SHIMIZU Taku takuan-osho

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

Mastodon が他のインスタンスと情報交換をする OStatus API の使い方。使ってるだけのユーザは知る必要がない裏側の話。

host-meta

Mastodon インスタンスに対して、RFC6415 が規定する /.well-known/host-meta というパスを要求すると以下の XML が返ってくる.

<?xml version="1.0"?>
<XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0">
  <Link rel="lrdd" type="application/xrd+xml" template="https://[MASTODON_HOST]/.well-known/webfinger?resource={uri}"/>
</XRD>

	// 1. Open the browser developper console on the network tab
	// 2. Start the video
	// 3. In the dev tab, locate the load of the "master.json" file, copy its full URL
	// 4. Run: node vimeo-downloader.js "<URL>"
	// 5. Combine the m4v and m4a files with mkvmerge

	const fs = require('fs');
	const url = require('url');
	const https = require('https');

	#!/usr/bin/env bash

	set -e

	VOLUME_PATH=/Volumes/installer
	while getopts ":d:h" opts; do
	case $opts in
	d)
	VOLUME_PATH=$OPTARG
	;;

	[Unit]
	Description=Some description
	After=network.target

	[Service]
	Type=simple
	User=user
	WorkingDirectory=/home/user/somedir
	Environment=PYTHONPATH=/home/user/somedir
	ExecStart=/home/user/venv/bin/python script.py

	import asyncio

	import aiohttp
	import async_timeout
	from aiohttp import ClientError


	async def _fetch(session, url, coro):
	"""HTTPリソースからデータを取得しコルーチンを呼び出す

	# The goal: create a list of maps of subnet mappings so we don't have to statically hard-code them in aws_lb
	# https://www.terraform.io/docs/providers/aws/r/lb.html#subnet_mapping
	locals {
	# These represent dynamic data we fetch from somewhere, such as subnet IDs and EIPs from a VPC module
	subnet_ids = ["subnet-1", "subnet-2", "subnet-3"]
	eips = ["eip-1", "eip-2", "eip-3"]
	}

	# Here's the hack! The null_resource has a map called triggers that we can set to arbitrary values.
	# We can also use count to create a list of null_resources. By accessing the triggers map inside of

	# start with the nvidia container for cuda 8 with cudnn 5
	# ensure `/etc/docker/daemon.json` file is
	# modified to use nvidia runtime by default
	FROM nvidia/cuda:8.0-cudnn5-devel

	# install dependencies
	RUN apt-get update && \
	apt-get install -y \
	build-essential \
	cmake \

	import requests

	SLACK_API_TOKEN = "xoxo-asdfghjkl..." # get one from https://api.slack.com/docs/oauth-test-tokens
	CHANNEL_NAME = "general"

	channel_list = requests.get('https://slack.com/api/channels.list?token=%s' % SLACK_API_TOKEN).json()['channels']
	channel = filter(lambda c: c['name'] == CHANNEL_NAME, channel_list)[0]

	channel_info = requests.get('https://slack.com/api/channels.info?token=%s&channel=%s' % (SLACK_API_TOKEN, channel['id'])).json()['channel']
	members = channel_info['members']