Summary

This repo include the followings:

• A cloudformation template that creates an pair of Elastic Beanstalk application and environment. The pair is to be used as the deployment target of a codepipeline.
• A Cloudformation template that creates an AWS codepipeline. The pipeline gets its source from a github repo, builds and tests using an AWS codebuild project, and deploys the application to an Elastic Beanstalk environment.

Features of the Elastic Beanstalk environment:

• An ELB fronts an autoscaling group.
• The ELB logs access to an S3 bucket.
• The TargetGroup response time triggers scaling action of the auto scaling group.
• Instance logs are streams to CloudWatch log.

Features of the codepipeline:

• Test the application in a codebuild container.
• Deploy application only tests passes.

Create the elastic beanstalk application and environment, and get the application and environment Ids

aws cloudformation deploy --stack-name <elastic beanstalk stack name> --template-file elasticBeanStalk_setup.yml \
        --capabilities CAPABILITY_IAM \
        --parameter-overrides \
        SolutionStackName="64bit Amazon Linux 2018.03 v4.14.1 running Node.js" \
        NotificationEmail=<youremail@yourcom.com> \
        EC2KeyName=<ec2_sshkeypair_name>

aws cloudformation describe-stacks --stack-name <stack_name> | jq ".Stacks[0].Outputs[]"

Create the codepipeline

aws cloudformation deploy --stack-name <codepipeline stack name> --template-file codepipeline_template.yml \
        --capabilities CAPABILITY_IAM \
        --parameter-overrides \
        GitHubUser=<user> \
        GitHubRepo=<repo> \
        GitHubBranch=<branch> \
        GitHubToken=<personal token> \
        ElasticBeanstalkApplication="application ID from earlier step" \
        ElasticBeanstalkEnvironment="environment ID from earlier step" \
        CloudWatchLogGroup=<codebuild log group> \
        CloudWatchLogStream=<codebuild log stream>

Test deployed application

After pipeline creation, there will be an initial release. Open the URL for the Elastic Beanstalk environment to verify that the application is running.

Update the application

Push a change to the application repo branch, the codepipeline should execute.