[ANN] oVirt 4.4.3 First Release Candidate is now available for testing
by Lev Veyde
oVirt 4.4.3 First Release Candidate is now available for testing
The oVirt Project is pleased to announce the availability of oVirt 4.4.3
First Release Candidate for testing, as of September 17th, 2020.
This update is the third in a series of stabilization updates to the 4.4
series.
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 8.2 or newer
* CentOS Linux (or similar) 8.2 or newer
This release supports Hypervisor Hosts on x86_64 and ppc64le architectures
for:
* Red Hat Enterprise Linux 8.2 or newer
* CentOS Linux (or similar) 8.2 or newer
* oVirt Node 4.4 based on CentOS Linux 8.2 (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 will be available soon for CentOS Linux 8
Additional Resources:
* Read more about the oVirt 4.4.3 release highlights:
http://www.ovirt.org/release/4.4.3/
* 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/4.4.3/
[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>
4 years, 2 months
UPN suffix and my SAM account do not have the sames domains
by dominique.deschenes＠gcgenicom.com
I have a SSO authentication question.
In my Active Directory, my UPN suffix login and my SAM account do not have the sames domains.
Example :
UPN : dominique.test(a)abc.com
Sam account : domtest(a)local.lan
On the VM portal, I am able to connect with dominique.test(a)abc.com but not with domtest(a)local.lan (I have the following message:server_error: Cannot resolve principal 'domtest(a)local.lan'
If I connect to the VM PORTAL with dominique.test(a)abc.com, when I click on "RDP Console" to get the link, the login of the RDP is dominique.test(a)local.lan. So I have to manually change the login to dominique.test(a)abc.com.
Is it possible to use the Sam account domtes(a)local.lan instead of the UPN ?
if not, is it possible to adjust the consol.rdp configuration and include the domain abc.com instead of local.lan ?
In research I found this, but I don't have access.
How to authenticate with Active directory when UPN suffix and Forest Name are different using AAA LDAP extension - Red Hat C
https://access.redhat.com/solutions/2332561
Thank you
4 years, 2 months
Re: Random hosts disconnects
by Anton Louw
Hi Everybody,
Did some digging around, and saw a few things regarding “vdsHeartbeatInSeconds”
I had a look at the properties file located at /etc/ovirt-engine/engine-config/engine-config.properties, and do not see an entry for “vdsHeartbeatInSeconds.type=Integer”.
Seeing as these data centers are geographically split, could the “vdsHeartbeatInSeconds” potentially be the issue? Is it safe to increase this value after I add “vdsHeartbeatInSeconds.type=Integer” into my engine-config.properties file?
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 via Users <users(a)ovirt.org>
Sent: 16 September 2020 09:01
To: users(a)ovirt.org
Subject: [ovirt-users] Random hosts disconnects
Hi All,
I have a strange issue in my oVirt environment. I currently have a standalone manager which is running in VMware. In my oVirt environment, I have two Data Centers. The manager is currently sitting on the same subnet as DC1. Randomly, hosts in DC2 will say “Not Responding” and then 2 seconds later, the hosts will activate again.
The strange thing is, when the manager was sitting on the same subnet as DC2, hosts in DC1 will randomly say “Not Responding”
I have tried going through the logs, but I cannot see anything out of the ordinary regarding why the hosts would drop connection. I have attached the engine.log for anybody that would like to do a spot check.
Thanks
Anton Louw
Cloud Engineer: Storage and Virtualization at Vox
________________________________
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4 years, 2 months
Ovirt legacy migration policy is missing
by ovirtand-cnj342＠yahoo.com
Hello,
We have many cases of failed migrations, and reducing the load on the respective VMs made migration possible. Using "Suspend workload when needed" did not help either with the migrations, which only worked when stopping services on the VMs, thus reducing load.
I was therefore trying to tweak the migration downtime setting. The suggested way of doing this is by using the Legacy migration policy.
That being said, I am unable to find the Legacy migration policy in the VM Host tab, nor in the cluster's "Migration policy" tab. I cannot find any mention of it being left out of our current version (4.3.6.1) - moreover, the setting "Use custom migration downtime" (only available when using the Legacy migration policy) does exist in the interface - but I cannot find the Legacy policy itself.
The only policies present are Minimal downtime (default for cluster), Post-copy migration and Suspend workload when needed.
Is there a way to make the Legacy migration policy available if it's missing?
Thanks!
Best regards,
Andy
PS. Setting DefaultMaximumMigrationDowntime=20000 as default did not have any effect, presumably because the system uses one of the 3 pre-defined policies and ignores the "default"
4 years, 2 months
Low Performance (KVM Vs VMware Hypervisor) When running multi-process application
by Ravin Ya
Hello Everyone,
Please advice. Any help will be highly appreciated. Thank you in advance.
Test Setup:
oVirt Centos 7.8 Virtulization Host
Guest VM Centos 7.8 (Mutiqueue enabled 6 vCPUs with 6 Rx Tx Queues)
The vCPUs are configured for host pass through (Pinned CPU).
The Guest VM runs the application in userspace. The Application consists of the parent process that reads packets in raw socket mode from the interface and forwards then to child processes (~vCPUs) via IPC (shared memory – pipes). The performance (throughput / CPU utilization) that I get with KVM is half of what I get with VMware.
Any thoughts on the below observations? Any suggestions?
KVM Guest VMs degraded performance when running multi-process applications.
High FUTEX time (Seen on the Guest VM when passing traffic).
High SY: System CPU time spent in kernel space (Seen on both Hypervisor and the Guest VMs only when running my application.)
-Rav Ya
4 years, 2 months
cpu QoS doesn't work
by pub.virtualization＠gmail.com
Hello,
I set cpu QoS as 10 and applied it to VM on oVirt 4.2, but it doesn't seem to work.
compared to VM without QoS, there wasn't any difference in cpu usage.
Also, there wasn't any <period>...</period> or <quota>...</quota> field related to QoS in libvirt file.
is it right result??
Thanks,
4 years, 2 months
Unable to create a node in oVirt 4.0
by Rodrigo G. López
Hi there,
We are trying to setup a node in the same machine where we are running
the engine, and noticed that the vdsmd service fails because the
supervdsmd daemon can't authenticate against libvirtd afaict.
The error is the following on supervdsmd:
daemonAdapter[17803]: libvirt: XML-RPC error : authentication
failed: authentication failed
...
and in libvirtd:
Sep 15 03:34:18 ovirt-test libvirtd[17775]: 2020-09-15
07:34:18.410+0000: 17775: error : virNetSocketReadWire:1806 : End of
file while reading data: Input/output error
Sep 15 03:34:18 ovirt-test libvirtd[17775]: 2020-09-15
07:34:18.612+0000: 17776: error : virNetSASLSessionListMechanisms:393 :
internal error: cannot list SASL mechanisms -4 (SASL(-4): no mechanism
available: Internal Error -4 in server.c near line 1757)
Sep 15 03:34:18 ovirt-test libvirtd[17775]: 2020-09-15
07:34:18.612+0000: 17776: error : remoteDispatchAuthSaslInit:3440 :
authentication failed: authentication failed
Sep 15 03:34:18 ovirt-test libvirtd[17775]: 2020-09-15
07:34:18.612+0000: 17775: error : virNetSocketReadWire:1806 : End of
file while reading data: Input/output error
Sep 15 03:34:18 ovirt-test libvirtd[17775]: 2020-09-15
07:34:18.814+0000: 17778: error : virNetSASLSessionListMechanisms:393 :
internal error: cannot list SASL mechanisms -4 (SASL(-4): no mechanism
available: Internal Error -4 in server.c near line 1757)
Sep 15 03:34:18 ovirt-test libvirtd[17775]: 2020-09-15
07:34:18.814+0000: 17778: error : remoteDispatchAuthSaslInit:3440 :
authentication failed: authentication failed
Sep 15 03:34:18 ovirt-test libvirtd[17775]: 2020-09-15
07:34:18.815+0000: 17775: error : virNetSocketReadWire:1806 : End of
file while reading data: Input/output error
Sep 15 03:34:19 ovirt-test libvirtd[17775]: 2020-09-15
07:34:19.017+0000: 17780: error : virNetSASLSessionListMechanisms:393 :
internal error: cannot list SASL mechanisms -4 (SASL(-4): no mechanism
available: Internal Error -4 in server.c near line 1757)
Sep 15 03:34:19 ovirt-test libvirtd[17775]: 2020-09-15
07:34:19.017+0000: 17780: error : remoteDispatchAuthSaslInit:3440 :
authentication failed: authentication failed
Sep 15 03:34:19 ovirt-test libvirtd[17775]: 2020-09-15
07:34:19.020+0000: 17775: error : virNetSocketReadWire:1806 : End of
file while reading data: Input/output error
Is there any way to work around that?
We have working infra on top of 4.0 in CentOS 7 systems, and we would
like to replicate the exact same environment for availability purposes,
in case anything bad happened.
Best regards,
-rodri
4 years, 2 months
Removal of deprecated init-scripts (network-scripts)
by Ales Musil
Hello,
network-scripts for host networking were deprecated since oVirt 4.4.
It will be removed completely in the 4.4.3 release. There is no action
required
for setups that did not change the configuration to use network-scripts
backend (net_nmstate_enabled = false).
Users that did disable nmstate should redeploy all affected hosts before
4.4.3.
Also can you please tell us what was the reason to use network-scripts, if
that is the case?
Thank you.
Best regards,
Ales Musil
--
Ales Musil
Software Engineer - RHV Network
Red Hat EMEA <https://www.redhat.com>
amusil(a)redhat.com IM: amusil
<https://red.ht/sig>
4 years, 2 months
Random hosts disconnects
by Anton Louw
Hi All,
I have a strange issue in my oVirt environment. I currently have a standalone manager which is running in VMware. In my oVirt environment, I have two Data Centers. The manager is currently sitting on the same subnet as DC1. Randomly, hosts in DC2 will say "Not Responding" and then 2 seconds later, the hosts will activate again.
The strange thing is, when the manager was sitting on the same subnet as DC2, hosts in DC1 will randomly say "Not Responding"
I have tried going through the logs, but I cannot see anything out of the ordinary regarding why the hosts would drop connection. I have attached the engine.log for anybody that would like to do a spot check.
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
4 years, 2 months
Enable a cluster node to run the hosted engine
by rap＠isogmbh.de
Hi there,
currently my team is evaluating oVirt and we're also testing several fail scenarios, backup and so on.
One scenario was:
- hyperconverged oVirt cluster with 3 nodes
- self-hosted engine
- simulate the break down of one of the nodes by power off
- to replace it make a clean install of a new node and reintegrate it in the cluster
Actually everything worked out fine. The new installed node and related bricks (vmstore, data, engine) were added to the existing Gluster storage and it was added to the oVirt cluster (as host).
But there's one remaining problem: The new host doesn't have the grey crown, which means it's unable to run the hosted engine. How can I achieve that?
I also found out that the ovirt-ha-agent and ovirt-ha-broker isn't started/enabled on that node. Reason is that the /etc/ovirt-hosted-engine/hosted-engine.conf doesn't exist. I guess this is not only a problem concerning the hosted engine, but also for HA VM's.
Thank you for any advice and greetings,
Marcus
4 years, 2 months
