Containers

A container shares the kernel and system resources of its host. This is different from a virtual machine because a virtual machine has its own kernel and related resources. Containers do have their own filesystem tree. A very basic use of containers is to separate applications and runtimes from each other. There are more advanced uses that we are not able to explore here. What is important here is that OpenStack can be used to manage these containers. Containers are more lightweight than virtual machines but still provide a level of isolation for deployments. These can be managed, conceptually, very much like a virtual machine.