May 2020 - Users - oVirt List Archives

Re: 503 Service Unavailable
by Yedidyah Bar David 12 May '20

12 May '20

On Tue, May 12, 2020 at 9:53 AM Anton Louw via Users <users(a)ovirt.org> wrote: > > > > Hi All, > > > > So due to some bad decisions etc. I have accidently removed the hosted engine setup by running engine-cleanup. I initially just wanted to remove the websocket proxy, and as advised by an article, this can be done by running engine-cleanup. Obviously this was not the case, and it removed everything. Not necessarily everything, but even if you ask to remove only something specific, it does more than that. We recently decided this is too risky and removed that question: https://bugzilla.redhat.com/show_bug.cgi?id=1792874 > > > > I at least had a backup that I took, so I restored the backup to the engine, and ran engine-setup. Everything runs fine, but when I try and access the webUI, I get an error: “503 Service Unavailable” “No server is available to handle this request” > > > > I have checked the ovirt-engine service, and it is running, as well as the httpd service. > > > > I have also attached the engine log as well as the server log. 1. When attaching complete logs (thanks for that!), please state the exact time you tried to do something that failed (access the web ui, in this case). Your attached logs have several different ERRORs, which might be due to unrelated things, and it's hard to tell where to look first. Once found, going backwards to try to find the root cause is usually easier. 2. Please check/share also httpd logs, and also /etc/httpd/conf.d - you can compare it with a fresh engine you can setup on some test vm somewhere, it should be mostly the same. 3. Also please check/share engine-setup logs, at /var/log/ovirt-engine/setup. You can search there for httpd or apache. 4. I have a feeling, just a guess, that you are missing /etc/httpd/conf.d/z-ovirt-engine-proxy.conf . Not sure what might have caused that. setup after cleanup should have created it. Best regards, > > > > Does anybody have any idea where I can check, or perhaps I missed something. > > > > Thank you > > > 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 > A: Rutherford Estate, 1 Scott Street, Waverley, Johannesburg > www.vox.co.za > > > > > > > > > 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. > > > > _______________________________________________ > 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/FDUEFMIUCOMC4… -- Didi

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503 Service Unavailable
by Anton Louw 12 May '20

12 May '20

Hi All, So due to some bad decisions etc. I have accidently removed the hosted engine setup by running engine-cleanup. I initially just wanted to remove the websocket proxy, and as advised by an article, this can be done by running engine-cleanup. Obviously this was not the case, and it removed everything. I at least had a backup that I took, so I restored the backup to the engine, and ran engine-setup. Everything runs fine, but when I try and access the webUI, I get an error: "503 Service Unavailable" "No server is available to handle this request" I have checked the ovirt-engine service, and it is running, as well as the httpd service. I have also attached the engine log as well as the server log. Does anybody have any idea where I can check, or perhaps I missed something. Thank you 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

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oVirt engine / node & snmp
by Andrei Verovski 12 May '20

12 May '20

Hi, oVirt node seems to run snmp by defeult, “service snmpd status” returns some data. I’m going to connect all servers to LibreNMS, and it requires custom snmp options. What options I should keep in oVirt node default nsmp.conf? Or I may just fully overwrite this file with my own? Please note my oVirt node installed manually on CentOS, I don’t use node DVD image from oVirt project. with best regards Thanks in advance. Andrei

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Upgrade scenario to 4.4 for HCI Gluster
by Gianluca Cecchi 11 May '20

11 May '20

Hello, I saw from some mails in the list that the approach for upgrading from 4.3 to 4.4 will be similar to the 3.6 => 4.0 one. Reading the RHV 4.0 Self Hosted Engine Guide it seems it was necessary to have a second host, going through this: 5.4. Upgrading a RHEV-H-Based Self-Hosted Engine Environment https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.0/ht… and also https://www.ovirt.org/develop/release-management/features/sla/hosted-engine… upgrade process involved: - set global ha maintenance - install a new host (and set it as on hosted engine one) - migrate engine VM to this host and set the host as the SPM - create a backup with engine-backup, verify its contents and copy to the host in some directory - run the upgrade utility on the host to update the engine VM hosted-engine --upgrade-appliance this will create a backup floating disk of the engine vm disk for rollback purposes and override the existing engine disk with a new one where to deploy the new engine version applying also the restore from the engine-backup --> what are requirements for 4.4 engine VM and so free storage to have on engine storage domain? The engine-setup will be automatically executed on the new version engine VM - exit from global maintenance - update remaining hosts Is the above procedure the correct one that I can test on a 4.3.9 lab? The 3.6 -> 4.0 flow implied that a 4.0 host could run a 3.6 engine VM Because the backup disk operation is done by the current running engine itself. So it should be true also for 4.3 -> 4.4 and a 4.4. host should be able to run a 4.3 engine, correct? In case of single 4.3.9 ovirt-node-ng host HCI with Gluster, can I apply the upgrade in a similar way? Something like: - create engine-backup and copy over to the host - put host into global maintenace - shutdown all VMS, engine included - enable 4.4. repo - install new image-base 4.4 is this correct and I can use 4.3 and 4.4 image base versions or do I have to sort-of-scratch necessarily? because 4.3 host is based on el7 while 4.4 on el8... but perhaps on mage based system I have flexibility..? what version of gluster will it be applied? Incompatibilities with the current 4.3.9 one (version 6.8-1.el7) - reboot host - exit global maintenance and wait for engine vm to come up correctly - enter global maintenance again - run the upgrade utility on the host Or do I need at least temporarily a new server to use as the 4.4. host, or what will be the expected path? Thanks, Gianluca

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ovirt 4.4 on Fedora 30
by kelley bryan 09 May '20

09 May '20

Hello everyone new test of 4.4 on Fedora 30: Prepare Vm fails with {"attempts": 10, "changed": false, "cmd": "dnf install -y python2-dnf", "msg": "Could not import the dnf python module using /usr/bin/python (2.7.18 (default, Apr 21 2020, 18:49:31) [GCC 9.3.1 20200408 (Red Hat 9.3.1-2)]). Please install `python2-dnf` package or ensure you have specified the correct ansible_python_interpreter.", "rc": 1, "results": [], "stderr": "Error: Unable to find a match: python2-dnf\n", "stderr_lines": ["Error: Unable to find a match: python2-dnf"], "stdout": "Last metadata expiration check: 2:38:48 ago on Fri 08 May 2020 12:16:25 PM MST.\nNo match for argument: python2-dnf\n", "stdout_lines": ["Last metadata expiration check: 2:38:48 ago on Fri 08 May 2020 12:16:25 PM MST.", "No match for argument: python2-dnf"]} Is this due to Fedora 30 being based on RH7?

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ovirt 4.4 RC1 HCI single host problem unknown CPU feature: tsx-ctrl
by Gianluca Cecchi 08 May '20

08 May '20

Hello, I have this problem I posted for beta4 also with the RC1 installation: https://lists.ovirt.org/archives/list/users@ovirt.org/message/CR6XYIEYHT4N7… At final stage when engine VM has to start from hosted engine storage domain libvirt.libvirtError: unsupported configuration: unknown CPU feature: tsx-ctrl 2020-05-08 17:13:51,080+0200 INFO (vm/7194f9ff) [virt.vm] (vmId='7194f9ff-1d73-4a0d-987e-3e82060c2d99') Changed state to Down: unsupported configuration: unknown CPU feature: tsx-ctrl (code=1) (vm:1629) any hint on how to workaround and test on my nested environment? Thanks, Gianluca

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centos 8 stream status
by Nathanaël Blanchet 08 May '20

08 May '20

Hello, Centos 8 stream should be the preview of centos 8, so why not using right now it instead of waiting GA 8.2? -- Nathanaël Blanchet Supervision réseau SIRE 227 avenue Professeur-Jean-Louis-Viala 34193 MONTPELLIER CEDEX 5 Tél. 33 (0)4 67 54 84 55 Fax 33 (0)4 67 54 84 14 blanchet(a)abes.fr

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Creating an Isolated/External Network
by dsullivan56＠fordham.edu 08 May '20

08 May '20

Hi all, Obligatory I'm not sure if this is the right place to post and obligatory I am very new here. I could really use some help. I'd like to build an isolated/external network so that I can build two VMs that need to interact with each other and each other alone while they are being built. I'd like to protect them from interacting with other VMs I have and I'd like to protect my other VMs from interacting with them. I attempt to create this network by going to Network > Networks > New, and I make sure to click the "create on external provider" checkbox and select "Disabled" under the "Network Port Security" drop-down menu. When I click "ok" I get the error message: "Error while executing this action: User is not authorized to perform this action". This isn't an issue, I just went to the super user and had him try the same thing, and he gets this error message: "Error while executing action AddNetworkOnProvider: Failed to communicate with the external provider, see logs for additional details". The oVirt log wasn't that helpful, as it just told me the time oVirt failed to create the network. Neither my super user nor I can figure out why this is happening. Would greatly appreciate any advice you can give me. Thanks!

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Proxy setup for image repositories
by Gianluca Cecchi 08 May '20

08 May '20

Eg, for the default ovirt-image-repository storage domain, is it possible to setup a proxy server for access? Thanks Gianluca

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ERROR [org.ovirt.engine.core.bll.hostdeploy.AddVdsCommand]
by Николаев Алексей 08 May '20

08 May '20

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