On 09/13/2012 12:48 AM, Nicolas Chenier wrote:

Wonderful thank you. Once I install oVirt in KVM (without oVirt) will I be able to import the VM in oVirt after I'm up?

what would be the benefit of doing that?

On 2012-09-12 5:25 PM, "Itamar Heim" <iheim@redhat.com <mailto:iheim@redhat.com>> wrote:

On 09/13/2012 12:20 AM, Nicolas Chenier wrote:

Yes!

how critical is the availability? you could place it in a VM on shared storage. then launch it on one host. but you should never launch it on the other host before you made sure it doesn't run on the first node, or it will be corrupted. you also want to set the SPM priority on the node it is running to lower than the other node so SPM won't be scheduled on engine node.

On 2012-09-12 5:02 PM, "Itamar Heim" <iheim@redhat.com <mailto:iheim@redhat.com> <mailto:iheim@redhat.com <mailto:iheim@redhat.com>>> wrote:

On 09/12/2012 11:58 PM, Nicolas Chenier wrote:

Thank you Itamar, much appreciated...

So how would you go about getting this setup if you only have 2 host servers?

are they supposed to be in same cluster with shared storage, live migration, etc.?

On Wed, Sep 12, 2012 at 4:43 PM, Itamar Heim <iheim@redhat.com <mailto:iheim@redhat.com> <mailto:iheim@redhat.com <mailto:iheim@redhat.com>> <mailto:iheim@redhat.com <mailto:iheim@redhat.com> <mailto:iheim@redhat.com <mailto:iheim@redhat.com>>>> wrote:

On 09/12/2012 08:26 PM, Nicolas Chenier wrote:

Hi all,

I am starting a small hosting business and want to use oVirt w/ KVM as my virtualization platform.

I currently have 2 host servers and an iSCSI NAS.

Do I need a dedicated machine to run oVirt? Can I run it from a VM?

either will work, but not easy right now to host the engine on its own hypervisor.

Can I use the all-in-one solution in a Production environment, with a 2nd host? ... would I need to install oVirt on both hosts, in the event that one of my servers went down?

the all-in-one is mostly intended for POC level, using local storage of the host. if you plan to use both hosts with local storage, you should be able to use it, depending on strength of your hosts.

I am trying to see how I can survive if my oVirt server fails. It would be great if it ran from a VM but I can also see issues with doing that...

Another option would be to run oVirt on my workstation and have it connect to my 2 host servers in colocation over the internet?

should work over WAN, but if you are hosting, wouldn't users need to access the engine / your workstation?

Please let me know how you've accomplished an oVirt setup with 2 servers.

Thank you!

Nic

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On Wed, Sep 12, 2012 at 9:22 PM, Nicolas Chenier <dascope@gmail.com> wrote:

I was under the impression that my oVirt VM would show up in oVirt and that I could manage it through there...

What you're saying is that I should just run it seperatly and not manage it with itself (oVirt)? keep it on my shared storage so that I can run it off any of the 2 servers? But not manage it with oVirt (itself). I think I'm starting to get it now...

I really appreciate your help!

Nic

Nic, how did you make out with this? I'm looking to do the same thing and am wondering if there is any risk in running the engine on a VM managed by the same engine, as you were suggesting before. Did you give this a shot? Itamar, why did you steer Nic away from this? _______________ Alan Johnson alan@datdec.com

This is a multi-part message in MIME format. --------------090400090709080906020407 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit On 09/22/2012 01:09 PM, Nicolas Chenier wrote:

Hi Alan,

I have oVirt running in a VM off my Desktop (Fedora 17 w/ KVM & Virt-Manager) off my iSCSI NAS.

I've attached Server #1 as my first host (it's running ovirt-node).

In the process of setting up my storage domains. I have a few questions to the experts out there:

1) How do I add my CD .ISOs to setup new VMs? Create iSCSI storage domain? But then how do I copy my ISOs to it? Create an ISO storage domain and use the ovirt-iso-uploader to add your ISOs and .vfd files into that domain.

2) Can I run my oVirt VM from ovirt-node machine, without running it in oVirt (ie. setup iSCSI in virt-manager (as it is now) and run oVirt from virt-manager... then I can manage my hosts through that ovirt VM? Huh? You could run the oVirt Manager from a VM managed by virt-manager... yes. Running the oVirt manager inside a VM on a hypervisor (ie. ovirt-node) controlled by that same manager isn't supported AFAIK because the mgr. could get fenced.

To summarize, you can pretty much run the oVirt manager on any supported OS as long as that OS instance isn't running on a hypervisor (ie. ovirt-node) controlled by *that* manager. If you haven't noticed the vocabulary to describe the various components can get a little confusing. ;)

Not sure if I'm making myself clear... but I'm making progress. I think as long as you are not managing your oVirt vm through oVirt itself, the solution should work fine! Just trying to see if I can get that done on an ovirt-node machine...

Thank you,

Nic

On Fri, Sep 21, 2012 at 3:31 PM, Alan Johnson <alan@datdec.com <mailto:alan@datdec.com>> wrote:

On Wed, Sep 12, 2012 at 9:22 PM, Nicolas Chenier <dascope@gmail.com <mailto:dascope@gmail.com>> wrote:

I was under the impression that my oVirt VM would show up in oVirt and that I could manage it through there... What you're saying is that I should just run it seperatly and not manage it with itself (oVirt)? keep it on my shared storage so that I can run it off any of the 2 servers? But not manage it with oVirt (itself). I think I'm starting to get it now... I really appreciate your help! Nic

Nic, how did you make out with this? I'm looking to do the same thing and am wondering if there is any risk in running the engine on a VM managed by the same engine, as you were suggesting before. Did you give this a shot?

Itamar, why did you steer Nic away from this?

_______________ Alan Johnson alan@datdec.com <mailto:alan@datdec.com>

_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users

--------------090400090709080906020407 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit <html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> <div class="moz-cite-prefix">On 09/22/2012 01:09 PM, Nicolas Chenier wrote:<br> </div> <blockquote cite="mid:CAJZXTnpGYDdkHJeJtoFq8CP-bz72dR=55L4imyc05qNYCpBHmw@mail.gmail.com" type="cite">Hi Alan,<br> <br> I have oVirt running in a VM off my Desktop (Fedora 17 w/ KVM & Virt-Manager) off my iSCSI NAS. <br> <br> I've attached Server #1 as my first host (it's running ovirt-node).<br> <br> In the process of setting up my storage domains. I have a few questions to the experts out there:<br> <br> 1) How do I add my CD .ISOs to setup new VMs? Create iSCSI storage domain? But then how do I copy my ISOs to it?<br> </blockquote> Create an ISO storage domain and use the ovirt-iso-uploader to add your ISOs and .vfd files into that domain.<br> <blockquote cite="mid:CAJZXTnpGYDdkHJeJtoFq8CP-bz72dR=55L4imyc05qNYCpBHmw@mail.gmail.com" type="cite"><br> 2) Can I run my oVirt VM from ovirt-node machine, without running it in oVirt (ie. setup iSCSI in virt-manager (as it is now) and run oVirt from virt-manager... then I can manage my hosts through that ovirt VM?<br> </blockquote> Huh?  You could run the oVirt Manager from a VM managed by virt-manager... yes.  Running the oVirt manager inside a VM on a hypervisor (ie. ovirt-node) controlled by that same manager isn't supported AFAIK because the mgr. could get fenced.  <br> <br> To summarize, you can pretty much run the oVirt manager on any supported OS as long as that OS instance isn't running on a hypervisor (ie. ovirt-node) controlled by *that* manager.<br> <br> If you haven't noticed the vocabulary to describe the various components can get a little confusing. ;)  <br> <br> <br> <blockquote cite="mid:CAJZXTnpGYDdkHJeJtoFq8CP-bz72dR=55L4imyc05qNYCpBHmw@mail.gmail.com" type="cite"> <br> Not sure if I'm making myself clear... but I'm making progress. I think as long as you are not managing your oVirt vm through oVirt itself, the solution should work fine! Just trying to see if I can get that done on an ovirt-node machine...<br> <br> Thank you,<br> <br> Nic<br> <br> <br> <div class="gmail_quote">On Fri, Sep 21, 2012 at 3:31 PM, Alan Johnson <span dir="ltr"><<a moz-do-not-send="true" href="mailto:alan@datdec.com" target="_blank">alan@datdec.com</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div class="gmail_quote"> <div class="im">On Wed, Sep 12, 2012 at 9:22 PM, Nicolas Chenier <span dir="ltr"><<a moz-do-not-send="true" href="mailto:dascope@gmail.com" target="_blank">dascope@gmail.com</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div>I was under the impression that my oVirt VM would show up in oVirt and that I could manage it through there...</div> <div> </div> <div>What you're saying is that I should just run it seperatly and not manage it with itself (oVirt)? keep it on my shared storage so that I can run it off any of the 2 servers? But not manage it with oVirt (itself). I think I'm starting to get it now...</div> <div> </div> <div>I really appreciate your help!</div> <div> </div> <div>Nic</div> </blockquote> <div><br> </div> </div> <div>Nic, how did you make out with this?  I'm looking to do the same thing and am wondering if there is any risk in running the engine on a VM managed by the same engine, as you were suggesting before.  Did you give this a shot?</div> <div><br> </div> <div>Itamar, why did you steer Nic away from this?</div> <font color="#663366"><font face="verdana,sans-serif"><br clear="all"> </font></font>_______________<span class="HOEnZb"><font color="#888888"><br> Alan Johnson<br> <a moz-do-not-send="true" href="mailto:alan@datdec.com" target="_blank">alan@datdec.com</a><br> <div> </div> </font></span></div> </blockquote> </div> <br> <br> <fieldset class="mimeAttachmentHeader"></fieldset> <br> <pre wrap="">_______________________________________________ Users mailing list <a class="moz-txt-link-abbreviated" href="mailto:Users@ovirt.org">Users@ovirt.org</a> <a class="moz-txt-link-freetext" href="http://lists.ovirt.org/mailman/listinfo/users">http://lists.ovirt.org/mailman/listinfo/users</a> </pre> </blockquote> <br> <br> </body> </html> --------------090400090709080906020407--

Question - if oVirt goes down... do the ovirt-nodes and VMs remain up?

Keith, how would you set yourself up with these specs:

2 host servers (quad-core xeons with 32gigs of ram) Are you saying that you only have 2 machines in total, or that you have 2 machines that can be dedicated hypervisors (ie. ovirt-node) and a

This is a multi-part message in MIME format. --------------030205010305010900010708 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit On 09/22/2012 02:28 PM, Nicolas Chenier wrote: third machine that can be a dedicated manager? If the former then one machine must run some version of *nix compatible with oVirt Manager and, the other machine in this scenario can simply run ovirt-node. If the latter, then you have 1 box dedicated as a manager and 2 boxes as dedicated hypervisors. This is a fairly basic/good setup.

1 iSCSI NAS

Starting to think there is no way to achieve HA with this setup? Not with only 2 boxes. No. oVirt requires a dedicated machine? Generally, speaking. Yes.

Truly HA setups aren't cheap and people often have different ideas of what constitutes HA. Offhand I would think that you would need... - 2 boxes for the oVirt manager - Clustering software for the manager to facilitate an active/passive setup. - UPSs (at *least* 2) which can be controlled by clustering software. Why? Most clustering SW require a fence device. These will be your fence devices. - 2 boxes for your hypervisors (ie. ovirt-nodes). This will facilitate fail-over from one node to the other. HA isn't cheap and can't usually be done on 2 boxes, IMO unless you're failing over a single app.

Thank you!

Nic

PS. Could oVirt be integrated into ovirt-node on every server?

On Sat, Sep 22, 2012 at 2:16 PM, Keith Robertson <kroberts@redhat.com <mailto:kroberts@redhat.com>> wrote:

On 09/22/2012 01:09 PM, Nicolas Chenier wrote:

...

Hi Alan,

I have oVirt running in a VM off my Desktop (Fedora 17 w/ KVM & Virt-Manager) off my iSCSI NAS.

I've attached Server #1 as my first host (it's running ovirt-node).

In the process of setting up my storage domains. I have a few questions to the experts out there:

1) How do I add my CD .ISOs to setup new VMs? Create iSCSI storage domain? But then how do I copy my ISOs to it?

Create an ISO storage domain and use the ovirt-iso-uploader to add your ISOs and .vfd files into that domain.

...

2) Can I run my oVirt VM from ovirt-node machine, without running it in oVirt (ie. setup iSCSI in virt-manager (as it is now) and run oVirt from virt-manager... then I can manage my hosts through that ovirt VM?

Huh? You could run the oVirt Manager from a VM managed by virt-manager... yes. Running the oVirt manager inside a VM on a hypervisor (ie. ovirt-node) controlled by that same manager isn't supported AFAIK because the mgr. could get fenced.

To summarize, you can pretty much run the oVirt manager on any supported OS as long as that OS instance isn't running on a hypervisor (ie. ovirt-node) controlled by *that* manager.

If you haven't noticed the vocabulary to describe the various components can get a little confusing. ;)

...

Not sure if I'm making myself clear... but I'm making progress. I think as long as you are not managing your oVirt vm through oVirt itself, the solution should work fine! Just trying to see if I can get that done on an ovirt-node machine...

Thank you,

Nic

On Fri, Sep 21, 2012 at 3:31 PM, Alan Johnson <alan@datdec.com <mailto:alan@datdec.com>> wrote:

On Wed, Sep 12, 2012 at 9:22 PM, Nicolas Chenier <dascope@gmail.com <mailto:dascope@gmail.com>> wrote:

I was under the impression that my oVirt VM would show up in oVirt and that I could manage it through there... What you're saying is that I should just run it seperatly and not manage it with itself (oVirt)? keep it on my shared storage so that I can run it off any of the 2 servers? But not manage it with oVirt (itself). I think I'm starting to get it now... I really appreciate your help! Nic

Nic, how did you make out with this? I'm looking to do the same thing and am wondering if there is any risk in running the engine on a VM managed by the same engine, as you were suggesting before. Did you give this a shot?

Itamar, why did you steer Nic away from this?

_______________ Alan Johnson alan@datdec.com <mailto:alan@datdec.com>

_______________________________________________ Users mailing list Users@ovirt.org <mailto:Users@ovirt.org> http://lists.ovirt.org/mailman/listinfo/users

--------------030205010305010900010708 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit <html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> <div class="moz-cite-prefix">On 09/22/2012 02:28 PM, Nicolas Chenier wrote:<br> </div> <blockquote cite="mid:CAJZXTno2Qqzknhr+UqHmG6r7o1JCTn-M-en01yWC=M5Gz5x=mg@mail.gmail.com" type="cite">Question - if oVirt goes down... do the ovirt-nodes and VMs remain up?<br> <br> <br> Keith, how would you set yourself up with these specs:<br> <br> 2 host servers (quad-core xeons with 32gigs of ram)<br> </blockquote> Are you saying that you only have 2 machines in total, or that you have 2 machines that can be dedicated hypervisors (ie. ovirt-node) and a third machine that can be a dedicated manager?<br> <br> If the former then one machine must run some version of *nix compatible with oVirt Manager and, the other machine in this scenario can simply run ovirt-node. <br> <br> If the latter, then you have 1 box dedicated as a manager and 2 boxes as dedicated hypervisors.  This is a fairly basic/good setup.  <br> <blockquote cite="mid:CAJZXTno2Qqzknhr+UqHmG6r7o1JCTn-M-en01yWC=M5Gz5x=mg@mail.gmail.com" type="cite">1 iSCSI NAS<br> <br> Starting to think there is no way to achieve HA with this setup? </blockquote> Not with only 2 boxes.  No.<br> <blockquote cite="mid:CAJZXTno2Qqzknhr+UqHmG6r7o1JCTn-M-en01yWC=M5Gz5x=mg@mail.gmail.com" type="cite">oVirt requires a dedicated machine?<br> </blockquote> Generally, speaking.  Yes.<br> <br> Truly HA setups aren't cheap and people often have different ideas of what constitutes HA.  Offhand I would think that you would need...<br> <br> - 2 boxes for the oVirt manager<br> - Clustering software for the manager to facilitate an active/passive setup.<br> - UPSs (at *least* 2) which can be controlled by clustering software.  Why?  Most clustering SW require a fence device.  These will be your fence devices.<br> - 2 boxes for your hypervisors (ie. ovirt-nodes).  This will facilitate fail-over from one node to the other.<br> <br> HA isn't cheap and can't usually be done on 2 boxes, IMO unless you're failing over a single app.<br> <br> <br> <blockquote cite="mid:CAJZXTno2Qqzknhr+UqHmG6r7o1JCTn-M-en01yWC=M5Gz5x=mg@mail.gmail.com" type="cite"> <br> Thank you!<br> <br> Nic<br> <br> PS. Could oVirt be integrated into ovirt-node on every server?<br> <br> <br> <br> <div class="gmail_quote">On Sat, Sep 22, 2012 at 2:16 PM, Keith Robertson <span dir="ltr"><<a moz-do-not-send="true" href="mailto:kroberts@redhat.com" target="_blank">kroberts@redhat.com</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div bgcolor="#FFFFFF" text="#000000"> <div class="im"> <div>On 09/22/2012 01:09 PM, Nicolas Chenier wrote:<br> </div> <blockquote type="cite">Hi Alan,<br> <br> I have oVirt running in a VM off my Desktop (Fedora 17 w/ KVM & Virt-Manager) off my iSCSI NAS. <br> <br> I've attached Server #1 as my first host (it's running ovirt-node).<br> <br> In the process of setting up my storage domains. I have a few questions to the experts out there:<br> <br> 1) How do I add my CD .ISOs to setup new VMs? Create iSCSI storage domain? But then how do I copy my ISOs to it?<br> </blockquote> </div> Create an ISO storage domain and use the ovirt-iso-uploader to add your ISOs and .vfd files into that domain. <div class="im"><br> <blockquote type="cite"><br> 2) Can I run my oVirt VM from ovirt-node machine, without running it in oVirt (ie. setup iSCSI in virt-manager (as it is now) and run oVirt from virt-manager... then I can manage my hosts through that ovirt VM?<br> </blockquote> </div> Huh?  You could run the oVirt Manager from a VM managed by virt-manager... yes.  Running the oVirt manager inside a VM on a hypervisor (ie. ovirt-node) controlled by that same manager isn't supported AFAIK because the mgr. could get fenced.  <br> <br> To summarize, you can pretty much run the oVirt manager on any supported OS as long as that OS instance isn't running on a hypervisor (ie. ovirt-node) controlled by *that* manager.<br> <br> If you haven't noticed the vocabulary to describe the various components can get a little confusing. ;)  <br> <br> <br> <blockquote type="cite"> <div class="im"> <br> Not sure if I'm making myself clear... but I'm making progress. I think as long as you are not managing your oVirt vm through oVirt itself, the solution should work fine! Just trying to see if I can get that done on an ovirt-node machine...<br> <br> Thank you,<br> <br> Nic<br> <br> <br> <div class="gmail_quote">On Fri, Sep 21, 2012 at 3:31 PM, Alan Johnson <span dir="ltr"><<a moz-do-not-send="true" href="mailto:alan@datdec.com" target="_blank">alan@datdec.com</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div class="gmail_quote"> <div>On Wed, Sep 12, 2012 at 9:22 PM, Nicolas Chenier <span dir="ltr"><<a moz-do-not-send="true" href="mailto:dascope@gmail.com" target="_blank">dascope@gmail.com</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div>I was under the impression that my oVirt VM would show up in oVirt and that I could manage it through there...</div> <div> </div> <div>What you're saying is that I should just run it seperatly and not manage it with itself (oVirt)? keep it on my shared storage so that I can run it off any of the 2 servers? But not manage it with oVirt (itself). I think I'm starting to get it now...</div> <div> </div> <div>I really appreciate your help!</div> <div> </div> <div>Nic</div> </blockquote> <div><br> </div> </div> <div>Nic, how did you make out with this?  I'm looking to do the same thing and am wondering if there is any risk in running the engine on a VM managed by the same engine, as you were suggesting before.  Did you give this a shot?</div> <div><br> </div> <div>Itamar, why did you steer Nic away from this?</div> <font color="#663366"><font face="verdana,sans-serif"><br clear="all"> </font></font>_______________<span><font color="#888888"><br> Alan Johnson<br> <a moz-do-not-send="true" href="mailto:alan@datdec.com" target="_blank">alan@datdec.com</a><br> <div> </div> </font></span></div> </blockquote> </div> <br> <br> <fieldset></fieldset> <br> </div> <div class="im"> <pre>_______________________________________________ Users mailing list <a moz-do-not-send="true" href="mailto:Users@ovirt.org" target="_blank">Users@ovirt.org</a> <a moz-do-not-send="true" href="http://lists.ovirt.org/mailman/listinfo/users" target="_blank">http://lists.ovirt.org/mailman/listinfo/users</a> </pre> </div> </blockquote> <br> <br> </div> </blockquote> </div> <br> </blockquote> <br> </body> </html> --------------030205010305010900010708--

This is a multi-part message in MIME format. --------------070709080206000602010905 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit On 09/22/2012 05:35 PM, Nicolas Chenier wrote:

*Question 1 - if oVirt goes down... do the ovirt-nodes and VMs remain up?* Can someone answer this please? :-) If the oVirt manager (ie. the web application running inside AS7) loses connectivity to the node, the VM's on that node will keep running. You should know; however, that the general design is for the manager to remain in contact with the nodes.

Due to budget and space constraints, I currently have 2 servers total.

What if I did the following:

Server 1) Fedora 17 with KVM/Virt-manager... running oVirt as a VM (through virt-manager) off the iSCSI NAS. Fine Server 2) oVirt-node machine - one and only host machine for oVirt running on Server 1). Again fine.

With this setup I can run VMs from iSCSI on oVirt-node Server 2). Yes, nearly identical to my setup.

In the event that oVirt-node Server 2) goes down... is anything stopping me from setting up my VMs on Server 1) with the iSCSI storage from the NAS and run my VMs without oVirt through virt-manager? Yes, I don't think that will work out of the box. It could probably be done but it would require some manual steps.

This would give me some form of redundancy (requiring manual intervention) in the event that my ovirt-node went down... is this a feasible setup? See previous comment.

To make it even more redundant, maybe I should do the following with Server 2)

Install Fedora 17 with KVM/Virt-Manager, and VDSM... in the event that Server 1) fails... I can run my VMs on Server 2) through virt-manager?

Should I just drop oVirt for now and run virt-manager on my 2 hosts, moving VMs manually (as they are running off iSCSI NAS) if a host fails? <tear> It depends on what you are trying to do. oVirt and virt-manager solve different problems. I would say that virt-manager is probably OK for a small setup, but I wouldn't deploy an enterprise solution around it.

You have enough gear for a small oVirt setup. Run with that and add more nodes as you can. My 2c.

Thank you,

Nic

On Sat, Sep 22, 2012 at 4:09 PM, Keith Robertson <kroberts@redhat.com <mailto:kroberts@redhat.com>> wrote:

On 09/22/2012 02:28 PM, Nicolas Chenier wrote:

...

Question - if oVirt goes down... do the ovirt-nodes and VMs remain up?

Keith, how would you set yourself up with these specs:

2 host servers (quad-core xeons with 32gigs of ram)

Are you saying that you only have 2 machines in total, or that you have 2 machines that can be dedicated hypervisors (ie. ovirt-node) and a third machine that can be a dedicated manager?

If the former then one machine must run some version of *nix compatible with oVirt Manager and, the other machine in this scenario can simply run ovirt-node.

If the latter, then you have 1 box dedicated as a manager and 2 boxes as dedicated hypervisors. This is a fairly basic/good setup.

...

1 iSCSI NAS

Starting to think there is no way to achieve HA with this setup?

Not with only 2 boxes. No.

...

oVirt requires a dedicated machine?

Generally, speaking. Yes.

Truly HA setups aren't cheap and people often have different ideas of what constitutes HA. Offhand I would think that you would need...

- 2 boxes for the oVirt manager - Clustering software for the manager to facilitate an active/passive setup. - UPSs (at *least* 2) which can be controlled by clustering software. Why? Most clustering SW require a fence device. These will be your fence devices. - 2 boxes for your hypervisors (ie. ovirt-nodes). This will facilitate fail-over from one node to the other.

HA isn't cheap and can't usually be done on 2 boxes, IMO unless you're failing over a single app.

...

Thank you!

Nic

PS. Could oVirt be integrated into ovirt-node on every server?

On Sat, Sep 22, 2012 at 2:16 PM, Keith Robertson <kroberts@redhat.com <mailto:kroberts@redhat.com>> wrote:

On 09/22/2012 01:09 PM, Nicolas Chenier wrote:

...

Hi Alan,

I have oVirt running in a VM off my Desktop (Fedora 17 w/ KVM & Virt-Manager) off my iSCSI NAS.

I've attached Server #1 as my first host (it's running ovirt-node).

In the process of setting up my storage domains. I have a few questions to the experts out there:

1) How do I add my CD .ISOs to setup new VMs? Create iSCSI storage domain? But then how do I copy my ISOs to it?

Create an ISO storage domain and use the ovirt-iso-uploader to add your ISOs and .vfd files into that domain.

...

2) Can I run my oVirt VM from ovirt-node machine, without running it in oVirt (ie. setup iSCSI in virt-manager (as it is now) and run oVirt from virt-manager... then I can manage my hosts through that ovirt VM?

Huh? You could run the oVirt Manager from a VM managed by virt-manager... yes. Running the oVirt manager inside a VM on a hypervisor (ie. ovirt-node) controlled by that same manager isn't supported AFAIK because the mgr. could get fenced.

To summarize, you can pretty much run the oVirt manager on any supported OS as long as that OS instance isn't running on a hypervisor (ie. ovirt-node) controlled by *that* manager.

If you haven't noticed the vocabulary to describe the various components can get a little confusing. ;)

...

Not sure if I'm making myself clear... but I'm making progress. I think as long as you are not managing your oVirt vm through oVirt itself, the solution should work fine! Just trying to see if I can get that done on an ovirt-node machine...

Thank you,

Nic

On Fri, Sep 21, 2012 at 3:31 PM, Alan Johnson <alan@datdec.com <mailto:alan@datdec.com>> wrote:

On Wed, Sep 12, 2012 at 9:22 PM, Nicolas Chenier <dascope@gmail.com <mailto:dascope@gmail.com>> wrote:

I was under the impression that my oVirt VM would show up in oVirt and that I could manage it through there... What you're saying is that I should just run it seperatly and not manage it with itself (oVirt)? keep it on my shared storage so that I can run it off any of the 2 servers? But not manage it with oVirt (itself). I think I'm starting to get it now... I really appreciate your help! Nic

Nic, how did you make out with this? I'm looking to do the same thing and am wondering if there is any risk in running the engine on a VM managed by the same engine, as you were suggesting before. Did you give this a shot?

Itamar, why did you steer Nic away from this?

_______________ Alan Johnson alan@datdec.com <mailto:alan@datdec.com>

_______________________________________________ Users mailing list Users@ovirt.org <mailto:Users@ovirt.org> http://lists.ovirt.org/mailman/listinfo/users

--------------070709080206000602010905 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit <html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> <div class="moz-cite-prefix">On 09/22/2012 05:35 PM, Nicolas Chenier wrote:<br> </div> <blockquote cite="mid:CAJZXTnpBR1S3p2fxzqWHy39VSrJpynZFvTG7ax-NCZ1QpFJrvQ@mail.gmail.com" type="cite"><b>Question 1 - if oVirt goes down... do the ovirt-nodes and VMs remain up?</b> Can someone answer this please? :-)<br> </blockquote> If the oVirt manager (ie. the web application running inside AS7) loses connectivity to the node, the VM's on that node will keep running.  You should know; however, that the general design is for the manager to remain in contact with the nodes. <br> <blockquote cite="mid:CAJZXTnpBR1S3p2fxzqWHy39VSrJpynZFvTG7ax-NCZ1QpFJrvQ@mail.gmail.com" type="cite"><br> Due to budget and space constraints, I currently have 2 servers total.<br> <br> What if I did the following:<br> <br> Server 1) Fedora 17 with KVM/Virt-manager... running oVirt as a VM (through virt-manager) off the iSCSI NAS.<br> </blockquote> Fine<br> <blockquote cite="mid:CAJZXTnpBR1S3p2fxzqWHy39VSrJpynZFvTG7ax-NCZ1QpFJrvQ@mail.gmail.com" type="cite"> Server 2) oVirt-node machine - one and only host machine for oVirt running on Server 1).<br> </blockquote> Again fine.<br> <blockquote cite="mid:CAJZXTnpBR1S3p2fxzqWHy39VSrJpynZFvTG7ax-NCZ1QpFJrvQ@mail.gmail.com" type="cite"><br> With this setup I can run VMs from iSCSI on oVirt-node Server 2). <br> </blockquote> Yes, nearly identical to my setup.<br> <blockquote cite="mid:CAJZXTnpBR1S3p2fxzqWHy39VSrJpynZFvTG7ax-NCZ1QpFJrvQ@mail.gmail.com" type="cite"><br> In the event that oVirt-node Server 2) goes down... is anything stopping me from setting up my VMs on Server 1) with the iSCSI storage from the NAS and run my VMs without oVirt through virt-manager?<br> </blockquote> Yes, I don't think that will work out of the box.  It could probably be done but it would require some manual steps.<br> <blockquote cite="mid:CAJZXTnpBR1S3p2fxzqWHy39VSrJpynZFvTG7ax-NCZ1QpFJrvQ@mail.gmail.com" type="cite"> <br> This would give me some form of redundancy (requiring manual intervention) in the event that my ovirt-node went down... is this a feasible setup?<br> </blockquote> See previous comment.<br> <blockquote cite="mid:CAJZXTnpBR1S3p2fxzqWHy39VSrJpynZFvTG7ax-NCZ1QpFJrvQ@mail.gmail.com" type="cite"><br> To make it even more redundant, maybe I should do the following with Server 2)<br> <br> Install Fedora 17 with KVM/Virt-Manager, and VDSM... in the event that Server 1) fails... I can run my VMs on Server 2) through virt-manager?<br> <br> Should I just drop oVirt for now and run virt-manager on my 2 hosts, moving VMs manually (as they are running off iSCSI NAS) if a host fails? <tear><br> </blockquote> It depends on what you are trying to do.  oVirt and virt-manager solve different problems.  I would say that virt-manager is probably OK for a small setup, but I wouldn't deploy an enterprise solution around it.<br> <br> You have enough gear for a small oVirt setup.  Run with that and add more nodes as you can.  My 2c.<br> <blockquote cite="mid:CAJZXTnpBR1S3p2fxzqWHy39VSrJpynZFvTG7ax-NCZ1QpFJrvQ@mail.gmail.com" type="cite"> <br> Thank you,<br> <br> Nic<br> <br> <br> <br> <div class="gmail_quote">On Sat, Sep 22, 2012 at 4:09 PM, Keith Robertson <span dir="ltr"><<a moz-do-not-send="true" href="mailto:kroberts@redhat.com" target="_blank">kroberts@redhat.com</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div bgcolor="#FFFFFF" text="#000000"> <div class="im"> <div>On 09/22/2012 02:28 PM, Nicolas Chenier wrote:<br> </div> <blockquote type="cite">Question - if oVirt goes down... do the ovirt-nodes and VMs remain up?<br> <br> <br> Keith, how would you set yourself up with these specs:<br> <br> 2 host servers (quad-core xeons with 32gigs of ram)<br> </blockquote> </div> Are you saying that you only have 2 machines in total, or that you have 2 machines that can be dedicated hypervisors (ie. ovirt-node) and a third machine that can be a dedicated manager?<br> <br> If the former then one machine must run some version of *nix compatible with oVirt Manager and, the other machine in this scenario can simply run ovirt-node. <br> <br> If the latter, then you have 1 box dedicated as a manager and 2 boxes as dedicated hypervisors.  This is a fairly basic/good setup.  <br> <div class="im"> <blockquote type="cite">1 iSCSI NAS<br> <br> Starting to think there is no way to achieve HA with this setup? </blockquote> </div> Not with only 2 boxes.  No. <div class="im"><br> <blockquote type="cite">oVirt requires a dedicated machine?<br> </blockquote> </div> Generally, speaking.  Yes.<br> <br> Truly HA setups aren't cheap and people often have different ideas of what constitutes HA.  Offhand I would think that you would need...<br> <br> - 2 boxes for the oVirt manager<br> - Clustering software for the manager to facilitate an active/passive setup.<br> - UPSs (at *least* 2) which can be controlled by clustering software.  Why?  Most clustering SW require a fence device.  These will be your fence devices.<br> - 2 boxes for your hypervisors (ie. ovirt-nodes).  This will facilitate fail-over from one node to the other.<br> <br> HA isn't cheap and can't usually be done on 2 boxes, IMO unless you're failing over a single app. <div> <div class="h5"><br> <br> <br> <blockquote type="cite"> <br> Thank you!<br> <br> Nic<br> <br> PS. Could oVirt be integrated into ovirt-node on every server?<br> <br> <br> <br> <div class="gmail_quote">On Sat, Sep 22, 2012 at 2:16 PM, Keith Robertson <span dir="ltr"><<a moz-do-not-send="true" href="mailto:kroberts@redhat.com" target="_blank">kroberts@redhat.com</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div bgcolor="#FFFFFF" text="#000000"> <div> <div>On 09/22/2012 01:09 PM, Nicolas Chenier wrote:<br> </div> <blockquote type="cite">Hi Alan,<br> <br> I have oVirt running in a VM off my Desktop (Fedora 17 w/ KVM & Virt-Manager) off my iSCSI NAS. <br> <br> I've attached Server #1 as my first host (it's running ovirt-node).<br> <br> In the process of setting up my storage domains. I have a few questions to the experts out there:<br> <br> 1) How do I add my CD .ISOs to setup new VMs? Create iSCSI storage domain? But then how do I copy my ISOs to it?<br> </blockquote> </div> Create an ISO storage domain and use the ovirt-iso-uploader to add your ISOs and .vfd files into that domain. <div><br> <blockquote type="cite"><br> 2) Can I run my oVirt VM from ovirt-node machine, without running it in oVirt (ie. setup iSCSI in virt-manager (as it is now) and run oVirt from virt-manager... then I can manage my hosts through that ovirt VM?<br> </blockquote> </div> Huh?  You could run the oVirt Manager from a VM managed by virt-manager... yes.  Running the oVirt manager inside a VM on a hypervisor (ie. ovirt-node) controlled by that same manager isn't supported AFAIK because the mgr. could get fenced.  <br> <br> To summarize, you can pretty much run the oVirt manager on any supported OS as long as that OS instance isn't running on a hypervisor (ie. ovirt-node) controlled by *that* manager.<br> <br> If you haven't noticed the vocabulary to describe the various components can get a little confusing. ;)  <br> <br> <br> <blockquote type="cite"> <div> <br> Not sure if I'm making myself clear... but I'm making progress. I think as long as you are not managing your oVirt vm through oVirt itself, the solution should work fine! Just trying to see if I can get that done on an ovirt-node machine...<br> <br> Thank you,<br> <br> Nic<br> <br> <br> <div class="gmail_quote">On Fri, Sep 21, 2012 at 3:31 PM, Alan Johnson <span dir="ltr"><<a moz-do-not-send="true" href="mailto:alan@datdec.com" target="_blank">alan@datdec.com</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div class="gmail_quote"> <div>On Wed, Sep 12, 2012 at 9:22 PM, Nicolas Chenier <span dir="ltr"><<a moz-do-not-send="true" href="mailto:dascope@gmail.com" target="_blank">dascope@gmail.com</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div>I was under the impression that my oVirt VM would show up in oVirt and that I could manage it through there...</div> <div> </div> <div>What you're saying is that I should just run it seperatly and not manage it with itself (oVirt)? keep it on my shared storage so that I can run it off any of the 2 servers? But not manage it with oVirt (itself). I think I'm starting to get it now...</div> <div> </div> <div>I really appreciate your help!</div> <div> </div> <div>Nic</div> </blockquote> <div><br> </div> </div> <div>Nic, how did you make out with this?  I'm looking to do the same thing and am wondering if there is any risk in running the engine on a VM managed by the same engine, as you were suggesting before.  Did you give this a shot?</div> <div><br> </div> <div>Itamar, why did you steer Nic away from this?</div> <font color="#663366"><font face="verdana,sans-serif"><br clear="all"> </font></font>_______________<span><font color="#888888"><br> Alan Johnson<br> <a moz-do-not-send="true" href="mailto:alan@datdec.com" target="_blank">alan@datdec.com</a><br> <div> </div> </font></span></div> </blockquote> </div> <br> <br> <fieldset></fieldset> <br> </div> <div> <pre>_______________________________________________ Users mailing list <a moz-do-not-send="true" href="mailto:Users@ovirt.org" target="_blank">Users@ovirt.org</a> <a moz-do-not-send="true" href="http://lists.ovirt.org/mailman/listinfo/users" target="_blank">http://lists.ovirt.org/mailman/listinfo/users</a> </pre> </div> </blockquote> <br> <br> </div> </blockquote> </div> <br> </blockquote> <br> </div> </div> </div> </blockquote> </div> <br> </blockquote> <br> <br> </body> </html> --------------070709080206000602010905--

On 10/06/2012 09:48 PM, Nicolas Chenier wrote:

Are there any issues running oVirt at a remote location than the oVirt-node machines?

I have a site-to-site VPN, ovirt-node machines at one end and an ovirt machine at the other.

Is there a lot of traffic (bandwidth) use between ovirt and ovirt-node machines? My iSCSI NAS is with my ovirt-node machines.

I have 10mbit down and 1 mbit up at my remote site running the ovirt server... my ovirt-nodes and nas are at a colocation centre.

we have deployments running a manager on one site and nodes on the other site. i recommend checking the traffic bandwidth for your case. the node traffic is mainly affected by number of VMs per node, unless you have a large number of VMs per node you should be fine. (we do need to optimize the traffic between nodes to engine a bit)

Much appreciated!

On Sun, Sep 23, 2012 at 9:34 AM, Keith Robertson <kroberts@redhat.com <mailto:kroberts@redhat.com>> wrote:

On 09/22/2012 05:35 PM, Nicolas Chenier wrote:

...

*Question 1 - if oVirt goes down... do the ovirt-nodes and VMs remain up?* Can someone answer this please? :-)

If the oVirt manager (ie. the web application running inside AS7) loses connectivity to the node, the VM's on that node will keep running. You should know; however, that the general design is for the manager to remain in contact with the nodes.

...

Due to budget and space constraints, I currently have 2 servers total.

What if I did the following:

Server 1) Fedora 17 with KVM/Virt-manager... running oVirt as a VM (through virt-manager) off the iSCSI NAS.

Fine

...

Server 2) oVirt-node machine - one and only host machine for oVirt running on Server 1).

Again fine.

...

With this setup I can run VMs from iSCSI on oVirt-node Server 2).

Yes, nearly identical to my setup.

...

In the event that oVirt-node Server 2) goes down... is anything stopping me from setting up my VMs on Server 1) with the iSCSI storage from the NAS and run my VMs without oVirt through virt-manager?

Yes, I don't think that will work out of the box. It could probably be done but it would require some manual steps.

...

This would give me some form of redundancy (requiring manual intervention) in the event that my ovirt-node went down... is this a feasible setup?

See previous comment.

...

To make it even more redundant, maybe I should do the following with Server 2)

Install Fedora 17 with KVM/Virt-Manager, and VDSM... in the event that Server 1) fails... I can run my VMs on Server 2) through virt-manager?

Should I just drop oVirt for now and run virt-manager on my 2 hosts, moving VMs manually (as they are running off iSCSI NAS) if a host fails? <tear>

It depends on what you are trying to do. oVirt and virt-manager solve different problems. I would say that virt-manager is probably OK for a small setup, but I wouldn't deploy an enterprise solution around it.

You have enough gear for a small oVirt setup. Run with that and add more nodes as you can. My 2c.

...

Thank you,

Nic

On Sat, Sep 22, 2012 at 4:09 PM, Keith Robertson <kroberts@redhat.com <mailto:kroberts@redhat.com>> wrote:

On 09/22/2012 02:28 PM, Nicolas Chenier wrote:

...

Question - if oVirt goes down... do the ovirt-nodes and VMs remain up?

Keith, how would you set yourself up with these specs:

2 host servers (quad-core xeons with 32gigs of ram)

Are you saying that you only have 2 machines in total, or that you have 2 machines that can be dedicated hypervisors (ie. ovirt-node) and a third machine that can be a dedicated manager?

If the former then one machine must run some version of *nix compatible with oVirt Manager and, the other machine in this scenario can simply run ovirt-node.

If the latter, then you have 1 box dedicated as a manager and 2 boxes as dedicated hypervisors. This is a fairly basic/good setup.

...

1 iSCSI NAS

Starting to think there is no way to achieve HA with this setup?

Not with only 2 boxes. No.

...

oVirt requires a dedicated machine?

Generally, speaking. Yes.

Truly HA setups aren't cheap and people often have different ideas of what constitutes HA. Offhand I would think that you would need...

- 2 boxes for the oVirt manager - Clustering software for the manager to facilitate an active/passive setup. - UPSs (at *least* 2) which can be controlled by clustering software. Why? Most clustering SW require a fence device. These will be your fence devices. - 2 boxes for your hypervisors (ie. ovirt-nodes). This will facilitate fail-over from one node to the other.

HA isn't cheap and can't usually be done on 2 boxes, IMO unless you're failing over a single app.

...

Thank you!

Nic

PS. Could oVirt be integrated into ovirt-node on every server?

On Sat, Sep 22, 2012 at 2:16 PM, Keith Robertson <kroberts@redhat.com <mailto:kroberts@redhat.com>> wrote:

On 09/22/2012 01:09 PM, Nicolas Chenier wrote:

...

Hi Alan,

I have oVirt running in a VM off my Desktop (Fedora 17 w/ KVM & Virt-Manager) off my iSCSI NAS.

I've attached Server #1 as my first host (it's running ovirt-node).

In the process of setting up my storage domains. I have a few questions to the experts out there:

1) How do I add my CD .ISOs to setup new VMs? Create iSCSI storage domain? But then how do I copy my ISOs to it?

Create an ISO storage domain and use the ovirt-iso-uploader to add your ISOs and .vfd files into that domain.

...

2) Can I run my oVirt VM from ovirt-node machine, without running it in oVirt (ie. setup iSCSI in virt-manager (as it is now) and run oVirt from virt-manager... then I can manage my hosts through that ovirt VM?

Huh? You could run the oVirt Manager from a VM managed by virt-manager... yes. Running the oVirt manager inside a VM on a hypervisor (ie. ovirt-node) controlled by that same manager isn't supported AFAIK because the mgr. could get fenced.

To summarize, you can pretty much run the oVirt manager on any supported OS as long as that OS instance isn't running on a hypervisor (ie. ovirt-node) controlled by *that* manager.

If you haven't noticed the vocabulary to describe the various components can get a little confusing. ;)

...

Not sure if I'm making myself clear... but I'm making progress. I think as long as you are not managing your oVirt vm through oVirt itself, the solution should work fine! Just trying to see if I can get that done on an ovirt-node machine...

Thank you,

Nic

On Fri, Sep 21, 2012 at 3:31 PM, Alan Johnson <alan@datdec.com <mailto:alan@datdec.com>> wrote:

On Wed, Sep 12, 2012 at 9:22 PM, Nicolas Chenier <dascope@gmail.com <mailto:dascope@gmail.com>> wrote:

I was under the impression that my oVirt VM would show up in oVirt and that I could manage it through there... What you're saying is that I should just run it seperatly and not manage it with itself (oVirt)? keep it on my shared storage so that I can run it off any of the 2 servers? But not manage it with oVirt (itself). I think I'm starting to get it now... I really appreciate your help! Nic

Nic, how did you make out with this? I'm looking to do the same thing and am wondering if there is any risk in running the engine on a VM managed by the same engine, as you were suggesting before. Did you give this a shot?

Itamar, why did you steer Nic away from this?

_______________ Alan Johnson alan@datdec.com <mailto:alan@datdec.com>

_______________________________________________ Users mailing list Users@ovirt.org <mailto:Users@ovirt.org> http://lists.ovirt.org/mailman/listinfo/users

_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users