Re: [ovirt-users] Educational use case question

[Yedidyah Bar David]

On Thu, Apr 14, 2016 at 11:27 AM, Gianluca Cecchi
 wrote:
> On Thu, Apr 14, 2016 at 8:15 AM, Yedidyah Bar David  wrote:
>>
>> On Thu, Apr 14, 2016 at 5:18 AM, Michael Hall  wrote:
>>
>>
>> 3. NFS
>> loop-back mounting nfs is considered risky, due to potential locking
>> issues. Therefore, if you want to use NFS, you are better off doing
>> something like this:
>>
>
> Hello,
> can you give more details about these potential locking issues? So that I
> can reproduce

Most of what I know about this is:

https://lwn.net/Articles/595652/

> I have 2 little environments where I'm using this kind of setup. In one of
> them the hypervisor is a physical server, in the other one the hypervisor is
> itself a libvirt VM inside a Fedora 23 based laptop. oVirt version is 3.6.4
> on both.
>
> The test VM has 2 disks sda and sdb; all ovirt related stuff on sdb
>
> My raw steps for the lab have been, after setting up CentOS 7.2 OS,
> disabling ipv6 and NetworkManager, putting SELinux to permissive and
> enabling ovirt repo:

selinux enforcing should work too, if it fails please open a bug. Thanks.

You might have to set the right contexts for your local disks.

>
> NOTE: I also stop and disable firewalld
>
> My host is ovc72.localdomain.local and name of my future engine
> shengine.localdomain.local
>
> yum -y update
>
> yum install ovirt-hosted-engine-setup ovirt-engine-appliance
>
> yum install rpcbind nfs-utils nfs-server
> (some of them probably already pulled in as dependencies from previous
> command)
>
> When I start from scratch the system
>
> pvcreate /dev/sdb
> vgcreate OVIRT_DOMAIN /dev/sdb
> lvcreate -n ISO_DOMAIN -L 5G OVIRT_DOMAIN
> lvcreate -n SHE_DOMAIN -L 25G OVIRT_DOMAIN
> lvcreate -n NFS_DOMAIN -l +100%FREE OVIRT_DOMAIN
>
> if I only have to reinitialize I start from here
> mkfs -t xfs -f /dev/mapper/OVIRT_DOMAIN-ISO_DOMAIN
> mkfs -t xfs -f /dev/mapper/OVIRT_DOMAIN-NFS_DOMAIN
> mkfs -t xfs -f /dev/mapper/OVIRT_DOMAIN-SHE_DOMAIN
>
> mkdir /ISO_DOMAIN /NFS_DOMAIN /SHE_DOMAIN
>
> /etc/fstab
> /dev/mapper/OVIRT_DOMAIN-ISO_DOMAIN /ISO_DOMAIN xfs defaults0 0
> /dev/mapper/OVIRT_DOMAIN-NFS_DOMAIN /NFS_DOMAIN xfs defaults0 0
> /dev/mapper/OVIRT_DOMAIN-SHE_DOMAIN /SHE_DOMAIN xfs defaults0 0
>
> mount /ISO_DOMAIN/--> this for ISO images
> mount /NFS_DOMAIN/   ---> this for data storage domain where your VMs will
> live (NFS based)
> mount /SHE_DOMAIN/   --> this is for the HE VM
>
> chown 36:36 /ISO_DOMAIN
> chown 36:36 /NFS_DOMAIN
> chown 36:36 /SHE_DOMAIN
>
> chmod 0755 /ISO_DOMAIN
> chmod 0755 /NFS_DOMAIN
> chmod 0755 /SHE_DOMAIN
>
> /etc/exports
> /ISO_DOMAIN   *(rw,anonuid=36,anongid=36,all_squash)
> /NFS_DOMAIN   *(rw,anonuid=36,anongid=36,all_squash)
> /SHE_DOMAIN   *(rw,anonuid=36,anongid=36,all_squash)
>
> systemctl enable rpcbind
> systemctl start rpcbind
>
> systemctl enable nfs-server
> systemctl start nfs-server
>
> hosted-engine --deploy
>
> During setup I choose:
>
>   Engine FQDN: shengine.localdomain.local
>
>   Firewall manager   : iptables
>
>   Storage connection :
> ovc71.localdomain.local:/SHE_DOMAIN
>
>   OVF archive (for disk boot):
> /usr/share/ovirt-engine-appliance/ovirt-engine-appliance-20151015.0-1.el7.centos.ova
>
> Also, I used the appliance provided by ovirt-engine-appliance package
>
> After install you have to make a dependency so that VDSM Broker starts after
> NFS Server
>
> In /usr/lib/systemd/system/ovirt-ha-broker.service
>
> Added in section  [Unit] the line:
>
> After=nfs-server.service
>
> Also in file vdsmd.service changed from:
> After=multipathd.service libvirtd.service iscsid.service rpcbind.service \
>   supervdsmd.service sanlock.service vdsm-network.service
>
> to:
> After=multipathd.service libvirtd.service iscsid.service rpcbind.service \
>   supervdsmd.service sanlock.service vdsm-network.service \
>   nfs-server.service
>
> NOTE: the files will be overwritten by future updates, so you have to keep
> in mind...
>
> On ovc72 in /etc/multipath.conf aright after line
> # VDSM REVISION 1.3
>
> added
> # RHEV PRIVATE
>
> blacklist {
> wwid 0QEMU_QEMU_HARDDISK_drive-scsi0-0-0-1
> wwid 0QEMU_QEMU_HARDDISK_drive-scsi0-0-0-0
> }
>
> To exclude both 2 internal drives... probably oVirt keeps in mind only the
> first one?

No idea

> Otherwise many messages like:
> Jan 25 11:02:00 ovc72 kernel: device-mapper: table: 253:6: multipath: error
> getting device
> Jan 25 11:02:00 ovc72 kernel: device-mapper: ioctl: error adding target to
> table
>
> So far I didn't find any problems. Only a little trick when you have to make
> ful lmaintenance where you have to power off the (only) hypervisor, where
> you have to make the right order steps.

I guess you can probably script that too...

Thanks for sharing. As wrote above, no personal experience with 

Re: [ovirt-users] Educational use case question

[Gianluca Cecchi]

On Thu, Apr 14, 2016 at 8:15 AM, Yedidyah Bar David  wrote:

> On Thu, Apr 14, 2016 at 5:18 AM, Michael Hall  wrote:
>
>
> 3. NFS
> loop-back mounting nfs is considered risky, due to potential locking
> issues. Therefore, if you want to use NFS, you are better off doing
> something like this:
>
>
Hello,
can you give more details about these potential locking issues? So that I
can reproduce
I have 2 little environments where I'm using this kind of setup. In one of
them the hypervisor is a physical server, in the other one the hypervisor
is itself a libvirt VM inside a Fedora 23 based laptop. oVirt version is
3.6.4 on both.

The test VM has 2 disks sda and sdb; all ovirt related stuff on sdb

My raw steps for the lab have been, after setting up CentOS 7.2 OS,
disabling ipv6 and NetworkManager, putting SELinux to permissive and
enabling ovirt repo:

NOTE: I also stop and disable firewalld

My host is ovc72.localdomain.local and name of my future engine
shengine.localdomain.local

yum -y update

yum install ovirt-hosted-engine-setup ovirt-engine-appliance

yum install rpcbind nfs-utils nfs-server
(some of them probably already pulled in as dependencies from previous
command)

When I start from scratch the system

pvcreate /dev/sdb
vgcreate OVIRT_DOMAIN /dev/sdb
lvcreate -n ISO_DOMAIN -L 5G OVIRT_DOMAIN
lvcreate -n SHE_DOMAIN -L 25G OVIRT_DOMAIN
lvcreate -n NFS_DOMAIN -l +100%FREE OVIRT_DOMAIN

if I only have to reinitialize I start from here
mkfs -t xfs -f /dev/mapper/OVIRT_DOMAIN-ISO_DOMAIN
mkfs -t xfs -f /dev/mapper/OVIRT_DOMAIN-NFS_DOMAIN
mkfs -t xfs -f /dev/mapper/OVIRT_DOMAIN-SHE_DOMAIN

mkdir /ISO_DOMAIN /NFS_DOMAIN /SHE_DOMAIN

/etc/fstab
/dev/mapper/OVIRT_DOMAIN-ISO_DOMAIN /ISO_DOMAIN xfs defaults0 0
/dev/mapper/OVIRT_DOMAIN-NFS_DOMAIN /NFS_DOMAIN xfs defaults0 0
/dev/mapper/OVIRT_DOMAIN-SHE_DOMAIN /SHE_DOMAIN xfs defaults0 0

mount /ISO_DOMAIN/--> this for ISO images
mount /NFS_DOMAIN/   ---> this for data storage domain where your VMs will
live (NFS based)
mount /SHE_DOMAIN/   --> this is for the HE VM

chown 36:36 /ISO_DOMAIN
chown 36:36 /NFS_DOMAIN
chown 36:36 /SHE_DOMAIN

chmod 0755 /ISO_DOMAIN
chmod 0755 /NFS_DOMAIN
chmod 0755 /SHE_DOMAIN

/etc/exports
/ISO_DOMAIN   *(rw,anonuid=36,anongid=36,all_squash)
/NFS_DOMAIN   *(rw,anonuid=36,anongid=36,all_squash)
/SHE_DOMAIN   *(rw,anonuid=36,anongid=36,all_squash)

systemctl enable rpcbind
systemctl start rpcbind

systemctl enable nfs-server
systemctl start nfs-server

hosted-engine --deploy

During setup I choose:

  Engine FQDN: shengine.localdomain.local

  Firewall manager   : iptables

  Storage connection :
ovc71.localdomain.local:/SHE_DOMAIN

  OVF archive (for disk boot):
/usr/share/ovirt-engine-appliance/ovirt-engine-appliance-20151015.0-1.el7.centos.ova

Also, I used the appliance provided by ovirt-engine-appliance package

After install you have to make a dependency so that VDSM Broker starts
after NFS Server

In /usr/lib/systemd/system/ovirt-ha-broker.service

Added in section  [Unit] the line:

After=nfs-server.service

Also in file vdsmd.service changed from:
After=multipathd.service libvirtd.service iscsid.service rpcbind.service \
  supervdsmd.service sanlock.service vdsm-network.service

to:
After=multipathd.service libvirtd.service iscsid.service rpcbind.service \
  supervdsmd.service sanlock.service vdsm-network.service \
  nfs-server.service

NOTE: the files will be overwritten by future updates, so you have to keep
in mind...

On ovc72 in /etc/multipath.conf aright after line
# VDSM REVISION 1.3

added
# RHEV PRIVATE

blacklist {
wwid 0QEMU_QEMU_HARDDISK_drive-scsi0-0-0-1
wwid 0QEMU_QEMU_HARDDISK_drive-scsi0-0-0-0
}

To exclude both 2 internal drives... probably oVirt keeps in mind only the
first one?
Otherwise many messages like:
Jan 25 11:02:00 ovc72 kernel: device-mapper: table: 253:6: multipath: error
getting device
Jan 25 11:02:00 ovc72 kernel: device-mapper: ioctl: error adding target to
table

So far I didn't find any problems. Only a little trick when you have to
make ful lmaintenance where you have to power off the (only) hypervisor,
where you have to make the right order steps.

Gianluca
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Re: [ovirt-users] Educational use case question

[Martin Sivak]

Hi,

> But the project doesn't look ready to go and I can't find a download.

I think that is one of the unfortunate effects of how the website was
converted. Check the At a glance section, it says the status is
Released. We have had it released since oVirt 3.3 with significant
improvements in 3.4 and 3.6.

It is used in production world wide now. That said.. we have a
deployment related bug in 3.6, but all should be perfectly fine if you
have just a single host.


Best regards

--
Martin Sivak
SLA / oVirt

On Thu, Apr 14, 2016 at 4:18 AM, Michael Hall <m...@mjhall.org> wrote:
> Thanks for the response.
>
> I did see that page and certainly agree with the point under "Benefit to
> oVirt" heading:
>
> "This operational mode will attract users already familiar with it from
> other virt platforms."
>
> I'm happy building headless servers using CLI over SSH, but my colleague and
> students aren't and need a "nice" point and click web interface which will
> display a usable VM desktop etc. My colleague is most familiar with VMware.
>
> But the project doesn't look ready to go and I can't find a download.
> Also, an implementation that isn't stable and fully functional will probably
> do more damage than good as far as open source's rep in our lab goes.
>
> I know this isn't a use case that oVirt or RedHat are really interested in,
> but I feel it is important to expose students to real world production
> software and systems as much as possible ... all we had to work with last
> year was VirtualBox running on Windows 7!
>
> Mike
>
> On Thu, Apr 14, 2016 at 11:37 AM, Yair Zaslavsky <yzaslav...@aconex.com>
> wrote:
>>
>> As far as I remember, oVirt does come with an all in one configuration ,
>> but looks like it was deprecated at 3.6, So can you try out the self hosted
>> engine?
>>
>>
>> https://www.ovirt.org/develop/release-management/features/engine/self-hosted-engine/
>>
>>
>>
>> ____
>> From: "Michael Hall" <m...@mjhall.org>
>> To: users@ovirt.org
>> Sent: Thursday, 14 April, 2016 11:10:03 AM
>> Subject: [ovirt-users] Educational use case question
>>
>>
>> Hi
>>
>> I am teaching IT subjects in TAFE (a kind of post-secondary technical
>> college) in Australia.
>>
>> We are currently looking for a virtualisation platform that will allow
>> students to install and manage VMs via web interface.
>>
>> VMware is being proposed but I am trying to get KVM and the RedHat
>> ecosystem in the lab as much as possible.
>>
>> I have reasonable experience with running virt manager on CentOS 7, but
>> oVirt is new. I have it installed and running OK but am not sure how to
>> proceed with configuration.
>>
>> I basically want to run a single physical server which will be the KVM
>> host, the ISO and data store, and the home of oVirt engine ... in other
>> words a complete oVirt-managed KVM virtualisation platform running on one
>> physical machine (32GB RAM). It will only ever need to run a handful of VMs
>> with little or no real data or load. Is this possible/feasible?
>>
>> If possible/feasible, where should oVirt engine go ... on the host itself,
>> or into a VM guest?
>>
>> The web interface is what is making oVirt an attractive option at this
>> stage, as students will be working from Windows clients on a corporate
>> network. Do VM GUI display well in the browser?
>>
>> Thanks for any advice
>>
>> Mike Hall
>>
>> ___
>> Users mailing list
>> Users@ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>
>
> ___
> Users mailing list
> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
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Re: [ovirt-users] Educational use case question

[Yair Zaslavsky]

- Original Message -

From: "Alex Crow" <ac...@integrafin.co.uk> 
To: users@ovirt.org 
Sent: Thursday, 14 April, 2016 3:15:44 PM 
Subject: Re: [ovirt-users] Educational use case question 

This certainly works. Console can be reached via a browser plugin or 
Virt-Viewer (available for Windows). Self-hosted engine is the way to 
go, and is production-ready, especially if you want to add more nodes later. 

On 14/04/16 03:33, Michael Hall wrote: 
> Yes but what about the student sitting on the Windows machine in the 
> lab who wants to install and interact with her VM via it's GUI ... 
> like is possible in Virtual Machine Manager on RHEL/CentOS 7 ... 
> except she'd be doing it remotely via an in-browser console ... like 
> Digital Ocean do for example. 

I dont think digital ocean is the correct analogy. 
As a digital ocean user, I have console in which I can create vms, right? But 
who installed the virtualization software for that? 
If you're thinking of a digital ocean, the analogy should be a provider that 
exposes ovirt web admin/user portal as management console to its customers. 

> 

-- 
This message is intended only for the addressee and may contain 
confidential information. Unless you are that person, you may not 
disclose its contents or use it in any way and are requested to delete 
the message along with any attachments and notify us immediately. 
This email is not intended to, nor should it be taken to, constitute advice. 
The information provided is correct to our knowledge & belief and must not 
be used as a substitute for obtaining tax, regulatory, investment, legal or 
any other appropriate advice. 

"Transact" is operated by Integrated Financial Arrangements Ltd. 
29 Clement's Lane, London EC4N 7AE. Tel: (020) 7608 4900 Fax: (020) 7608 5300. 
(Registered office: as above; Registered in England and Wales under 
number: 3727592). Authorised and regulated by the Financial Conduct 
Authority (entered on the Financial Services Register; no. 190856). 
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Re: [ovirt-users] Educational use case question

[Yedidyah Bar David]

On Thu, Apr 14, 2016 at 5:18 AM, Michael Hall <m...@mjhall.org> wrote:
> Thanks for the response.
>
> I did see that page and certainly agree with the point under "Benefit to
> oVirt" heading:
>
> "This operational mode will attract users already familiar with it from
> other virt platforms."
>
> I'm happy building headless servers using CLI over SSH, but my colleague and
> students aren't and need a "nice" point and click web interface which will
> display a usable VM desktop etc. My colleague is most familiar with VMware.
>
> But the project doesn't look ready to go and I can't find a download.

The page mentioned is the "feature page" written during development.
This is in production for 2+ years now, and the page you should follow is:

http://www.ovirt.org/documentation/how-to/hosted-engine/

Also keep in mind:

1. There are some requirements not included in ovirt that you'll have
to supply yourself, including:
- shared storage
- usable name resolution - usually meaning dhcp+dns, with dns pre-populated
with back (and forward) records for the addresses in the dhcp dynamic range,
so that your guest OSes get these as hostnames (and not end up all having
hostname 'localhost', which is probably confusing for users).

2. The expected use-case of ovirt is a larger system, consisting of more
than one physical server, and dedicated storage.

If you still want everything on one host, you basically have two options:

3. NFS
loop-back mounting nfs is considered risky, due to potential locking
issues. Therefore, if you want to use NFS, you are better off doing
something like this:
3.1. Have the physical machine managed by kvm (virt-manager, virsh or
whatever)
3.2. Have a VM serving as an NFS server
3.3. Have another VM (or more than one) serving as a "host" using
nested-kvm
3.4. Either have the engine on another VM on the physical machine,
or use hosted-engine on the virtual host(s).

4. iSCSI
iscsi does not suffer the same locking issues when loop-back mounting,
so in principle you can run hosted-engine directly on the physical
host with part of the disk shared using iSCSI and loop-back mounted.
You can still use the setup described above in "NFS", with the main
benefit being (I think) easier migration to more hardware if/when
needed.

With any of the above, once you finish the setup, everything else
should be at least usable using the web interface.

Re console access - there is a "novnc" spice client that is pure
HTML5 and runs in your browser. I don't think it's used much, but
should work. There is also a websocket-proxy component allowing
access from places that can access the proxy but can't access the
hosts. But most people probably use native clients, usually
remote-viewer or the browser plugin.

Best,

> Also, an implementation that isn't stable and fully functional will probably
> do more damage than good as far as open source's rep in our lab goes.
>
> I know this isn't a use case that oVirt or RedHat are really interested in,
> but I feel it is important to expose students to real world production
> software and systems as much as possible ... all we had to work with last
> year was VirtualBox running on Windows 7!
>
> Mike
>
> On Thu, Apr 14, 2016 at 11:37 AM, Yair Zaslavsky <yzaslav...@aconex.com>
> wrote:
>>
>> As far as I remember, oVirt does come with an all in one configuration ,
>> but looks like it was deprecated at 3.6, So can you try out the self hosted
>> engine?
>>
>>
>> https://www.ovirt.org/develop/release-management/features/engine/self-hosted-engine/
>>
>>
>>
>> 
>> From: "Michael Hall" <m...@mjhall.org>
>> To: users@ovirt.org
>> Sent: Thursday, 14 April, 2016 11:10:03 AM
>> Subject: [ovirt-users] Educational use case question
>>
>>
>> Hi
>>
>> I am teaching IT subjects in TAFE (a kind of post-secondary technical
>> college) in Australia.
>>
>> We are currently looking for a virtualisation platform that will allow
>> students to install and manage VMs via web interface.
>>
>> VMware is being proposed but I am trying to get KVM and the RedHat
>> ecosystem in the lab as much as possible.
>>
>> I have reasonable experience with running virt manager on CentOS 7, but
>> oVirt is new. I have it installed and running OK but am not sure how to
>> proceed with configuration.
>>
>> I basically want to run a single physical server which will be the KVM
>> host, the ISO and data store, and the home of oVirt engine ... in other
>> words a complete oVirt-managed KVM virtualisation platform running on one
>> physical machine (32GB RAM). It will only ever need to run a handful of VMs
>

Re: [ovirt-users] Educational use case question

[Alex Crow]

This certainly works. Console can be reached via a browser plugin or
Virt-Viewer (available for Windows). Self-hosted engine is the way to
go, and is production-ready, especially if you want to add more nodes later.

On 14/04/16 03:33, Michael Hall wrote:
> Yes but what about the student sitting on the Windows machine in the
> lab who wants to install and interact with her VM via it's GUI ...
> like is possible in Virtual Machine Manager on RHEL/CentOS 7 ...
> except she'd be doing it remotely via an in-browser console ... like
> Digital Ocean do for example.
>

--
This message is intended only for the addressee and may contain
confidential information. Unless you are that person, you may not
disclose its contents or use it in any way and are requested to delete
the message along with any attachments and notify us immediately.
This email is not intended to, nor should it be taken to, constitute advice.
The information provided is correct to our knowledge & belief and must not
be used as a substitute for obtaining tax, regulatory, investment, legal or
any other appropriate advice.

"Transact" is operated by Integrated Financial Arrangements Ltd.
29 Clement's Lane, London EC4N 7AE. Tel: (020) 7608 4900 Fax: (020) 7608 5300.
(Registered office: as above; Registered in England and Wales under
number: 3727592). Authorised and regulated by the Financial Conduct
Authority (entered on the Financial Services Register; no. 190856).
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Re: [ovirt-users] Educational use case question

[Michael Hall]

Yes but what about the student sitting on the Windows machine in the lab
who wants to install and interact with her VM via it's GUI ... like is
possible in Virtual Machine Manager on RHEL/CentOS 7 ... except she'd be
doing it remotely via an in-browser console ... like Digital Ocean do for
example.

On Thu, Apr 14, 2016 at 12:24 PM, Yair Zaslavsky <yzaslav...@aconex.com>
wrote:

> Be advised that after installation is done, you can manage VMs using the
> ovirt webadmin.
>
>
> --
> *From: *"Michael Hall" <m...@mjhall.org>
> *To: *users@ovirt.org
> *Sent: *Thursday, 14 April, 2016 12:19:28 PM
> *Subject: *Re: [ovirt-users] Educational use case question
>
>
> Thanks Julian, I'm in Mildura in VIC.
>
> I was hoping for a "pure" web-based client console solution, not something
> like the VMware desktop client.
>
>
> Anyway, I'm not going to get too hung up on this. Even if we go VMware
> because it "just works" and everyone's happy with it, we'll still do plenty
> of CentOS/Fedora.
>
> There is also a case to be made that our students are much more likely to
> encounter VMware in a corporate environment that KVM. And Windows. And
> iPads. Yawn.
>
> Thanks
>
> On Thu, Apr 14, 2016 at 11:22 AM, Julian De Marchi <
> jul...@jdcomputers.com.au> wrote:
>
>> Hey Michael,
>>
>> > I am teaching IT subjects in TAFE (a kind of post-secondary technical
>> > college) in Australia.
>>
>> Great news for this tech to be in tafe. I remember my time at Logan tafe
>> got me into linux.
>>
>>
>> We are currently looking for a virtualisation platform that will allow
>>> students to install and manage VMs via web interface.
>>>
>>> VMware is being proposed but I am trying to get KVM and the RedHat
>>> ecosystem in the lab as much as possible.
>>>
>>> I have reasonable experience with running virt manager on CentOS 7, but
>>> oVirt is new. I have it installed and running OK but am not sure how to
>>> proceed with configuration.
>>>
>>> I basically want to run a single physical server which will be the KVM
>>> host, the ISO and data store, and the home of oVirt engine ... in other
>>> words a complete oVirt-managed KVM virtualisation platform running on one
>>> physical machine (32GB RAM). It will only ever need to run a handful of
>>> VMs
>>> with little or no real data or load. Is this possible/feasible?
>>>
>>> If possible/feasible, where should oVirt engine go ... on the host
>>> itself,
>>> or into a VM guest?
>>>
>>
>> If it was me, I would do the engine install on the metal host itself.
>> Will be a lot easier for you, as long as you _know_ you will not be adding
>> more metal nodes to the oVirt setup.
>>
>> I would also be looking into the "VM Pool" feature for your student. This
>> will give you a pool of VMs which after use can be reset to a default
>> configuration.
>>
>> The web interface is what is making oVirt an attractive option at this
>>> stage, as students will be working from Windows clients on a corporate
>>> network. Do VM GUI display well in the browser?
>>>
>>
>> I have no experience using oVirt from Windows, but if there is a splice
>> client available I see no reason why it shouldn't work.
>>
>> If you're local to QLD, I am more then happy to help in person.
>>
>> --julian
>>
>> ___
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>> http://lists.ovirt.org/mailman/listinfo/users
>>
>
>
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>
>
>
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Re: [ovirt-users] Educational use case question

[Yair Zaslavsky]

Be advised that after installation is done, you can manage VMs using the ovirt 
webadmin. 


- Original Message -

From: "Michael Hall" <m...@mjhall.org> 
To: users@ovirt.org 
Sent: Thursday, 14 April, 2016 12:19:28 PM 
Subject: Re: [ovirt-users] Educational use case question 

Thanks Julian, I'm in Mildura in VIC. 

I was hoping for a "pure" web-based client console solution, not something like 
the VMware desktop client. 


Anyway, I'm not going to get too hung up on this. Even if we go VMware because 
it "just works" and everyone's happy with it, we'll still do plenty of 
CentOS/Fedora. 

There is also a case to be made that our students are much more likely to 
encounter VMware in a corporate environment that KVM. And Windows. And iPads. 
Yawn. 

Thanks 

On Thu, Apr 14, 2016 at 11:22 AM, Julian De Marchi < jul...@jdcomputers.com.au 
> wrote: 


Hey Michael, 

> I am teaching IT subjects in TAFE (a kind of post-secondary technical 
> college) in Australia. 

Great news for this tech to be in tafe. I remember my time at Logan tafe got me 
into linux. 




We are currently looking for a virtualisation platform that will allow 
students to install and manage VMs via web interface. 

VMware is being proposed but I am trying to get KVM and the RedHat 
ecosystem in the lab as much as possible. 

I have reasonable experience with running virt manager on CentOS 7, but 
oVirt is new. I have it installed and running OK but am not sure how to 
proceed with configuration. 

I basically want to run a single physical server which will be the KVM 
host, the ISO and data store, and the home of oVirt engine ... in other 
words a complete oVirt-managed KVM virtualisation platform running on one 
physical machine (32GB RAM). It will only ever need to run a handful of VMs 
with little or no real data or load. Is this possible/feasible? 

If possible/feasible, where should oVirt engine go ... on the host itself, 
or into a VM guest? 



If it was me, I would do the engine install on the metal host itself. Will be a 
lot easier for you, as long as you _know_ you will not be adding more metal 
nodes to the oVirt setup. 

I would also be looking into the "VM Pool" feature for your student. This will 
give you a pool of VMs which after use can be reset to a default configuration. 



The web interface is what is making oVirt an attractive option at this 
stage, as students will be working from Windows clients on a corporate 
network. Do VM GUI display well in the browser? 



I have no experience using oVirt from Windows, but if there is a splice client 
available I see no reason why it shouldn't work. 

If you're local to QLD, I am more then happy to help in person. 

--julian 

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Re: [ovirt-users] Educational use case question

[Michael Hall]

Thanks Julian, I'm in Mildura in VIC.

I was hoping for a "pure" web-based client console solution, not something
like the VMware desktop client.

Anyway, I'm not going to get too hung up on this. Even if we go VMware
because it "just works" and everyone's happy with it, we'll still do plenty
of CentOS/Fedora.

There is also a case to be made that our students are much more likely to
encounter VMware in a corporate environment that KVM. And Windows. And
iPads. Yawn.

Thanks

On Thu, Apr 14, 2016 at 11:22 AM, Julian De Marchi <
jul...@jdcomputers.com.au> wrote:

> Hey Michael,
>
> > I am teaching IT subjects in TAFE (a kind of post-secondary technical
> > college) in Australia.
>
> Great news for this tech to be in tafe. I remember my time at Logan tafe
> got me into linux.
>
>
> We are currently looking for a virtualisation platform that will allow
>> students to install and manage VMs via web interface.
>>
>> VMware is being proposed but I am trying to get KVM and the RedHat
>> ecosystem in the lab as much as possible.
>>
>> I have reasonable experience with running virt manager on CentOS 7, but
>> oVirt is new. I have it installed and running OK but am not sure how to
>> proceed with configuration.
>>
>> I basically want to run a single physical server which will be the KVM
>> host, the ISO and data store, and the home of oVirt engine ... in other
>> words a complete oVirt-managed KVM virtualisation platform running on one
>> physical machine (32GB RAM). It will only ever need to run a handful of
>> VMs
>> with little or no real data or load. Is this possible/feasible?
>>
>> If possible/feasible, where should oVirt engine go ... on the host itself,
>> or into a VM guest?
>>
>
> If it was me, I would do the engine install on the metal host itself. Will
> be a lot easier for you, as long as you _know_ you will not be adding more
> metal nodes to the oVirt setup.
>
> I would also be looking into the "VM Pool" feature for your student. This
> will give you a pool of VMs which after use can be reset to a default
> configuration.
>
> The web interface is what is making oVirt an attractive option at this
>> stage, as students will be working from Windows clients on a corporate
>> network. Do VM GUI display well in the browser?
>>
>
> I have no experience using oVirt from Windows, but if there is a splice
> client available I see no reason why it shouldn't work.
>
> If you're local to QLD, I am more then happy to help in person.
>
> --julian
>
> ___
> Users mailing list
> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
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Re: [ovirt-users] Educational use case question

[Michael Hall]

Thanks for the response.

I did see that page and certainly agree with the point under "Benefit to
oVirt" heading:

"This operational mode will attract users already familiar with it from
other virt platforms."

I'm happy building headless servers using CLI over SSH, but my colleague
and students aren't and need a "nice" point and click web interface which
will display a usable VM desktop etc. My colleague is most familiar with
VMware.

But the project doesn't look ready to go and I can't find a download.
Also, an implementation that isn't stable and fully functional will
probably do more damage than good as far as open source's rep in our lab
goes.

I know this isn't a use case that oVirt or RedHat are really interested in,
but I feel it is important to expose students to real world production
software and systems as much as possible ... all we had to work with last
year was VirtualBox running on Windows 7!

Mike

On Thu, Apr 14, 2016 at 11:37 AM, Yair Zaslavsky <yzaslav...@aconex.com>
wrote:

> As far as I remember, oVirt does come with an all in one configuration ,
> but looks like it was deprecated at 3.6, So can you try out the self hosted
> engine?
>
>
> https://www.ovirt.org/develop/release-management/features/engine/self-hosted-engine/
>
>
>
> --
> *From: *"Michael Hall" <m...@mjhall.org>
> *To: *users@ovirt.org
> *Sent: *Thursday, 14 April, 2016 11:10:03 AM
> *Subject: *[ovirt-users] Educational use case question
>
>
> Hi
>
> I am teaching IT subjects in TAFE (a kind of post-secondary technical
> college) in Australia.
>
> We are currently looking for a virtualisation platform that will allow
> students to install and manage VMs via web interface.
>
> VMware is being proposed but I am trying to get KVM and the RedHat
> ecosystem in the lab as much as possible.
>
> I have reasonable experience with running virt manager on CentOS 7, but
> oVirt is new. I have it installed and running OK but am not sure how to
> proceed with configuration.
>
> I basically want to run a single physical server which will be the KVM
> host, the ISO and data store, and the home of oVirt engine ... in other
> words a complete oVirt-managed KVM virtualisation platform running on one
> physical machine (32GB RAM). It will only ever need to run a handful of VMs
> with little or no real data or load. Is this possible/feasible?
>
> If possible/feasible, where should oVirt engine go ... on the host itself,
> or into a VM guest?
>
> The web interface is what is making oVirt an attractive option at this
> stage, as students will be working from Windows clients on a corporate
> network. Do VM GUI display well in the browser?
>
> Thanks for any advice
>
> Mike Hall
>
> ___
> Users mailing list
> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>
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Re: [ovirt-users] Educational use case question

[Yair Zaslavsky]

As far as I remember, oVirt does come with an all in one configuration , but 
looks like it was deprecated at 3.6, So can you try out the self hosted engine? 

https://www.ovirt.org/develop/release-management/features/engine/self-hosted-engine/
 



- Original Message -

From: "Michael Hall" <m...@mjhall.org> 
To: users@ovirt.org 
Sent: Thursday, 14 April, 2016 11:10:03 AM 
Subject: [ovirt-users] Educational use case question 

Hi 

I am teaching IT subjects in TAFE (a kind of post-secondary technical college) 
in Australia. 

We are currently looking for a virtualisation platform that will allow students 
to install and manage VMs via web interface. 

VMware is being proposed but I am trying to get KVM and the RedHat ecosystem in 
the lab as much as possible. 

I have reasonable experience with running virt manager on CentOS 7, but oVirt 
is new. I have it installed and running OK but am not sure how to proceed with 
configuration. 

I basically want to run a single physical server which will be the KVM host, 
the ISO and data store, and the home of oVirt engine ... in other words a 
complete oVirt-managed KVM virtualisation platform running on one physical 
machine (32GB RAM). It will only ever need to run a handful of VMs with little 
or no real data or load. Is this possible/feasible? 

If possible/feasible, where should oVirt engine go ... on the host itself, or 
into a VM guest? 

The web interface is what is making oVirt an attractive option at this stage, 
as students will be working from Windows clients on a corporate network. Do VM 
GUI display well in the browser? 

Thanks for any advice 

Mike Hall 

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Re: [ovirt-users] Educational use case question

[Julian De Marchi]

Hey Michael,

> I am teaching IT subjects in TAFE (a kind of post-secondary technical
> college) in Australia.

Great news for this tech to be in tafe. I remember my time at Logan tafe 
got me into linux.




We are currently looking for a virtualisation platform that will allow
students to install and manage VMs via web interface.

VMware is being proposed but I am trying to get KVM and the RedHat
ecosystem in the lab as much as possible.

I have reasonable experience with running virt manager on CentOS 7, but
oVirt is new. I have it installed and running OK but am not sure how to
proceed with configuration.

I basically want to run a single physical server which will be the KVM
host, the ISO and data store, and the home of oVirt engine ... in other
words a complete oVirt-managed KVM virtualisation platform running on one
physical machine (32GB RAM). It will only ever need to run a handful of VMs
with little or no real data or load. Is this possible/feasible?

If possible/feasible, where should oVirt engine go ... on the host itself,
or into a VM guest?


If it was me, I would do the engine install on the metal host itself. 
Will be a lot easier for you, as long as you _know_ you will not be 
adding more metal nodes to the oVirt setup.


I would also be looking into the "VM Pool" feature for your student. 
This will give you a pool of VMs which after use can be reset to a 
default configuration.



The web interface is what is making oVirt an attractive option at this
stage, as students will be working from Windows clients on a corporate
network. Do VM GUI display well in the browser?


I have no experience using oVirt from Windows, but if there is a splice 
client available I see no reason why it shouldn't work.


If you're local to QLD, I am more then happy to help in person.

--julian
___
Users mailing list
Users@ovirt.org
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[ovirt-users] Educational use case question

[Michael Hall]

Hi

I am teaching IT subjects in TAFE (a kind of post-secondary technical
college) in Australia.

We are currently looking for a virtualisation platform that will allow
students to install and manage VMs via web interface.

VMware is being proposed but I am trying to get KVM and the RedHat
ecosystem in the lab as much as possible.

I have reasonable experience with running virt manager on CentOS 7, but
oVirt is new. I have it installed and running OK but am not sure how to
proceed with configuration.

I basically want to run a single physical server which will be the KVM
host, the ISO and data store, and the home of oVirt engine ... in other
words a complete oVirt-managed KVM virtualisation platform running on one
physical machine (32GB RAM). It will only ever need to run a handful of VMs
with little or no real data or load. Is this possible/feasible?

If possible/feasible, where should oVirt engine go ... on the host itself,
or into a VM guest?

The web interface is what is making oVirt an attractive option at this
stage, as students will be working from Windows clients on a corporate
network. Do VM GUI display well in the browser?

Thanks for any advice

Mike Hall
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