How to Set Up Multi Node Kubernetes k8s Cluster Using Ansible on AWS
By: Moiz Ali Moomin
Tags: AWS, DevOps, Kubernetes, Ansible, Cloud Computing

Integration of AWS, Kubernetes, and Ansible

How to Set Up Multi Node Kubernetes k8s Cluster Using Ansible on AWS

4 Steps Easy to follow: I am going to show you how to set up a Multi-Node Kubernetes Cluster using Ansible inside AWS EC2 in just one click Moiz Ali Moomin Follow Feb 9 · 8 min read

Brief Info about Kubernetes k8s, Redhat Ansible, and AWS

What is Kubernetes?

Kubernetes is a portable, extensible, open-source platform for managing containerized workloads and services, that facilitates both declarative configuration and automation. It has a large, rapidly growing ecosystem. Kubernetes services, support, and tools are widely available.

Kubernetes (also known as k8s or “Kube”) is an open-source container orchestration platform that automates many of the manual processes involved in deploying, managing, and scaling containerized applications.

What is a Kubernetes cluster?

A Kubernetes cluster is a set of nodes that run containerized applications. It allows containers to run across multiple machines and environments: virtual, physical, cloud-based, and on-premises. Kubernetes containers are not restricted to a specific operating system, unlike virtual machines. Instead, they can share operating systems and run anywhere.

There are two kinds of Nodes:

Master Node: Hosts the “Control Plane” i.e. it’s the control center that manages the deployed resources. Some of its components are the Kube-API server , Kube-scheduler , Kube-controller-manager , kublet .

Hosts the “Control Plane” i.e. it’s the control center that manages the deployed resources. Some of its components are the , , , . Worker Nodes: Machines where the actual Containers are running on. Some of the active processes are kublet service, container runtime ( like Docker ), Kube-proxy service.

What is a Kubernetes Multi-Node Cluster?

Kubernetes multi-node cluster is a type of cluster in which there is one master node that controls all the slave nodes. There can be multiple slave nodes in a Kubernetes multi-node cluster. When we deploy any application into the k8s cluster, then it is installed in one of the slave nodes configured.

Why you need Kubernetes and what can it do?

Containers are a good way to bundle and run your applications. In a production environment, you need to manage the containers that run the applications and ensure that there is no downtime. For example, if a container goes down, another container needs to start. Wouldn’t it be easier if this behavior was handled by a system?

That’s how Kubernetes comes to the rescue! Kubernetes provides you with a framework to run distributed systems resiliently. It takes care of scaling and failover for your application, provides deployment patterns, and more.

What is Ansible?

Ansible is an open-source automation tool, or platform, used for IT tasks such as configuration management, application deployment, intraservice orchestration, and provisioning. Automation is crucial these days, with IT environments that are too complex and often need to scale too quickly for system administrators and developers to keep up if they had to do everything manually.

Automation simplifies complex tasks, not just making developers’ jobs more manageable but allowing them to focus attention on other tasks that add value to an organization. In other words, it frees up time and increases efficiency. And Ansible, as noted above, is rapidly rising to the top in the world of automation tools. Let’s look at some of the reasons for Ansible’s popularity.

Advantages of Ansible