Kubernetes the hard way - Terraform AWS

An attempt to implement Kelsey Hightower's kubernetes-the-hard-way tutorial on AWS using Terraform and Ansible.

Installation

The following steps are required to setup and run this project:

1. Clone the repo
2. Generate an SSH key which can be used to SSH to the Kubernetes EC2 instances which will be created. The generated public/private key pair should be generated in a folder matching the path(s) found in the respective variables PATH_TO_PRIVATE_KEY and PATH_TO_PUBLIC_KEY which are declared in the Terraform variables file. An example of generating such a public/private key pair is given below:

ssh-keygen -t rsa -b 4096 -C "kubernetes-the-hard-way" -f kubernetes_ec2_key

3. Ensure that the AWS credentials profile that you wish to use to run this project is specified correctly in the AWS_PROFILE variable in the Terraform variables file.
4. Install Terraform.
5. Install go.
6. Install the following cfssl tools:

go get -u github.com/cloudflare/cfssl/cmd/cfssl
go get -u github.com/cloudflare/cfssl/cmd/cfssljson
go get -u github.com/cloudflare/cfssl/cmd/mkbundle

7. From the terraform directory execute the following to ensure that the expected resources will be created:

terraform plan

and then to actually create the required AWS resources:

terraform apply

8. Install Ansible:

pip install ansible

9. Install boto

pip install boto

10. From the ansible directory run

./infrastructure.sh

11. Install kubectl
12. From project root run:

./configure-kubectl.sh  [URL OF LOADBALANCER]

where URL OF LOADBALANCER should be the URL of the load balancer created as part of the cluster setup.