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Engine

Docker engine

  • img.png
  • img_1.png
  • connect to remote dcoker host.
  • export DOCKER_HOST=tcp://:2375
  • docker info
  • docker run -H=tcp://:2375

Namespace - pid

  • namespace provides isolation
  • all process running on host kernal, but namespace provodes isolation.
  • same process has different pid in diff namespaces.

  • img_2.png

  • restrict resource, which running container:

  • --cpus=0.5
  • --memory=500m