Sergey Bogatyrets serjs

Below are the steps to get an ARM64 version of Ubuntu running in the QEMU emulator on Windows 10.

Install QEMU

Install for Windows from https://qemu.weilnetz.de/w64/ (I used qemu-w64-setup-20181211.exe)

Put C:\Program Files\qemu on your PATH, and run the below to check it's working (which will list out the CPUs the AArch64 emulator can emulate):

qemu-system-aarch64 -M virt -cpu help

Find the original here article here: Devops Best Practices

DevOps started out as "Agile Systems Administration". In 2008, at the Agile Conference in Toronto, Andrew Shafer posted an offer to moderate an ad hoc "Birds of a Feather" meeting to discuss the topic of "Agile Infrastructure". Only one person showed up to discuss the topic: Patrick Debois. Their discussions and sharing of ideas with others advanced the concept of "agile systems administration". Debois and Shafer formed an Agile Systems Administrator group on Google, with limited success. Patrick Debois did a presentation called "Infrastructure and Operations" addressing

Description

First, I will talk about the current state of affairs. We have a several approaches:

Scan all db files and compare page LSN (barman, pg_rman). If you have big db it is not your choice.
Scan archive WAL files (current pg_arman). If you have high load it is not oyur choice too. (Big databases rarely living without high load.)
Pages are tracked using bitmap during runtime, so the needed ones can be easily dumped. (Oracle and my ptrack (patches for postgres and pg_arman)) It's really your choice.

TL;DR

Install Postgres 9.5, and then:

sudo pg_dropcluster 9.5 main --stop
sudo pg_upgradecluster 9.3 main
sudo pg_dropcluster 9.3 main

Format Changes to Test Kitchen's kitchen.yml File

This is happening thanks to a refactoring of the data manipulation code formerly in Kitchen::Config.

There are now 3 main configuration blocks that can be placed in the various levels:

driver: Configurtation relavent to Kitchen drivers. This is a combination of what was driver_plugin and driver_config. Backwards compatability is guarenteed with the legacy formats for a time, then will be deprecated (with a warning when encountered), then will be removed in a future release.
provisioner: Configuration relating to the automation tool being used. Currently supporting "chef_solo" and "chef_zero". Previously several Chef-related config paths were dumped in a Suite block, namely data_path, data_bags_path, environments_path, nodes_path, roles_path, etc. These will be supported for backwards compatability, then will be deprecated (with a warning when encountered), then will be removed in a future release.
busser: Configuration rela

Auto-enable Local HTTP Caching in Test Kitchen

Note: total experiment and hack, looks nasty, could be awesome:

Setup

Drop the kitchen.local.yml into $HOME/.kitchen/config.yml
Install polipo (with Mac: brew install polipo, with Ubuntu: apt-get install polipo)
Drop polipo-start and polipo-console somewhere useful (perhaps $HOME/bin?)

	.: {
	log
	loadbalance

	# auto: automatically pick up file changes
	auto service.nomad {
	directory local/zones
	reload 1s
	}
	}

	job "fabio" {
	datacenters = ["dc1"]
	type = "system"

	group "fabio" {
	network {
	mode = "host"

	port "lb" {
	static = 9999

	#! /usr/bin/env python
	# -- coding: utf-8 --
	# python2.7

	from requests import Request, Session
	from requests.exceptions import RequestException
	from datetime import datetime,timedelta
	import base64
	import json
	import sys

	echo "deb http://apt.postgresql.org/pub/repos/apt/ precise-pgdg main" \| sudo tee /etc/apt/sources.list.d/pgdg.list
	wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc \| sudo apt-key add -
	sudo apt-get update
	sudo apt-get install postgresql-9.3 postgresql-server-dev-9.3 postgresql-contrib-9.3 -y

	sudo su - postgres -c "psql template1 -p 5433 -c 'CREATE EXTENSION IF NOT EXISTS hstore;'"
	sudo su - postgres -c "psql template1 -p 5433 -c 'CREATE EXTENSION IF NOT EXISTS \"uuid-ossp\";'"
	sudo su - postgres -c "service postgresql stop"
	sudo su - postgres -c '/usr/lib/postgresql/9.3/bin/pg_upgrade -b /usr/lib/postgresql/9.1/bin -B /usr/lib/postgresql/9.3/bin -d /var/lib/postgresql/9.1/main/ -D /var/lib/postgresql/9.3/main/ -O "-c config_file=/etc/postgresql/9.3/main/postgresql.conf" -o "-c config_file=/etc/postgresql/9.1/main/postgresql.conf"'