Index

Introduction

Kubernetes is the Greek word for Helmsman of a ship. This name was chosen because it oversees a set of servers and decides where to deploy containerized applications, when to scale up or down the number of application replicas and what to do when an application or server stops working. The first thing one would need to understand before learning Kubernetes is, Containers. Containers are virtual environments which are isolated and have no knowledge of your operating system. A container requires a container engine (for example: Docker) to be installed on any Operating system on which it is expected to work.

Next Steps:

• Install Docker: Your docker container runtime should run before your spin up your cluster, you can go with other options like podman too rather than Docker. To check if you have docker installed successfully and running just type "docker" in your CLI and hit enter if not start your docker desktop application.
• Install Minikube : It helps your learn Kubernetes but not fit for production, and lacks security and networking abilities by other cloud providers.This will help you to try and test the kubernetes commands on your local machine for free
• Start your cluster: Type minicube start to spinup your cluster. Please note that in different cloud providers you would use a different command line tool such as minicube to start the cluster rather than minicube. Then to interact with the cluster you use kubectl
• Infrastructure as Code and Gitops: Two common terms in Cloud native tech. You deploy changes with gitops workflows. You can save the desired state of your cluster in a set of files and manage them with git. In Kubernetes the most commonly used type of files are YAML. YAML is a data serialization langugage similar to JSON and XML. Such languages provide a standard syntax for communication so that devices, operating systems and programming laguages and share data between each other easily. YAML is designed to be read and understood by humans. See the firstyaml.yaml file to understand an example of YAML syntax.
• Namespaces: Namespaces are used for better organization of things and isolate your workloads/apps and microservices. There are namespaces that come with Kubernetes by default. You can write YAML files to create namespaces.