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Mesos: Is it optional to use containers?

Let me know if my understanding is correct:

  • By default, a Mesos executor is a process in a slave node. It does not isolate from other process as clean as containers.
  • Mesos supports containers that are mainly used for resource isolation. It is optional, not mandatory to use.

Thank you!

Solution

  • Here is quote from Mesos in Action

    NOTE In addition to Docker and cgroups, Mesos provides another means of isolation for other POSIX-compliant operating systems: posix/cpu, posix/ mem, and posix/disk. It’s worth noting that these isolation methods don’t isolate resources, but instead monitor resource use.

    By default POSIX isolators are enabled so they do not isolate proceses and as you see isolation is optional.