Removed FC LUN causes multipath to spam syslog
by Juhani Rautiainen
Hi!
We are running ovirt 4.3.10 and we are migrating from 3PAR to Dell SC.
I've managed to transfer disks from one LUN away and removed it (put
it in maintenanced, detached it and removed it). Now multipath seems
to spam the logs for missing disks. How can I stop this?
Mar 5 09:58:58 ovirt01 multipathd: 360002ac00000000000000272000057b9:
sdr - tur checker reports path is down
Mar 5 09:58:59 ovirt01 multipathd: 360002ac00000000000000272000057b9:
sdh - tur checker reports path is down
And so on. Any idea how I can quiet this? And why didn't oVirt do this
automatically?
Thanks,
Juhani
3 years, 1 month
Re: EL7 Host support in 4.4.x
by Nir Soffer
On Thu, Mar 4, 2021 at 6:06 PM Vrgotic, Marko <M.Vrgotic(a)activevideo.com>
wrote:
> Hi oVirt,
>
>
>
> After reviewing the https://access.redhat.com/articles/973163
>
> I wonder is it possible to have a Host running EL7, in oVirt 4.4 to
> support ability to still run OSs like Win 2008R2, or is it a hard NO?
>
Theoretically vdsm can run on EL7 if you install python3, but without
libvirt
and qemu versions required in 4.4 it will not be very useful.
If you need EL7, use ovirt 4.3.
Nir
3 years, 1 month
Create update and security plan
by Gilson Schmidt
Hi
We have a large hypervisors park, and now we are starting to adopt oVirt.
And I need an update and security plan for oVirt Nodes.
I need to know:
- What is the update cycle for oVirt?
- How large companies treat the security of oVirt Node.
What is the frequency of updates;
Is an additional service enabled / installed on oVirt Node?
Is SSH enabled maintained?
What is the sysadmin access format? Currently on other hypervisors (Xen) using Vault, or we disable SSH on ESXi.
How do large companies configure oVirt to comply with the needs passed on by the Security Team?
Tks very much.
3 years, 1 month
Difference between edit cluster and upgrade?
by Gianluca Cecchi
Hello,
supposing I upgrade my env from 4.3 to 4.4.
Then I can update my clusters' compatibility from 4.3 to 4.5.
I can do it in two ways:
1) select cluster line, "edit" button and change "Compatibility Version"
from 4.3 to 4.5
2) select cluster line, "upgrade" button
correct?
What is the difference?
Thanks,
Gianluca
3 years, 1 month
[ANN] oVirt 4.4.5 Eighth Release Candidate is now available for testing
by Lev Veyde
oVirt 4.4.5 Eighth Release Candidate is now available for testing
The oVirt Project is pleased to announce the availability of oVirt 4.4.5
Eighth Release Candidate for testing, as of March 4th, 2021.
This update is the fifth in a series of stabilization updates to the 4.4
series.
How to prevent hosts entering emergency mode after upgrade from oVirt 4.4.1
Note: Upgrading from 4.4.2 GA or later should not require re-doing these
steps, if already performed while upgrading from 4.4.1 to 4.4.2 GA. These
are only required to be done once.
Due to Bug 1837864 <https://bugzilla.redhat.com/show_bug.cgi?id=1837864> -
Host enter emergency mode after upgrading to latest build
If you have your root file system on a multipath device on your hosts you
should be aware that after upgrading from 4.4.1 to 4.4.5 you may get your
host entering emergency mode.
In order to prevent this be sure to upgrade oVirt Engine first, then on
your hosts:
1.
Remove the current lvm filter while still on 4.4.1, or in emergency mode
(if rebooted).
2.
Reboot.
3.
Upgrade to 4.4.5 (redeploy in case of already being on 4.4.5).
4.
Run vdsm-tool config-lvm-filter to confirm there is a new filter in
place.
5.
Only if not using oVirt Node:
- run "dracut --force --add multipath” to rebuild initramfs with the
correct filter configuration
6.
Reboot.
Documentation
-
If you want to try oVirt as quickly as possible, follow the instructions
on the Download <https://ovirt.org/download/> page.
-
For complete installation, administration, and usage instructions, see
the oVirt Documentation <https://ovirt.org/documentation/>.
-
For upgrading from a previous version, see the oVirt Upgrade Guide
<https://ovirt.org/documentation/upgrade_guide/>.
-
For a general overview of oVirt, see About oVirt
<https://ovirt.org/community/about.html>.
Important notes before you try it
Please note this is a pre-release build.
The oVirt Project makes no guarantees as to its suitability or usefulness.
This pre-release must not be used in production.
Installation instructions
For installation instructions and additional information please refer to:
https://ovirt.org/documentation/
This release is available now on x86_64 architecture for:
* Red Hat Enterprise Linux 8.3 or newer
* CentOS Linux (or similar) 8.3 or newer
This release supports Hypervisor Hosts on x86_64 and ppc64le architectures
for:
* Red Hat Enterprise Linux 8.3 or newer
* CentOS Linux (or similar) 8.3 or newer
* oVirt Node 4.4 based on CentOS Linux 8.3 (available for x86_64 only)
See the release notes [1] for installation instructions and a list of new
features and bugs fixed.
Notes:
- oVirt Appliance is already available for CentOS Linux 8
- oVirt Node NG is already available for CentOS Linux 8
- We found a few issues while testing on CentOS Stream so we are still
basing oVirt 4.4.5 Node and Appliance on CentOS Linux.
Additional Resources:
* Read more about the oVirt 4.4.5 release highlights:
http://www.ovirt.org/release/4.4.5/
* Get more oVirt project updates on Twitter: https://twitter.com/ovirt
* Check out the latest project news on the oVirt blog:
http://www.ovirt.org/blog/
[1] http://www.ovirt.org/release/4.4.5/
[2] http://resources.ovirt.org/pub/ovirt-4.4-pre/iso/
--
Lev Veyde
Senior Software Engineer, RHCE | RHCVA | MCITP
Red Hat Israel
<https://www.redhat.com>
lev(a)redhat.com | lveyde(a)redhat.com
<https://red.ht/sig>
TRIED. TESTED. TRUSTED. <https://redhat.com/trusted>
3 years, 1 month
EL7 Host support in 4.4.x
by Vrgotic, Marko
Hi oVirt,
After reviewing the https://access.redhat.com/articles/973163
I wonder is it possible to have a Host running EL7, in oVirt 4.4 to support ability to still run OSs like Win 2008R2, or is it a hard NO?
-----
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<mailto:m.vrgotic@activevideo.com>
w: www.activevideo.com<http://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.
3 years, 1 month
Manager login error
by Moses Mbugua
have tried to resolve this error " Keystore was tampered with, or password was incorrect" but am not able. This has rendered my virtualization manager unusable. This means I can access one of my hosts which has vms l down. any one who has ever faced similar issues? i rarely access it thus mostly an update issue since i can't remember changing anything .redhat virtualization version 4.2.8.9-0.1.el7ev. able to help? ping me we discuss
3 years, 1 month
What happens in loss of network scenarios?
by David White
I tested oVirt (4.3? I can't remember) last fall on a single host (hyperconverged).
Now, I'm getting ready to deploy to a 3 physical node (possibly 4) hyperconverged cluster, and I guess I'll go ahead and go with 4.4.
Although Red Hat's recent shift of CentOS 8 to the Stream model, as well as the announcement that RHV is going away makes me nervous. I really don't see any other virtualization software doing quite the same stuff as oVirt at the moment.
One of my questions is around the back end out-of-band network for data replication.
What happens if all 3 servers are healthy and the normal network is fine for serving traffic to the VM consumers, but the switching network for data replication goes down? Is it possible to configure oVirt to "fail over" to the front-end network?I'm also wondering if its possible to do away with a switch all together, and just link the physical hosts together directly (like a cross-over cable) for the data replication.
I'm also wondering what would happen in the following scenario:
- All 3 servers are healthy
- The out-of-band data replication network is healthy
- 1 or 2 of the servers suddenly lost network connectivity on the front-end network
What then? Would everything just keep working, and network traffic be forced to go out the healthy interface(s) on the remaining hosts?
Sent with ProtonMail Secure Email.
3 years, 1 month
Cloud-init confusion
by Shantur Rathore
Hi Users,
I am new to oVirt and having some confusion with cloud-init.
I have a VM which supports Cloud Init and when I enable Cloud Init under
Initial boot settings of VM, the cloud-init config disk isn't attached to
the VM.
If I use Run-Once and enable Cloud-Init the config disk is attached to the
VM and works as expected.
Is cloud-init only supposed to work with Run-Once or am I missing something?
Thanks in advance.
Shantur
3 years, 1 month
