Kubernetes

Kubernetes (also known as "K8s") is an open-source container orchestration system used for automating the deployment, scaling, and management of containerized applications. It was developed by Google and is now maintained by the Cloud Native Computing Foundation (CNCF).

Kubernetes allows developers to deploy and manage containerized applications on a cluster of computers, providing an abstraction layer that handles complex tasks such as load balancing, scaling, and fault tolerance. It also provides a range of features, such as automated rollouts and rollbacks, self-healing, and service discovery.

Kubernetes is a highly scalable and flexible platform that can be used to deploy and manage applications across a wide range of environments, including on-premise data centers, public and private clouds, and hybrid environments. It is widely used in the industry, with support from major cloud providers such as Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform.

Building blocks of kubernetes:

Kubernetes is built on a set of key building blocks that work together to provide a powerful and flexible platform for container orchestration. Here are some of the most important building blocks of Kubernetes:

1. Nodes: These are the worker machines that run containerized applications. Nodes can be physical machines or virtual machines running in a cloud environment.

2. Pods: A pod is the smallest deployable unit in Kubernetes. It contains one or more containers that share the same network namespace and storage volume.

3. Services: Services provide a stable IP address and DNS name for a set of pods, allowing applications to access them using a consistent endpoint.

4. ReplicaSets: ReplicaSets ensure that a specified number of pod replicas are running at all times, providing high availability and scalability.

5. Deployments: Deployments manage the rollout and scaling of replica sets, allowing for rolling updates and rollbacks.

6. ConfigMaps and Secrets: ConfigMaps and Secrets are used to manage configuration data and sensitive information, such as passwords and keys.

7. Namespaces: Namespaces provide a way to partition a Kubernetes cluster into multiple virtual clusters, allowing different teams or applications to have their own isolated environments.

8. Persistent Volumes and Persistent Volume Claims: These are used to provide persistent storage for stateful applications.

9. Controllers: Controllers are responsible for maintaining the desired state of Kubernetes objects, such as pods, replica sets, and deployments.

These building blocks can be used in various combinations to create complex and highly scalable applications on Kubernetes