cloudstack-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From JoonHyun Pac <shiba...@gmail.com>
Subject Re: maximum hosts per cluster
Date Thu, 25 Oct 2012 12:34:47 GMT
Cloudstack will not communicate with each hosts but pool master.
That's why you should avoid many hosts in one pool.

In our environment, 16 hosts in one pool cause serious load to master host
and XAPI works done pretty slowly than 8 hosts pool.

Thanks,

Joonhyun Pac

On Thu, Oct 25, 2012 at 9:13 PM, Julien Garet <julien.garet@inria.fr> wrote:

> > De: "JoonHyun Pac" <shibaboy@gmail.com>
> > À: cloudstack-users@incubator.apache.org
> > Envoyé: Jeudi 25 Octobre 2012 12:59:50
> > Objet: Re: maximum hosts per cluster
>
> > The limit of hosts are 16 but it's too big for just one master host.
> > I'm using 8 hosts per cluster and it works fine.
> What happens if you have 16 hosts ? What's the difference from the cloud
> controller to have 16 hosts in one cluster or 16 hosts in two clusters of 8.
>
> > On Thu, Oct 25, 2012 at 5:59 PM, Julien Garet <julien.garet@inria.fr>
> > wrote:
>
> > > Hello,
> > >
> > >
> > > Still in deployment planning, I am wondering how much hosts should
> > > I put
> > > in a single cluster ? I am using Cloudstack 3.0.2 with KVM on
> > > CentOS 6.2
> > > hosts.
> > >
> > >
> > > What are the advantages and drawbacks of putting hosts in the same
> > > cluster
> > > ?
> > >
> > >
> > > From what I see, if I am in the same cluster, I can migrate
> > > instances
> > > between hosts, what I can not do between different clusters, I can
> > > also
> > > migrate primary storage.
> > >
> > >
> > > What happens if I had more than 16 hosts in a KVM cluster (16 seems
> > > to be
> > > the limit from the advanced install guide).
> > >
> > >
> > > I am using iSCSI luns as primary storage and Dell C6220 servers (4
> > > servers
> > > in 2U chassis, sharing power input). I thought first I would divide
> > > each
> > > chassis in its own cluster, but, from management side, I need to
> > > create a
> > > new lun for every chassis. If I need to do some operations on a
> > > chassis, I
> > > need to put all servers in the cluster in maintenance mode, but it
> > > seems I
> > > can't do that ! At least one server should be up, no ?
> > >
> > >
> > > Any advice would be greatly appreciated
> > >
> > >
> > > ------
> > > Attention, changement d'adresse et de numéro de téléphone !
> > > Julien GARET
> > > DSI / SESI
> > > Bureau B201
> > > Inria Lille-Nord Europe
> > > Bâtiment B, 6 rue Heloise
> > > 59650 Villeneuve d'Ascq
> > > téléphone: 03.59.35.86.86
> > > portable: 06.79.88.10.47
> > >
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message