notify_slack

Notify Slack

This module creates a Lambda function posts messages to a Slack channel when a CloudWatch alarm changes state.

Setup

1. Create a Slack App with an incoming webhook for the channel you'd like to post in.
2. Create one or more SNS Topics and subscribe them to this module's Lambda ARN output.
3. Setup CloudWatch Alarms that send their state changes to the SNS Topics.

The above is shown in the full setup example.

Credit

The Python code that posts the message to Slack was adopted from the terraform-aws-notify-slack module under the Apache 2.0 license.

Requirements

No requirements.

Providers

Name	Version
archive	n/a
aws	n/a

Modules

No modules.

Resources

Name	Type
aws_cloudwatch_log_group.notify_slack_lambda	resource
aws_iam_policy.notify_slack_lambda	resource
aws_iam_role.notify_slack_lambda	resource
aws_iam_role_policy_attachment.notify_slack_lambda	resource
aws_lambda_function.notify_slack	resource
aws_lambda_permission.notify_slack	resource
archive_file.notify_slack	data source
aws_iam_policy_document.lambda_assume_policy	data source
aws_iam_policy_document.notify_slack_lambda	data source

Inputs

Name	Description	Type	Default	Required
billing_tag_key	(Optional, default 'CostCentre') Name of the billing tag.	string	"CostCentre"	no
billing_tag_value	(Required) Value of the billing tag.	string	n/a	yes
function_name	(Required) Name of the Lambda function.	string	n/a	yes
project_name	(Required) Name of the project. This is added to the Slack message's title.	string	n/a	yes
slack_webhook_url	(Required) Slack incoming webhook URL. This determines where the Slack message is posted.	string	n/a	yes
sns_topic_arns	(Required) SNS topic ARNs that will invoke the Lambda function and cause a Slack message to be posted.	list(string)	n/a	yes

Outputs

Name	Description
lambda_arn	ARN of the Lambda function that creates the Slack message