I am finding docker swarm, kubernetes quite similar and then there is docker which is a company and the above two are docker clustering tool. So what exactly all these tools are and differences between them?
Docker swarm is a container orchestration tool, meaning that it allows the user to manage multiple containers deployed across multiple host machines. One of the key benefits associated with the operation of a docker swarm is the high level of availability offered for applications.
In a nutshell, Docker is a suite of software development tools for creating, sharing and running individual containers; Kubernetes is a system for operating containerized applications at scale. Think of containers as standardized packaging for microservices with all the needed application code and dependencies inside.
Kubernetes is a complex system. It provides strong cluster state guarantees and unified APIs at the cluster level, making it more difficult to manage scaling behavior. Docker Swarm, at least for inexperienced operators, can be used to deploy and scale containers much faster and easier.
There are lots of articles out there which will explain the differences. In a nutshell:
Both Kubernetes & Docker Swarm can solve these problems for you, but they have different naming conventions and ideas on how to solve them. The differences are relatively conceptual. There are articles that break this down quite well:
https://platform9.com/blog/compare-kubernetes-vs-docker-swarm/ https://torusware.com/blog/2016/09/hands-on-orchestration-docker-1-12-swarm-vs-kubernetes/ http://containerjournal.com/2016/04/07/kubernetes-vs-swarm-container-orchestrator-best/
Essentially, they are similar products in the same space. There are a few caveats to bear in mind though:
Here is a one to one mapping of docker swarm with the Kubernetes.
Credits: janakiram MSV and the watch the full video here
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