What are the differences between k8s and Docker?
Kubernetes (k8s) and Docker are two different technologies with the following main differences:
- Goal: Docker is a containerization platform used for creating, packaging, and distributing containers for applications and their dependencies, while Kubernetes is a container orchestration platform used for automating the deployment, scaling, and management of containers.
- Functionality: Docker offers a lightweight, portable containerized solution that allows applications to run in different environments. On the other hand, Kubernetes provides a cluster management platform for managing and orchestrating large-scale container clusters, achieving high availability, automatic scaling, and load balancing functionalities.
- Docker handles the lifecycle of containers, such as creating, starting, stopping, and destroying them. On the other hand, Kubernetes manages container clusters, scheduling containers, monitoring their status, and automatically scaling them.
- Hierarchy: Docker is a foundational container engine that allows for creating and managing containers. Kubernetes, on the other hand, is a container orchestration platform built on top of Docker, using Docker’s capabilities to manage and deploy containers.
- Abstraction levels: Docker offers a lower-level container virtualization technology to run multiple isolated containers on a single host, while Kubernetes provides a higher-level abstraction to run and manage container clusters across multiple hosts.
In summary, Docker is a container technology that enables the creation and management of containers, while Kubernetes is a container orchestration platform used for managing and orchestrating large-scale container clusters. These two can be used together with Docker as the container engine providing container capabilities, and Kubernetes as the container orchestration platform providing the ability to manage and scale container clusters.