Task: Ansible Role to Configure K8S Multi Node Cluster over AWS Cloud.

Task Description:
🔅 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.

For the above steps to be completed, we must know a lot of things and follow few pre-requirements

Pre-Requirements:

a. AWS Account
b. Ansible installed as Controller Node
c. Internet Connectivity

Step1: Here I have Created two roles named as follows:
(a)aws_provision (b) clustersetup

ansible-galaxy init aws_provision
ansible-galaxy init clustersetup

Now we have to do the following steps on the Ansible:

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 SLAVE:
♦Configure iproutetc
♦Token Join command

Let’s get’s started

STEP2: Provisioning AWS with dynamic inventory.

Vars file also contains something for us:

STEP3:Now running the playbook for launching aws

Finally the AWS EC2 Instances are Launched

STEP4: Now Editing the Task file of cluster_setup role:

STEP5: Now We need to create few file which will be required for the role:

STEP6: Finally running the Role:

STEP7:Now we would check the configuration by logging into the Master node and running: kubectl get nodes

Finally!!! our cluster is set up…Hope you guys Enjoyed.