The way I see it, Mesos is an API and framework for building and running 
distributed systems. CoreOS is an API and framework for running them.

--


Tom Arnfeld

Developer // DueDil





(+44) 7525940046

25 Christopher Street, London, EC2A 2BS

On Sun, Jan 18, 2015 at 3:01 PM, Jason Giedymin <jason.giedy...@gmail.com>
wrote:

> The value of coreos that immediately comes to mind since I do much work with 
> these tools:
>  - the small foot print, it is a minimal os, meant to run containers. So it 
> throws everything not needed for that out.
>  - containers are the launch vehicle, thus deps are in container land. I can 
> run and test containers with ease, not having to worry about multiple OSes.
>  - with etcd and fleet, coordinating the launch and modification of both 
> machines and cluster make it a breeze. Allowing you to do dynamic mesos 
> scaling up or down. I add nodes at will, across multiple cloud platforms, 
> ready to launch multitude of containers or just mesos.
>  - security. There is a defined write strategy. You cannot write willy nilly 
> to any location.
>  - all the above further allow auto OS updates, which is supported today on 
> all platforms that deploy coreos. This means more frequent updates since the 
> os is minimal, which should increase the security effectiveness when compared 
> to big box superstore OSes like Redhat or Ubuntu. Some platforms charge quite 
> a bit for managed updates of this frequency and level of testing.
> Coreos allows me to keep apps in a configured container that I trust, tested, 
> and works time and time again.
>  
> I see coreos as a compliment.
> As a fyi I'm available for questions, debugging, and client work in this area.
> Hope this helps some, from real world usage.
> Sent from my iPad
>> On Jan 18, 2015, at 9:16 AM, Victor L <vlyamt...@gmail.com> wrote:
>> 
>> I am confused: what's the value of mesos on the top of coreos cluster? Mesos 
>> provides distributed resource management, fault tolerance, etc., but doesn't 
>> coreos provides the same things already? 
>> Thanks

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