September 23, 2017

Using AWS CodePipeline, AWS CodeBuild, and AWS Lambda for Serverless Automated UI Testing

Testing the user interface of a web application is an important part of the development lifecycle. In this post, I’ll explain how to automate UI testing using serverless technologies, including AWS CodePipeline, AWS CodeBuild, and AWS Lambda. I built a website for UI testing that is hosted in S3. I used Selenium to perform cross-browser UI testing on Chrome, Firefox, and PhantomJS, a headless WebKit browser with Ghost Driver, an implementation of the WebDriver Wire Protocol. I used Python to create test cases for ChromeDriver, FirefoxDriver, or PhatomJSDriver based the browser against which the test is being executed. Resources referred to in this post, including the AWS CloudFormation template, test and status websites hosted in S3, AWS CodeBuild build specification files, AWS Lambda function, and the Python script that performs the test are available in the serverless-automated-ui-testing GitHub repository. Read more

March 14, 2017

Monitor AWS Trusted Advisor Checks

AWS Trusted Advisor is an important tool which provides more than 50 checks across four different categories Cost Optimization, Performance, Security & Fault Tolerance (at the moment of writing this post). But I have noticed that this is not being used more extensively considering the importance of it. Hence I created couple of lambda functions which shall be configured to run on daily basis to refresh the checks and create summary of all the checks and send an email. Read more

June 9, 2016

Scheduling automated EBS snapshots serverless using AWS Lambda

EBS snapshot as backup mechanism is a very common practice and it also has been defined in Backup and Recovery section of EC2 best practices. If you have read my another article Save AWS costs by scheduled start and stop of EC2 instances, similar approach will be used in creating Snapshots too. Using JSON in EC2 Tags enables us to provide granular configuration details. Create an EC2 tag with name as backup and value with details containing time to take backup and retention period. Read more

May 27, 2016

Sync S3 bucket to multiple S3 buckets in different region

Cross-Region Replication for Amazon S3 was introduced last year which enables replicating objects from a S3 bucket to a different S3 bucket located in different region (it can be same/different AWS account). It’s one of the most sought after feature for long time but it doesn’t solve some of the scenarios as defined below. Synchronizing to a bucket in same region. Synchronizing to multiple destination buckets. Object ACLs needs to be set at the source bucket hence multiple different ACLs needs to be set when copying across different accounts. Read more

May 14, 2016

Using AWS IoT button – Simple Example

Amazon did a limited release of the programmable Dash button and unsurprisingly it got sold out within a day. It’s stated in amazon.com that “We don’t know when or if this item will be back in stock.“, hence you might need to wait to get one. I take this opportunity to write a post about how I used the AWS IoT button that I received in AWS re:Invent 2015 to show case AWS IoT to the team. Read more

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