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rameerez / lambda_function.py
Last active December 25, 2023 18:39
AWS Lambda function to send Telegram messages when CloudWatch alarms trigger
# You need to give the Lambda the following permissions.
# Head to the Lambda page, and under Configuration > Permissions > Resource-based policy statements add a new policy statement:
# - Select "AWS Service"
# - On "Service", choose "Other"
# - Statement ID: AlarmAction
# - Principal: lambda.alarms.cloudwatch.amazonaws.com
# - Source ARN: arn:aws:cloudwatch:us-east-1:YOUR_ACCOUNT_ID:alarm:*
# - Action: lambda:InvokeFunction
#
# The same result can be achieved with `aws-cli`:
@rameerez
rameerez / lambda_function.py
Last active December 25, 2023 01:02
AWS Lambda function to forward UptimeRobot up / down events to a Telegram group chat
# Needed previous configuration:
#
# - In UptimeRobot, configure a new **Webhook** Alert Contact with this POST payload:
# ```
# {
# "monitorID": "*monitorID*",
# "monitorURL": "*monitorURL*",
# "monitorFriendlyName": "*monitorFriendlyName*",
# "alertType": "*alertType*",
# "alertTypeFriendlyName": "*alertTypeFriendlyName*",
@rameerez
rameerez / add-new-website.sh
Last active June 16, 2023 11:57
Script to set up a new site with SSL cert in a Unix (Apache VirtualHost) server
#!/bin/sh
# Should be run as sudo
# Usage: add-new-website.sh domain -- script to set up a new site with SSL cert
# where:
# domain website domain without subdomains (ex: example.com)
if [ ! -z "$1" ]
then
@rameerez
rameerez / aws-ec2-rails-user-data.sh
Last active May 3, 2023 17:28
User data to perform the initial set up of an AWS EC2 machine after running the AMI script
#!/bin/bash
# This scripts performs the initial setup for an EC2 AMI that has
# been previously prepared to accept Rails apps.
# --- USER DATA SCRIPT STARTS ---
# Configure SSH key for the rails user (same as ubuntu, AWS configured key)
sudo mkdir /home/rails/.ssh
@rameerez
rameerez / aws-al2023-ec2-instance-setup-for-rails-7-capistrano.sh
Last active May 3, 2023 16:40
Configure an AWS EC2 instance running Amazon Linux 2023 (AL2023) to run a Rails 7 app using Capistrano for deployment
#!/bin/bash
# This scrips takes a clean AWS Amazon Linux 2023 AMI and installs and configures
# everything needed to deploy a Rails app to it. The resulting state is a clean
# instance that can be used to build a base AMI for an EC2 ASG.
# --- AESTHETICS ---
# Define the color code for green for echo messages
@rameerez
rameerez / listmonk-s3-policy.json
Created February 23, 2023 20:04
AWS IAM policy for a Listmonk user to access only one S3 bucket
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "VisualEditor0",
"Effect": "Allow",
"Action": [
"s3:PutObject",
"s3:GetObject",
"s3:PutBucketPublicAccessBlock",