[ovirt-users] Change network of ovirt-nodes of a self-hosted engine cluster
Good day! I'm in position when I have to change network settings of three ovirt-nodes that comprise my cluster with hosted engine. Am I correct that to change network is not a big deal and it is possible? My plan was: 1. shutdown all vms (except engine itself) on all nodes. 2. enable maintenance mode on all nodes, except the one with running engine 3. change network settings in engine node 4. shut engine down with hosted-engine --vm-stop 5. change network settings on all nodes, verify that nodes can ping each other 6. start engine with hosted-engine --vm-start 7. change VLAN tag at Logical Network for VMs 8. activate nodes 9. start vms Does it make sense? -- С уважением, Костырев Александр, системный администратор ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] ovirt 3.5 self-hosted engine and ovirtmgmt not syncronised
Donny Davis писал 2015-01-23 18:07:
You have to move the hosted engine to another host to sync the
networks, they cannot be synced while the host is running vm's. Bring
your second hosted engine machine online so the engine can be
migrated, and the host in which you want to sync the network can be
synced.
I only know from experience, and one of the ovirt devs may have a
better solution. This is what worked for me.
Hmmm...
I was able to sync ovirtmgmt network on two hosts out of three but now I
have a problem starting engine up on those two nodes
Jan 23 20:23:23 ovirt-3 vdsm vm.Vm ERROR
vmId=`e3c64c89-65e0-4936-83af-de201130e789`::The vm start process
failed#012Traceback (most recent call last):#012 File
/usr/share/vdsm/virt/vm.py, line 2264, in _startUnderlyingVm#012
self._run()#012 File /usr/share/vdsm/virt/vm.py, line 3328, in
_run#012self._connection.createXML(domxml, flags),#012 File
/usr/lib/python2.6/site-packages/vdsm/libvirtconnection.py, line 111,
in wrapper#012ret = f(*args, **kwargs)#012 File
/usr/lib64/python2.6/site-packages/libvirt.py, line 2709, in
createXML#012if ret is None:raise libvirtError('virDomainCreateXML()
failed', conn=self)#012libvirtError: Cannot get interface MTU on
'ovirtmgmt': No such device
as I mentioned earlier file
/etc/sysconfig/network-scripts/ifcfg-ovirtmgmt gets removed from those
two nodes after syncing.
How can I recreated that ifcfg-ovirtmgmt file?
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[ovirt-users] ovirt 3.5 self-hosted engine and ovirtmgmt not syncronised
Hello! I'm testing ovirt-3.5 with self-hosted engine. Today I've noticed that in Setup Host Networks screen of every host I have ovirtmgmt Not syncronised. If I click Save network no errors occur but when I issue ifconfig on that node I see no ovirtmgmt interface - it gets removed. but virsh -r net-list Name State Autostart Persistent -- ;vdsmdummy; active nono vdsm-ovirtmgmt active yes yes vdsm-VMs active yes yes -- С уважением, Костырев Александр, системный администратор, www.tutu.ru skype a.kostyrev Тел. +7(925) 237-7668 ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
[ovirt-users] ovirt 3.5 and power outages
good day, everybody! I've got three node cluster with power management enabled. As far as I understood to restart vms on the other host in the cluster in case when host suffered from power outage the engine has to be able to connect to host (specifically to vdsm) to be sure that host has been rebooted and it's not running any vms. But what if I'm running a lot of vms on the host and it's 3 o'clock in the morning and 1) engine has rebooted the host but the host cannot boot because of some hardware problem or new kernel gives a kernel panic? 2) the host's motherboard burned out and it cannot get booted so the engine will never connect to host and therefore all the vms that were running on that host won't migrate to other node in the cluster. So my cluster in that case is useless 'cause I'm not there to press confirm host has been rebooted'. -- С уважением, Костырев Александр, системный администратор ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
