Prerequisites: <\/strong><\/p>\n Step by step process to integrate Lambda with Slack:<\/strong><\/p>\n <\/p>\n Step 1: Go to your slack application where you might be able to see below scenario<\/p>\n Step 2: Click on your team name as below<\/p>\n Step 3: You will find a popup Menu as shown below and click on App and Custom Integration<\/p>\n Step 4: You will find the application site of Slack. Type “incoming\u201d in the search box and select the Incoming Webhooks.<\/p>\n <\/p>\n Step 5: Install the app in your respective Team.<\/p>\n <\/p>\n <\/p>\n Step 6: Select the channel and click on Add Incoming Webhook<\/p>\n <\/p>\n <\/p>\n Step 7: So the Incoming Webhook is being created.<\/p>\n Step 8: All you need is a Webhook URL that you can find as below and you can also customize name and image of the sender and save the setting.<\/p>\n <\/p>\n <\/p>\n Step 9: We will use the Webhook URL in Lambda Function<\/p>\n <\/p>\n <\/p>\n <\/p>\n Step 1: Go to AWS Lambda Console and click on Get Started Now.<\/p>\n <\/p>\n <\/p>\n Step 2: Skip the Blueprint<\/p>\n <\/p>\n Step 3: Insert Name and Description for your Lambda function.<\/p>\n <\/p>\n Step 4: Go to the link https:\/\/s3-us-west-2.amazonaws.com\/cloudthat.training\/Lambda-slack-integration\/lambd-slack-Integraion.dat<\/a> and copy the code in the editor.<\/p>\n Step 5: Create a basic Execution role for lambda<\/p>\n <\/p>\n Step 6: Leave other fields as it is and click on next.<\/p>\n Step 7: Review the function and click on Create Function.<\/p>\n Step 8: Your function is created and now put your webhook URL as \u201cslack_url\u201d\u2019s value.<\/p>\n <\/p>\n <\/p>\n <\/p>\n Step 1: Go to SNS and click on Create Topic.<\/p>\n <\/p>\n Step 2: Provide the Information as shown below.<\/p>\n <\/p>\n Step 3: Now we will create a subscription for the lambda function. Click on Create Subscription.<\/p>\n Step 4: Select Lambda Function as protocol and Endpoint as your lambda function ARN.<\/p>\n <\/p>\n <\/p>\n Step 5: Your Function is now read to get notifications from SNS.<\/p>\n Step 6: You can Test, click on Action and select Configure test event.<\/p>\n <\/p>\n <\/p>\n Step 7: You can get a sample event from following link https:\/\/s3-us-west-2.amazonaws.com\/cloudthat.training\/Lambda-slack-integration\/test-lambda.dat<\/a> and you can check Message in slack.<\/p>\n <\/p>\n <\/p>\n <\/p>\n Step 1: Go to your EC2 Instance and create an alarm by clicking on \u00a0Alarm.<\/p>\n <\/p>\n Step 2: The window will pop up and provide the information as shown below and click on \u201cCreate Alarm\u201d.<\/p>\n Step 3: Your alarm is created.<\/p>\n Step 4: We have provided the Average CPU Utilization to 85 % but if you want to get an alarm quickly, you can put it as 1%.<\/p>\n Step 5: Now if your CPU will go beyond threshold value you will get a Message in Slack.<\/p>\n <\/p>\n So we have configured a lambda function to send Cloudwatch alerts\u00a0to Slack application.We can send any alerts which are sent through SNS to slack.We can also send a custom message by changing the lambda code.If you have any queries regarding this blog you can ask the questions to the forum.clodthat.com<\/a>\u00a0or you can post a comment.<\/p>\n Thank you.<\/p>\n <\/p>\n Cleanup:<\/strong><\/p>\n\n
Task 1: Create an Incoming Webhook in slack.<\/h3>\n
![\"A1\"](\"https:\/\/content.cloudthat.com\/resources\/wp-content\/uploads\/2022\/11\/A1.png\")
<\/a><\/p>\n<\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\nTask 2: Create a Lambda function which sends the notification to the slack.<\/h3>\n
<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\nTask 3: Make the Lambda function subscribe to the SNS Topic.<\/h3>\n
<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\nTask 4: Create an Alarm on the EC2 instance.<\/h3>\n
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