Re: [Users] so, what do you want next in oVirt?

From: "Itamar Heim" <iheim(a)redhat.com&gt; To: suporte(a)logicworks.pt Cc: users(a)ovirt.org Sent: Monday, September 9, 2013 4:10:58 PM Subject: Re: [Users] so, what do you want next in oVirt? On 09/09/2013 04:09 PM, suporte(a)logicworks.pt wrote: > Hi Doron, > > But first you have to install the engine, before the VM. So, the idea is > to make a backup and restore it to a VM? there is a special flow to create the engine VM. there is a deep dive right now on this.

> > ------------------------------------------------------------------------ > *From: *"Doron Fediuck" <dfediuck(a)redhat.com&gt; > *To: *suporte(a)logicworks.pt > *Cc: *users(a)ovirt.org > *Sent: *Domingo, 8 de Setembro de 2013 23:06:20 > *Subject: *Re: [Users] so, what do you want next in oVirt? > > Hi Jose, > the latter is available by hosted engine, which is a highly > available VM which will be migrated / restarted on a different > host if something goes wrong. > > ----- Original Message ----- > > From: suporte(a)logicworks.pt > > To: users(a)ovirt.org > > Sent: Friday, September 6, 2013 1:43:04 PM > > Subject: Re: [Users] so, what do you want next in oVirt? > > > > Could be great o have on the Engine: > > - An upload option for the ISO files > > - A backup and restore option > > - An high availability for the engine: install the engine on 2 platforms > > (hardware?), than integrate them for synchronization > > > > Jose > > > > > > From: "noc" <noc(a)nieuwland.nl&gt; > > Cc: users(a)ovirt.org > > Sent: Sexta-feira, 6 de Setembro de 2013 10:28:09 > > Subject: Re: [Users] so, what do you want next in oVirt? > > > > On 6-9-2013 10:12, Itamar Heim wrote: > > > On 09/05/2013 10:30 AM, noc wrote: > > >>>> On 08/21/2013 12:11 PM, Itamar Heim wrote: > > >>>>> On 08/21/2013 02:40 AM, Joop van de Wege wrote: > > >>>>>> > > >>>>>> What I would like to see in the ! next version is pxe boot of the > > >>>>>> nodes. > > >>>>>> Probably not easy to achieve because of dependency on dhcp. > > >>>>> > > >>>>> Hi Joop, > > >>>>> > > >>>>> can you please give a bit more information on the use case / > how you > > >>>>> envision this? > > >>>>> > > >>>>> current thinking around bare metal provisioning of hosts is to > extend > > >>>>> the functionality around the foreman provider for this, but you > > >>>>> may > > >>>>> have other suggestions? > > >>>> > > >>>> I think Joop means to be able to add hosts (nodes) to a cluster by > > >>>> adding their MAC address to the dhcp list for PXE boot into > ovirt-node > > >>>> and thus join the cluster. This would make it easy to add new > physical > > >>>> nodes without any spinning disks or other local storage > requirements. > > >>> > > >>> we started adding foreman integration in 3.3: > > >>> http://www.ovirt.org/Features/ForemanIntegration > > >>> > > >>> adding ohad and oved for their thoughts on this. > > >>> > > >>>> > > >>>> I suppose this may not be easy with complex network connections > (bonds > > >>>> on mgmt network, mgmt network on a tagged vlan, etc), but it > should be > > >>>> possible if the management network interface is plain and physical. > > >>>> > > >>>> /Simon > > >>>> > > >>>> PS, Perhaps Joop can confirm this idea, we've talked about it IRL. > > >>>> _______________________________________________ > > >>>> Users mailing list > > >>>> Users(a)ovirt.org > > >>>> http://lists.ovirt.org/mailman/listinfo/users > > >>> > > >> This isn't about provisioning with Foreman. Its about having the > compute > > >> nodes NOT having any spinning disks. So the only way to start a > node is > > >> to pxeboot it and then let it (re)connect with the engine. Then it > will > > >> be identified by engine as either a new node or a reconnecting > node and > > >> it will get its configuration from the engine. For reference: > thats how > > >> VirtualIron works. It has a managment network, just like ovirt, and > > >> on > > >> that it runs a tftp and dhcp server. Nodes are plugged into the > > >> managment network, without disk, and then pxe booted after which they > > >> appear in the webui as new unconfigured nodes. You then can set > various > > >> settings and upon rebooting the nodes will recieve these settings > > >> because it is recognised by its mac address. The advantage of this > > >> construct is that you can place a new server into a rack, cable it, > > >> power on and go back to you office where you'll find the new node > > >> waiting to be configured. No messing around with CDs to install an > > >> OS, > > >> not being in the datacenter for hours on end, just in and out. > > >> > > >> Yes, disks are cheap but they brake down, need maintenance, means > > >> downtime and in general more admin time then when you don't have > them. ( > > >> its a shame to have a raid1 of 2 1Tb disk just to install an OS of > less > > >> then 10G) > > > > > > just wondering, how do they prevent a rogue node/guest from > > > masquerading as such a host, getting access/secrets/VMs to be launched > > > on such an untrusted node (they could easily report a different mac > > > address if the layer 2 isn't hardened against that)? > > > > > They would need physical access to your rack which ofcourse is locked, > > you would need to powerdown/up which would trigger an alert, switch port > > down/up would trigger an alert, so probably you're notified that > > something not quite right is happening. I haven't gone through the > > source to see if there is more then just the mac address check. > > > > > other than that, yes. we actually used to have this via the > > > AutoApprovePatterns config option, which would have the engine approve > > > a pending node as it registers (I admit i don't think anyone used this > > > last several years, and it may be totally broken by now). > > > > > > please note this doesn't solve the need for a disk, just the > > > auto-registration part (if it still works) > > What I would like is to have the ovirt Node pxe booting and getting its > > config from engine or autoregister. I know there is a script which > > converts the iso into a huge pxeboot kernel but don't know how to solve > > or if its solved the config part. > > > > @karli: > > If you run your cluster in Memory Optimization=None then you won't need > > swap. Have been doing that for years and haven't had a single problem > > attributed to that. I just would like to have the choice, pxe boot the > > node and know that you don't have swap. Run with disks if you really > > need overprovisioning. > > > > Regards, > > > > Joop > > > > _______________________________________________ > > Users mailing list > > Users(a)ovirt.org > > http://lists.ovirt.org/mailman/listinfo/users > > > > > > _______________________________________________ > > Users mailing list > > Users(a)ovirt.org > > http://lists.ovirt.org/mailman/listinfo/users > > > > > > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users