[130916] in North American Network Operators' Group
RE: Pica8 - Open Source Cloud Switch
daemon@ATHENA.MIT.EDU (Brandon Kim)
Mon Oct 18 11:50:55 2010
From: Brandon Kim <brandon.kim@brandontek.com>
To: <gbonser@seven.com>
Date: Mon, 18 Oct 2010 11:50:42 -0400
In-Reply-To: <5A6D953473350C4B9995546AFE9939EE0B14C35B@RWC-EX1.corp.seven.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
George:
Nice answer. Do you think cloud services is based on an oversubscription mo=
del?
Where they hope those who purchase servers don't actually max them out memo=
ry/CPU wise?
Do you also believer that cloud services should never have any downtime? To=
me=2C cloud services is synonymous with redundancy....
> Subject: RE: Pica8 - Open Source Cloud Switch
> Date: Mon=2C 18 Oct 2010 08:17:09 -0700
> From: gbonser@seven.com
> To: brandon.kim@brandontek.com
> CC: nanog@nanog.org
>=20
> > -----Original Message-----
> > From: Brandon Kim=20
> > Sent: Monday=2C October 18=2C 2010 7:58 AM
> >=20
> > Cc: nanog@nanog.org
> > Subject: RE: Pica8 - Open Source Cloud Switch
> >=20
> >=20
> > Has our industry ever really fundamentally defined what is "cloud
> > computing"?????
> >=20
> > Even though "MPLS" is sort of a buzzword too=2C we can define it=2C how=
it
> > works=2C it's protocol and such...
> >=20
> > But cloud computing?
>=20
> My take on "cloud computing" is simply the provisioning servers or
> virtual servers (say=2C VMWare or KVM) on the fly as needed. So you woul=
d
> have a "pool" of servers. When load for one application rises=2C more
> servers for that application are taken from the pool and added to the
> mix as needed.
>=20
> When load drops=2C that instances are removed from the rotation handling
> that application and returned to the pool of free (virtual) servers.
>=20
> Providers of network gear have been working on applications that monitor
> the gear in the application delivery path (e.g. metrics on load
> balancers) and automatically deploy instances as needed to handle that
> application. This would be more of interest to providers of "bursty"
> applications where they might have high load sometimes but a relatively
> low "base" load. It could also be of interest to people who serve
> customers in different time zones=2C such as the US and Europe where the
> US application can be turned down at night and an application serving
> Europe loaded up during their business day.
>=20
> It could also be of interest for someone who is expecting a temporary
> "surge" of activity. It leads=2C though=2C to a completely different kin=
d
> of attack called the "denial of sustainability" attack where a
> cloud-based provider is hit with a flood of "legitimate" transactions
> causing the "cloud" management to kick in more servers to handle the
> additional load. If that cloud is rented=2C a content provider could be
> hit with a huge bill.
>=20
=
