[ovirt-users] What prevents from using a very very low-end hardware for manager?

[Doron Fediuck]

----- Original Message -----
> From: "Sven Kieske" <S.Kieske at mittwald.de>
> To: "Doron Fediuck" <dfediuck at redhat.com>, "Nicolas Ecarnot" <nicolas at ecarnot.net>
> Cc: users at ovirt.org
> Sent: Monday, June 23, 2014 9:21:05 AM
> Subject: Re: [ovirt-users] What prevents from using a very very low-end hardware for manager?
> 
> 
> 
> Am 22.06.2014 10:06, schrieb Doron Fediuck:
> > 
> > 
> > 
> > Nicolas (and other on this thread),
> > I'd like to clarify one thing, as indeed this sometimes comes up as a
> > question-
> > Where did oVirt prerequisites come from?
> > 
> > Since the engine may be installed with DWH & reporting, we need to consider
> > all components' needs including the DB;
> > 
> > The application server is configured to use 1 GiB of heap by default,
> > plus around 500 threads, which should result around 2 GiB of RSS in
> > the worst case. To that you have to add the RSS taken by the database,
> > the operating system, etc.
> 
> well, yeah, "worst case" but the 4 GB you mention, aren't specified as
> worst case, but as a minimum. how can a worst case scenario be the
> minimum?
> 

See below; 4 GiB is the minimum to allow DWH & reporting, and 8 GiB
is the recommended amount of RAM.

> On CentOS you're not able imho until some release to even install
> DWH without third party repos.
> 

This is being worked on for 3.5.0. Either way you will get warnings
in the installation now but it will not be blocked.

> Anyway thanks for the interesting insight where all those numbers come
> from!
> 
> > Adding Jasper requirements as well:
> > 
> > Resource Footprint Minimum         Recommended
> > Disk     ~1.3 GiB  10GB free       40GB +
> > RAM                4GB             8GB +
> > Processor          2 core minimum  2.5GHz + multi-core Pentium
> > 
> > So the end results[1] is around the above numbers to make sure we allow
> > this installation to work. It is possible to get along with less, if
> > you will not install some of the components, but this is what we should
> > expect from a standard installation.
> > 
> > Doron
> > 
> > [1] http://www.ovirt.org/Quick_Start_Guide#Prerequisites
> > 
> > 
> > 
> 
> --
> Mit freundlichen Grüßen / Regards
> 
> Sven Kieske
> 
> Systemadministrator
> Mittwald CM Service GmbH & Co. KG
> Königsberger Straße 6
> 32339 Espelkamp
> T: +49-5772-293-100
> F: +49-5772-293-333
> https://www.mittwald.de
> Geschäftsführer: Robert Meyer
> St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen
> Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen