Let’s see what is docker and kubernetes.
What is kubernetes?
It is an open-source technology that allows the orchestration of the container so whatever container that we make using any of the container technology rather than docker or any different one it allows us to manage those containers and scale up according to the requirement.
What is Docker?
Docker is a container technology that allows a developer to package an entire application within a single container with all the parts which is needed for that particular application so it isolates the entire application from the operating system and packages it into a single container.
Here we going to see what is differences between docker and kubernetes.
|Mostly used in CI/CD pipeline for |
automating builds and deploy
|Comes in the picture after the |
|Docker defines how you package |
|It defines how you scale and |
monitor those containers in an
|It is a container platform to |
configure, build and distribute
|It is a system to manage a cluster of containers|
|No web UI||Defaults kubernetes dashboard |
which has a web UI for monitoring the clusters for the containers
How Docker and kubernetes work together?
At the time of the local development process, you will be containerizing your applications into a single container using docker and those containers will be deployed to any of the servers using the CI/CD build process. Once those containers are been deployed to any of the staging servers or production servers you have to monitor those containers that time kubernetes comes into the picture, how you monitor, how you scale those containers how you schedule those containers are all been handled by kubernetes, it provides complete orchestration of the containers that we have deployed to the servers.
What is the Docker swarm?
Docker swarm is a tool used to cluster and orchestrate docker containers, here we have some concerns, kubernetes also doing the same thing, then why docker swarm.
Let’s analyze why docker swarm comes in the frame when we have kubernetes,
|Complex Installation||Simple installation|
|It is complex with advanced |
features and is very powerful also
so it has a very higher learning
|It is light weight and has limited |
features, so have a low learning
|Support auto-scaling||Supports manual scaling|
|It has built-in monitoring tools to |
|It relies on third party monitoring|
|Does not support auto load |
|Supports auto load balancer|
|Need for a separate CLI tool||Works with integrated docker CLI |
You might be thinking which one is better Kubernetes or Docker?
Kubernetes can run without docker and Dockers can run without kubernetes, however best practices to combine both technologies to get the best out.