DC/OS is also open source, Apache 2.0, same as Mesos.
In fact DC/OS includes open source Mesos with no modifications, what they add is packaged bunch of different API providers running as Mesos apps: Marathon, DNS, etc., and also a somewhat dumb installer.
In my org, we run open source Marathon/Mesos deployments for years without any DC/OS additionals, and also a slightly modified versions of tooling below:
There are also available several open-source auto-scalers for Marathon/Mesos apart from these two.
This new one from Yelp seems to be promising, since it's battle tested within organization which has many kinds of different workloads, so I would give it a try for some new cluster.
In fact DC/OS includes open source Mesos with no modifications, what they add is packaged bunch of different API providers running as Mesos apps: Marathon, DNS, etc., and also a somewhat dumb installer.
Auto-scaling was long possible for Marathon/Mesos, and is described at DC/OS website, though does not involve any of DC/OS additionals: https://docs.d2iq.com/mesosphere/dcos/2.0/tutorials/autoscal... .
In my org, we run open source Marathon/Mesos deployments for years without any DC/OS additionals, and also a slightly modified versions of tooling below:
https://github.com/mesosphere/marathon-autoscale https://github.com/mesosphere/marathon-lb-autoscale
There are also available several open-source auto-scalers for Marathon/Mesos apart from these two.
This new one from Yelp seems to be promising, since it's battle tested within organization which has many kinds of different workloads, so I would give it a try for some new cluster.