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Re: oVirt 4.3 ssh passwordless setup guide
by Strahil Nikolov 24 Jul '20

24 Jul '20

You need to keep the ssh root access from the engine , so you will need a 'Match' stanza for the engine. Of course testing is very important, but in case you got no test setup - you can set a node in maintenance and experiment a little bit. Best Regards, Strahil Nikolov На 23 юли 2020 г. 21:29:06 GMT+03:00, "Morris, Roy" <roy.morris(a)ventura.org> написа: >Hello, > >Does anyone have a guide or how to on setting up oVirt with >passwordless ssh setup? I want to do this with a production environment >to improve security but I have never done this before and want to build >a test environment to try it out. > >Best regards, >Roy Morris

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oVirt 4.3 ssh passwordless setup guide
by Morris, Roy 23 Jul '20

23 Jul '20

Hello, Does anyone have a guide or how to on setting up oVirt with passwordless ssh setup? I want to do this with a production environment to improve security but I have never done this before and want to build a test environment to try it out. Best regards, Roy Morris

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Upgrade from 4.3 to 4.4 fails with db or user ovirt_engine_history already exists
by wilderink＠triplon.nl 23 Jul '20

23 Jul '20

Currently, our upgrade to 4.4 fails with error: FATAL: Existing database 'ovirt_engine_history' or user 'ovirt_engine_history' found and temporary ones created We have upgraded the running 4.3 installation to the latest version and also use the latest packages for the upgrade on the new CentOS 8.2 installation. The back-up is made following the Hosted Engine upgrade steps in the manual, using: `engine-backup --scope=all --mode=backup --file=backup.bck --log=backuplog.log` The upgrade is performed after copying the backup.bck file to the new server and using `hosted-engine --deploy --restore-from-file=backup.bck` After creating the Engine VM, the installation process hangs when the backup is restored. We tried it several times, using a complete or a partial back-up. Old/current oVirt version: 4.3.10.4-1.el7 New version: 4.4.1.8 ovirt-ansible-hosted-engine-setup: 1.1.6 Did anyone get the same error while upgrading an existing installation? Thanks! Error log Ansible on Host: 2020-07-15 12:34:09,361+0200 INFO otopi.ovirt_hosted_engine_setup.ansible_utils ansible_utils._process_output:109 TASK [ovirt.hosted_engine_setup : Run engine-backup] 2020-07-15 12:35:28,778+0200 DEBUG otopi.ovirt_hosted_engine_setup.ansible_utils ansible_utils._process_output:103 {'msg': 'non-zero return code', 'cmd': 'engine-backup --mode=restore --log=/var/log/ovirt-engine/setup/restore-backup-$(date -u +%Y%m%d%H%M%S).log --file=/root/engine_backup --provision-all-databases --restore-permissions', 'stdout': "Start of engine-backup with mode 'restore'\nscope: all\narchive file: /root/engine_backup\nlog file: /var/log/ovirt-engine/setup/restore-backup-20200715103410.log\nPreparing to restore:\n- Unpacking file '/root/engine_backup'\nRestoring:\n- Files\n------------------------------------------------------------------------------\nPlease note:\n\nOperating system is different from the one used during backup.\nCurrent operating system: centos8\nOperating system at backup: centos7\n\nApache httpd configuration will not be restored.\nYou will be asked about it on the next engine-setup run.\n---------------------------------------------------------- --------------------\nProvisioning PostgreSQL users/databases:\n- user 'engine', database 'engine'\n- extra user 'ovirt_engine_history' having grants on database engine, created with a random password\n- user 'ovirt_engine_history', database 'ovirt_engine_history'", 'stderr': "FATAL: Existing database 'ovirt_engine_history' or user 'ovirt_engine_history' found and temporary ones created - Please clean up everything and try again", 'rc': 1, 'start': '2020-07-15 12:34:10.824630', 'end': '2020-07-15 12:35:28.488261', 'delta': '0:01:17.663631', 'changed': True, 'invocation': {'module_args': {'_raw_params': 'engine-backup --mode=restore --log=/var/log/ovirt-engine/setup/restore-backup-$(date -u +%Y%m%d%H%M%S).log --file=/root/engine_backup --provision-all-databases --restore-permissions', '_uses_shell': True, 'warn': True, 'stdin_add_newline': True, 'strip_empty_ends': True, 'argv': None, 'chdir': None, 'executable': None, 'creates': None, 'removes': None, 'stdin': None}}, 'stdout_lines' : ["Start of engine-backup with mode 'restore'", 'scope: all', 'archive file: /root/engine_backup', 'log file: /var/log/ovirt-engine/setup/restore-backup-20200715103410.log', 'Preparing to restore:', "- Unpacking file '/root/engine_backup'", 'Restoring:', '- Files', '------------------------------------------------------------------------------', 'Please note:', '', 'Operating system is different from the one used during backup.', 'Current operating system: centos8', 'Operating system at backup: centos7', '', 'Apache httpd configuration will not be restored.', 'You will be asked about it on the next engine-setup run.', '------------------------------------------------------------------------------', 'Provisioning PostgreSQL users/databases:', "- user 'engine', database 'engine'", "- extra user 'ovirt_engine_history' having grants on database engine, created with a random password", "- user 'ovirt_engine_history', database 'ovirt_engine_history'"], 'stderr_lines': ["FATAL: Existing d atabase 'ovirt_engine_history' or user 'ovirt_engine_history' found and temporary ones created - Please clean up everything and try again"], '_ansible_no_log': False, '_ansible_delegated_vars': {'ansible_host': 'ovirt-management.dc1.triplon', 'ansible_port': None, 'ansible_user': 'root'}} 2020-07-15 12:35:28,879+0200 ERROR otopi.ovirt_hosted_engine_setup.ansible_utils ansible_utils._process_output:107 fatal: [localhost -> ovirt-management.dc1.triplon]: FAILED! => {"changed": true, "cmd": "engine-backup --mode=restore --log=/var/log/ovirt-engine/setup/restore-backup-$(date -u +%Y%m%d%H%M%S).log --file=/root/engine_backup --provision-all-databases --restore-permissions", "delta": "0:01:17.663631", "end": "2020-07-15 12:35:28.488261", "msg": "non-zero return code", "rc": 1, "start": "2020-07-15 12:34:10.824630", "stderr": "FATAL: Existing database 'ovirt_engine_history' or user 'ovirt_engine_history' found and temporary ones created - Please clean up everything and try again", "stderr_lines": ["FATAL: Existing database 'ovirt_engine_history' or user 'ovirt_engine_history' found and temporary ones created - Please clean up everything and try again"], "stdout": "Start of engine-backup with mode 'restore'\nscope: all\narchive file: /root/engine_backup\nlog file: /var/log/ov irt-engine/setup/restore-backup-20200715103410.log\nPreparing to restore:\n- Unpacking file '/root/engine_backup'\nRestoring:\n- Files\n------------------------------------------------------------------------------\nPlease note:\n\nOperating system is different from the one used during backup.\nCurrent operating system: centos8\nOperating system at backup: centos7\n\nApache httpd configuration will not be restored.\nYou will be asked about it on the next engine-setup run.\n------------------------------------------------------------------------------\nProvisioning PostgreSQL users/databases:\n- user 'engine', database 'engine'\n- extra user 'ovirt_engine_history' having grants on database engine, created with a random password\n- user 'ovirt_engine_history', database 'ovirt_engine_history'", "stdout_lines": ["Start of engine-backup with mode 'restore'", "scope: all", "archive file: /root/engine_backup", "log file: /var/log/ovirt-engine/setup/restore-backup-20200715103410.log", "Prep aring to restore:", "- Unpacking file '/root/engine_backup'", "Restoring:", "- Files", "------------------------------------------------------------------------------", "Please note:", "", "Operating system is different from the one used during backup.", "Current operating system: centos8", "Operating system at backup: centos7", "", "Apache httpd configuration will not be restored.", "You will be asked about it on the next engine-setup run.", "------------------------------------------------------------------------------", "Provisioning PostgreSQL users/databases:", "- user 'engine', database 'engine'", "- extra user 'ovirt_engine_history' having grants on database engine, created with a random password", "- user 'ovirt_engine_history', database 'ovirt_engine_history'"]} restore-backup-xx.log file on the created Hosted Engine (retrieved by Ansible after failing): 2020-07-15 15:57:36 6437: Start of engine-backup mode restore scope all file /root/engine_backup 2020-07-15 15:57:36 6437: OUTPUT: Start of engine-backup with mode 'restore' 2020-07-15 15:57:36 6437: OUTPUT: scope: all 2020-07-15 15:57:36 6437: OUTPUT: archive file: /root/engine_backup 2020-07-15 15:57:36 6437: OUTPUT: log file: /var/log/ovirt-engine/setup/restore-backup-20200715135736.log 2020-07-15 15:57:36 6437: OUTPUT: Preparing to restore: 2020-07-15 15:57:36 6437: OUTPUT: - Unpacking file '/root/engine_backup' 2020-07-15 15:57:36 6437: Opening tarball /root/engine_backup to /tmp/engine-backup.5tvwGDx3qs 2020-07-15 15:57:37 6437: Verifying hash 2020-07-15 15:57:37 6437: Verifying version 2020-07-15 15:57:37 6437: Reading config 2020-07-15 15:57:37 6437: OUTPUT: Restoring: 2020-07-15 15:57:37 6437: OUTPUT: - Files 2020-07-15 15:57:37 6437: Restoring files 2020-07-15 15:57:38 6437: Reloading configuration 2020-07-15 15:57:38 6437: OUTPUT: Provisioning PostgreSQL users/databases: 2020-07-15 15:57:38 6437: provisionDB: user engine host localhost port 5432 database engine secured False secured_host_validation False 2020-07-15 15:57:38 6437: OUTPUT: - user 'engine', database 'engine' [ INFO ] Stage: Initializing [ INFO ] Stage: Environment setup Configuration files: /etc/ovirt-engine-setup.conf.d/10-packaging-jboss.conf, /etc/ovirt-engine-setup.conf.d/10-packaging.conf, /etc/ovirt-engine-setup.conf.d/20-setup-ovirt-post.conf, /tmp/engine-backup.5tvwGDx3qs/pg-provision-answer-file Log file: /var/log/ovirt-engine/setup/ovirt-engine-provisiondb-20200715155739-3o20a7.log Version: otopi-1.9.2 (otopi-1.9.2-1.el8) [ INFO ] Stage: Environment packages setup [ INFO ] Stage: Programs detection [ INFO ] Stage: Environment customization [ INFO ] Stage: Setup validation [ INFO ] Stage: Transaction setup [ INFO ] Stage: Misc configuration (early) [ INFO ] Stage: Package installation [ INFO ] Stage: Misc configuration [ INFO ] Initializing PostgreSQL [ INFO ] Creating PostgreSQL 'engine' database [ INFO ] Configuring PostgreSQL [ INFO ] Install selinux module /usr/share/ovirt-engine/selinux/ansible-runner-service.cil [ INFO ] Stage: Transaction commit [ INFO ] Stage: Closing up [ INFO ] Stage: Clean up Log file is located at /var/log/ovirt-engine/setup/ovirt-engine-provisiondb-20200715155739-3o20a7.log [ INFO ] Stage: Pre-termination [ INFO ] Stage: Termination [ INFO ] Execution of provisiondb completed successfully 2020-07-15 15:58:14 6437: OUTPUT: - extra user 'ovirt_engine_history' having grants on database engine, created with a random password [ INFO ] Stage: Initializing [ INFO ] Stage: Environment setup Configuration files: /etc/ovirt-engine-setup.conf.d/10-packaging-jboss.conf, /etc/ovirt-engine-setup.conf.d/10-packaging.conf, /etc/ovirt-engine-setup.conf.d/20-setup-ovirt-post.conf, /tmp/engine-backup.5tvwGDx3qs/pg-provision-answer-file Log file: /var/log/ovirt-engine/setup/ovirt-engine-provisiondb-20200715155815-j4ba3l.log Version: otopi-1.9.2 (otopi-1.9.2-1.el8) [ INFO ] Stage: Environment packages setup [ INFO ] Stage: Programs detection [ INFO ] Stage: Environment customization [ INFO ] Stage: Setup validation [ INFO ] Stage: Transaction setup [ INFO ] Stage: Misc configuration (early) [ INFO ] Stage: Package installation [ INFO ] Stage: Misc configuration [ INFO ] Install selinux module /usr/share/ovirt-engine/selinux/ansible-runner-service.cil [ INFO ] Stage: Transaction commit [ INFO ] Stage: Closing up [ INFO ] Stage: Clean up Log file is located at /var/log/ovirt-engine/setup/ovirt-engine-provisiondb-20200715155815-j4ba3l.log [ INFO ] Stage: Pre-termination [ INFO ] Stage: Termination [ INFO ] Execution of provisiondb completed successfully 2020-07-15 15:58:46 6437: provisionDB: user ovirt_engine_history host localhost port 5432 database ovirt_engine_history secured False secured_host_validation False 2020-07-15 15:58:46 6437: OUTPUT: - user 'ovirt_engine_history', database 'ovirt_engine_history' [ INFO ] Stage: Initializing [ INFO ] Stage: Environment setup Configuration files: /etc/ovirt-engine-setup.conf.d/10-packaging-jboss.conf, /etc/ovirt-engine-setup.conf.d/10-packaging.conf, /etc/ovirt-engine-setup.conf.d/20-setup-ovirt-post.conf, /tmp/engine-backup.5tvwGDx3qs/pg-provision-answer-file Log file: /var/log/ovirt-engine/setup/ovirt-engine-provisiondb-20200715155847-qk7ipy.log Version: otopi-1.9.2 (otopi-1.9.2-1.el8) [ INFO ] Stage: Environment packages setup [ INFO ] Stage: Programs detection [ INFO ] Stage: Environment customization [ INFO ] Stage: Setup validation [ INFO ] Stage: Transaction setup [ INFO ] Stage: Misc configuration (early) [ INFO ] Stage: Package installation [ INFO ] Stage: Misc configuration [ INFO ] Creating PostgreSQL 'ovirt_engine_history' database [ INFO ] Configuring PostgreSQL [ ERROR ] Failed to execute stage 'Misc configuration': Existing resources found, new ones created: database ovirt_engine_history_20200715155850 user ovirt_engine_history_20200715155850 [ INFO ] Stage: Clean up Log file is located at /var/log/ovirt-engine/setup/ovirt-engine-provisiondb-20200715155847-qk7ipy.log [ INFO ] Stage: Pre-termination [ INFO ] Stage: Termination [ ERROR ] Execution of provisiondb failed 2020-07-15 15:58:52 6437: FATAL: Existing database 'ovirt_engine_history' or user 'ovirt_engine_history' found and temporary ones created - Please clean up everything and try again

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Hosted Engine Ovirt 4.3.8
by Vijay Sachdeva 23 Jul '20

23 Jul '20

Hi Everyone, Does anyone has any idea why hosted engine setup stuck at “Wait for host to be up”. It’s been 4 hours deployment is going on and got stuck. Any help please..!! Thanks Vijay Sachdeva

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oVirt 4.4 Engine data migration & GUI notes
by Andrei Verovski 23 Jul '20

23 Jul '20

Hi ! I have installed new oVirt 4.4 Engine (as separate entity, not hosted engine) and migrated data from old 4.3 installation. Everything went smooth. Q: Which PostgreSQL password now active - new one I entered during install or old which could migrate with old data? I noticed GUI changes straight on dashboard. Icons on top (data centres, clusters, hosts, etc) are simply put, too huge. This serves no useful purpose whatsoever, and consumes screen real estate for no reason. Decreasing their size by 2/3 will help to make 1st page more informative at 1st sight without extra scrolling. with best regards Andrei

3 4

HostedEngine start error: could not find capabilities for arch=x86_64 domaintype=kvm
by Gianluca Cecchi 23 Jul '20

23 Jul '20

Hello, I'm importing a VM into a new oVirt environment that is in 4.3.10: the new host is the same as the previous one (only difference it is in 4.3.10 while the old one in 4.3.9). This VM acted as a single host HCI environment (with 4.3.9). I imported the storage domain containing the VM and its disks and the VM boots ok. Now its Hosted Engine VM (that is so a nested VM) doesn't start. I think it was good when I stopped/detached it... and so I would like to cross check and verify if I missed something configuring the new environment or something changed from 4.3.9 to 4.3.10 In vdsm.log I see this reason: 2020-07-23 14:38:20,489+0200 ERROR (vm/9233dc8b) [virt.vm] (vmId='9233dc8b-7a4d-4fac-8551-dc7407f36548') The vm start process failed (vm: 934) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 868, in _startUnderlyingVm self._run() File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 2892, in _run dom = self._connection.defineXML(self._domain.xml) File "/usr/lib/python2.7/site-packages/vdsm/common/libvirtconnection.py", line 131, in wrapper ret = f(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/common/function.py", line 94, in wrapper return func(inst, *args, **kwargs) File "/usr/lib64/python2.7/site-packages/libvirt.py", line 3743, in defineXML if ret is None:raise libvirtError('virDomainDefineXML() failed', conn=self) libvirtError: invalid argument: could not find capabilities for arch=x86_64 domaintype=kvm The relevant parts of the generated xml in vdsm.log seems: 2020-07-23 14:38:20,487+0200 INFO (vm/9233dc8b) [virt.vm] (vmId='9233dc8b-7a4d-4fac-8551-dc7407f36548') <?xml version="1.0" encoding="ut f-8"?><domain type="kvm" xmlns:ns0="http://ovirt.org/vm/tune/1.0" xmlns:ovirt-vm="http://ovirt.org/vm/1.0"> <name>HostedEngine</name> <uuid>9233dc8b-7a4d-4fac-8551-dc7407f36548</uuid> <memory>16777216</memory> <currentMemory>16777216</currentMemory> <iothreads>1</iothreads> <maxMemory slots="16">67108864</maxMemory> <vcpu current="2">32</vcpu> <sysinfo type="smbios"> <system> <entry name="manufacturer">oVirt</entry> <entry name="product">oVirt Node</entry> <entry name="version">7-7.1908.0.el7.centos</entry> <entry name="serial">704e1338-5dec-46f8-a186-8c2080dcefd8</entry> <entry name="uuid">9233dc8b-7a4d-4fac-8551-dc7407f36548</entry> </system> </sysinfo> <clock adjustment="0" offset="variable"> <timer name="rtc" tickpolicy="catchup"/> <timer name="pit" tickpolicy="delay"/> <timer name="hpet" present="no"/> </clock> <features> <acpi/> </features> <cpu match="exact"> <model>Skylake-Server</model> <feature name="spec-ctrl" policy="require"/> <feature name="ssbd" policy="require"/> <feature name="md-clear" policy="require"/> <topology cores="2" sockets="16" threads="1"/> <numa> <cell cpus="0,1" id="0" memory="16777216"/> </numa> </cpu> <cputune/> ... </metadata> <on_poweroff>destroy</on_poweroff><on_reboot>destroy</on_reboot><on_crash>destroy</on_crash></domain> (vm:2890) Any insights? The configuration of the new 4.3.10 physical oVirt environment that contains the VM has this cluster cpu type: Intel Skylake Server IBRS SSBD MDS Family Do I have to change it to anything else? I don't remember how it was set in 4.3.9 Thanks in advance, Gianluca

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Re: [moVirt] New ovirt 4.4.0.3-1.el8 leaves disks in illegal state on all snapshot actions
by Tomas Jelinek 23 Jul '20

23 Jul '20

forwarding to the correct list On Wed, Jul 22, 2020 at 5:15 PM Henri Aanstoot <fash(a)fash.nu> wrote: > Hi all, > > I've got 2 two node setup, image based installs. > When doing ova exports or generic snapshots, things seem in order. > Removing snapshots shows warning 'disk in illegal state' > > Mouse hover shows .. please do not shutdown before succesfully remove > snapshot > > > ovirt-engine log > 2020-07-22 16:40:37,549+02 ERROR > [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] > (EE-ManagedExecutorService-commandCoordinator-Thread-2) > [264b0047-5aa6-4380-9d32-eb328fd6bed0] EVENT_ID: > VDS_BROKER_COMMAND_FAILURE(10,802), VDSM node2.lab command MergeVDS failed: > Merge failed > 2020-07-22 16:40:37,549+02 ERROR > [org.ovirt.engine.core.vdsbroker.vdsbroker.MergeVDSCommand] > (EE-ManagedExecutorService-commandCoordinator-Thread-2) > [264b0047-5aa6-4380-9d32-eb328fd6bed0] Command 'MergeVDSCommand(HostName = > node2.lab, > MergeVDSCommandParameters:{hostId='02df5213-1243-4671-a1c6-6489d7146319', > vmId='64c25543-bef7-4fdd-8204-6507046f5a34', > storagePoolId='5a4ea80c-b3b2-11ea-a890-00163e3cb866', > storageDomainId='9a12f1b2-5378-46cc-964d-3575695e823f', > imageGroupId='3f7ac8d8-f1ab-4c7a-91cc-f34d0b8a1cb8', > imageId='c757e740-9013-4ae0-901d-316932f4af0e', > baseImageId='ebe50730-dec3-4f29-8a38-9ae7c59f2aef', > topImageId='c757e740-9013-4ae0-901d-316932f4af0e', bandwidth='0'})' > execution failed: VDSGenericException: VDSErrorException: Failed to > MergeVDS, error = Merge failed, code = 52 > 2020-07-22 16:40:37,549+02 ERROR [org.ovirt.engine.core.bll.MergeCommand] > (EE-ManagedExecutorService-commandCoordinator-Thread-2) > [264b0047-5aa6-4380-9d32-eb328fd6bed0] Engine exception thrown while > sending merge command: org.ovirt.engine.core.common.errors.EngineException: > EngineException: > org.ovirt.engine.core.vdsbroker.vdsbroker.VDSErrorException: > VDSGenericException: VDSErrorException: Failed to MergeVDS, error = Merge > failed, code = 52 (Failed with error mergeErr and code 52) > Caused by: org.ovirt.engine.core.vdsbroker.vdsbroker.VDSErrorException: > VDSGenericException: VDSErrorException: Failed to MergeVDS, error = Merge > failed, code = 52 > <driver name='qemu' error_policy='report'/> > <driver name='qemu' type='qcow2' cache='none' error_policy='stop' > io='threads'/> > 2020-07-22 16:40:39,659+02 ERROR > [org.ovirt.engine.core.bll.MergeStatusCommand] > (EE-ManagedExecutorService-commandCoordinator-Thread-3) > [264b0047-5aa6-4380-9d32-eb328fd6bed0] Failed to live merge. Top volume > c757e740-9013-4ae0-901d-316932f4af0e is still in qemu chain > [ebe50730-dec3-4f29-8a38-9ae7c59f2aef, c757e740-9013-4ae0-901d-316932f4af0e] > 2020-07-22 16:40:41,524+02 ERROR > [org.ovirt.engine.core.bll.snapshots.RemoveSnapshotSingleDiskLiveCommand] > (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-58) > [264b0047-5aa6-4380-9d32-eb328fd6bed0] Command id: > 'e0b2bce7-afe0-4955-ae46-38bcb8719852 failed child command status for step > 'MERGE_STATUS' > 2020-07-22 16:40:42,597+02 ERROR > [org.ovirt.engine.core.bll.snapshots.RemoveSnapshotSingleDiskLiveCommand] > (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-53) > [264b0047-5aa6-4380-9d32-eb328fd6bed0] Merging of snapshot > 'ef8f7e06-e48c-4a8c-983c-64e3d4ebfcf9' images > 'ebe50730-dec3-4f29-8a38-9ae7c59f2aef'..'c757e740-9013-4ae0-901d-316932f4af0e' > failed. Images have been marked illegal and can no longer be previewed or > reverted to. Please retry Live Merge on the snapshot to complete the > operation. > 2020-07-22 16:40:42,603+02 ERROR > [org.ovirt.engine.core.bll.snapshots.RemoveSnapshotSingleDiskLiveCommand] > (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-53) > [264b0047-5aa6-4380-9d32-eb328fd6bed0] Ending command > 'org.ovirt.engine.core.bll.snapshots.RemoveSnapshotSingleDiskLiveCommand' > with failure. > 2020-07-22 16:40:43,679+02 ERROR > [org.ovirt.engine.core.bll.snapshots.RemoveSnapshotCommand] > (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-15) > [264b0047-5aa6-4380-9d32-eb328fd6bed0] Ending command > 'org.ovirt.engine.core.bll.snapshots.RemoveSnapshotCommand' with failure. > 2020-07-22 16:40:43,774+02 ERROR > [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] > (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-15) > [264b0047-5aa6-4380-9d32-eb328fd6bed0] EVENT_ID: > USER_REMOVE_SNAPSHOT_FINISHED_FAILURE(357), Failed to delete snapshot > 'Auto-generated for Export To OVA' for VM 'Adhoc'. > > > VDSM on hypervisor > 2020-07-22 14:14:30,220+0200 ERROR (jsonrpc/5) [virt.vm] > (vmId='14283e6d-c3f0-4011-b90f-a1272f0fbc10') Live merge failed (job: > e59c54d9-b8d3-44d0-9147-9dd40dff57b9) (vm:5381) > if ret == -1: raise libvirtError ('virDomainBlockCommit() failed', > dom=self) > libvirt.libvirtError: internal error: qemu block name 'json:{"backing": > {"driver": "qcow2", "file": {"driver": "file", "filename": > "/rhev/data-center/mnt/10.12.0.9:_exports_data/9a12f1b2-5378-46cc-964d-3575695e823f/images/3206de41-ccdc-4f2d-a968-5e4da6c2ca3e/bb3aed4b-fc41-456a-9c18-1409a9aa6d14"}}, > "driver": "qcow2", "file": {"driver": "file", "filename": > "/rhev/data-center/mnt/10.12.0.9:_exports_data/9a12f1b2-5378-46cc-964d-3575695e823f/images/3206de41-ccdc-4f2d-a968-5e4da6c2ca3e/3995b256-2afb-4853-9360-33d0c12e5fd1"}}' > doesn't match expected '/rhev/data-center/mnt/10.12.0.9: > _exports_data/9a12f1b2-5378-46cc-964d-3575695e823f/images/3206de41-ccdc-4f2d-a968-5e4da6c2ca3e/3995b256-2afb-4853-9360-33d0c12e5fd1' > 2020-07-22 14:14:30,234+0200 INFO (jsonrpc/5) [jsonrpc.JsonRpcServer] RPC > call VM.merge failed (error 52) in 0.17 seconds (__init__:312) > > 2020-07-22 14:17:28,798+0200 INFO (jsonrpc/2) [api] FINISH getStats > error=Virtual machine does not exist: {'vmId': > '698d486c-edbf-4e28-a199-31a2e27bd808'} (api:129) > 2020-07-22 14:17:28,798+0200 INFO (jsonrpc/2) [jsonrpc.JsonRpcServer] RPC > call VM.getStats failed (error 1) in 0.00 seconds (__init__:312) > > Also in log, > INFO (jsonrpc/1) [api.virt] FINISH getStats return={'status': {'code': 1, > 'message': "Virtual machine does not exist: > But is is there and accessible > > Any advice here? > Henri > > > ovirt 4.4.0.3-1.el8 > > OS Version: > RHEL - 8 - 1.1911.0.9.el8 > OS Description: > oVirt Node 4.4.0 > Kernel Version: > 4.18.0 - 147.8.1.el8_1.x86_64 > KVM Version: > 4.1.0 - 23.el8.1 > LIBVIRT Version: > libvirt-5.6.0-10.el8 > VDSM Version: > vdsm-4.40.16-1.el8 > SPICE Version: > 0.14.2 - 1.el8 > GlusterFS Version: > glusterfs-7.5-1.el8 > CEPH Version: > librbd1-12.2.7-9.el8 > Open vSwitch Version: > openvswitch-2.11.1-5.el8 > Nmstate Version: > nmstate-0.2.10-1.el8 > > _______________________________________________ > moVirt mailing list -- movirt(a)ovirt.org > To unsubscribe send an email to movirt-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/movirt@ovirt.org/message/3GXS3N77LEMQ… >

1 0

oVirt Network problem.
by Emil Dumitrache 22 Jul '20

22 Jul '20

Hello, I am new to oVirt. I have a problem and I don't know how to deal with it, i added another network besides the management network and after that the node did not respond to the oVIrt manager. I had to change the DNS to the new IP of the new network so that oVIrt manager can manage it. Now i have an error: Out-of-sync: Default route: host true, DC false. I checked on the node and the second network has DEFROUTE=NO and the management network to yes. I don't know why the manager is seeing that. Also the management IP does not respond to ping or anything. Please some advice for a newbie? The setup is: A standalone server with Centos7 and oVIrt manager installed and a node with ovirt node os. Thank you. [image: Tremend Logo] Emil Dumitrache IT Support Manager [image: Mobile] +40720450085 [image: Phone] +40-212-237-700 <0040212237700> [image: Email] emil.dumitrache(a)tremend.com [image: Website] www.tremend.com [image: Facebook] <https://www.facebook.com/TremendSoftware> [image: LinkedIN] [image: Skype] ------------------------------ Fastest growing Romanian company in Deloitte Fast 50 CE 2016

2 1

ovirt+SDN
by Marco Mangione 22 Jul '20

22 Jul '20

hello, anyone are using OVIRT with a SDN controller?

2 1

Re: Hosted Engine 4.4.1
by Vijay Sachdeva 22 Jul '20

22 Jul '20

Anyone please can help me out on this.? Vijay Sachdeva From: Vijay Sachdeva <vijay.sachdeva(a)indiqus.com> Date: Wednesday, 22 July 2020 at 8:24 PM To: Florian Schmid via Users <users(a)ovirt.org> Subject: Hosted Engine 4.4.1 Hello Everyone, Waiting for host to be up task is stuck for hours and when checked engine log found this below: 2020-07-22 16:50:35,717+02 ERROR [org.ovirt.engine.core.sso.utils.SsoUtils] (default task-1) [] OAuthException access_denied: Cannot authenticate user 'None@N/A': No valid profile found in credentials.. Has anyone faced such issue then please help me out..!! Thanks Vijay Sachdeva

1 0

Need help ovirt hosted engine storage in loked state
by Tarun Kushwaha 22 Jul '20

22 Jul '20

My ovirt hosted engine storage got in locked state. Now I am unable to perform any activity on this domain so guide me through how to unlock “hosted_storage” domain.

2 1

which cpu type should I chose ??
by tommy 22 Jul '20

22 Jul '20

Hi: 1.My server using as ovirt host is built on virtualbox and the cpu info is: vendor_id : GenuineIntel cpu family : 6 model : 142 model name : Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz stepping : 10 cpu MHz : 1992.002 cache size : 8192 KB physical id : 0 siblings : 3 core id : 2 cpu cores : 3 apicid : 2 initial apicid : 2 fpu : yes fpu_exception : yes cpuid level : 22 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc cpuid tsc_known_freq pni pclmulqdq vmx ssse3 cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx rdrand hypervisor lahf_lm abm 3dnowprefetch invpcid_single pti tpr_shadow flexpriority fsgsbase avx2 invpcid rdseed clflushopt md_clear flush_l1d bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs itlb_multihit srbds bogomips : 3984.00 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: 2.On the ovirt host page it appears that the host is unusable.The log info is: Host ohost3 moved to Non-Operational state as host does not meet the cluster's minimum CPU level. Missing CPU features : model_IvyBridge, ssbd, spec_ctrl 3.I think the problem is on cluster's cpu type setting, but which one should I chose to fit for the host?

3 2

invalid spf record for ovirt.org
by Jorick Astrego 22 Jul '20

22 Jul '20

Hi, During routine maintenance on our mailserver I noticed the following in the log: [22/Jul/2020 14:33:33] Error when parsing SPF TXT record for domain: ovirt.org, envelope-from=users-bounces(a)ovirt.org, message: Invalid character found near "" in "66.187.233.88" A check on MXtoolbox also gives an invalid systax error: v=spf1 a:mail.ovirt.org a:gerrit.ovirt.org 66.187.233.88 ~all Prefix Type Value PrefixDesc Description Error v spf1 The SPF record version + a mail.ovirt.org Pass Match if IP has a DNS 'A' record in given domain. + a gerrit.ovirt.org Pass Match if IP has a DNS 'A' record in given domain. + 66.187.233.88 Pass Unknown Unknown mechanisms are not allowed ~ all SoftFail Always matches. It goes at the end of your record. Test Result <https://mxtoolbox.com/problem/spf/spf-syntax-check?page=prob_spf&action=spf…> SPF Syntax Check Invalid syntax found Met vriendelijke groet, With kind regards, Jorick Astrego Netbulae Virtualization Experts ---------------- Tel: 053 20 30 270 info(a)netbulae.eu Staalsteden 4-3A KvK 08198180 Fax: 053 20 30 271 www.netbulae.eu 7547 TA Enschede BTW NL821234584B01 ----------------

3 2

4.4: Export as OVA always fails w/ ACTION_TYPE_FAILED_INVALID_OVA_DESTINATION_FOLDER
by Gilboa Davara 22 Jul '20

22 Jul '20

Hello all, I'm trying to export a VM as OVA on a single host hyper converged (over NFS) 4.4 installation, and no matter which host destination directory I set, with or without a trailing '/' (per bugzilla #1780424) the export fails with the same error (see below). Export into the export domain (on the same path) seems to work just fine. $ cat engine.log | grep WARN 2020-07-22 14:51:50,155+03 WARN [org.ovirt.engine.core.bll.exportimport.ExportVmToOvaCommand] (default task-158) [57c42e68-155e-4bd2-9dcd-bbc620088943] Validation of action 'ExportVmToOva' failed for user gilboa@internal-authz. Reasons: VAR__ACTION__EXPORT,VAR__TYPE__VM,ACTION_TYPE_FAILED_INVALID_OVA_DESTINATION_FOLDER,$vdsName gilboa-home-srv.localdomain,$directory /exports/export/kvm/gilboa-vmh-probe64 2020-07-22 14:52:22,077+03 WARN [org.ovirt.engine.core.bll.exportimport.ExportVmToOvaCommand] (default task-160) [092fb51d-1054-43ff-9161-69943c677512] Validation of action 'ExportVmToOva' failed for user gilboa@internal-authz. Reasons: VAR__ACTION__EXPORT,VAR__TYPE__VM,ACTION_TYPE_FAILED_INVALID_OVA_DESTINATION_FOLDER,$vdsName gilboa-home-srv.localdomain,$directory /tmp 2020-07-22 14:52:45,504+03 WARN [org.ovirt.engine.core.bll.exportimport.ExportVmToOvaCommand] (default task-160) [3c8ae09d-3d03-42dd-b2e8-b488052674f1] Validation of action 'ExportVmToOva' failed for user gilboa@internal-authz. Reasons: VAR__ACTION__EXPORT,VAR__TYPE__VM,ACTION_TYPE_FAILED_INVALID_OVA_DESTINATION_FOLDER,$vdsName gilboa-home-srv.localdomain,$directory /tmp 2020-07-22 15:04:32,393+03 WARN [org.ovirt.engine.core.bll.exportimport.ExportVmToOvaCommand] (default task-159) [7a234e5a-be10-4b0b-b817-eb682b846272] Validation of action 'ExportVmToOva' failed for user gilboa@internal-authz. Reasons: VAR__ACTION__EXPORT,VAR__TYPE__VM,ACTION_TYPE_FAILED_INVALID_OVA_DESTINATION_FOLDER,$vdsName gilboa-home-srv.localdomain,$directory /exports/export/kvm/temp 2020-07-22 15:10:07,066+03 WARN [org.ovirt.engine.core.bll.exportimport.ExportVmToOvaCommand] (default task-159) [75e66244-aa1c-4d40-8f9f-578cccb265a3] Validation of action 'ExportVmToOva' failed for user gilboa@internal-authz. Reasons: VAR__ACTION__EXPORT,VAR__TYPE__VM,ACTION_TYPE_FAILED_INVALID_OVA_DESTINATION_FOLDER,$vdsName gilboa-home-srv.localdomain,$directory /exports/export/kvm/temp/gilboa-vmh-probe64.ova 2020-07-22 15:10:46,480+03 WARN [org.ovirt.engine.core.bll.exportimport.ExportVmToOvaCommand] (default task-163) [6a6e9cae-b111-4f89-8dad-41a45a57c96c] Validation of action 'ExportVmToOva' failed for user gilboa@internal-authz. Reasons: VAR__ACTION__EXPORT,VAR__TYPE__VM,ACTION_TYPE_FAILED_INVALID_OVA_DESTINATION_FOLDER,$vdsName gilboa-home-srv.localdomain,$directory /exports/export/kvm/temp - Gilboa

1 0

Hosted Engine | Ovirt 4.4.1
by Vijay Sachdeva 22 Jul '20

22 Jul '20

Hi Everyone Getting below error when deploying hosted engine: [ ERROR ] fatal: [localhost]: FAILED! => {"attempts": 10, "changed": false, "msg": "The Python 2 yum module is needed for this module. If you require Python 3 support use the `dnf` Ansible module instead."} Any idea how to fix it? Thanks Vijay Sachdeva

2 2

Reinstall failed on 4.4.1.1 with custom kernel settings
by mmarino＠extraordy.com 22 Jul '20

22 Jul '20

Hi, after the upgrade from 4.4.1 to 4.4.1.1, it seems that I cannot reinstall adding custom kernel settings. In my case, I'm trying to add "ixgbe.allow_unsupported_sfp=1" to cmdline but reinstall process fails without showing any relevant error in /var/log/vdsm/vdsm.log. I did the same test on version 4.4.1 and it works without problems. On version 4.4.1 I tried to (1) add a parameter with reinstall, (2) add a second parameter and reinstall, (3) remove all params and reinstall and (4) finally add only one custom param with reinstall. All tests are ok on version 4.4.1 and the problem happens only on version 4.4.1.1. Please, have you some idea on how to solve the issue? Is this a bug? Thank you, Marco

3 5

how to remove host (phisical damaged) on ovirt web panel ??
by tommy 22 Jul '20

22 Jul '20

The host is damaged, then the vms running on it also became unknown status. I cannot remove the vm and host on ovirt web panel. Somebody can give me saome advive ? Thanks.

2 2

OVA import does not upload disks
by Paolo Airaldi 22 Jul '20

22 Jul '20

Hello, I'm running 4.3.5.4-1.el7. I've exported a VM as OVA and now I'm trying to import it in another Data Center (it's like a DR Data Center) Import runs successfully both from GUI and from Ansible, but imported VM disks are empty and the VM fails to boot. How can I import disks content too? Thanks in advance for any help. Paolo

1 0

Re: ovirt 4.4.1.1 hci and problems with ansible 2.9.10 and/or missing python2
by Holger Petrick 21 Jul '20

21 Jul '20

Hello Gianluca, thanks for opening the bug. I have also reported my test scenario below. (One thing more in my case, the standalone Manager needs to be installed on EL8 and not like documents says on EL7. With EL7 load is gives an error that Engine for EL7 is not avaiable. Document needs to be updated.) --- The same error occurs when trying to add a node to a standalone Engine Manager. Steps to Reproduce: 1. install a standalone Engine Manager on EL8 step by step with this documentation https://www.ovirt.org/documentation/installing_ovirt_as_a_standalone_manage… 2. install a node using ovirt-node-ng-installer-4.4.1-2020071311.el8.iso 3. try to add the node inside the Engine Manager Log output: 2020-07-21 10:14:17 CEST - included: /usr/share/ovirt-engine/ansible-runner-service-project/project/roles/ovirt-host-deploy-vdsm/tasks/packages.yml for ovirtnode1.example.net 2020-07-21 10:14:17 CEST - included: /usr/share/ovirt-engine/ansible-runner-service-project/project/roles/ovirt-host-deploy-vdsm/tasks/vdsmid.yml for ovirtnode1.example.net 2020-07-21 10:14:17 CEST - included: /usr/share/ovirt-engine/ansible-runner-service-project/project/roles/ovirt-host-deploy-vdsm/tasks/pki.yml for ovirtnode1.example.net 2020-07-21 10:14:17 CEST - included: /usr/share/ovirt-engine/ansible-runner-service-project/project/roles/ovirt-host-deploy-vdsm/tasks/restart_services.yml for ovirtnode1.example.net 2020-07-21 10:14:17 CEST - TASK [ovirt-host-deploy-vdsm : Install ovirt-host package] ********************* 2020-07-21 10:14:17 CEST - 2020-07-21 10:14:17 CEST - fatal: [ovirtnode1.example.net] FAILED! => {"changed": false, "module_stderr": "/bin/sh: /usr/bin/python2: No such file or directory\n", "module_stdout": "", "msg": "The module failed to execute correctly, you probably need to set the interpreter.\nSee stdout/stderr for the exact error", "rc": 127} 2020-07-21 10:14:17 CEST - { "status" : "OK", "msg" : "", "data" : { "uuid" : "bfb59a41-6672-4115-ba93-1755556b3d11", "counter" : 61, "stdout" : "fatal: [ovirtnode1.example.net] FAILED! => {\"changed\": false, \"module_stderr\": \"/bin/sh: /usr/bin/python2: No such file or directory\\n\", \"module_stdout\": \"\", \"msg\": \"The module failed to execute correctly, you probably need to set the interpreter.\\nSee stdout/stderr for the exact error\", \"rc\": 127}", "start_line" : 54, "end_line" : 55, "runner_ident" : "230c108e-cb2a-11ea-97da-00155d120809", "event" : "runner_on_failed", "pid" : 28965, "created" : "2020-07-21T08:14:16.528490", "parent_uuid" : "00155d12-0809-c845-9450-0000000001a1", "event_data" : { "playbook" : "ovirt-host-deploy.yml", "playbook_uuid" : "3a66c11c-02f9-492a-937d-21f1386e492d", "play" : "all", "play_uuid" : "00155d12-0809-c845-9450-000000000006", "play_pattern" : "all", "task" : "Install ovirt-host package", "task_uuid" : "00155d12-0809-c845-9450-0000000001a1", "task_action" : "yum", "task_args" : "", "task_path" : "/usr/share/ovirt-engine/ansible-runner-service-project/project/roles/ovirt-host-deploy-vdsm/tasks/packages.yml:2", "role" : "ovirt-host-deploy-vdsm", "host" : "ovirtnode1.example.net", "remote_addr" : "ovirtnode1.example.net", "res" : { "module_stdout" : "", "module_stderr" : "/bin/sh: /usr/bin/python2: No such file or directory\n", "msg" : "The module failed to execute correctly, you probably need to set the interpreter.\nSee stdout/stderr for the exact error", "rc" : 127, "_ansible_no_log" : false, "changed" : false }, "start" : "2020-07-21T08:14:15.365609", "end" : "2020-07-21T08:14:16.528185", "duration" : 1.162576, "ignore_errors" : null, "event_loop" : null,a "uuid" : "bfb59a41-6672-4115-ba93-1755556b3d11" } }

1 0

ovirt 4.4 installation issues
by Markus Schaufler 21 Jul '20

21 Jul '20

Hi all, in our environment, CentOS7 and RHEL7 for the most part (Ovirt 4.3 and RHV 4.3), we are able to set a proxy directly in /etc/yum.conf (or on the single repo) to momentarily bypass some network restrictions. The proxy settings looks like this: proxy=http://our-proxy.domain:8080 proxy_username=user proxy_password=password But is also works properly when it is set directly from CLI, and this is the one we use more often: export http_proxy=http://user:password@our-proxy.domain:8080 export https_proxy=https://user:password@our-proxy.domain:8080 We are having difficulties to set the same proxy on CentOS8 / Ovirt 4.4.x. There is no way the proxy settings allows us to run "yum update". Extra Packages for Enterprise Linux 8 - x86_64 0.0 B/s | 0 B 00:00 Errors during downloading metadata for repository 'ovirt-4.4-epel': - Curl error (56): Failure when receiving data from the peer for https://mirrors.fedoraproject.org/metalink?repo=epel-8&arch=x86_64&infra=st… [Received HTTP code 407 from proxy after CONNECT] Error: Failed to download metadata for repo 'ovirt-4.4-epel': Cannot prepare internal mirrorlist: Curl error (56): Failure when receiving data from the peer for https://mirrors.fedoraproject.org/metalink?repo=epel-8&arch=x86_64&infra=st… [Received HTTP code 407 from proxy after CONNECT] Can somebody maybe point us to a solution? The above command is extracted by 'yum update' after a clean installation of Ovirt 4.4.1-2020070811 (but the same issue happened on previous versions and Nightly versions too). Thank you, Markus

3 3

Need Help in setting up oVirt, Looking for some help (From India)
by Dhanasekar Mani 21 Jul '20

21 Jul '20

Hello, We are setting up oVirt and we are having some issues in setting up. Are there any oVirt members who can assist us from India ? We are from Bangalore. Thanks & Regards, Mani *i prefer "i did this & i have done this", rather than "i will do it"*

2 2

Ovirt Hosted Engine Setup
by Vijay Sachdeva 21 Jul '20

21 Jul '20

Hi All, I am trying to deploy hosted engine setup, the setup got stuck at below for hours: Is this is a known bug? Thanks Vijay Sachdeva

4 6

Slow ova export performance
by francesco＠shellrent.com 20 Jul '20

20 Jul '20

Hi All, I'm facing a really slow export ov vms hosted on a single node cluster, in a local storage. The Vm disk is 600 GB and the effective usage is around 300 GB. I estimated that the following process would take up about 15 hours to end: vdsm 25338 25332 99 04:14 pts/0 07:40:09 qemu-img measure -O qcow2 /rhev/data-center/mnt/_data/6775c41c-7d67-451b-8beb-4fd086eade2e/images/a084fa36-0f93-45c2-a323-ea9ca2d16677/55b3eac5-05b2-4bae-be50-37cde7050697 A strace -p of the pid shows a slow progression to reach the effective size. lseek(11, 3056795648, SEEK_DATA) = 3056795648 lseek(11, 3056795648, SEEK_HOLE) = 13407092736 lseek(14, 128637468672, SEEK_DATA) = 128637468672 lseek(14, 128637468672, SEEK_HOLE) = 317708828672 lseek(14, 128646250496, SEEK_DATA) = 128646250496 lseek(14, 128646250496, SEEK_HOLE) = 317708828672 lseek(14, 128637730816, SEEK_DATA) = 128637730816 lseek(14, 128637730816, SEEK_HOLE) = 317708828672 lseek(14, 128646774784, SEEK_DATA) = 128646774784 lseek(14, 128646774784, SEEK_HOLE) = 317708828672 lseek(14, 128646709248, SEEK_DATA) = 128646709248 The process take a single full core, but i don't think this is the problem. The I/O is almost nothing. Any idea/suggestion? Thank you for your time Regards

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VDSM HOST ISSUE - Message timeout which can be caused by communication issues
by lu.alfonsi＠almaviva.it 20 Jul '20

20 Jul '20

Good morning, i have installed a new ovirt 4.3.10 enviroment but sometimes on the events of some hosts i read this error message: VDSM node-1-ra command Get Host Capabilities failed: Message timeout which can be caused by communication issues Due to this issue hosts are in unresponsive state and the only way to resolve this is and activate host in the cluster, is to restart the ovirt engine service. Can anyone help me? Thanks in advance Luigi

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oVirt install questions
by David White 20 Jul '20

20 Jul '20

I'm reading through all of the documentation at https://ovirt.org/documentation/, and am a bit overwhelmed with all of the different options for installing oVirt. My particular use case is that I'm looking for a way to manage VMs on multiple physical servers from 1 interface, and be able to deploy new VMs (or delete VMs) as necessary. Ideally, it would be great if I could move a VM from 1 host to a different host as well, particularly in the event that 1 host becomes degraded (bad HDD, bad processor, etc...) I'm trying to figure out what the difference is between an oVirt Node and the oVirt Engine, and how the engine differs from the Manager. I get the feeling that `Engine` = `Manager`. Same thing. I further think I understand the Engine to be essentially synonymous with a vCenter VM for ESXi hosts. Is this correct? If so, then what's the difference between the `self-hosted` vs the `stand-alone` engines? oVirt Engine requirements look to be a minimum of 4GB RAM and 2CPUs. oVirt Nodes, on the other hand, require only 2GB RAM. Is this a requirement just for the physical host, or is that how much RAM that each oVirt node process requires? In other words, if I have a physical host with 12GB of physical RAM, will I only be able to allocate 10GB of that to guest VMs? How much of that should I dedicated to the oVirt node processes? Can you install the oVirt Engine as a VM onto an existing oVirt Node? And then connect that same node to the Engine, once the Engine is installed? Reading through the documentation, it also sounds like oVirt Engine and oVirt Node require different versions of RHEL or CentOS. I read that the Engine for oVirt 4.4.0 requires RHEL (or CentOS) 8.2, whereas each Node requires 7.x (although I'll plan to just use the oVirt Node ISO). I'm also wondering about storage. I don't really like the idea of using local storage, but a single NFS server would also be a single point of failure, and Gluster would be too expensive to deploy, so at this point, I'm leaning towards using local storage. Any advice or clarity would be greatly appreciated. Thanks, David Sent with ProtonMail Secure Email.

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