How I created a 'physical' alarm to warn me when my servers are down
NOTE: This post is originally published at dev.to This post contains a weekend project I worked on to create an alarm when my AWS EC2 servers are down. Tools and technologies used: AWS Lambda, EventBridge, Greengrass, Raspberry Pi, Active Buzzer and LED light (as the alarm), GPIO, etc. Architecture: How it works: When an EC2 is stopped or terminated, EventBridge will capture the event. EventBrige will trigger the Lambda function (PublishToIotCloud) which publish a message to IOT cloud with the topic ‘alarm’.