[LON-CAPA-admin] Server migration

Guy Albertelli II guy at albertelli.com
Thu Aug 2 11:54:16 EDT 2007

On Thu, Aug 02, 2007 at 04:56:09PM +0200, Stefan Bisitz wrote:
> Guy Albertelli II wrote:
> Date: Wednesday, January 10, 2007 9:04 pm
> > There are three names associated with a machine:
> > 
> > - IP number
> >   - this is effectively not used by anything
> >   - if you change this the only effect you'll see is that while the
> >     DNS changes propagates and possibly up to 24 hours afterwards 
> > other     machines in the network will refuse to talk to your machine
> > - DNS name
> >   - this is used by running processes on machine to know if a machine
> >     is connected to the network
> >   - if you change this we'll need to update the hosts.tab file that
> >     is sent out in a release and other machines will refuse to talk
> >     to your machine until they update to a release with the update
> >     hosts.tab (or they manually integrate the changes into their
> >     hosts.tab)
> > - LONCAPA id 
> >   - this is used by almost all things to talk about lon-capa
> >     information
> >   - if you change this all kinds of things will act oddly (most
> >     important of which being you won't get notidfied of updates to
> >     resources you are subscribed too.)
> > 
> > So in order to have as a seemsless transition is possible don't change
> > any of these, just change what hardware answers to these names.
> Any news for those you want to keep the domain (fhwf) and server
> (fhwfl1), but MUST change the DNS name and the IP address?

As the above says, go ahead but you will need to send the new DNS name
to us so we can get the update out to the rest of the network, and
until everything propagates around you will be unable to contact other
servers in the network.

That said we have attempted to make it so update disperse more quickly
changes that occurred in 2.4.

guy at albertelli.com   0-7-0-9-27,137

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