Cloudwatch Alarms to Slack

AWS Lambda function to send CloudWatch alarms to a slack channel through a Slack Incomming webhook.

Environment variables

• SLACK_CHANNEL: Slack channel where to send messages
• SLACK_HOOK_URL: Incomming webhook url. This value should be encrypted with KMS when the function is deployed on AWS
• LOGLEVEL: (default: INFO)
• LOCAL: (default: False) Run the function locally. Used for testing

Testing locally

One option is to use python-lambda-local, which can be installed through pip.

Export the variable LOCAL=False, and the related slack vars. Then, run:

$> python-lambda-local \
  -f lambda_handler \
  -l slack_notification \
  -t 5 \
  aws_lambda.py tests/events/sns.event-alarm.json

Deploying

Make sure to have a lambda function created wit the name of this repo, and that you export the following variables:

• AWS_REGION
• AWS_PROFILE

$> ./build.sh