Kubernetes vs Docker Swarm: What Is the Difference?

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Kubernetes vs Docker Swarm: What Is the Difference?

Vinay Khatri
Last updated on August 18, 2022

    When you move your business to cloud technology, you need to run several apps, and thus you need to manage all of them effectively.  Container orchestration helps you to reduce the complexity of managing apps and gives you better control over the cloud environment.

    At present, there are three major container orchestration systems, namely Kubernetes, Docker-swarm, and Mesos. However, out of these three, people often choose between Kubernetes and Docker Swarm because Mesos is complex to deal with. This is also the reason why Kubernetes vs Docker Swarm has become a popular topic over recent years.

    In this article, we will compare Kubernetes and Docker Swarm to help you to choose the best one according to your requirements.

    Kubernetes vs Docker Swarm: Overview

    Before comparing Kubernetes and Docker-Swarm, you need to know what container orchestration is and why we need it. Well, if you have migrated to the cloud and want to run several apps, you might require containers that provide an ideal environment for apps to run smoothly. Container orchestration helps you to share your app on different servers.

    Basically, container orchestration provides you with a management platform, which gives you full control over your data and apps. You can suspend and close your app with a single click. Also, container orchestration involves various tasks, such as provisioning a host, instantiating a set of containers, rescheduling failed containers, and scaling out the cluster.

    Kubernetes

    kubernetes

    Kubernetes is a container orchestration tool or you can say that it is a container management tool. It can automate container deployment, container scaling or descaling, and container load balancing. It was designed by Google and later on, Google donated it to the Cloud Native Computing Foundation (CNCF). Now, Kubernetes is an open-source container orchestration system. It was released on 7th June 2014 and designed to provide a platform for automating, scaling, deploying, and operating application containers across a cluster of hosts.

    Main Features of Kubernetes

    • Automatic Bin Packing
    • Self-healing
    • Horizontal Scaling
    • Service Discovery and Load Balancing
    • Batch Execution
    • Storage Orchestration
    • Automatic Rollback and Rollouts
    • Secret and Configuration Management

    Docker-Swarm

    Doctor Swarm

    Docker-Swarm is a container orchestration tool owned by Docker. Many times people get confused between docker and Docker-Swarm; thus, it is important to understand that Docker-Swarm is the actual container orchestration tool and not the Docker. It was initially released in 2013 with an aim to reduce the complexity of container orchestration. Today, Docker-Swarm is known for being simple yet highly powerful. It is an open-source platform that is available for Linux, Windows, and macOS.

    Main Features of Docker Swarm

    • Cluster Management integrated with Docker Engine
    • Decentralized Design
    • Declarative Service Model
    • Scaling
    • Desired State Reconciliation
    • Multi-host Networking
    • Service Discovery
    • Load Balancing
    • Secure by Default
    • Rolling Updates

    Kubernetes vs Docker Swarm: Head-to-Head Comparison

    Let's understand all the crucial differences between Kubernetes and Docker Swarm with the help of the following comparison table:

    Parameters Kubernetes Docker Swarm
    Developer Google Docker Inc.
    Source code Open-source Open-source
    Installation Setting up Kubernetes is quite complicated and tricky. On the other hand, Docker Swarm specifically aims to reduce the complexity associated with the setup of a container orchestration system; thus, installing and setting it up is simple.
    Cluster The cluster strength is strong. The cluster strength in Docker Swarm is also strong.
    Functionality The real potential of Kubernetes functionality becomes evident when you are dealing with hundreds of containers. If we consider a small number of containers, around 10 to 20, Swarm works the same as Kubernetes. However, when it comes to managing a large number of containers, Swarm is not as efficient as Kubernetes.
    GUI Kubernetes provides you with a GUI dashboard, which makes it easy to control your cluster. Docker Swarm does not offer a GUI.
    Fault tolerance High Low
    Scaling In Kubernetes, the scalability is easy but slow. When it comes to scalability, Swarm is far better than Kubernetes. The scalability offered by Swarm is 4 to 5 times faster than Kubernetes.
    Rollback Kubernetes offers the automatic rollback feature. There is no automatic rollback feature in Swarm.
    Auto-Scaling It comes with the auto-scaling feature, which comes in handy for accommodating the sudden increase in the number of users of an app. Swarm doesn't offer the auto-scaling feature.
    Logging and monitoring There is an in-built logging and monitoring tool in Kubernetes. There is no in-built tool for logging and monitoring in Swarm, but you can use a third-party tool for the same.
    Community Kubernetes has a quite large community across the globe. Swarm is growing as a community, but it is not as large as Kubernetes.

    Conclusion

    While searching for a container orchestration tool, you will likely end up getting confused between Kubernetes and Docker Swarm. While both of them help you manage containers, there are several differences between the two in terms of features and capabilities. Through this article, we have introduced you to both the container orchestration tools and highlighted all the differences between them.

    We hope that by understanding how Kubernetes and Docker Swarm are different from each other, it will become easier for you to choose the one that seems to be the best fit for your requirements. Also, if you have any suggestions or queries, feel free to share them with us in the comments section below.

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    FAQs


    Docker Swarm and Kubernetes are both container orchestration platforms. While Docker Swarm is ideal for simple and easy-to-deploy applications, Kubernetes is a solution for complex applications that require a high level of configuration.

    If you are a developer who desires to have an in-depth understanding of the deployment pipeline, you should learn Kubernetes.

    Yes, Docker Swarm is still in use and not deprecated. It is still a good solution for Docker multi-host orchestration.

    No, there is no such obligation to learn Docker Swarm before Kubernetes. You can directly learn Kubernetes and skip Docker Swarm.

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