Dear Martin, a follow up question regarding this case: we managed to get the hosted engine up and running again, but we'd like to permanently add the missing graphics device to the vm.conf (instead of starting with the vm-custom.conf in case of trouble). How do I add this line to the vm.conf config file (it seems to be overwritten after a few seconds - I suppose it's copied from somewhere?) Thanks, Thomas
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.
Best regards
Martin Sivak
On Fri, Apr 13, 2018 at 5:13 PM, Thomas Klute <klute@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@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-b...
Best regards
-- Martin Sivak SLA / oVirt
On Fri, Apr 13, 2018 at 11:26 AM, Thomas Klute <klute@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@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@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@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@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@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 ________________________________________________________________________