Dominik Lenhardt OnkelDom

Unifi Dream Machine SE Hetzner Cloud API DynDNS

This script ist to use dynmic dns updates with the new Hetzner cloud API.

Login via ssh to your Dream Machine.

Create Folder: mkdir -p /data/hetzner_ddns

Add the following config to /data/hetzner_ddns/hetzner-cloud-ddns.conf

MariaDB Master-Master Replikation auf Rocky Linux 9.5

Ziel

Einrichtung einer Master-Master Replikation mit MariaDB auf zwei Knoten (DB1 und DB2) unter Rocky Linux 9.5. Der Datenbankzugriff erfolgt bevorzugt auf DB1 via keepalived, mit einer virtuellen IP. Bei Split-Brain soll weiterhin Schreibzugriff auf beide Nodes bestehen.

Quelle: https://github.com/jomyg/MariaDB-Master-Master-Replication

Voraussetzungen

Zwei MariaDB-Server (DB1 und DB2) mit privaten IPs (z. B. 192.168.1.11 und 192.168.1.12)

Ubuntu 22.04 Annoyances

Here are a few collected ways I like to customize Ubuntu 22.04 servers. I used to love Ubuntu, but I hate auto updates and snaps. They also put ads and other usless ads diguised as "news" in MOTD. ESM FUD is spread throughout the OS including simple apt functions. You do not need ESM and thus Ubuntu 22.04 has become super annoying. unattended-upgrade is an automatic installation of security (and other) upgrades without user intervention. Consider the ramifications of disabling this service.

Disable unattended upgrades

The Unattended Upgrades feature is enabled by default and it runs at system boot without the user's permission. The configuration is stored in /etc/apt/apt.conf.d/20auto-upgrades

Disable: sudo dpkg-reconfigure unattended-upgrades then a TUI will come up, select "No"

This will not permantently disable the function. After an update it will be enabled. In the file /etc/apt/apt.conf.d/20auto-upgrades change these values from 1 to 0. Even doing this it will

Set the IPMI Fan Speeds to use Server in Office.

set fan mode to "full"

ipmitool raw 0x30 0x45 0x01 0x01

set fans in "system" zone to 37,5%

ipmitool raw 0x30 0x70 0x66 0x00 0x24

set fans in "peripheral" zone to 25%

ipmitool raw 0x30 0x70 0x66 0x01 0x16

Run Satisfactory Dedicated Server on Ubuntu 20.04.

Define variables

SteamUser="steam"
GameDirectory="satisfactory_dedicated_server"

Sources

https://satisfactory.fandom.com/wiki/Dedicated_servers

OpenVPN on UniFi USG Instructions for FIT

Last Updated: 2021/01/19

Fork Notes

Forked this to provide better details for our environment, you should be able to copy paste most of the commands from the command blocks

Details

I wanted to run an OpenVPN server on the USG. Since it has a Radius server built in, I figured this would be a much better way to handle OpenVPN authentication. Make sure you have the Radius server enabled on your USG under Settings > Services > Radius > Server in the controller. Add OpenVpn users under Settings > Services > Radius > Server.

	# Configure Systemd-Resolved
	$ sudo apt install -y systemd-resolved

	$ cat <<EOF \| sudo tee /etc/systemd/resolved.conf
	# This file is part of systemd.
	#
	# systemd is free software; you can redistribute it and/or modify it
	# under the terms of the GNU Lesser General Public License as published by
	# the Free Software Foundation; either version 2.1 of the License, or
	# (at your option) any later version.

	# Configure Systemd-Timesyncd

	$ sudo apt install -y systemd-timesyncd

	$ cat <<EOF \| sudo tee /etc/systemd/timesyncd.conf
	# This file is part of systemd.
	#
	# systemd is free software; you can redistribute it and/or modify it
	# under the terms of the GNU Lesser General Public License as published by
	# the Free Software Foundation; either version 2.1 of the License, or

	#Install WinGet
	#Based on this gist: https://gist.github.com/crutkas/6c2096eae387e544bd05cde246f23901
	#Which I found here: https://chrislayers.com/2021/08/01/scripting-winget/
	$hasPackageManager = Get-AppPackage -name 'Microsoft.DesktopAppInstaller'
	if (!$hasPackageManager -or [version]$hasPackageManager.Version -lt [version]"1.10.0.0") {
	"Installing winget Dependencies"
	Add-AppxPackage -Path 'https://aka.ms/Microsoft.VCLibs.x64.14.00.Desktop.appx'

	$releases_url = 'https://api.github.com/repos/microsoft/winget-cli/releases/latest'

	#!/bin/bash

	bindir="/usr/local/bin"
	binuser="root"
	bingroup="root"
	unamearch=$(uname -m)

	case $unamearch in
	(i386) arch=386;;
	(x86_64) arch=amd64;;