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What is Kubernetes on AWS?
Google Labs created Kubernetes, a container management platform, to manage containerized applications in many settings, including physical, virtual, and cloud infrastructure. It is open-source technology that aids in developing and controlling application containerization. Kubernetes can automate the distribution, scaling, and management of application containers across clusters. It can build infrastructure that is centered around containers. Running applications on clusters of physical and virtual machine infrastructure is one of Kubernetes' core features. It is also capable of running apps on the cloud. It aids in the transition to infrastructure focused on containers rather than hosts.
Using Kubernetes has certain advantages, such as −
Kubernetes enables you to create sophisticated containerized apps and operate them efficiently over a server cluster.
Kubernetes provides portability and quick, easy deployment. Businesses may expand without redesigning their infrastructure by utilizing various cloud service providers if necessary.
Kubernetes handles high availability both at the application and infrastructure levels; when properly configured, Kubernetes aids in keeping your applications up and running even if one Kubernetes node is offline.
How Kubernetes Works
According to the available compute resources and the resource needs of each container, Kubernetes manages a cluster of compute instances and schedules the execution of containers on the cluster. You may operate and scale one or more containers together as a pod, a natural grouping for containers.
The control plane software for Kubernetes determines when and where to launch your pods, controls traffic routing, and scales your pods depending on usage or other criteria you designate. According to their resource needs, Kubernetes launches pods on your cluster automatically and restarts them if they or the instances they are executing fail to deliver. Kubernetes uses the IP address and unique DNS name assigned to each pod to link your services to one another and outside traffic.
Kubernetes installation on Amazon EC2 Machines
An Amazon EC2 instance is virtual server that executes applications on the AWS architecture in Amazon's Elastic Compute Cloud (EC2). Using Amazon EC2, you may deploy as many or as few virtual servers as you want, set up secure networking, and control storage. The user doesn’t need to predict traffic since Amazon EC2 lets you scale up or down to manage shifting demands or popularity spikes.
Without utilizing Amazon's managed container services, you must first establish the requisite Amazon EC2 instances before installing the Kubernetes distribution on AWS. Users are in charge of provisioning the VMs and installing and administering Kubernetes because Amazon offers virtual machines to host your Kubernetes nodes.
Kubernetes with Amazon EKS
Elastic Kubernetes Service (Amazon EKS) is a managed service that makes it simpler to operate Kubernetes on AWS. Organizations may use EKS to operate Kubernetes without setting up and maintaining a control plane or worker nodes. To put it simply, EKS makes it incredibly easy to administer and maintain highly available Kubernetes clusters on AWS.
The two major elements of each EKS cluster are −
Control Plane − There are three Kubernetes primary nodes in three distinct availability zones that make up the Control Plane (AZs). The network load balancer serves as the gateway for all incoming traffic to Kubernetes API (NLB). It functions on Amazon's virtualized private cloud. The Control Panel is entirely handled by AWS and cannot be managed by the company directly.
Worker Nodes − The Amazon EC2 instances host the Worker Nodes. As a worker node, you may utilize any AWS instance. Provisioning these worker nodes or connecting them through SSH manually is possible. The control plane oversees and keeps track of where and when containers are started, while a cluster of worker nodes maintains and executes the containers for an organization. AWS sets up, grows, and securely administers the Control Plane, while worker nodes are provided using EKS with only one command in the EKS GUI, CLI, or API.
The AWS administration console may be used to set up a new Kubernetes cluster using EKS quickly. Following that, containerized apps may be scheduled in the new cluster in the same manner as in any other Kubernetes setup. You don't have to install Kubernetes, administration or monitoring tools, or supply your nodes if you use EKS. To upgrade to newer versions of Kubernetes as they become available, you will still need to carry out certain manual activities.
Conclusion
The best managed Kubernetes solution currently available is running Kubernetes on AWS. The process of updating goes off without a hitch, and scalability is superb. The close integration with other AWS services is a key advantage of utilizing Kubernetes with AWS.
Running Kubernetes on AWS will free up time for your company to focus solely on the core product while saving you the hassle of managing the infrastructure. It would also assist to reduce the need for additional IT staff by enabling your product to satisfy the steadily growing demand from your user base.
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