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Introduction

This is a list of essential tools for developing with Ubuntu.

Requirements

Ubuntu server

Installation

Tutorial: scheduled start/stop of EC2 instances managed by Auto Scaling Groups

If your EC2 instances in AWS are managed through Auto Scaling Groups, it is easy to schedule startup and shutdown of those instances, e.g. to save money.

This tutorial walks you through setting up an AWS Lambda function that is triggered by CloudWatch Events and automatically changes the min, max and desired instances in your Auto Scaling Group(s).

The idea is to toggle between 0 (stop) and a specifed min, max and desired amount of instances (start), so you only need a single Lambda function. The premise is that you do not touch these Auto Scaling Group settings manually, or you might make your EC2 instances nocturnal.

Create new Lambda function and Start Event

Install Prometheus on Debian

install gosu

just to not wrestle with sudo and exec

$ sudo apt-get update
$ sudo apt-get install gosu

Create prometheus user

Configuring AWS ECS to have access to AWS EFS

If you would like to persist data from your ECS containers, i.e. hosting databases like MySQL or MongoDB with Docker, you need to ensure that you can mount the data directory of the database in the container to volume that's not going to dissappear when your container or worse yet, the EC2 instance that hosts your containers, is restarted or scaled up or down for any reason.

Don't know how to create your own AWS ECS Cluster? Go here!

New Cluster

Sadly the EC2 provisioning process doesn't allow you to configure EFS during the initial config. After your create your cluster, follow the guide below.

New Task Definition for Web App

If you're using an Alpine-based Node server like duluca/minimal-node-web-server follow this guide:

	#!/usr/bin/env bash

	#####################################################################
	# REFERENCES
	# - https://cloud.google.com/architecture/build-ha-vpn-connections-google-cloud-aws
	# - https://cloud.google.com/vpc/docs/private-service-connect
	#####################################################################

	export PROJECT_ID=$(gcloud config get-value project)
	export PROJECT_USER=$(gcloud config get-value core/account) # set current user

	a4b.amazonaws.com
	access-analyzer.amazonaws.com
	account.amazonaws.com
	acm-pca.amazonaws.com
	acm.amazonaws.com
	airflow-env.amazonaws.com
	airflow.amazonaws.com
	alexa-appkit.amazon.com
	alexa-connectedhome.amazon.com
	amazonmq.amazonaws.com

	#!/bin/bash

	# https://www.digitalocean.com/community/tutorials/how-to-secure-apache-with-let-s-encrypt-on-ubuntu-14-04

	# Download the Let’s Encrypt Client
	cd /usr/local/sbin
	sudo wget https://dl.eff.org/certbot-auto
	sudo chmod a+x /usr/local/sbin/certbot-auto

	# Set Up the SSL Certificate

	#!/usr/bin/python
	# -- coding: utf-8 --
	"""
	Zabbix SMTP Alert script for gmail and Amazon SES.
	"""

	import sys
	import smtplib
	from email.MIMEText import MIMEText
	from email.Header import Header

	FROM alpine:3.3
	MAINTAINER Tom Maiaroto <[email protected]>

	# Install packages
	RUN apk --update --repository http://dl-3.alpinelinux.org/alpine/edge/main add \
	freetype-dev \
	libjpeg-turbo-dev \
	libpng-dev \
	libwebp-dev \
	php7 \

	https://blog.svedr.in/posts/prometheus-quick-start.html
	https://blog.svedr.in/posts/prometheus-quick-start.rst


	.. title: Prometheus quick start
	.. slug: prometheus-quick-start
	.. date: 2016-07-05 15:50:00 UTC+02:00
	.. tags: linux, prometheus
	.. link:
	.. description: