e[2GUsage\e[0m: ${FUNCNAME%%_*} [options]\n\n"
    printf "\e[1m\e[2GOptions\e[0m:\n\n"
    printf "\e[3G -a, --arch \e[28GArchitecture to display, i.e. amd64,arm64,armhf,i386,ppc64el,s390x (Default: amd64)\n"
    printf "\e[3G -s, --series \e[28GRelease nicknames to get information for, (Default: current LTS)\n"
    printf "\e[3G -c, --components \e[28GList of repo components to query (Default: main,universe,multiverse,restricted)\n"
    printf "\e[3G -p, --pockets \e[28GList of repo pockets components to query (Default: \$series \$series-updates \$series-backports \$series-security \$series-proposed)\n"
    printf "\e[3G -i, --intel-repo-uri \e[28GURI of ubuntu archive for amd64/i386 (Default: http://archive.ubuntu.com/ubuntu/dists)\n"

ThinGuy

#!/bin/bash

##############################
# Scripted XRDP Installation #
##############################

### Note: You can only be logged in via console or RDP, not both.
###       If you get blackscreen via RDP or if console keeps going
###       back to login screen, run `gnome-session-quit --force --logout`
###       via ssh as the same user you are trying to login

ThinGuy

sudo apt install \
  gimp gimp-plugin-registry gimp-data-extras gimp-help-common gimp-help-en gimp-gap gimp-data -qyf \
  $(apt-cache search -n '^obs-'|awk '/Studio|studio/&&!/websocket/{print $1}'|paste -sd' ') \
  -yqf --auto-remove --purge

ThinGuy

#!/bin/bash

# Fix thumbnails (Long deprecated Image.ANTIALIAS finally removed in PIL 10.0.0)
sudo sed -i 's/Image.ANTIALIAS/Image.LANCZOS/g' /usr/lib/python3/dist-packages/hydrapaper/wallpaper_flowbox_item.py
# Fix merge issues when using Dark mode (known buy merging to a single wallpaper in dark mode)
sudo sed -i 's/ if set_dark else \x27picture-uri\x27//g' /usr/lib/python3/dist-packages/hydrapaper/wallpaper_merger.py

# Restart/Reload hydrapaper App