How Docker and Kubernetes work together to deploy applications

Referred Link - https://www.linkedin.com/posts/megha-kadur_heres-a-simplified-explanation-of-how-docker-activity-7352923738088099840-4qD4

Starting with Docker:
Applications are packaged into Docker Images, which include all the dependencies and runtime required to operate. These images are launched as Docker Containers, the running instances of the image.

Moving to Kubernetes:
The Docker Container is deployed into Kubernetes as part of a Pod, which is the smallest deployable unit in Kubernetes. A Pod can host one or more containers and serve as their operational environment.

Resource Utilization in Kubernetes:
ConfigMap: Provides configuration settings for Pods.
Secret: Stores sensitive data like passwords.
Persistent Volume: Manages storage requirements for Pods.

External Access:
A Service in Kubernetes provides network access to Pods. This Service is managed by a Deployment, which maintains the desired number of Pod replicas using a ReplicaSet for scalability and fault tolerance.

External Interaction:
End-users or other systems interact with the application through a Load Balancer, which routes requests to the appropriate Service within the Kubernetes cluster.

In Summary:
Docker containerizes the application, while Kubernetes orchestrates and scales it, ensuring reliability and efficient resource utilization. This system allows external users to seamlessly access the application while Kubernetes handles the underlying complexity.

Tags:

#Docker, #KuberNetes, @DevOps