Raymond Brennan Taisgeal

Guide to Resetting a csync2 Cluster

Introduction

These are possible steps to reset a csync2 cluster that has been seriously fubared. This is an apocalyptic approach and should only be used when more surgical fixes (like correcting an individual conflict) aren't workable.

Use Cases

UFW

I use Ubuntu’s Uncomplicated firewall because it is available on Ubuntu and it's very simple.

Install UFW

if ufw is not installed by default be sure to install it first.

	#!/bin/bash
	# =============================================================================
	# Author: Chu-Siang Lai / chusiang (at) drx.tw
	# Filename: teams-chat-post-for-workflows.sh
	# Modified: 2024-07-22 11:44 (UTC+08:00)
	# Description: Post a message to Microsoft Teams via "Post to a chat when a webhook request is received" workflows.
	# Reference:
	#
	# - https://gist.github.com/chusiang/895f6406fbf9285c58ad0a3ace13d025
	# - https://devblogs.microsoft.com/microsoft365dev/retirement-of-office-365-connectors-within-microsoft-teams/

	sudo apt-get update
	sudo apt-get install golang-go -y
	wget https://dist.ipfs.io/go-ipfs/v0.4.10/go-ipfs_v0.4.10_linux-386.tar.gz
	tar xvfz go-ipfs_v0.4.10_linux-386.tar.gz
	sudo mv go-ipfs/ipfs /usr/local/bin/ipfs

	# /etc/systemd/system/docker.service.d/docker-nftables.conf
	# disable iptables in docker, allowing nftables to do work
	[Service]
	ExecStart=
	ExecStart=/usr/bin/docker daemon -H fd:// --iptables=false

	# /etc/systemd/system/docker.service.d/docker-nftables.conf
	# disable iptables in docker, allowing nftables to do work
	[Service]
	ExecStart=
	ExecStart=/usr/bin/docker daemon -H fd:// --iptables=false

	#! /bin/bash

	# This program is just an example of how to make a whiptail menu and some basic commands.
	# Copyright (C) 2016 Baljit Singh Sarai

	# This program 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 2
	# of the License.

	#!/bin/sh
	# Copyright 2020 Paul Morgan
	# License: GPLv2 (https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html)
	set -x
	set -e
	#
	# Docker build calls this script to harden the image during build.
	#
	# NOTE: To build on CircleCI, you must take care to keep the `find`
	# command out of the /proc filesystem to avoid errors like:

	#!/bin/bash
	#
	# lsyncd: Starts the lsync Daemon
	#
	# description: Lsyncd uses rsync to synchronize local directories with a remote
	# machine running rsyncd. Lsyncd watches multiple directories
	# trees through inotify. The first step after adding the watches
	# is to, rsync all directories with the remote host, and then sync
	# single file buy collecting the inotify events.

	settings = {
	delay = 1,
	maxProcesses = 3,
	logfile = "/var/log/lsyncd.log",
	}

	targetlist = {
	"10.0.1.24:/var/www/thomasjstein.com",
	"10.0.1.26:/var/www/thomasjstein.com"
	}