shariqmus / k8s-cluster

A CloudFormation script to create a 1 Node Kubernetes Cluster based on Sander Van Vugt Method.

k8s-cluster

A CloudFormation script to create a 1 Node Kubernetes Cluster based on Sander Van Vugt Method.

Pre-requisite:

1. Install and configure AWS CLI

2. Set correct region for AWS CLI

    export AWS_REGION="us-east-1" 
    export AWS_DEFAULT_REGION="us-east1" 
   

Create Master (Control Plane) and Worker (Data Plane)

$ aws cloudformation create-stack --capabilities CAPABILITY_AUTO_EXPAND CAPABILITY_NAMED_IAM --template-body file://my.yml  --stack-name KubernetesMaster --parameters ParameterKey=KeyName,ParameterValue=<key_name>

Join Node

1. Obtain SSH command to connect to Master:

    $ aws cloudformation describe-stacks --query "Stacks[*].Outputs[?OutputKey=='MasterSSH'].OutputValue" --output text
   

2. Login to master using the above SSH command

3. Run command:

    $ sudo -s
    $ export KUBECONFIG=/etc/kubernetes/admin.conf
    $ kubeadm token create --print-join-command
   

4. Obtain SSH command to connect to Worker:

    $ aws cloudformation describe-stacks --query "Stacks[*].Outputs[?OutputKey=='MasterSSH'].OutputValue" --output text
   

5. Login to master using the above SSH command

6. Run the following commands:

    $ sudo -s
    $ kubeadm join... (obtained in Step#3)
   

Troubleshooting

If after kubeadm join, the nodes remain "NotReady', run the following command in Master:

    # export KUBECONFIG=/etc/kubernetes/admin.conf
    # kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"