Category: Kubernetes

Pros and Cons of OKD, Portainer and Kubernetes and Docker Swarm Mode Underlying

If you are about to make a choice about which container orchestrator, sheduler or paltform to choose you have a tough decision ahead. It is difficult to understand the nuances, features and limitations of each platform without having tried them out for a while. I am focusing on your own cluster - ie. not using a public cloud provider like Amazon EKS or Azure Container Service.

So in this short post, I'm going to tell you the main issues and features to look out for.

Openshift OKD

Kubernetes optimized for continuous application development and multi-tenant deployment.

Issues / Cons

  • Bad developer experience as containers don't just work - as they cannot run as root and run as a random user - some containers can only run as root.
  • Your containers need to be specifically built for Openshift (sometime)
  • More secure and less prone to vulnerabilities as containers will never run as root user
  • Frontend can be a bit tricky

Features / Pros

  • Like most Red Hat things - great docs and well designed and stable product
  • Good default - sets up a docker registry for you - using kubernetes in a container
  • Everything is managed within OKD - routes are automatically setup - no need to open ports and point stuff all around the place
  • No support for docker-compose as kubernetes has their own way of doing things - you have to convert your docker compose files.
  • Frontend can be nice and simple

Portainer

Making Docker Management Easy - it uses Docker Swarm - no kubernetes.

Issues / Cons

  • No routes (via domain names) - you have to manually configure and manage ports and routes to the containers

Features / Pros

  • Docker developer friendly - containers just work
  • Containers run as root