openstack team mailing list archive

[Vishvananda Ishaya <vishvananda@xxxxxxxxx>]

you can also start the services on the new host with --host=<hostname> and they will basically pretend that they have the hostname that you specify.

Vish

On Jul 22, 2011, at 6:15 PM, Leandro Reox wrote:

> yes i already tried that and works. but i was thinking in a schema where al nodes have the network and scheduler services installed and i can switch them via custom heartbeat resource. Everything worked but that. Maybe i can update the contoller hostname on switch.
> 
> using a vip like dns entry and pointing that on the nova conf will change that behavior or.the controller will still resolving via hostname ?
> 
> guess not
> 
> regards
> 
> On Jul 22, 2011 7:52 PM, "Vishvananda Ishaya" <vishvananda@xxxxxxxxx> wrote:
> > Generally the easiest is to give the new machine the same hostname.
> > 
> > You can also update the references to the host in the db:
> > 
> > update networks set host=newhostname where host=oldhostname
> > 
> > Vish
> > 
> > On Jul 22, 2011, at 12:39 PM, Leandro Reox wrote:
> > 
> >> Hi all, 
> >> 
> >> Being working on controller/network node HA for a time know, but at this point im having an issue that maybe someone has faced before . 
> >> When i switch the controller to an "spare" one, the computes nodes still searching for "network.$oldcontrollerhostname" . Is there a place where the hostname on the controller is stored ? maybe a field on the database ? . The instances stucks in "networking" status
> >> 
> >> The entry on the nova-compute.log from the compute that is trying to spawn the instance is clear : 
> >> 
> >> DEBUG nova.rpc [-] Making asynchronous call on network.controller1 ... from (pid=4440) call /usr/lib/pymodules/python2.6/nova/rpc.py:350
> >> 
> >> Where "controller1" is the OLD controller/network node 
> >> 
> >> Any clues ?
> >> 
> >> Regards
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