Amazon EKS Cluster bootstrap using Terraform

A Terraform script to create a Amazon EKS Cluster supporting multiple environments and a production-like setup along with basic bootsrapping of initial required containers for the newly created Kubernetes cluster

Pre-requisites

Note : Commands are all specific to CentOS 7

• Download & install Terraform 3.6

wget https://releases.hashicorp.com/terraform/0.11.7/terraform_0.11.7_linux_amd64.zip
unzip terraform_0.11.7_linux_amd64.zip
sudo mv terraform /usr/bin/

• Download & install Kubectl

cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
EOF
yum install -y kubectl

• Download & Install Helm

wget https://storage.googleapis.com/kubernetes-helm/helm-v2.11.0-linux-amd64.tar.gz
tar -zxvf helm-v2.11.0-linux-amd64.tar.gz
sudo mv linux-amd64/helm /usr/bin/

• Download & Install Docker (OPTIONAL)

sudo yum install -y yum-utils \
device-mapper-persistent-data \
lvm2

sudo yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo

sudo yum install docker-ce    

• Download & Install AWS CLI

wget https://bootstrap.pypa.io/get-pip.py
python get-pip.py
pip install awscli --upgrade --user

• Login to your Amazon console and create an S3 Bucket where you will be storing your terraform state files , you can also reuse an existing bucket and create a new folder inside it and pass the folder name in the s3 bucket key.

Installation

# Clone the repository 
git clone https://github.com/dipayan/aws-eks-iaac.git
# Change into the directory
cd aws-eks-iaac
cd terraform
# Create a terraform.tfvars
cp terraform.tfvars terraform.tfvars.sample
# Modify the new file with the required values
# Initialize the script
make init
# Plan for the infrastructure setup
make plan
# Once validated and confirmed run the following to create the infra
make apply

Using the cluster

Once installation is finished you can run the following

kubectl get no
kubectl get po

Author

Dipayan Biswas