Docker adoption is still growing exponentially and more and more companies have started using it in Production.
It is important to use an orchestration platform to scale and manage your containers. Imagine a situation where you have been using Docker for a little while, and have deployed on a few different servers. Your application starts getting massive traffic, and you need to scale up fast, how will you go from 3 servers to 40 servers that you may require? And how will you decide which container should go where? How would you monitor all these containers and make sure they are restarted if they exit?
This is where Kubernetes comes in.
You might just ask, Can just as easily achieve the same result with Docker Swarm, with far less complexity too.
It’s not that easy to compare Kubernetes and Docker Swarm. Why?
Docker Swarm is preferred in environments where simplicity and fast development is preferred. Whereas Kubernetes is fit for the environments where medium to large clusters are running complex applications.
Unquestionably, Kubernetes gets a lot of attention given that it has a huge community out there(The Kubernetes project on GitHub has over 1500 contributors and they actively release tons of tooling, extensions, etc.) and it easily rationalizes applications, particularly web-centric applications. But it may not always be the best choice for a given context and hence Kubernetes vs Swarm is not always the question to be asked, rather the kind of questions that need to be asked when considering container orchestration need to think the types of applications that need to run.
Along with all this, you also need to consider the facts and ease with
Installation and set-up
Logging and monitoring
For example, when it comes to installation and setup, Kubernetes can be quite complex with steep learning curve whereas Docker Swarm is easy to install with a fast setup.
What do you prefer, Kubernetes or Docker Swarm?