aws-canary-monitoring

GitHub Action for monitoring an AWS Cloudwatch alarm and erroring if the alarm enters an ALARM state

This GitHub Action lets you monitor a Canary by polling the state of a Cloudwatch alarm. Canaries can be set up using the Cloudwatch Synthetics feature that is currently in preview. Read more about Cloudwatch Synthetics here: https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch_Synthetics_Canaries.html

This action is intended to be run following a deployment.

If the specified CloudWatch alarm enters an ALARM state during the provided monitoring time, the action will return with an exit code 1. You can then use the failure() conditional in the following step to perform a rollback or compensating action.

The action assumes that AWS credentials is configured and available in environment variables by a previous step in the workflow.

Example Usage

The action can be used like this:

  - name: AWS Canary Monitoring
    uses: janerikcarlsen/aws-canary-monitoring@v1
    with:
      alarm-name: name-of-cloudwatch-alarm

You can specify a custom monitoring time in minutes (default 5 minutes), and a polling interval in seconds (default 10 seconds):

  - name: AWS Canary Monitoring
    uses: janerikcarlsen/aws-canary-monitoring@v1
    with:
      alarm-name: name-of-cloudwatch-alarm
      monitoring-time: 5
      polling-interval: 15

In a workflow, you can use the action typically after a deployment to conditionally trigger a rollback step or other compensating action:

steps:
  - name: <Your deployment step>
    uses: <Your deployment action>
  - name: AWS Canary Monitoring
    uses: janerikcarlsen/aws-canary-monitoring@v1
    with:
      alarm-name: name-of-cloudwatch-alarm
  - name: Your rollback step
    if: failure()
    uses: <Your rollback action>