Flapping Container Detector

Detects repeatedly crashing ECS containers due to failed health checks or any other reason and submits notifications to Slack. Notifications can be temporarily suppressed via a Slack drop-down menu to give users time to remediate. Requires configuration of your own Slack Application and integration of it to your Slack environment.

Below you can see a visual workflow of the Slack notification and alarm suppression.

First Alert

User may then suppress the alarm

User must accept confirmation dialog (this text is configurable)

Channel is updated with the user's confirmation

Local Requirements:

1. Terraform 0.11.7 or later (https://www.terraform.io/intro/getting-started/install.html)
2. AWS CLI (https://aws.amazon.com/cli/)

Homebrew installation of dependencies:

brew install terraform

brew install aws-cli

Installation & Config:

1. Create a new Slack application: See Slack App Setup Guide
2. Deploy via Terraform: See Terraform Deployment Guide
3. Post Deploy Slack configuration: See Slack App Setup Guide parts 4 and 5.

Any and all feedback appreciated!