Amazon Lambda to receive alerts from CloudWatch and post to Slack.
It's an Amazon lambda script that receives data from Amazon CloudWatch via, then posts that result over to Slack. Just configure the javascript file and set it in Lambda, then you are good to go.
In handler.js, you will find ALARM_CONFIG, which is the config for your alarms.
You can set different configs for different alarm conditions, depending on the
subject of the CloudWatch notification.
| name | description |
|---|---|
| condition | The script will match the CloudWatch's subject for this value |
| channel | Which channel to post to |
| mention | any mentions you will want to direct it at |
| color | color of the sidebar when posted in slack |
| severity | Optional text indicating the severity, just displayed in the message |
In handler.js, you will find SLACK_CONFIG, which is the config for you Slack.
Set the correct values in this.
| name | description |
|---|---|
| path | The path of your webhook URL. |
If you have trouble finding the above, Go here to set up your Incoming Webbhook integration for Slack, https://api.slack.com/incoming-webhooks Then find your Webhook URL. The configs will be:
https://hooks.slack.com/{path}
Set whatever CloudWatch you want in your CloudWatch settings. Be sure to remember the SNS topic you send the alarms to.
- In the Lambda console panel, create a new Lambda function. Set the name to be whatever you want it to be.
- For the code of the Lambda function, copy and paste the
handler.jsfile. - After you have created the function, select add event sources for the Lambda function.
- In the event sources, select SNS and select the topic for which you've created on CloudWatch.
That is all. You should be receiving CloudWatch alerts on your Slack.
When you want to debug/test your Lambda function, try using my lambda-local NPM.
It's a command-line tool that let's you execute Lambda functions on your local machine.
https://github.com/ashiina/lambda-local
This library is released under the MIT license.