Kubernetes Setup

Setting Up Kubernetes

In Local Environments

• Minikube: Lightweight Kubernetes for local development and testing.
• MicroK8s: Minimal, lightweight Kubernetes distribution.
• kubeadm: Tool to bootstrap Kubernetes clusters.

In Cloud Environments

• GCP (Google Cloud Platform)
• Azure
• AWS (Amazon Web Services)

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Pods in Kubernetes

A Pod is a single instance of an application, encapsulated in a Kubernetes object.
Pods usually have a one-to-one relationship with containers.

Types of Pods:

• Single-Container Pods: Most common, running a single application container.
• Multi-Container Pods: A single pod can have multiple containers, including helper containers for sidecar tasks.

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Basic kubectl Commands

• Run an NGINX Pod:

  kubectl run nginx --image=nginx
  

kubectl run nginx --image nginx - run nginx image kubectl get pods - display the list of pods

A note about creating pods using kubectl run.

To create a pod from the command line, use the command:

Create an NGINX Pod

kubectl run nginx --image=nginx

As of version 1.18, kubectl run (without any arguments such as --generator ) will create a pod instead of a deployment.

To create a deployment using imperative command, use kubectl create:

kubectl create deployment nginx --image=nginx

Kubernetes Concepts – https://kubernetes.io/docs/concepts/

Pod Overview- https://kubernetes.io/docs/concepts/workloads/pods/pod-overview/