Kubernetes/Amazon EKS

Bootstrap/create EKS Cluster

# Generate ssh key to be used to connect to Kubernetes EKS Ec2 worker instances
ssh-keygen

# Install kubectl
mkdir -p ~/.kube
sudo curl --location -o /usr/local/bin/kubectl "https://amazon-eks.s3-us-west-2.amazonaws.com/1.10.3/2018-07-26/bin/linux/amd64/kubectl"
sudo chmod +x /usr/local/bin/kubectl
kubectl version --short --client

# Install aws-iam-authenticator
go get -u -v github.com/kubernetes-sigs/aws-iam-authenticator/cmd/aws-iam-authenticator
sudo mv ~/go/bin/aws-iam-authenticator /usr/local/bin/aws-iam-authenticator
aws-iam-authenticator help

# Install jq
sudo yum -y install jq #Amazon Linux
sudo apt-get jq -y     #Ubuntu

# Download deployable applications
mkdir ~/environment #place of deployables to EKS, applications, policies etc
cd ~/environment
git clone https://github.com/brentley/ecsdemo-frontend.git
git clone https://github.com/brentley/ecsdemo-nodejs.git
git clone https://github.com/brentley/ecsdemo-crystal.git

# Configure awscli
rm -vf ${HOME}/.aws/credentials
export AWS_REGION=$(curl -s 169.254.169.254/latest/dynamic/instance-identity/document | jq -r .region)
echo "export AWS_REGION=${AWS_REGION}" >> ~/.bash_profile
aws configure set default.region ${AWS_REGION}
aws configure get default.region

# Install eksctl by Waveworks
curl --location "https://github.com/weaveworks/eksctl/releases/download/latest_release/eksctl_$(uname -s)_amd64.tar.gz" | tar xz -C /tmp
sudo mv -v /tmp/eksctl /usr/local/bin
eksctl version

# Create EKS cluster
$ eksctl create cluster --name=eksworkshop-eksctl --nodes=3 --node-ami=auto --region=${AWS_REGION}
2018-11-24T12:54:41Z [ℹ]  using region eu-west-1
2018-11-24T12:54:42Z [ℹ]  setting availability zones to [eu-west-1b eu-west-1a eu-west-1c]
2018-11-24T12:54:42Z [ℹ]  subnets for eu-west-1b - public:192.168.0.0/19 private:192.168.96.0/19
2018-11-24T12:54:42Z [ℹ]  subnets for eu-west-1a - public:192.168.32.0/19 private:192.168.128.0/19
2018-11-24T12:54:42Z [ℹ]  subnets for eu-west-1c - public:192.168.64.0/19 private:192.168.160.0/19
2018-11-24T12:54:43Z [ℹ]  using "ami-00c3b2d35bdddffff" for nodes
2018-11-24T12:54:43Z [ℹ]  creating EKS cluster "eksworkshop-eksctl" in "eu-west-1" region
2018-11-24T12:54:43Z [ℹ]  will create 2 separate CloudFormation stacks for cluster itself and the initial nodegroup
2018-11-24T12:54:43Z [ℹ]  if you encounter any issues, check CloudFormation console or try 'eksctl utils describe-stacks --region=eu-west-1 --name=eksworkshop-eksctl'
2018-11-24T12:54:43Z [ℹ]  creating cluster stack "eksctl-eksworkshop-eksctl-cluster"
2018-11-24T13:06:38Z [ℹ]  creating nodegroup stack "eksctl-eksworkshop-eksctl-nodegroup-0"
2018-11-24T13:10:16Z [✔]  all EKS cluster resource for "eksworkshop-eksctl" had been created
2018-11-24T13:10:16Z [✔]  saved kubeconfig as "/home/ec2-user/.kube/config"
2018-11-24T13:10:16Z [ℹ]  the cluster has 0 nodes
2018-11-24T13:10:16Z [ℹ]  waiting for at least 3 nodes to become ready
2018-11-24T13:10:47Z [ℹ]  the cluster has 3 nodes
2018-11-24T13:10:47Z [ℹ]  node "ip-192-168-13-5.eu-west-1.compute.internal" is ready
2018-11-24T13:10:47Z [ℹ]  node "ip-192-168-41-230.eu-west-1.compute.internal" is ready
2018-11-24T13:10:47Z [ℹ]  node "ip-192-168-79-54.eu-west-1.compute.internal" is ready
2018-11-24T13:10:47Z [ℹ]  kubectl command should work with "/home/ec2-user/.kube/config", try 'kubectl get nodes'
2018-11-24T13:10:47Z [✔]  EKS cluster "eksworkshop-eksctl" in "eu-west-1" region is ready

References

• eksworkshop Official Amazon EKS Workshop