Krzysztof Wilczyński kwilczynski

Kubernetes Master Nodes Backup for Kops on AWS - A step-by-step Guide

For those who have been using kops for a while should know the upgrade from 1.11 to 1.12 poses a greater risk, as it will upgrade etcd2 to etcd3.

Since this upgrade is disruptive to the control plane (master nodes), although brief, it's still something we take very seriously because nearly all the Buffer production services are running on this single cluster. We felt a more thorough backup process than the currently implemented Heptio Velero was needed.

To my surprises, my Google searches didn't yield any useful result on how to carry out the backup steps. To be fair, there are a few articles that are specifically for backing up master nodes created by kubeedm but nothing too concrete for `kop

$ go doc -all net/http | awk '$1 ~ /Status/ && $2 == "=" {print}' | awk '{print $3, $1}'
100 StatusContinue
101 StatusSwitchingProtocols
102 StatusProcessing
200 StatusOK
201 StatusCreated
202 StatusAccepted
203 StatusNonAuthoritativeInfo
204 StatusNoContent

Wireguard setup on Ubuntu 16.04/18.04

Install

# sudo add-apt-repository ppa:wireguard/wireguard
# sudo apt-get update
# sudo apt-get install wireguard

Generate keys

Building and using mesa for development and testing

This explains how to build mesa from source, and how to use the custom built mesa to run some apps and games, without needing to replace the mesa libraries that your operating system runs on.

Let's assume that you are using an x86_64 system.

	#!/usr/bin/env python
	"""
	Written by Nathan Prziborowski
	Github: https://github.com/prziborowski
	This code is released under the terms of the Apache 2
	http://www.apache.org/licenses/LICENSE-2.0.html
	The property collector can be used to fetch a subset of properties
	for a large amount of objects with fewer round trips that iterating.
	This sample shows how to use the TraversalSpec to get properties
	of another object without multiple calls.

	// \
	/*
	#include <stdio.h>
	int main() {
	printf("Hello, World from C!\n");
	return 0;
	}

	#if 0
	//*/

	package main

	import (
	"fmt"
	"reflect"
	"time"
	)

	func Filter(slice interface{}, filter interface{}) interface{} {
	if slice == nil {

	package main

	import (
	"fmt"
	"os"
	"os/exec"
	"os/signal"
	"strconv"
	"syscall"
	)

	provider "aws" {
	region = "us-east-1"
	}

	variable "lifecycle_rule" {
	default = {
	enabled = true
	}
	}