Introduction

What is Kubernetes

    Kubernetes (k8s) - popular container orchestrator
    Container orchestration - make many servers act like one
    Released by Google in 2015, maintained by large community
    Runs on top of Docker (usually) as a set of APIs in containers
    Provides API / CLI to manage containers across servers
    Many clouds provide it for you
    Many vendors make a "distribution" of it

Why Kubernetes

    Orchestration: Next logical step in journey to a faster DevOps
    First, understand why you may need orchestration, as not every solution needs orchestration
    Number of servers + change rate = benefits of orchestration
    Then, decide which orchestrator
    If Kubernetes, decide which distribution
      cloud or self-managed (Docker Enterprise, Rancher, OpenShift, Canonical, VMWare PKS)
      don't usually need pure upstream version of k8s from Github

Kubernetes or Swarm

    Kubernetes and Swarm are both container orchestrators
    Boths are solid platforms with vendor backing
    Swarm: easier to deploy / manage
    Kubernetes: More features and more flexibility
    Understand both and know your requirements

Advantages of Swarm

    Comes with Docker, single vendor platform
    Easiest orchestrator to deploy / manage yourself
    Follows 80/20 rules (somewhat), 20% of features compared to k8s cover 80% of use cases
    Run anywhere Docker does
      local, cloud, datacenter
      ARM, Windows, 32-bit, etc

Advantages of Kubernetes

    Clouds will deploy / manage Kubernetes for you
    Infrastructure vendors are making their own distributions
    Widest adoptions and community
    Flexible: covers widest set of use cases
    "Kubernetes first" vendor support
    "No one ever got fired for buying IBM"
      picking solutions isn't 100% rational
      trendy, will benefit your career
      CIO / CTO checkbox
Last modified 1yr ago