[ovirt-users] Hosted Engine won't start, how to debug?
Simone Tiraboschi
stirabos at redhat.com
Mon Apr 16 08:04:03 UTC 2018
On Sat, Apr 14, 2018 at 1:47 PM, Martin Sivak <msivak at redhat.com> wrote:
> Hi,
>
> the vnc device is there by default (I copied it out of my own hosted
> engine instance), I do not know why it was missing in your case.
>
graphical_console parameter has been introduced in ovirt_vms ansible module
just since ansible 2.5.
http://docs.ansible.com/ansible/latest/modules/ovirt_vms_module.html#ovirt-vms
Anso so we have to consume it as well.
I just opened https://bugzilla.redhat.com/show_bug.cgi?id=1567772
to track it.
> Best regards
>
> Martin Sivak
>
> On Fri, Apr 13, 2018 at 5:13 PM, Thomas Klute <klute at ingenit.com> wrote:
> > Dear Martin,
> >
> > yes, that worked. Thank you so much!!
> > We were able to see that the latest kernel update failed and did not
> > create the initramfs file and thus the boot process failed with a kernel
> > panic.
> >
> > Debugging this problem took us many hours... It felt so complicated to
> > connect a vnc to this vm - compared to a bare metal setup with display
> > and keyboard.
> > Wouldn't it be a good idea to have the vnc device in the config by
> default?
> >
> > Best regards,
> > Thomas
> >
> >> You need to be in global maintenance, but I think you already know that.
> >> Then try updating the vm.conf like you already did and add this line:
> >>
> >> devices={device:vnc,type:graphics,deviceId:f1d0394e-
> b077-4ea6-99e5-b9b6b8fe073c,address:None}
> >>
> >> Then restart the VM using hosted-engine commands and try the VNC
> approach again.
> >>
> >> Best regards
> >>
> >> Martin Sivak
> >>
> >> On Fri, Apr 13, 2018 at 2:35 PM, Thomas Klute <klute at ingenit.com>
> wrote:
> >>> Dear Martin,
> >>>
> >>> thanks for the feedback.
> >>> We already read this and tried it.
> >>> It seems to me that the graphics device was removed from the hosted
> >>> engine by some ovirt release.
> >>>
> >>> If I try to set a console password I see this message:
> >>>
> >>> hosted-engine --add-console-password
> >>> Enter password:
> >>> no graphics devices configured
> >>>
> >>> Furthermore, there is nothing listening on port 5900 after that.
> >>> The HostedEngine qemu process shows a " -display none " as parameter
> and
> >>> I have no idea where this can be changed.
> >>>
> >>> I already created a /var/run/ovirt-hosted-engine-ha/vm-custom.conf
> >>> containing:
> >>> display=vnc
> >>> kvmEnable=true
> >>>
> >>> But nothing changed.
> >>> I also edited the HostedEngine VM config using virsh and added a vnc
> >>> display:
> >>> /usr/bin/virsh -c
> >>> qemu:///system?authfile=/etc/ovirt-hosted-engine/virsh_auth.conf edit
> >>> HostedEngine
> >>>
> >>> <graphics type='vnc' port='12355' autoport='no' listen='0.0.0.0'>
> >>> <listen type='address' address='0.0.0.0'/>
> >>> </graphics>
> >>> <video>
> >>> <model type='qxl' ram='65536' vram='65536' vgamem='16384'
> >>> heads='1' primary='yes'/>
> >>> <address type='pci' domain='0x0000' bus='0x00' slot='0x07'
> >>> function='0x0'/>
> >>> </video>
> >>>
> >>> But there is still "display none" passed as command line parameter to
> >>> qemu and thus, I suppose, there's no display.
> >>>
> >>> Any help is appreciated, thanks,
> >>> Thomas
> >>>
> >>>
> >>>> Hi,
> >>>>
> >>>> the serial console will show output if the kernel knows to use it.
> >>>>
> >>>> The VNC approach is also possible and I believe we already have a
> >>>> graphical device present. What you are looking for is probably this
> >>>> (VNC method is described there):
> >>>> https://www.ovirt.org/documentation/how-to/hosted-
> engine/#handle-engine-vm-boot-problems
> >>>>
> >>>> Best regards
> >>>>
> >>>> --
> >>>> Martin Sivak
> >>>> SLA / oVirt
> >>>>
> >>>> On Fri, Apr 13, 2018 at 11:26 AM, Thomas Klute <klute at ingenit.com>
> wrote:
> >>>>> Dear oVirt Team,
> >>>>>
> >>>>> after trying to reboot a hosted engine setup on oVirt 4.2 the VM
> won't
> >>>>> come up anymore.
> >>>>> The qemu-kvm process is there but we're unable to access the VM using
> >>>>> - the serial console (simply does not show anything, does not react
> to
> >>>>> characters typed)
> >>>>> - VNC / Spice because the hosted engine vm.conf does not contain any
> >>>>> graphics device.
> >>>>>
> >>>>> Before trying to reinstall, we'd like to recover and debug what is
> going on.
> >>>>> We mounted a Centos7 install .iso and started the VM using
> >>>>> hosted-engine --vm-start
> >>>>> --vm-conf=/var/run/ovirt-hosted-engine-ha/vm-custom.conf
> >>>>> But we still have to problem, that the serial console does not show
> >>>>> anything and there is no way to connect using VNC.
> >>>>>
> >>>>> So, what is the recommended way to move forward in such situation?
> >>>>> IMHO the classical way would be to add a graphics device and connect
> via
> >>>>> VNC?
> >>>>> I did not use the serial console much, up to now. Should the serial
> >>>>> console show any output during boot?
> >>>>>
> >>>>> Thanks for your help,
> >>>>> Thomas
> >>>>>
> >>>>> --
> >>>>> ____________________________________________________________
> ____________
> >>>>>
> >>>>> Dipl.-Inform. Thomas Klute
> klute at ingenit.com
> >>>>> Geschäftsführer / CEO
> >>>>> ------------------------------------------------------------
> ----------
> >>>>> ingenit GmbH & Co. KG Tel. +49 (0)231 58
> 698-120
> >>>>> Emil-Figge-Strasse 76-80 Fax. +49 (0)231 58
> 698-121
> >>>>> D-44227 Dortmund
> www.ingenit.com
> >>>>>
> >>>>> Registergericht: Amtsgericht Dortmund, HRA 13 914
> >>>>> Gesellschafter : Thomas Klute, Marc-Christian Schröer
> >>>>> ____________________________________________________________
> ____________
> >>>>>
> >>>>> _______________________________________________
> >>>>> Users mailing list
> >>>>> Users at ovirt.org
> >>>>> http://lists.ovirt.org/mailman/listinfo/users
> >>> Sollten noch Fragen offen sein, stehen wir Ihnen natürlich jederzeit
> >>> gerne zur Verfügung.
> >>>
> >>> Mit Grüßen aus Dortmund,
> >>> Thomas Klute
> >>>
> >>> --
> >>> ____________________________________________________________
> ____________
> >>>
> >>> Dipl.-Inform. Thomas Klute
> klute at ingenit.com
> >>> Geschäftsführer / CEO
> >>> ------------------------------------------------------------
> ----------
> >>> ingenit GmbH & Co. KG Tel. +49 (0)231 58 698-120
> >>> Emil-Figge-Strasse 76-80 Fax. +49 (0)231 58 698-121
> >>> D-44227 Dortmund
> www.ingenit.com
> >>>
> >>> Registergericht: Amtsgericht Dortmund, HRA 13 914
> >>> Gesellschafter : Thomas Klute, Marc-Christian Schröer
> >>> ____________________________________________________________
> ____________
> >>>
> >>
> >
> > Sollten noch Fragen offen sein, stehen wir Ihnen natürlich jederzeit
> > gerne zur Verfügung.
> >
> > Mit Grüßen aus Dortmund,
> > Thomas Klute
> >
> > --
> > ________________________________________________________________________
> >
> > Dipl.-Inform. Thomas Klute klute at ingenit.com
> > Geschäftsführer / CEO
> > ----------------------------------------------------------------------
> > ingenit GmbH & Co. KG Tel. +49 (0)231 58 698-120
> > Emil-Figge-Strasse 76-80 Fax. +49 (0)231 58 698-121
> > D-44227 Dortmund www.ingenit.com
> >
> > Registergericht: Amtsgericht Dortmund, HRA 13 914
> > Gesellschafter : Thomas Klute, Marc-Christian Schröer
> > ________________________________________________________________________
> >
> _______________________________________________
> Users mailing list
> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
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