container.training/slides/k8s/versions-k8s.md

Versions installed

• Kubernetes 1.14.1
• Docker Engine 18.09.5
• Docker Compose 1.21.1

.exercise[

• Check all installed versions:

  kubectl version
  docker version
  docker-compose -v
  

]

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Kubernetes and Docker compatibility

• Kubernetes 1.14 validates Docker Engine versions up to 18.09
  (the latest version when Kubernetes 1.14 was released)

• Kubernetes 1.13 only validates Docker Engine versions up to 18.06

• Is this a problem if I use Kubernetes with a "too recent" Docker Engine?

--

class: extra-details

• No!

• "Validates" = continuous integration builds with very extensive (and expensive) testing

• The Docker API is versioned, and offers strong backward-compatibility

  (If a client uses e.g. API v1.25, the Docker Engine will keep behaving the same way)