d0ng13 d0ng13

Prerequisites

kubectl

Install the required tools for deploying and controlling k3s.

Installation Docs:

# Download
curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"

On the host

Ensure these modules are loaded

cat /proc/sys/net/bridge/bridge-nf-call-iptables

Disable swap

sysctl vm.swappiness=0
swapoff -a

Method 1: NFS server on LXC container

Create a priviledged LXC container with:

mount=nfs,nesting=1

apt update

apt install nfs-kernel-server

Deploy k3s cluster on Vultr with RancherOS over ZeroTier network

How to deploy K3S cluster on RancherOS nodes connected via a Zerotier network.

Deploy master node

1. Update the master-deploy.sh with deployment vars

Overview

This is a solution of a common problem with Nexus Docker repositories. The administrator has to expose port for "pull", another port for "push", other ports for each hosted repository. This solution is about leveraging Nginx reverse proxy to avoid using these ports.

How it works ?

Given :

Nexus hostname is "nexus.example.com"
Nexus web port is 8081

Raspberry Pi 2/3B/B+/4B Wireless Bridge using Ubuntu Server 18.04 ARM Image and Netplan

The initial goal of this project is to use the raspberry pi in place of my Wireless Range Extender and then going from 3 wireless networks (2.4ghz, 2.4ghz extended, 5ghz) at home to only one (5ghz). This way I'm reducing the exposition to radio waves for the whole familly at home.

Let's go technical

Ok, enough drama for now, let's go technical. 😁

	#!/usr/bin/env bash

	set -e

	[ $EUID -ne 0 ] && echo "run as root" >&2 && exit 1

	apt-get update && apt install -y dnsmasq

	# Create a directory where we will store our `iptables` forwarding rules.
	mkdir -p /etc/iptables

	:: Read file "package.json" into variable string, removing line breaks.
	set string=
	for /f "delims=" %%x in (package.json) do set "string=!string!%%x"

	rem Remove quotes
	set string=%string:"=%
	rem Remove braces
	set "string=%string:~2,-2%"
	rem Change colon+space by equal-sign
	set "string=%string:: ==%"

	#!/bin/bash

	# install qemu utils
	sudo apt install qemu-utils

	# install nbd client
	sudo apt install nbd-client

	set timeout=3

	menuentry 'Linux diskless' --class os {

	insmod efi_gop
	insmod efi_uga

	# set server from option 66 (tftp-server-name) if not exist, use next_server
	if ! net_get_dhcp_option net_default_server ${net_default_interface} 66 string; then
	echo ' using next_server option instead.'