[ovirt-users] How do you oVirt? Here the answers!

[Sandro Bonazzola]

Hi,
a few weeks ago I opened a survey asking oVirt users about how they use
oVirt.
Here are the analytics of the survey:
https://docs.google.com/forms/d/1s3k4pq_U4vHTuUUKr6dOosGj_EGFxqEisansHlqnyyM/viewanalytics#responses

Most notable facts:
- 197 responses, two times the responses we got with the 3.6 survey!
- CentOS confims as the most used distribution for running oVirt engine
(89.8%) and Hypervisors (74.3% which become 94.2% including oVirt Node
which is a CentOS spin)
- Fedora is the second distribution (4.6%) mostly used only for runnig
oVirt engine
- oVirt Node jumped from 7.1% on 3.6 survey to 19.9% in 4.1!
- Surprisingly we have someone running both engine and hypervisor on Ubuntu
based system, within VMs. I'd like to hear more about this use case.
- Within other OS we had Red Hat Enterprise Linux 6 and 7 and Scientific
Linux (I guess 7, wasn't specified)
- Within the storage, there isn't a "winner" between NFS, Gluster and
iSCSI. Within Other Storage, Fiber Channel is the most used. We had also:
Ceph, DAS, EMC ScaleIO, GPFS
- Hosted Engine is the most used deployment choice with 58.4% (was 50.0% in
3.6)
- 65.8% of Hosted Engine users use it in Hyperconverged setup.

Thank you for your feedback and appreciation, we'll look into suggestions
you sent in the survey.

-- 

SANDRO BONAZZOLA

ASSOCIATE MANAGER, SOFTWARE ENGINEERING, EMEA ENG VIRTUALIZATION R&D

Red Hat EMEA 

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Re: [ovirt-users] How do you oVirt? Here the answers!

[Yura Poltoratskiy]

Hi,

On 14.04.2017 11:27, Sandro Bonazzola wrote:

- Within the storage, there isn't a "winner" between NFS, Gluster and
iSCSI. Within Other Storage, Fiber Channel is the most used. We had
also: Ceph, DAS, EMC ScaleIO, GPFS


> EMC ScaleIO
There would be interesting to know in which way. I've done a google 
search about oVirt+ScaleIO - just a few thread about.




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Red Hat EMEA 

  
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Re: [ovirt-users] How do you oVirt? Here the answers!

[Pavel Gashev]

If 58.4% use Hosted Engine, and 65.8% of them use it in Hyperconverged setup, 
then at least 38.4% of all users have Hyperconverged setup, but only 25.9% use 
Gluster.
What is Hyperconverged setup in at least 12.5% of all cases?


From:  on behalf of Sandro Bonazzola 

Date: Friday, 14 April 2017 at 11:27
To: users , devel , Karanbir Singh 
, Brian Stinson , Johnny Hughes 
, Niels de Vos , Sahina Bose 

Subject: [ovirt-users] How do you oVirt? Here the answers!

Hi,
a few weeks ago I opened a survey asking oVirt users about how they use oVirt.
Here are the analytics of the survey:
https://docs.google.com/forms/d/1s3k4pq_U4vHTuUUKr6dOosGj_EGFxqEisansHlqnyyM/viewanalytics#responses

Most notable facts:
- 197 responses, two times the responses we got with the 3.6 survey!
- CentOS confims as the most used distribution for running oVirt engine (89.8%) 
and Hypervisors (74.3% which become 94.2% including oVirt Node which is a 
CentOS spin)
- Fedora is the second distribution (4.6%) mostly used only for runnig oVirt 
engine
- oVirt Node jumped from 7.1% on 3.6 survey to 19.9% in 4.1!
- Surprisingly we have someone running both engine and hypervisor on Ubuntu 
based system, within VMs. I'd like to hear more about this use case.
- Within other OS we had Red Hat Enterprise Linux 6 and 7 and Scientific Linux 
(I guess 7, wasn't specified)
- Within the storage, there isn't a "winner" between NFS, Gluster and iSCSI. 
Within Other Storage, Fiber Channel is the most used. We had also: Ceph, DAS, 
EMC ScaleIO, GPFS
- Hosted Engine is the most used deployment choice with 58.4% (was 50.0% in 3.6)
- 65.8% of Hosted Engine users use it in Hyperconverged setup.

Thank you for your feedback and appreciation, we'll look into suggestions you 
sent in the survey.

--

SANDRO BONAZZOLA

ASSOCIATE MANAGER, SOFTWARE ENGINEERING, EMEA ENG VIRTUALIZATION R&D

Red Hat EMEA
[https://www.redhat.com/profiles/rh/themes/redhatdotcom/img/logo-red-hat-black.png]

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Re: [ovirt-users] How do you oVirt? Here the answers!

[Sandro Bonazzola]

On Fri, Apr 14, 2017 at 3:11 PM, Pavel Gashev  wrote:

> If 58.4% use Hosted Engine, and 65.8% of them use it in Hyperconverged
> setup, then at least 38.4% of all users have Hyperconverged setup, but only
> 25.9% use Gluster.
>
> What is Hyperconverged setup in at least 12.5% of all cases?
>
>
>

I guess looking at the raw data of the survey that the missing 12.5% is
falling into "Other Storage" where some user reported to use all of them in
different clusters.




>
>
> *From: * on behalf of Sandro Bonazzola <
> sbona...@redhat.com>
> *Date: *Friday, 14 April 2017 at 11:27
> *To: *users , devel , Karanbir Singh <
> kbsi...@redhat.com>, Brian Stinson , Johnny Hughes <
> jhug...@redhat.com>, Niels de Vos , Sahina Bose <
> sab...@redhat.com>
> *Subject: *[ovirt-users] How do you oVirt? Here the answers!
>
>
>
> Hi,
>
> a few weeks ago I opened a survey asking oVirt users about how they use
> oVirt.
>
> Here are the analytics of the survey:
>
> https://docs.google.com/forms/d/1s3k4pq_U4vHTuUUKr6dOosGj_
> EGFxqEisansHlqnyyM/viewanalytics#responses
>
>
>
> Most notable facts:
>
> - 197 responses, two times the responses we got with the 3.6 survey!
>
> - CentOS confims as the most used distribution for running oVirt engine
> (89.8%) and Hypervisors (74.3% which become 94.2% including oVirt Node
> which is a CentOS spin)
>
> - Fedora is the second distribution (4.6%) mostly used only for runnig
> oVirt engine
>
> - oVirt Node jumped from 7.1% on 3.6 survey to 19.9% in 4.1!
>
> - Surprisingly we have someone running both engine and hypervisor on
> Ubuntu based system, within VMs. I'd like to hear more about this use case.
>
> - Within other OS we had Red Hat Enterprise Linux 6 and 7 and Scientific
> Linux (I guess 7, wasn't specified)
>
> - Within the storage, there isn't a "winner" between NFS, Gluster and
> iSCSI. Within Other Storage, Fiber Channel is the most used. We had also:
> Ceph, DAS, EMC ScaleIO, GPFS
>
> - Hosted Engine is the most used deployment choice with 58.4% (was 50.0%
> in 3.6)
>
> - 65.8% of Hosted Engine users use it in Hyperconverged setup.
>
>
>
> Thank you for your feedback and appreciation, we'll look into suggestions
> you sent in the survey.
>
>
>
> --
>
> *SANDRO BONAZZOLA*
>
> ASSOCIATE MANAGER, SOFTWARE ENGINEERING, EMEA ENG VIRTUALIZATION R&D
>
> Red Hat EMEA 
>
> 
>
> *TRIED. TESTED. TRUSTED.* 
>
>
>



-- 

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Red Hat EMEA 

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Re: [ovirt-users] After adding ISCSI storage on ovirt 4.0 (both engine and node) , storage doesnt come up

[Sandro Bonazzola]

Adding some people

On Mon, Mar 27, 2017 at 5:41 PM, martin chamambo 
wrote:

> For some reason when i add iscsi storage on my ovirtNode it works like a
> charm , but when i reboot the ovirtengine and node , the storage doesnt
> come up and on the storage tab , i have noticed that the USE HOST dropdown
> is empty
>
> NB:iscsi and iscsid are running on the node and the LUN is active
>
> ___
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>
>


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Re: [ovirt-users] cleanup old recovery backup

[Sandro Bonazzola]

Adding Simone

On Thu, Apr 13, 2017 at 6:47 AM, eric stam  wrote:

> Good morning,
> Just a question.
> When I do an upgrade of a hosted-engine by the "hosted-engine
> --upgarde-appliance" command the procedure will automatically make a backup
> for recovery. Is there a way to remove an old backup, without finding out
> yourself which files user used and which not (and hooping you will not
> remove a wrong one).
>
> --
> Gr. Eric Stam
> *Mob*.: 06-50278119
>
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>
>


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Re: [ovirt-users] Networking setup

[Sandro Bonazzola]

Adding Dan and Marcin

On Wed, Apr 12, 2017 at 9:29 AM, Alexis HAUSER <
alexis.hau...@imt-atlantique.fr> wrote:

> Hi,
>
>
> I have an Ovirt installation with 3 nodes (5 soon), containing 6 network
> cards (8 soon), a multipath iSCSI array and I would like to know how you
> would advice me to choose which link to bond or not.
>
> I thought about :
>
> 1+2 : ovirtmgmt (bond)
> 3+4 : iSCSI (multipath)
> 5 : VM and Display
> 6 : Migration
>
> What do you think about this configuration ?
> Is it a bad idea to set VM and display on the same network interface ?
> Do ovirtmgmt need high bandwidth ?
> In terms of bandwidth, is it a bad idea to have one single NIC for
> Migration ?
>
>
> Thanks in advance for your suggestions
>
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>
>


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Red Hat EMEA 

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Re: [ovirt-users] Empty ovirt engine web pages

[Sandro Bonazzola]

Adding Martin

On Thu, Apr 13, 2017 at 5:51 AM, shubham dubey  wrote:

> Hello,
> I have installed ovirt engine from source and installed all other required
> packages also,
> including ovirt-js-dependencies.But when I am login to the admin account I
> am getting blank
> page everytime. Some other pages are also coming empty sometime.
> I have pasted the logs for $HOME/ovirt-engine/share/
> ovirt-engine/services/ovirt-engine/ovirt-engine.py start[1].The possible
> error log is
>
> 2017-04-13 09:07:09,902+05 ERROR [org.ovirt.engine.ui.frontend.
> server.dashboard.DashboardDataServlet.CacheUpdate.Utilization]
> (EE-ManagedThreadFactory-default-Thread-1) [] Could not update the
> Utilization Cache: Error while running SQL query:
> org.ovirt.engine.ui.frontend.server.dashboard.DashboardDataException:
> Error while running SQL query
>at 
> org.ovirt.engine.ui.frontend.server.dashboard.dao.BaseDao.runQuery(BaseDao.java:60)
> [frontend.jar:]
>at org.ovirt.engine.ui.frontend.server.dashboard.dao.HostDwhDao.
> getTotalCpuMemCount(HostDwhDao.java:78) [frontend.jar:]
>at org.ovirt.engine.ui.frontend.server.dashboard.
> HourlySummaryHelper.getTotalCpuMemCount(HourlySummaryHelper.java:43)
> [frontend.jar:]
>at org.ovirt.engine.ui.frontend.server.dashboard.
> HourlySummaryHelper.getCpuMemSummary(HourlySummaryHelper.java:21)
> [frontend.jar:]
>at org.ovirt.engine.ui.frontend.server.dashboard.
> DashboardDataServlet.lookupGlobalUtilization(DashboardDataServlet.java:294)
> [frontend.jar:]
>at org.ovirt.engine.ui.frontend.server.dashboard.
> DashboardDataServlet.getDashboard(DashboardDataServlet.java:268)
> [frontend.jar:]
>at org.ovirt.engine.ui.frontend.server.dashboard.
> DashboardDataServlet.populateUtilizationCache(DashboardDataServlet.java:231)
> [frontend.jar:]
>at org.ovirt.engine.ui.frontend.server.dashboard.
> DashboardDataServlet.access$000(DashboardDataServlet.java:26)
> [frontend.jar:]
>at org.ovirt.engine.ui.frontend.server.dashboard.
> DashboardDataServlet$1.run(DashboardDataServlet.java:106) [frontend.jar:]
>at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> [rt.jar:1.8.0_121]
>at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> [rt.jar:1.8.0_121]
>at org.glassfish.enterprise.concurrent.internal.
> ManagedScheduledThreadPoolExecutor$ManagedScheduledFutureTask.access$201(
> ManagedScheduledThreadPoolExecutor.java:383) [javax.enterprise.concurrent-
> 1.0.jar:]
>at org.glassfish.enterprise.concurrent.internal.
> ManagedScheduledThreadPoolExecutor$ManagedScheduledFutureTask.run(
> ManagedScheduledThreadPoolExecutor.java:534) [javax.enterprise.concurrent-
> 1.0.jar:]
>at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> [rt.jar:1.8.0_121]
>at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> [rt.jar:1.8.0_121]
>at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_121]
>at org.glassfish.enterprise.concurrent.ManagedThreadFactoryImpl$
> ManagedThread.run(ManagedThreadFactoryImpl.java:250)
> [javax.enterprise.concurrent-1.0.jar:]
> Caused by: java.sql.SQLException: javax.resource.ResourceException:
> IJ000453: Unable to get managed connection for java:/DWHDataSource
>at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(
> WrapperDataSource.java:146)
>at org.jboss.as.connector.subsystems.datasources.WildFlyDataSource.
> getConnection(WildFlyDataSource.java:66)
>at 
> org.ovirt.engine.ui.frontend.server.dashboard.dao.BaseDao.runQuery(BaseDao.java:53)
> [frontend.jar:]
>... 16 more
> Caused by: javax.resource.ResourceException: IJ000453: Unable to get
> managed connection for java:/DWHDataSource
>at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.
> getManagedConnection(AbstractConnectionManager.java:656)
>at org.jboss.jca.core.connectionmanager.tx.TxConnectionManagerImpl.
> getManagedConnection(TxConnectionManagerImpl.java:429)
>at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.
> allocateConnection(AbstractConnectionManager.java:747)
>at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(
> WrapperDataSource.java:138)
>... 18 more
> Caused by: javax.resource.ResourceException: IJ031084: Unable to create
> connection
>at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.
> createLocalManagedConnection(LocalManagedConnectionFactory.java:345)
>at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.
> getLocalManagedConnection(LocalManagedConnectionFactory.java:352)
>at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.
> createManagedConnection(LocalManagedConnectionFactory.java:287)
>at org.jboss.jca.core.connectionmanager.pool.mcp.
> SemaphoreConcurrentLinkedDequeManagedConnect

Re: [ovirt-users] Ovirt 4.0 to 4.1 CentOS7.3 and libvirtd 2.0.0 segfault issue

[Sandro Bonazzola]

Adding Francesco and Michal

On Sun, Apr 9, 2017 at 1:05 PM, Rafał Wojciechowski <
i...@rafalwojciechowski.pl> wrote:

> hi, I am having some problems after upgrade Ovirt from 4.0 to 4.1 version.
> I made full reinstall of Ovirt, but it seems to be not ovirt upgrade
> related problem(libvirt)
> strange thing is that I am able to run any VM in headless mode without
> console
> and with Console(spice) it it throwing error like here
> https://paste.fedoraproject.org/paste/4WZIackx7ndzv2Kg-
> ucybl5M1UNdIGYhyRLivL9gydE=
> if someone knows the resolution here I will be very happy to apply it
>
> ___
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> http://lists.ovirt.org/mailman/listinfo/users
>
>


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Re: [ovirt-users] Ovirt 4.0 to 4.1 CentOS7.3 and libvirtd 2.0.0 segfault issue

[Rafał Wojciechowski]

hi,

I will add few informations:

currently I am using:

libvirt-daemon-kvm-2.0.0-10.el7_3.5.x86_64
libvirt-daemon-driver-qemu-2.0.0-10.el7_3.5.x86_64
qemu-kvm-ev-2.6.0-28.el7_3.6.1.x86_64
ovirt-engine-4.1.1.8-1.el7.centos.noarch(I tried update, to see if it 
will help but nothing has changed)


same problem exists with SELinux and without SELinux(now it is in 
permissive mode; after the reboot)


Regards,
Rafal Wojciechowski

W dniu 14.04.2017 o 15:39, Sandro Bonazzola pisze:

Adding Francesco and Michal

On Sun, Apr 9, 2017 at 1:05 PM, Rafał Wojciechowski 
mailto:i...@rafalwojciechowski.pl>> wrote:


hi, I am having some problems after upgrade Ovirt from 4.0 to 4.1
version. I made full reinstall of Ovirt, but it seems to be not
ovirt upgrade related problem(libvirt)
strange thing is that I am able to run any VM in headless mode
without console
and with Console(spice) it it throwing error like here

https://paste.fedoraproject.org/paste/4WZIackx7ndzv2Kg-ucybl5M1UNdIGYhyRLivL9gydE=


if someone knows the resolution here I will be very happy to apply it


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Red Hat EMEA 

  
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Re: [ovirt-users] After adding ISCSI storage on ovirt 4.0 (both engine and node) , storage doesnt come up

[martin chamambo]

A quick update , i moved my iscsi storage from centos7.3 targetcli based
one to openfiler and the problem is no longer there.When i was reading the
forums ,seems like i needed to change a global filter in lvm.conf but ddnt
have time to check that so i decided to use openfiler


On Fri, Apr 14, 2017 at 3:34 PM, Sandro Bonazzola 
wrote:

> Adding some people
>
> On Mon, Mar 27, 2017 at 5:41 PM, martin chamambo 
> wrote:
>
>> For some reason when i add iscsi storage on my ovirtNode it works like a
>> charm , but when i reboot the ovirtengine and node , the storage doesnt
>> come up and on the storage tab , i have noticed that the USE HOST dropdown
>> is empty
>>
>> NB:iscsi and iscsid are running on the node and the LUN is active
>>
>> ___
>> Users mailing list
>> Users@ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>>
>
>
> --
>
> SANDRO BONAZZOLA
>
> ASSOCIATE MANAGER, SOFTWARE ENGINEERING, EMEA ENG VIRTUALIZATION R&D
>
> Red Hat EMEA 
> 
> TRIED. TESTED. TRUSTED. 
>
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Re: [ovirt-users] Networking setup

[FERNANDO FREDIANI]

Hello Alexis.

Why use all those physical NICs and not simplify with fewer NICs and
cabling.

Things like Management, Migration and Display you may put on the same set
of NICs (bond0) as Management and Display traffic are marginal so you have
an almost dedicated NICs for Migration traffic.
Then yes is good to separate VMs traffic and iSCSI in different set of NICs.

If you really want to use all your physical NICs add the one left in this
scenario to either add more bandwidth to VMs traffic or to user as
active/backup if you have two non-stackable switches, either with bonding
too.

Regards
Fernando

2017-04-14 10:37 GMT-03:00 Sandro Bonazzola :

> Adding Dan and Marcin
>
> On Wed, Apr 12, 2017 at 9:29 AM, Alexis HAUSER <
> alexis.hau...@imt-atlantique.fr> wrote:
>
>> Hi,
>>
>>
>> I have an Ovirt installation with 3 nodes (5 soon), containing 6 network
>> cards (8 soon), a multipath iSCSI array and I would like to know how you
>> would advice me to choose which link to bond or not.
>>
>> I thought about :
>>
>> 1+2 : ovirtmgmt (bond)
>> 3+4 : iSCSI (multipath)
>> 5 : VM and Display
>> 6 : Migration
>>
>> What do you think about this configuration ?
>> Is it a bad idea to set VM and display on the same network interface ?
>> Do ovirtmgmt need high bandwidth ?
>> In terms of bandwidth, is it a bad idea to have one single NIC for
>> Migration ?
>>
>>
>> Thanks in advance for your suggestions
>>
>> ___
>> Users mailing list
>> Users@ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>>
>
>
> --
>
> SANDRO BONAZZOLA
>
> ASSOCIATE MANAGER, SOFTWARE ENGINEERING, EMEA ENG VIRTUALIZATION R&D
>
> Red Hat EMEA 
> 
> TRIED. TESTED. TRUSTED. 
>
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>
>
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[ovirt-users] Importing existing KVM hosts to Ovirt

[Konstantin Raskoshnyi]

Hi guys, I just installed oVirt 4.1 - works great!

But the questing is, we have around 50 existing  kvm hosts, is it really
possible during adding them to oVirt add all VMs from them to oVirt?

Second options I see - import disks to oVirts and re-create machines

Thanks for the help.
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Re: [ovirt-users] Importing existing KVM hosts to Ovirt

[Michal Skrivanek]

> On 14 Apr 2017, at 19:48, Konstantin Raskoshnyi  wrote:
> 
> Hi guys, I just installed oVirt 4.1 - works great!
> 
> But the questing is, we have around 50 existing  kvm hosts, is it really 
> possible during adding them to oVirt add all VMs from them to oVirt?

you can try GUI Import VM via libvirt, unless you use some exotic 
options/storage it should work just fine

> 
> Second options I see - import disks to oVirts and re-create machines

that’s possible as well, disk by disk.

Thanks,
michal

> 
> Thanks for the help. 
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[ovirt-users] [oVirt 4.1] oVirt installation and hotplug memory to the hosted-engine VM

[wodel youchi]

Hi,

I am testing oVirt 4.1 using oVirt node and oVirt appliance, I have two
questions :

1 - Installation process :
I found that the installation process has changed regarding the appliance
use, it forces the download of the appliance before continuing the
installation, but it still offer the use of another image later on, which
is somehow disturbing.
can the force-download be disabled, When installing the first time, I did
download the rpm appliance before starting the hosted-engine deployment,
but I had to re-install the nodes, and since I have a poor internet
connection and to save time I saved the ova file of the appliance, but I
couldn't use later, because the deployment script forces me to download the
image again.

2 - Can we hotplug memory on the hosted-engine VM? if yes how? I can edit
the VM, but the changes are not taken into account. I then stopped the VM
engine and started it again, still the changes are not taken into account,
in the webui I have the new value, but free -m shows me the old one.

Thanks in advance and thank you all for your work and efforts

Regards.
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[ovirt-users] virsh list

[Konstantin Raskoshnyi]

Hi guys

I'm trying to run virsh list (or any other virsh commands)

virsh list
Please enter your authentication name: admin
Please enter your password:
error: failed to connect to the hypervisor
error: authentication failed: authentication failed

But I have no clue about login:password ovirt uses.
I tried admin password, also tried to create new account with saslpasswd2

Which didn't work to.

Any solutions?
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Re: [ovirt-users] virsh list

[Jamie Lawrence]

I forget where I found it, likely somewhere in the code. But:

u: vdsm@ovirt
p: shibboleth

-j

> On Apr 14, 2017, at 3:58 PM, Konstantin Raskoshnyi  wrote:
> 
> Hi guys
> 
> I'm trying to run virsh list (or any other virsh commands)
> 
> virsh list
> Please enter your authentication name: admin
> Please enter your password:
> error: failed to connect to the hypervisor
> error: authentication failed: authentication failed
> 
> But I have no clue about login:password ovirt uses. 
> I tried admin password, also tried to create new account with saslpasswd2
> 
> Which didn't work to.
> 

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