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Self Hosted Engine a single Bare Metal Server
by LS CHENG 19 Nov '20

19 Nov '20

Hi We are planning to set up a single ovirt node for testing. It is a single Bare Metal Server. I wonder if there is any problem setting up a Self Hosted Engine in this Bare Metal (there is no HA but we don't need it in this case)? I know it is probably not the best practice but it is for training and testing purposes. Thank you

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Fix corrupt self-hosted engine
by Alex K 19 Nov '20

19 Nov '20

Hi all, I have a corrupt self-hosted engine (with several file system errors, postgres not able to start) and thus it does not give access to the web UI. This happened following an unlucky split brain resolution (I am running 2 nodes). The two hosts are running VMs also which I would like to keep running as they are needed. When trying to boot into rescue mode (using systemd.unit=emergency.target boot parameter) I get a cursor and nothing else. I have backups of engine files with scope all (using the engine-backup tool). What is the best approach to try and fix the engine or redeploy. Thanks for any help. Alex

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Re: oVirt Node Crash
by Anton Louw 19 Nov '20

19 Nov '20

Hi Sandro, Have you perhaps seen anything in the SOS report that could shed some light on the issues? Thanks Anton Louw Cloud Engineer: Storage and Virtualization ______________________________________ D: 087 805 1572 | M: N/A A: Rutherford Estate, 1 Scott Street, Waverley, Johannesburg anton.louw(a)voxtelecom.co.za www.vox.co.za From: Anton Louw Sent: 16 November 2020 07:30 To: Sandro Bonazzola <sbonazzo(a)redhat.com>; Arik Hadas <ahadas(a)redhat.com>; Dominik Holler <dholler(a)redhat.com> Cc: users(a)ovirt.org; Johan Koen <Johan.Koen(a)voxtelecom.co.za> Subject: RE: [ovirt-users] oVirt Node Crash I have also attached the SOS report as requested From: Anton Louw Sent: 16 November 2020 06:54 To: Sandro Bonazzola <sbonazzo(a)redhat.com<mailto:sbonazzo@redhat.com>>; Arik Hadas <ahadas(a)redhat.com<mailto:ahadas@redhat.com>>; Dominik Holler <dholler(a)redhat.com<mailto:dholler@redhat.com>> Cc: users(a)ovirt.org<mailto:users@ovirt.org>; Johan Koen <Johan.Koen(a)voxtelecom.co.za<mailto:Johan.Koen@voxtelecom.co.za>> Subject: RE: [ovirt-users] oVirt Node Crash Hi Sandro, Thanks for the response. I logged onto oVirt this morning, and I see the node is in a “Unassigned” state. I can ping it, but cannot SSH, so there is something that is causing the host to be unresponsive. On Saturday after I sent the mail, I opened a console to the node, and I saw the below entries before logging in: audit:backlog limit exceeded I the tried the solution of increasing the buffer size in the audit.rules file in /etc/audit/rules.d/ , as per below, but it did not resolve the issue. ## First rule - delete all -D ## Increase the buffers to survive stress events. ## Make this bigger for busy systems -b 8192 ## Set failure mode to syslog -f 1 Is it possible to upgrade the node to 4.4 while the engine is still on 4.3? Thanks From: Sandro Bonazzola <sbonazzo(a)redhat.com<mailto:sbonazzo@redhat.com>> Sent: 13 November 2020 18:39 To: Anton Louw <Anton.Louw(a)voxtelecom.co.za<mailto:Anton.Louw@voxtelecom.co.za>>; Arik Hadas <ahadas(a)redhat.com<mailto:ahadas@redhat.com>>; Dominik Holler <dholler(a)redhat.com<mailto:dholler@redhat.com>> Cc: users(a)ovirt.org<mailto:users@ovirt.org>; Johan Koen <Johan.Koen(a)voxtelecom.co.za<mailto:Johan.Koen@voxtelecom.co.za>> Subject: Re: [ovirt-users] oVirt Node Crash Il giorno ven 13 nov 2020 alle ore 17:37 Sandro Bonazzola <sbonazzo(a)redhat.com<mailto:sbonazzo@redhat.com>> ha scritto: Il giorno ven 13 nov 2020 alle ore 13:38 Anton Louw via Users <users(a)ovirt.org<mailto:users@ovirt.org>> ha scritto: Hi Everybody, I have built a new host which has been running fine for the last couple of days. I noticed today that the host crashed, but it is not giving me a reason as to why. It happened at 13:45 today, but I have given time before that on the logs as well. Is there something I am missing here? Not related to the crash, but I see in the logs that 5 out of 20 guests have qemu guest agent not responding. Also you seem to have some issues with some firewalld rules. (Maybe +Dominik Holler<mailto:dholler@redhat.com> would like to have a look) I don't see anything explaining why the host got rebooted. Still related to guest agent I find a bit alarming the following lines: Nov 13 13:29:34 jb2-node03 libvirtd: 2020-11-13 11:29:34.294+0000: 12603: error : qemuDomainAgentAvailable:9144 : Guest agent is not responding: QEMU guest agent is not connected Nov 13 13:29:34 jb2-node03 vdsm[13843]: ERROR Shutdown by QEMU Guest Agent failed#012Traceback (most recent call last):#012 File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 5304, in qemuGuestAgentShutdown#012 self._dom.shutdownFlags(libvirt.VIR_DOMAIN_SHUTDOWN_GUEST_AGENT)#012 File "/usr/lib/python2.7/site-packages/vdsm/virt/virdomain.py", line 100, in f#012 ret = attr(*args, **kwargs)#012 File "/usr/lib/python2.7/site-packages/vdsm/common/libvirtconnection.py", line 131, in wrapper#012 ret = f(*args, **kwargs)#012 File "/usr/lib/python2.7/site-packages/vdsm/common/function.py", line 94, in wrapper#012 return func(inst, *args, **kwargs)#012 File "/usr/lib64/python2.7/site-packages/libvirt.py", line 2517, in shutdownFlags#012 if ret == -1: raise libvirtError ('virDomainShutdownFlags() failed', dom=self)#012libvirtError: Guest agent is not responding: QEMU guest agent is not connected Nov 13 13:29:42 jb2-node03 kernel: vlan0077: port 11(vnet15) entered disabled state Nov 13 13:29:42 jb2-node03 kernel: device vnet15 left promiscuous mode Nov 13 13:29:42 jb2-node03 kernel: vlan0077: port 11(vnet15) entered disabled state Nov 13 13:29:42 jb2-node03 NetworkManager[6027]: <info> [1605266982.6539] device (vnet15): state change: disconnected -> unmanaged (reason 'unmanaged', sys-iface-state: 'removed') Nov 13 13:29:42 jb2-node03 NetworkManager[6027]: <info> [1605266982.6550] device (vnet15): released from master device vlan0077 Nov 13 13:29:42 jb2-node03 libvirtd: 2020-11-13 11:29:42.669+0000: 12557: error : qemuMonitorIO:718 : internal error: End of file from qemu monitor +Arik Hadas<mailto:ahadas@redhat.com> any clue? About the crash, can you please provide full sos report from the host? the log you provided is not enough to understand what caused the reported crash Also, given python2 is used here, I assume you're on 4.3 or older. I would recommend to upgrade to 4.4 as soon as practical. Thanks Anton Louw Cloud Engineer: Storage and Virtualization at Vox ________________________________ T: 087 805 0000 | D: 087 805 1572 M: N/A E: anton.louw(a)voxtelecom.co.za<mailto:anton.louw@voxtelecom.co.za> A: Rutherford Estate, 1 Scott Street, Waverley, Johannesburg www.vox.co.za<http://www.vox.co.za> [F]<https://www.facebook.com/voxtelecomZA> [T]<https://www.twitter.com/voxtelecom> [I]<https://www.instagram.com/voxtelecomza/> [L]<https://www.linkedin.com/company/voxtelecom> [Y]<https://www.youtube.com/user/VoxTelecom> [#VoxBrand]<https://www.vox.co.za/fibre/fibre-to-the-home/?prod=HOME> Disclaimer The contents of this email are confidential to the sender and the intended recipient. Unless the contents are clearly and entirely of a personal nature, they are subject to copyright in favour of the holding company of the Vox group of companies. Any recipient who receives this email in error should immediately report the error to the sender and permanently delete this email from all storage devices. This email has been scanned for viruses and malware, and may have been automatically archived by Mimecast Ltd, an innovator in Software as a Service (SaaS) for business. Providing a safer and more useful place for your human generated data. Specializing in; Security, archiving and compliance. To find out more Click Here<https://www.voxtelecom.co.za/security/mimecast/?prod=Enterprise>. _______________________________________________ Users mailing list -- users(a)ovirt.org<mailto:users@ovirt.org> To unsubscribe send an email to users-leave(a)ovirt.org<mailto:users-leave@ovirt.org> Privacy Statement: https://www.ovirt.org/privacy-policy.html<https://www.ovirt.org/privacy-policy.html> oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/<https://www.ovirt.org/community/about/community-guidelines/> List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/XMRUDMRBYZKUJ…<https://lists.ovirt.org/archives/list/users@ovirt.org/message/XMRUDMRBYZKUJ…> -- Sandro Bonazzola MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV Red Hat EMEA<https://www.redhat.com/> sbonazzo(a)redhat.com<mailto:sbonazzo@redhat.com> [https://static.redhat.com/libs/redhat/brand-assets/2/corp/logo--200.png]<https://www.redhat.com/> Red Hat respects your work life balance. Therefore there is no need to answer this email out of your office hours. <https://mojo.redhat.com/docs/DOC-1199578> -- Sandro Bonazzola MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV Red Hat EMEA<https://www.redhat.com/> sbonazzo(a)redhat.com<mailto:sbonazzo@redhat.com> [https://static.redhat.com/libs/redhat/brand-assets/2/corp/logo--200.png]<https://www.redhat.com/> Red Hat respects your work life balance. Therefore there is no need to answer this email out of your office hours. <https://mojo.redhat.com/docs/DOC-1199578>

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How to create a backup in event of hardware failure of a single hosted engine?
by ernestclydeachua＠gmail.com 18 Nov '20

18 Nov '20

Hello everyone, Currently we have a single bare metal that hosts oVirt and glusterFS which later on to be converted to a 3 nodes for HCI, currently another bare metal is coming this week and was planning to initially create it as a backup. is it possible to deploy a new hosted engine then create a gluster volume for 1st one as a backup domain then attach it to the new one if hardware failure occurred, or there is another kind of setup that can be done?

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Migration VM
by tiziano.pacioni＠par-tec.it 18 Nov '20

18 Nov '20

Hi, I installed a new server, using the ovirt iso, with the target of migrating the VMs coming from another cluster, contained on another ovirt node. I tried to migrate a vm using the Export Domain, once imported on the new node, i see the vm from web dashboard but, from command line “virsh list --all” is absent, the imported vm does not appear in the list. Also if I try to start it, I get the following error: VM X is down with error. Exit message: unsupported configuration: bus must be 0 for ide controller. Can you help me?

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Re: Hosted Engine can't migrate
by Strahil Nikolov 18 Nov '20

18 Nov '20

Hi Bradley, usually this is not supposed to happen. I can propose you a fast fix: - Set a node into maintenance (via the UI) and then from the "Installation" drop down menu (upper right) click "reinstall" There is a tab for the HostedEngine and you have to mark it as deployed/installed If it doesn't work,ssh to one of the hosts and provide the output of: hosted-engine --vm-status Best Regards В сряда, 18 ноември 2020 г., 08:08:36 Гринуич+2, McNamara, Bradley <bradley.mcnamara(a)seattle.gov> написа: I'm new to oVirt, but not new to virtualization technologies. I've run into a wall, but the solution has gotta be simple. I've seen other threads with the same issue, but a solution is never posted. I've followed the guide perfectly. I get the self-hosted engine up and running with no issues. I add hosts to the cluster, but it won't let me migrate the HE because of Hosted Engine HA score of "N/A" on every host except the one it was initially deployed on. The physical servers are exactly the same: same networks, storage, OS, patches, etc. The additional hosts are added thru the HE GUI and are added without issue. Is there a secret button I gotta push? What am I missing? This is with 4.3 on CentOS 7.9. HELP! Thanks. :-) _______________________________________________ Users mailing list -- users(a)ovirt.org To unsubscribe send an email to users-leave(a)ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/TKNPG3TRZGZIU…

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Re: Hosted Engine can't migrate
by Gianluca Cecchi 18 Nov '20

18 Nov '20

On Wed, Nov 18, 2020 at 7:08 AM McNamara, Bradley < Bradley.McNamara(a)seattle.gov> wrote: > I'm new to oVirt, but not new to virtualization technologies. I've run > into a wall, but the solution has gotta be simple. I've seen other threads > with the same issue, but a solution is never posted. > > I've followed the guide perfectly. I get the self-hosted engine up and > running with no issues. I add hosts to the cluster, but it won't let me > migrate the HE because of Hosted Engine HA score of "N/A" on every host > except the one it was initially deployed on. The physical servers are > exactly the same: same networks, storage, OS, patches, etc. The > additional hosts are added thru the HE GUI and are added without issue. Is > there a secret button I gotta push? > > What am I missing? This is with 4.3 on CentOS 7.9. > > HELP! Thanks. :-) > If you go in Compute --> Hosts in web admin gui, do the added hosts have a crown icon on the left of their "Name" column? If not, when you added them possibly you overlooked the "Hosted Engine" section in the window, where by default, if I'm not wrong, the value is "None": that means that the added host doesn't contributed to be one of the "Hosted Engine" ones electable to host the engine VM, but only an hyoervisor. Long time ago I opened two bugzillas about this default with some notes for improving a better experience.... If this is the case, you can remove the hosts one by one and add them again selecting "Deploy" in the Hosted Engine section, for how many you would like to contribute to the score and to be able to host the hosted engine VM. HIH, Gianluca

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Re: Hosted Engine can't migrate
by Yedidyah Bar David 18 Nov '20

18 Nov '20

Hi, On Wed, Nov 18, 2020 at 8:08 AM McNamara, Bradley <Bradley.McNamara(a)seattle.gov> wrote: > > I'm new to oVirt, but not new to virtualization technologies. I've run into a wall, but the solution has gotta be simple. I've seen other threads with the same issue, but a solution is never posted. > > I've followed the guide perfectly. I get the self-hosted engine up and running with no issues. I add hosts to the cluster, but it won't let me migrate the HE because of Hosted Engine HA score of "N/A" on every host except the one it was initially deployed on. The physical servers are exactly the same: same networks, storage, OS, patches, etc. The additional hosts are added thru the HE GUI and are added without issue. Is there a secret button I gotta push? > > What am I missing? This is with 4.3 on CentOS 7.9. Can other VMs migrate (who use the same storage server, so you know it's not a storage/network issue)? Please check/share /var/log/ovirt-hosted-engine-ha/* on all hosts, as well as output of 'hosted-engine --vm-status' on all of them. Good luck and best regards, -- Didi

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Hosted Engine can't migrate
by McNamara, Bradley 18 Nov '20

18 Nov '20

I'm new to oVirt, but not new to virtualization technologies. I've run into a wall, but the solution has gotta be simple. I've seen other threads with the same issue, but a solution is never posted. I've followed the guide perfectly. I get the self-hosted engine up and running with no issues. I add hosts to the cluster, but it won't let me migrate the HE because of Hosted Engine HA score of "N/A" on every host except the one it was initially deployed on. The physical servers are exactly the same: same networks, storage, OS, patches, etc. The additional hosts are added thru the HE GUI and are added without issue. Is there a secret button I gotta push? What am I missing? This is with 4.3 on CentOS 7.9. HELP! Thanks. :-)

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Upgrading engine from 4.3 -> 4.4
by David Metcalf 17 Nov '20

17 Nov '20

Followed this for standalone hosts: https://ovirt.org/documentation/upgrade_guide/#Upgrading_from_4-3 but get this message.. engine-backup --mode=restore --file=engine-backup-2020-11-16.bak --provision-all-databases ... FATAL: Backup was created by version '4.3.9.4' and can not be restored using the installed version 4.4.3.11

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