Introduction To Kubernetes

Introduction To Kubernetes

An orchestration tool takes care of provisioning and deployment, allocation of resources, load balancing, and many other important aspects of any system. Optimize clusters for cost, performance, resilience, capacity, and scalability. Apply best practices for observability, monitoring, and security in production. Security Controls.

With containerization gaining popularity over time and revolutionizing the process of building, shipping, and maintaining applications, it became the need of the hour to effectively manage these containers. Many tools were introduced to manage the lifecycle of these containers in large-scale systems. These tools were called container orchestration tools.

An orchestration tool takes care of provisioning and deployment, allocation of resources, load balancing, service discovery, high availability, and other important aspects of any system. By using container orchestration tools like Docker Swarm, Kubernetes, etc. we can easily describe the configurations such as volume mounts, env variables, image source, CPU, Memory configuration, etc., and use them as blueprints for creating containers. 

In this article, we will take a look at the basic components of Kubernetes.

Cluster: As the name suggests, a cluster is a set that consists of master and worker Nodes. It has at least one master node and can have one or many worker nodes. A master node consists of a control plane to manage the worker nodes. The control plane has several components which make the decisions such as scheduling, life cycle management, etc.

The components of the control plane are Kube-APIserver, etcd, kube schedular, kube-controller-manager, cloud-controller-manager.

Some components of the control plane run on each node. These components are kubelet, kube-proxy, container-runtime.

We will dive deeper into these components in PART-2 of this blog series.

Node: The containers placed in pods are run on Kubernetes worker nodes. Each node has the necessary configuration and runtime environment to support the containers running in the pod. Nodes are managed by the control plane.

container orchestartion kubernetes 10

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