Re: [openstack-dev] [Openstack][TripleO] What if undercloud machines down, can we reboot overcloud machines?

So I think the thing to keep in mind here is that your overcloud nodes are OpenStack _instances_ in TripleO. Would you would expect to start a VM in Nova, shut off all of the OpenStack services, and still be able to reboot that VM successfully? Maybe if you had static networking, but I highly dou

Re: [openstack-dev] [Openstack][TripleO] What if undercloud machines down, can we reboot overcloud machines?

It is not a big worry but it would have been better if overcloud nodes to be independent of undercloud except being a manager. Think the use case where: 1. nova has three region, geographically apart 2. geographical area hosting undercloud gets doomed 3. all region of nova gets affected as they ca

Re: [openstack-dev] [Openstack][TripleO] What if undercloud machines down, can we reboot overcloud machines?

That is correct, we intend that the undercloud should be designed with HA in mind. In terms of the design of TripleO, the devtest.sh implementation aims to have this available as a default (see http://docs.openstack.org/developer/tripleo-incubator/README.html#stage-2-being-worked-on for some dated

Re: [openstack-dev] [Openstack][TripleO] What if undercloud machines down, can we reboot overcloud machines?

I do agree but it create an extra requirement for Undercloud if we high availability is important criteria. Because of this, undercloud has to be there 24x7, 365 days and to make it available we need to have HA for this also. So, you indirectly mean that undercloud also should be designed keeping h

Re: [openstack-dev] [Openstack][TripleO] What if undercloud machines down, can we reboot overcloud machines?

We probably will at some point, but I don't know that it's a huge priority right now. The PXE booting method works fine, and as I mentioned we don't intend you to reboot machines without using the undercloud anyway, just like Nova doesn't expect you to reboot vms directly via libvirt (or your driv

Re: [openstack-dev] [Openstack][TripleO] What if undercloud machines down, can we reboot overcloud machines?

I believe that local boot option is available in Ironic. Will not be a good idea to boot from local disk instead of relying on PXE boot always? Curious to know why we are not going this path? On Wed, Aug 27, 2014 at 3:54 AM, 严超 wrote: > Thank you very much. > And sorry for the cross-posting. >

Re: [openstack-dev] [Openstack][TripleO] What if undercloud machines down, can we reboot overcloud machines?

Thank you very much. And sorry for the cross-posting. *Best Regards！* *Chao Yan--**My twitter：Andy Yan @yanchao727 * *My Weibo：http://weibo.com/herewearenow --* 2014-08-26 23:17 GMT+08:00 Ben Nemec : > Oh

Re: [openstack-dev] [Openstack][TripleO] What if undercloud machines down, can we reboot overcloud machines?

Oh, after writing my response below I realized this is cross-posted between openstack and openstack-dev. Please don't do that. I suppose this probably belongs on the users list, but since I've already written the response I guess I'm not going to argue too much. :-) On 08/26/2014 07:36 AM, 严超 wr