Kubernetes Tutorial

Kubernetes Tutorial for beginners

It’s no secret that Kubernetes is the world’s most popular container management solution. In this Kubernetes tutorial for beginners, you’ll learn how to manage a containerized infrastructure and deploy applications with Kubernetes.
When it comes to managing containers in diverse contexts, such as physical, virtual, and cloud infrastructure, Kubernetes was developed in Google Labs. As an open-source application containerization system, it supports the design and installation of containerized applications.
Kubernetes can automate application deployment, growth, and operations across clusters. A container-centric infrastructure can be set up with it.

Features of Kubernetes

There are some of Kubernetes’ key features.

Structures that can be transported in containers
The construction, integration, and deployment of the product will continue taking.
The application-centric approach to managing
Auto-scalability of infrastructure.
Consistency in the development, testing, and production environments
Infrastructure that is loosely connected such that each component can function independently
Higher density of resource usage

An application running on physical and virtual machine technology clusters is a core aspect of Kubernetes. It also can run programs in a cloud system. You can use it to go from a host-centric infrastructure to one that is container-centric

Kubernetes Master components

Here we listed the top 4 Kubernetes machine components.

ETCD

Nodes in a cluster may utilize it to store input data. Key-value store with data access that can be distributed across multiple nodes. Kubernetes API server can only access it since it may contain sensitive information. Everyone has access to a distributed key-value store (KVS).

API Server is a web-based application

As an API server, Kubernetes performs all cluster operations via the API. There are several tools and modules out there that can communicate with API servers. For communication, Kubeconfig is a package that includes server-side tools and is open Kubernetes.

Controller Manager

In this component, many collectors govern the cluster’s state and execute a function. It gathers and sends data to the API server in a loop. Adjustments are performed to the server’s current state to bring it to the cluster’s shared state.
The system’s replication, gateway, domain, and service account controllers are significant. Nodes, endpoints, etc., are all handled by different control agents that the controller manager operates.

Scheduler

Kubernetes master’s scheduler is one of the most important components. It is a service master that is responsible for the distribution of the burden.
A cluster node’s working load must be tracked, and it must be placed on a node with sufficient capacity to take the task. Also known as the pod allocation mechanism, it is responsible for allocating pods to nodes that are currently accessible. The scheduler handles pod allocation and workload utilization.

A Node Components Kubernetes

To interact with the Kubernetes master, the Node server requires the following components.

Docker

Each node must have Docker installed to run the enclosed application containers properly isolated yet lightweight operating conditions.

Services for Cubelets

Each node has a microservice that sends and receives data from the control plane service. Etcd is a command that is used to read and write control signals.
For commands and work, it communicates with the master component. After then, the kubelet process is in charge of keeping track of work progress and the state of the node server. Furthermore, it manages network capacity, port forwarding, etc.

Proxy Service for Kubernetes

This service runs on each node and acts as an intermediary to make programs available to the remote host.
In addition, it can do simple load balancing. As a result, the network environment is predictable, available, and separated. Node pods, volumes, and secrets are managed as well as the health assessment of new containers.

Kubernetes ─ Master and Node Structure

Kubernetes must be installed before the Virtual Datacenter (VDC) can be set up. These machines can connect over the Internet. If you don’t have a physical or cloud infrastructure, you can build up vDC on PROFITBRICKS for a hands-on approach.
The Master and Node must be set after the IaaS configuration has been completed on any cloud.
It should be noted that the configuration is for PCs. As well as on other Linux workstations, can do the same setup.

Kubernetes Tutorial