oVirt Node's Future Regarding CentOS Stream
by eshwayri＠gmail.com
So I just finished migrating my 4.3 engine to 4.4 on a brand new RHvEL8 install; next step is to upgrade the hosts. When I first started with oVirt I used my own CentOS installs, but quickly decided that it made no sense for my use case. Now I am looking at upgrading from 4.3 to 4.4 and asking myself the same question. Up to now oVirt node has been using the same exact OS I would have used +/- a few extra packages, but with the traditional CentOS going away it really depends on what the new oVirt nodes are going to be based on. I have a feeling the answer to that question is CentOS Stream, which I don't feel comfortable with for this task. While I am sure the developers will test the combination before releasing a new node, they are still only testing whatever specific hardware combination they have. There could be numerous weird bugs that will only show up in certain situations. If Stream was as stable as an EL release, there wouldn't be EL releases. I also appreciate the fa
ct that oVirt is itself a work in progress, but the stable branch is considerably more like an EL release than a stream. Anyway, back to the point. Just want to confirm the future for node is stream before I go wasting time building my own EL8 hosts.
3 years
Is it possible to upgrade 3 node HCI from 4.3 to 4.4?
by Jayme
I have a fairly stock three node HCI setup running oVirt 4.3.9. The hosts
are oVirt node. I'm using GlusterFS storage for the self hosted engine and
for some VMs. I also have some other VMs running from an external NFS
storage domain.
Is it possible for me to upgrade this environment to 4.4 while keeping some
of the VMs on GlusterFS storage domains running? Does the upgrade require
an additional physical host? I'm reading through the upgrade guide and it's
not very clear to me how the engine is reinstalled on CentOS8. Do you need
a 4th host, or do you take one of the three existing hosts down, wipe it
and install ovirt node 4.4?
Would it be easier for me to just move all VMs to my NFS storage domain,
wipe all hosts and deploy a brand new 4.4 HCI cluster then import the NFS
storage domain? Will the 4.3 VMs on the NFS storage domain import/run
properly into the new 4.4 deployment or are there any other considerations?
3 years
Two selfhosted engines
by wilrikvdvliert＠hotmail.com
Dear forum,
If I understand correctly, I need shared storage for the self-hosted engine to make it highly available. But is it possible to create 2 self-hosted engines on 2 hosts and make it high available this way?
Kind regard
3 years
Introduction & general question about oVirt
by Nicolas Kovacs
Hi,
I'm a 53-year old Austrian living in Montpezat, a small village in South
France. I'm an IT professional with a focus on Linux and free software, and
I've been a Linux user since Slackware 7.1.
I'm doing web & mail hosting for myself and several small structures like our
local school and a handful of local companies. Up until recently these hostings
have happened on "bare metal" root servers using CentOS 7. One main server is
hosting most of the stuff: WordPress sites, one OwnCloud instance, Dolibarr
management software, GEPI learning platform, Postfix/Dovecot mail server,
Roundcube webmail, etc.
This setup has become increasingly problematic to manage, since applications
have more and more specific requirements, like different versions of PHP and
corresponding modules.
So I decided to split everything up nicely into a series of virtual machines,
each one with a nicely tailored setup.
I have a couple of sandbox servers, one public and one local, running Oracle
Linux 7 (a RHEL clone like CentOS). I played around with it, and KVM-based
virtualization already works quite nicely.
While looking for documentation, I stumbled over oVirt, which I didn't even
know existed until last week. Before I dive head first into it, I'd be curious
to know a few general things.
1. Would it be overkill for a small structure like mine?
2. Will I be able to do HA on a series of modest KVM-capable root servers even
if they are located in different datacenters across different countries?
3. One problem I couldn't resolve using a bone-headed keep-it-simple KVM setup
is backup. For my bare-metal servers I've been using incremental backups using
Rsnapshot for years. Here's a blog article I wrote on the subject:
https://blog.microlinux.fr/rsnapshot-centos-7/
Unfortunately I can't use this approach with huge QCOW images, at least not
without jumping through burning loops.
Is there an easy way to perform remote incremental backups with oVirt?
BTW, I took a peek at Proxmox and Ceph, but I admit I'm a die-hard RHEL-clone
user.
Cheers from the sunny South of France,
Niki
--
Microlinux - Solutions informatiques durables
7, place de l'église - 30730 Montpezat
Site : https://www.microlinux.fr
Blog : https://blog.microlinux.fr
Mail : info(a)microlinux.fr
Tél. : 04 66 63 10 32
Mob. : 06 51 80 12 12
3 years
Re: Upgrade from 4.3.5 to 4.3.10 HE Host issue
by Yedidyah Bar David
Hi,
On Mon, Mar 8, 2021 at 4:55 PM Marko Vrgotic <M.Vrgotic(a)activevideo.com> wrote:
>
> The broker log, these lines are pretty much repeating:
>
>
>
> MainThread::WARNING::2021-03-03 09:19:12,086::storage_broker::97::ovirt_hosted_engine_ha.broker.storage_broker.StorageBroker::(__init__) Can't connect vdsm storage: 'metadata_image_UUID can't be 'None'
Please compare the content of
/etc/ovirt-hosted-engine/hosted-engine.conf between all your hosts.
host id should be unique per host, but otherwise they should be
identical. If they are not, most likely there is some corruption
somewhere - in the engine db or shared storage.
You might want to skim this for a general rather-low-level overview:
https://www.ovirt.org/images/Hosted-Engine-4.3-deep-dive.pdf
Do you see no errors on your other hosts? In -ha logs?
Please also note that 4.3 is EOL. The deploy process was completely
rewritten in 4.4 (in ansible, previous was python), although should in
principle behave similarly - so if your data is corrupted, upgrade to
4.4 probably won't fix it.
Good luck and best regards,
>
> MainThread::INFO::2021-03-03 09:19:12,829::broker::47::ovirt_hosted_engine_ha.broker.broker.Broker::(run) ovirt-hosted-engine-ha broker 2.3.6 started
>
> MainThread::INFO::2021-03-03 09:19:12,829::monitor::40::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Searching for submonitors in /usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/broker/sub
>
> monitors
>
> MainThread::INFO::2021-03-03 09:19:12,829::monitor::49::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Loaded submonitor cpu-load
>
> MainThread::INFO::2021-03-03 09:19:12,832::monitor::49::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Loaded submonitor cpu-load-no-engine
>
> MainThread::INFO::2021-03-03 09:19:12,832::monitor::49::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Loaded submonitor engine-health
>
> MainThread::INFO::2021-03-03 09:19:12,832::monitor::49::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Loaded submonitor mem-free
>
> MainThread::INFO::2021-03-03 09:19:12,833::monitor::49::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Loaded submonitor mgmt-bridge
>
> MainThread::INFO::2021-03-03 09:19:12,833::monitor::49::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Loaded submonitor network
>
> MainThread::INFO::2021-03-03 09:19:12,833::monitor::49::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Loaded submonitor storage-domain
>
> MainThread::INFO::2021-03-03 09:19:12,833::monitor::49::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Loaded submonitor cpu-load
>
> MainThread::INFO::2021-03-03 09:19:12,834::monitor::49::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Loaded submonitor cpu-load-no-engine
>
> MainThread::INFO::2021-03-03 09:19:12,835::monitor::49::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Loaded submonitor engine-health
>
> MainThread::INFO::2021-03-03 09:19:12,835::monitor::49::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Loaded submonitor mem-free
>
> MainThread::INFO::2021-03-03 09:19:12,835::monitor::49::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Loaded submonitor mgmt-bridge
>
> MainThread::INFO::2021-03-03 09:19:12,835::monitor::49::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Loaded submonitor network
>
> MainThread::INFO::2021-03-03 09:19:12,836::monitor::49::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Loaded submonitor storage-domain
>
> MainThread::INFO::2021-03-03 09:19:12,836::monitor::50::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Finished loading submonitors
>
> MainThread::WARNING::2021-03-03 09:19:12,836::storage_broker::97::ovirt_hosted_engine_ha.broker.storage_broker.StorageBroker::(__init__) Can't connect vdsm storage: 'metadata_image_UUID can't be 'None'
>
> MainThread::INFO::2021-03-03 09:19:13,574::broker::47::ovirt_hosted_engine_ha.broker.broker.Broker::(run) ovirt-hosted-engine-ha broker 2.3.6 started
>
> MainThread::INFO::2021-03-03 09:19:13,575::monitor::40::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Searching for submonitors in /usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/broker/submonitors
>
> MainThread::INFO::2021-03-03 09:19:13,575::monitor::49::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Loaded submonitor cpu-load
>
> MainThread::INFO::2021-03-03 09:19:13,577::monitor::49::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Loaded submonitor cpu-load-no-engine
>
> MainThread::INFO::2021-03-03 09:19:13,578::monitor::49::ovirt_hosted_engine_ha.broker.monitor.Monitor::(_discover_submonitors) Loaded submonitor engine-health
>
>
>
>
>
>
>
> -----
>
> kind regards/met vriendelijke groeten
>
>
>
> Marko Vrgotic
> Sr. System Engineer @ System Administration
>
>
> ActiveVideo
>
> o: +31 (35) 6774131
>
> m: +31 (65) 5734174
>
> e: m.vrgotic(a)activevideo.com
> w: www.activevideo.com
>
>
>
> ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message.
>
>
>
>
>
>
>
> From: Marko Vrgotic <M.Vrgotic(a)activevideo.com>
> Date: Monday, 8 March 2021 at 15:34
> To: Yedidyah Bar David <didi(a)redhat.com>
> Cc: users(a)ovirt.org <users(a)ovirt.org>
> Subject: Re: [ovirt-users] Re: Upgrade from 4.3.5 to 4.3.10 HE Host issue
>
> Hi Didi,
>
>
>
> Please find the attached logs from Host and Engine.
>
>
>
> Host ovirt-sj-02 HE Undeploy 2021-03-08 14:15:52 till 2021-03-08 14:18:24
>
>
>
>
>
> Host ovirt-sj-02 HE Deploy 2021-03-08 14:20:51 till 2021-03-08 14:23:22
>
>
>
> I do see errors in the agent and broker and vdsm, but I do not see why it happened.
>
>
>
> Thank you for helping, let me know if any additional files are needed.
>
>
>
>
>
> -----
>
> kind regards/met vriendelijke groeten
>
>
>
> Marko Vrgotic
> Sr. System Engineer @ System Administration
>
>
> ActiveVideo
>
> o: +31 (35) 6774131
>
> m: +31 (65) 5734174
>
> e: m.vrgotic(a)activevideo.com
> w: www.activevideo.com
>
>
>
> ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message.
>
>
>
>
>
>
>
> From: Yedidyah Bar David <didi(a)redhat.com>
> Date: Monday, 8 March 2021 at 09:25
> To: Marko Vrgotic <M.Vrgotic(a)activevideo.com>
> Cc: users(a)ovirt.org <users(a)ovirt.org>
> Subject: Re: [ovirt-users] Re: Upgrade from 4.3.5 to 4.3.10 HE Host issue
>
> ***CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender!!!***
>
> Hi,
>
> On Mon, Mar 8, 2021 at 10:13 AM Marko Vrgotic <M.Vrgotic(a)activevideo.com> wrote:
> >
> > I cannot find the reason why the re-Deployment on this Hosts fails, as it was already deployed on it before.
> >
> > No errors, found int the deployment, but it seems half done, based on messages I sent in previous email.
>
> Please check/share all relevant logs. Thanks. Can be all of /var/log
> from engine and hosts, and at least:
>
> /var/log/ovirt-engine/engine.log
>
> /var/log/vdsm/*
>
> /var/log/ovirt-hosted-engine-ha/*
>
> Best regards,
> --
> Didi
--
Didi
3 years
oVirt 4.4.4 not dislaying Sign-on Screen
by louisb＠ameritech.net
I recently installed oVirt 4.4.4, everything appeared to run successfully, however, I’m unable to get the sign-on screen to display on my RHEL 8.3 machine. I did do an install using the remote database installation. I encountered no issue with the install, I can see the “engine” and “ovirt_engine_history” in PostgreSQL 13.3. The tables and table spaces have all been created as designed by the installation process.
When I enter the URL that was displayed once the installation completed I get the following information displayed on the screen:
Internal Error
I’ve tried using the port 443 and port 80 URL and get the same results. The URL are as follows:
http://WorkstationName:80/ovirt-engine
https://WorkstationName:443/ovirt-engine
For three days I’ve been trying to locate logs that will help me located and resolve the problem, but so far I’ve had no luck.
Can anyone tell where I should start looking to resolve my issue? I’ve checked several system logs and logs for Apache with luck. What should I be looking for within the logs? What logs should I be looking at?
I don’t believe my issue is with the back-end database, I thinks its something with Apache not being able to find the web pages to display. How can I start to investigate my problem an develop a solution?
My Linux/RHEL 8.3 OS has all of the latest patches and fixes applied.
Thanks
3 years
4.4 -> 4.3
by KSNull Zero
Hi,
What is the most simpliest way to backward migrate VMs from oVirt 4.4 to oVirt 4.3 ?
Is it possible to use export domain or there are some other ways ?
Thank you.
3 years
Accidentally changed VM Assigned Bridge for Hosted-Engine
by phunyguy＠neverserio.us
Hello, exactly as the title suggests, I did something stupid, and I am not sure how to fix this. I also cannot be certain that this was the exact cause of the problem, as I was troubleshooting another issue with a different VM refusing to start.
What I did by accident, was selected the hosted-engine VM, rather than the VM I was attempting to troubleshoot, and changed the assigned network of the VM adapter to something else, and of course, lost connectivity to the engine VM. This caused HA to kick in and restart the engine, however, like the other VM, it is now refusing to start.
Can anyone give me any pointers? agent/broker/vdsm.log are not showing anything useful that I can see. Thanks in advance.
-phunyguy
3 years
