nickk NickKelly1

Config Telegrambot for grafana's alerts.

1. Create bot

Open Telegram and search for @BotFather user and message them the following:

You
/newbot 

BotFather

Set up a Telegram Bot

Go to Grafana > Alerting > Notification channels > New channel.
Type: Telegram. It will ask you for a Bot API Token and a Chat ID.
Open a chat with BotFather on Telegram.
Type /newbot
Type your bots name. e.g. Grafana Bot
Type your bots username. e.g. a_new_grafana_bot
You get your Bot API Token. Paste it on Grafana.
Before making getUpdates (in the next step) you should add your bot into your telegram client and run /start. Thus you start chatting with the bot and this room is assigned chat id. (Thanks to @KES777)

How to setup AWS lambda function to talk to the internet and VPC

I'm going to walk you through the steps for setting up a AWS Lambda to talk to the internet and a VPC. Let's dive in.

So it might be really unintuitive at first but lambda functions have three states.

No VPC, where it can talk openly to the web, but can't talk to any of your AWS services.
VPC, the default setting where the lambda function can talk to your AWS services but can't talk to the web.
VPC with NAT, The best of both worlds, AWS services and web.

Read this first!

Hi there! Since this post was originally written, nvm has gained some new tools, and some people have suggested alternative (and potentially better) approaches for modern systems. Make sure to have a look at the comments to this article, before following this guide!

The original article

Trickier than it seems.

	cat > /etc/ssh/sshd_config << "EOF"
	Include /etc/ssh/sshd_config.d/*.conf

	#Port 22
	#AddressFamily any
	#ListenAddress 0.0.0.0
	#ListenAddress ::
	...
	EOF

	#!/bin/bash
	set -e


	# Sets up an new myql instalation (Ubuntu 20.04)s

	# 1. Downloads mysql-server if necessary
	# 2. Secures the installation
	# 3. Sets the root password
	# 4. Creates an app related DB

	'use strict';

	/**
	* @callback BeforeShutdownListener
	* @param {string} [signalOrEvent] The exit signal or event name received on the process.
	*/

	/**
	* System signals the app will listen to initiate shutdown.
	* @const {string[]}

	AWSTemplateFormatVersion: 2010-09-09
	Description: My Network Environment
	Resources:
	# VPC containing 3 subnets, 1 is public, while the other 2 are private for RDS
	MyVPC:
	Type: AWS::EC2::VPC
	Properties:
	CidrBlock: 10.0.0.0/16
	EnableDnsSupport: 'true'
	EnableDnsHostnames: 'true'

	version: '2.1'

	networks:
	monitor-net:
	driver: bridge

	volumes:
	prometheus_data: {}
	grafana_data: {}