How To Send Aws Cloudwatch Alarms To Slack

I recently got the chance to configure AWS CloudWatch Alarms to forward alerts to Slack, and frankly, it has revolutionized the way our team operates. In this piece, I’ll walk you through how to establish this integration and offer some of my own observations and advice throughout the process.

Introduction to AWS CloudWatch Alarms

AWS CloudWatch Alarms is a powerful monitoring service provided by Amazon Web Services. It allows you to monitor various metrics and take automated actions based on defined thresholds. By setting up alarms, you can proactively detect and react to operational issues before they impact your services.

Setting Up a Slack Channel

Before we dive into the details of setting up the integration, let’s start by creating a dedicated Slack channel for receiving CloudWatch alarms. This will help keep your alerts organized and easy to manage.

To create a new Slack channel, simply navigate to your Slack workspace and click on the ‘+’ icon next to the Channels section. Give your channel an appropriate name and description, and you’re good to go.

Configuring CloudWatch Alarms

Now that we have our Slack channel ready, let’s move on to configuring the CloudWatch alarms to send notifications to Slack.

  1. Open the AWS Management Console and navigate to the CloudWatch service.
  2. In the left navigation pane, click on “Alarms” and then click on the “Create alarm” button.
  3. Choose a metric you want to monitor, such as CPU usage or request latency.
  4. Set the conditions for the alarm by specifying the threshold values and the period over which the alarm evaluates the metric.
  5. Under the “Actions” section, click on “Add notification” and select “Create a new topic”.
  6. Provide a name for the SNS topic and select the Slack channel you created earlier as the endpoint.
  7. Click on “Create topic” and then “Create alarm” to save your configuration.

Once your CloudWatch alarm is set up, it will start monitoring the specified metric and send notifications to your Slack channel whenever the defined threshold is breached.

Personal Insights and Tips

Throughout my experience with setting up AWS CloudWatch Alarms to send notifications to Slack, I’ve learned a few insights and tips that I’d like to share:

  1. Choose the right metric: It’s important to select the most relevant metric for your specific use case. Consider the nature of your application or service and choose metrics that provide meaningful insights.
  2. Set appropriate alarm thresholds: Setting the right threshold values is crucial to avoid unnecessary noise or false positives. Take the time to analyze your application’s behavior and define thresholds that indicate actual issues.
  3. Regularly review and fine-tune your alarms: As your application evolves, it’s essential to regularly review and fine-tune your CloudWatch alarms. Keep an eye on the metrics and adjust the thresholds accordingly to ensure timely and accurate notifications.


Integrating AWS CloudWatch Alarms with Slack provides a seamless and efficient way to receive real-time notifications about critical events in your AWS infrastructure. By following the steps outlined in this article and incorporating personal insights and tips, you’ll be well-equipped to set up and optimize this integration for your own use.

Now, it’s time to take control of your AWS environment and stay ahead of potential issues with AWS CloudWatch Alarms and Slack integration. Happy monitoring!