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Webpage status check AWS lambda

Nodejs lambda webpage status checker

Usage

Change The following things to make it work. (index.js)

AWS.config.update({ region: "us-east-1" }); // <-- Cloud Watch region name

const CLOUD_WATCH = new AWS.CloudWatch({
  apiVersion: "2010-08-01",
  accessKeyId: "xxxxxxxxxxxxxxxxx", // <-- access key
  secretAccessKey: "xxxxxxxxxxxxxxxxxx" // <-- secret access key
});
const URL = "https://example.com"; // <-- Add page URL here for status
const SEARCH_STRING = "Your string for check in body part";
const VERSION = `1.0.0`;
const MetricName = "example_status"; // <-- Metric name
const PageName = "example"; // <-- Page name "not relevant to HTML title"

AWS

Log in with your AWS account and follow the steps.

  • Go to the IAM page of AWS.
  • Select Users from the sidebar.
  • Click on create a user.
  • Add username with programmatic access to that user click on next.
  • Now attach policy CloudWatchFullAccess and click next.
  • Add accessKeyId, secretAccessKey, into a index.js file.

Or you can use roles instead of creating the user then you can comment accessKeyId and secretAccessKey.

Installation

npm i install packages.

npm run build this will create a zip file that you can upload on lambda.

Create a lambda function and configs

  • Go to the lambda page of AWS.
  • Create a new function.
  • Add your zip file on the lambda function.
  • Make the role of cloud watch if you have not added User detail in code.
  • Make lambda function execution time-limit 1-2 minutes.

Notifiction config

This function will add a metric in the cloud watch if your webpage is up then you will send count 5 into the cloud watch metric or it will send 0 in metric.

Now you can create a cloud watch alarm on metrics and create SNS alert on email.

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-cloudwatch-createalarm.html

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update the tests as appropriate.

License

MIT