Docker and Containers: The Big Picture

• vmware: multiple apps running safely on the same server

  • Hypervisors virtualization model: a single physical server (processors, memory, diskspace) will be sliced into multiple VMs
    • 4 vms on a single server configured to take 25% of the physical server's processors, memory, disk space
    • Each vm need it's own OS (Windows,linux etc..): uses CPU, RAM, disk space and also requires a license

• Containers: Several containers are created on the physical server which are shared by single OS

  • More apps on the same physical server compared to vm(s)

• Docker: Earlier dotCloud. From 2013, a open source containerization tool.

Links:

• https://github.com/docker