[Openstack] Cross-zone instance identifiers in EC2 API - Is it worth the effort?

Soren Hansen soren at linux2go.dk
Mon Jul 11 23:51:49 UTC 2011


2011/7/11 Ed Leafe <ed.leafe at rackspace.com>:
>> What happens when you've shared the primary IPv6 address of a VM with another VM? To which VM does the primary key point to? I think overloading the IPv6 address to also mean the primary key is probably a mistake that will cause serious trouble with network-as-a-service portability.
>        When each instance is created, it is assigned a unique IPv6 /96 address. The ::0 is then assigned to the PK for that instance. If you later change the network address of the instance, its PK doesn't change.

That gives you an effective key space of 32 bits. The exact size of
EC2's ID keyspace, which everyone seems so find so limiting.

-- 
Soren Hansen        | http://linux2go.dk/
Ubuntu Developer    | http://www.ubuntu.com/
OpenStack Developer | http://www.openstack.org/




More information about the Openstack mailing list