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README.md

Redirecting HTTP Traffic to HTTPS with an Application Load Balancer

Preparation Steps

This recipe requires some “prep work” which deploys resources that you’ll build the solution on. You will use the AWS CDK to deploy these resources

In the root of this Chapter’s repo cd to the “207-Using-Load-Balancers-for-HTTPS-Redirections/cdk-AWS-Cookbook-207” directory:

cd 207-Using-Load-Balancers-for-HTTPS-Redirection/cdk-AWS-Cookbook-207/
test -d .venv || python3 -m venv .venv
source .venv/bin/activate
pip install --upgrade pip 
pip install -r requirements.txt
cdk deploy

Wait for the cdk deploy command to complete.

We created a helper.py script to let you easily create and export environment variables to make subsequent commands easier. Run the script, and copy the output to your terminal to export variables:

python helper.py

Move back up a directory to perform the steps for the recipe:

cd ..

For this recipe, you will need to create a modified environment variable from the output:

VPC_PUBLIC_SUBNETS=$(echo ${VPC_PUBLIC_SUBNETS} | tr -d ',"')

Clean up

Delete the ALB

aws elbv2 delete-load-balancer \
    --load-balancer-arn $LOAD_BALANCER_ARN

Delete the Certificate from

aws iam delete-server-certificate --server-certificate-name AWSCookbook207

Delete the target group

aws elbv2 delete-target-group \
    --target-group-arn $TARGET_GROUP

Revoke the security group ingress rule

aws ec2 revoke-security-group-ingress \
    --protocol tcp --port 80 \
    --source-group $ALB_SG_ID \
    --group-id $APP_SG_ID

Delete the Security Group

aws ec2 delete-security-group --group-id $ALB_SG_ID

Go to the cdk-AWS-Cookbook-207 directory:

cd cdk-AWS-Cookbook-207/

To clean up the environment variables, run the helper.py script in this recipe’s cdk- directory with the --unset flag, and copy the output to your terminal to export variables:

python helper.py --unset

Unset the environment variable that you created manually:

unset TASK_ARN
unset LOAD_BALANCER_ARN
unset TARGET_GROUP
unset ALB_SG_ID
unset CERT_ARN
unset CONTAINER_IP
unset HTTPS_LISTENER_ARN
unset LOAD_BALANCER_DNS

Use the AWS CDK to destroy the resources, deactivate your Python virtual environment, and go to the root of the chapter:

cdk destroy && deactivate && rm -r .venv/ && cd ../..