Re: [ovirt-users] Hosted Engine won't start, how to debug?

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(a)ingenit.com&gt; 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(a)ingenit.com&gt; 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-v... >>>> >>>> Best regards >>>> >>>> -- >>>> Martin Sivak >>>> SLA / oVirt >>>> >>>> On Fri, Apr 13, 2018 at 11:26 AM, Thomas Klute <klute(a)ingenit.com&gt; 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(a)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(a)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(a)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(a)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 > ________________________________________________________________________ >