Haripriya, the RM (and Myriad scheduler) run as a Mesos task, and as a part of that task, the Myriad scheduler sends a RegisterFrameworkMessage to the Mesos master, asking Mesos to register a new Myriad framework and communicate with this scheduler process for resource offers and status updates.
So you ask Marathon to launch an app with 1 instance of the RM/MyriadScheduler, and then that runs as a Mesos/Marathon task, and it registers with Mesos as a new framework scheduler, after which point Mesos starts making resource offers to the MyriadScheduler (as well as Marathon), and the MyriadScheduler uses its offers to launch NMs. The slightly tricky/confusing part is that the Myriad scheduler process' resources are accounted for under the Marathon framework that launched it, not as a part of the Myriad framework itself. Only tasks launched by the Myriad scheduler (i.e. NodeManagers) are accounted for under the Myriad framework's share of resources. On Thu, Sep 24, 2015 at 3:59 PM, Aashreya Shankar <ashan...@maprtech.com> wrote: > Hi, > > With Myriad we do not launch Node Manager using Marathon. > We launch ResourceManager from Marathon. > Now Myriad takes care of launching more NodeManagers on Mesos slaves as it > gets flex up requests. > > Thank you > Aashreya > > > On Thu, Sep 24, 2015 at 3:54 PM, Haripriya Ayyalasomayajula < > aharipriy...@gmail.com> wrote: > > > Thanks. > > > > So when we use marathon to launch node manager - it starts as a mesos > slave > > task. In this case how can it register as a framework with Mesos-Master? > is > > there any document that you can point me to - I'm trying to understand > the > > workflow better in this case? > > > > On Thu, Sep 24, 2015 at 12:56 PM, Swapnil Daingade < > > swapnil.daing...@gmail.com> wrote: > > > > > RM is just another Mesos task if launched using something like > Marathon. > > RM > > > in turn will register with Mesos as another framework. > > > You will need mesos slave to launch a mesos task. The RM mesos task can > > get > > > launched on any node having a Mesos slave. > > > > > > You can technically launch a RM on any node which has the right > binaries > > > and config files from the cli > > > but then resources consumed by RM will not be accounted for by Mesos. > > Also > > > you will not have access > > > to features like HA. > > > > > > Regards > > > Swapnil > > > > > > > > > > > > On Thu, Sep 24, 2015 at 12:21 PM, Haripriya Ayyalasomayajula < > > > aharipriy...@gmail.com> wrote: > > > > > > > Hi, > > > > > > > > My understanding was that the Yarn Resource manager will run > alongside > > > > Mesos Master (In practise I was starting a resource manager on a node > > > with > > > > Mesos master running and no mesos slave process) but I see that the > RM > > is > > > > running on a node which is a mesos slave - can anyone please clarify? > > > > > > > > > > > > > > > > > > http://events.linuxfoundation.org/sites/events/files/slides/Apache_Myriad_MesosCon_2015.pdf > > > > (slide 24) > > > > > > > > -- > > > > Regards, > > > > Haripriya Ayyalasomayajula > > > > > > > > > > > > > > > -- > > Regards, > > Haripriya Ayyalasomayajula > > >
