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Tests

This directory contains a Dockerfile that is able to be used locally to test the /etc/eks/boostrap.sh script without having to use a real AL2 EC2 instance for a quick dev-loop. It is still necessary to test the bootstrap script on a real instance since the Docker image is not a fully accurate representation.

AL2 EKS Optimized AMI Docker Image

The image is built using the official AL2 image public.ecr.aws/amazonlinux/amazonlinux:2. It has several mocks installed including the ec2-metadata-mock. Mocks are installed into /sbin, so adding addditional ones as necessary should be as simple as dropping a bash script in the mocks dir named as the command you would like to mock out.

Usage

## The docker context needs to be at the root of the repo
docker build -t eks-optimized-ami -f Dockerfile ../

docker run -it eks-optimized-ami /etc/eks/bootstrap.sh --b64-cluster-ca dGVzdA== --apiserver-endpoint http://my-api-endpoint test

The test-harness.sh script wraps a build and runs test script in the cases dir. Tests scripts within the cases dir are invoked by the test-harness.sh script and have access to the run function. The run function accepts a temporary directory as an argument in order to mount as a volume in the container so that test scripts can check files within the /etc/kubernetes/ directory after a bootstrap run. The remaining arguments to the run function are a path to a script within the AL2 EKS Optimized AMI Docker Container.

Here's an example run call:

run ${TEMP_DIR} /etc/eks/bootstrap.sh \
    --b64-cluster-ca dGVzdA== \
    --apiserver-endpoint http://my-api-endpoint \
    --ip-family ipv4 \
    --dns-cluster-ip 192.168.0.1 \
    test-cluster-name

ECR Public

You may need to logout of ECR public or reauthenticate if your credentials are expired:

docker logout public.ecr.aws

ECR public allow anonymous access, but you cannot have expired credentials loaded.