On 26/03/13 8:10 PM, "Adam Grochowski" <adam.grochow...@sungard.com> wrote:
>Hi, >So I'm curious - what is the proposed method to move a single IP >across zones (presuming these zones span regions). As Chiradeep >mentioned earlier, /24 is the largest block that will be advertised, >so it would necessitate moving (or advertising in two locations, and >back hauling back to one) an entire class C to accomplish this (or >some black magic like LISP). Adam, there is no proposed method to move IP across the zones. Having a native capability in CloudStack to move IP across the zones does not make sense. We will be just assuming CloudStack will have control to many infrastructure components (orchestrate route advertisements etc). Instead what is being proposed is, let the CloudStack raise an event when user moves IP across the zones, then let admin act up on the event and initiate the IP availability from new zone. There is no assumption or proposed method when and how admin to achieve this. Operator can opt for any solution that works in distributed data centre setup. > >My other question revolves around the actual usefulness of EIP across >regions, and whether or not the problem can be solved simply with DNS >changes / global load balancing. DNS/GSLB is a alternative solution that works in active-active setups. But the EIP is suited in active-standby setups. Please see my response to David's question about the usefulness of EIP[1] [1] http://markmail.org/message/eu2hby4gruf67frb > >On Fri, Mar 22, 2013 at 4:34 AM, Murali Reddy <murali.re...@citrix.com> >wrote: >> On 22/03/13 9:37 AM, "Manan Shah" <manan.s...@citrix.com> wrote: >> >>>My assumption is that EIP for VPC should work exactly the same as EIP >>>for >>>Isolated Networks since EIP is like another Public IP except that it can >>>be moved across zones. Also, we do support static NAT in VPC as well as >>>Isolated. So, my thinking is that it might just work with minimal >>>effort. >> >> It might not just work. I can think of questions like, can I move the >>EIP >> across the tiers in VPC? Since cloudStack can not have tier's of VPC in >> multiple zones, question of moving across zones does not arise? Does EIP >> service provider and 'public gateway' need to be same? Does network >>ACL's >> has any impact? Etc. >> >> It would take significant time to think through the scenarios, tweak the >> existing VPC functionality to adapt to EIP, write unit test, marvin >>test. >> Also QA effort for EIP in isolated network won't be same for VPC. >> >>> >>>Regards, >>>Manan Shah >> >> >> > > > >-- >Adam Grochowski ** SunGard Availability Services ** 401 N. Broad >Street - Mezzanine ** Philadelphia, PA 19108 ** 215-446-2679 ** >adam.grochow...@sungard.com >
