How to Configure K8S Multi-Node Cluster over AWS Cloud via Ansible Role
INTRODUCTION:
🔅 Create Ansible Playbook to launch 3 AWS EC2 Instance
🔅 Create Ansible Playbook to configure Docker over those instances.
🔅 Create Playbook to configure K8S Master, K8S Worker Nodes on the above created EC2 Instances using kubeadm.
🔅 Convert Playbook into roles and Upload those role on your Ansible Galaxy.
FIRST STEP
Launch three ec2 instances on AWS cloud
In this task, we would deploy a Kubernetes cluster on AWS cloud via Ansible roles.
I have made two different roles for the same purpose named:
aws_provision is for launching two ec2-instances and cluster_setup is for setting Kubernetes cluster on the launched ec2-instances.
This is the main task file for AWS provision.
This is the vars file to store variables for the aws_provision.
Now we would run the ansible-playbook to run the aws_provision role.
We can see now that we have launched three ec2 instances on AWS.
SECOND STEP
Configure Kubernetes consisting one Master and two Worker Nodes.
Steps involving are:
FOR MASTER AND SLAVE BOTH:
Configure yum for kubernetes
Installing docker
Install kubeadm, kubelet, kubectl
Start kubelet service
Pull the images
Edit Daemon.json
Restart the docker service
Install Iproute-tc
kube init
FOR MASTER ONLY :
pull images for kubeadm
Configuring Master via kubeadm
FOR WORKER NODE ONLY:
copying admin file
Pasting the token file
Running the token file
Now, this is the task file for cluster setup.
this is the file folder for role cluster_setup
Now we would run the ansible-playbook to configure the cluster.
Now we would check the configuration by logging into the Master node and running: kubectl get nodes
Finally!!! our cluster is set up.
Refer to the code below for any confusion.
