Kubernetes

Yesterday, I had an experience that crystallized the kind of work culture I believe in. It wasn’t a complex technical problem or a groundbreaking new technology. It was a first-round interview for a DevOps Engineer position, but it was the human dynamic that made it truly memorable.

The atypical interview setup

On one side of the virtual table was me. I started my journey in the tech world 15 years ago as a Network Engineer right after graduation. Today, I work as a Cloud and Security Architect, carrying a decade and a half of experience.

Kubernetes is orchestraton layer of various Docker and/or containerization manager. Let see in this artcile how to setup a Kubernetes cluster or in short K8s cluster.

Steps involed in setting up Kubernetes Cluster

1. Create VMs which are part of K8s cluster (master and worker nodes).
2. Disable SELinux and SWAP on all nodes.
3. Install kubeadm, kubelet, kubectl and docker in all nodes.
   • start and enable docker and kubelet in all nodes.
4. Initialize the master node.
5. Configure Pod network in master node.
6. Join all worker nodes in cluster.
7. Verify the congigurations

Create VMs

In this example I show four VMs (1 Master and 3 Worker nodes) created in Google Cloud Platform.