Hello, I'm French, I work for the French administration and this is my first message on this list... At the moment, we use VMware (vSphere 5.1/5.5, cloud edition) for our virtualized complex infrastructures. I've discovered recently that oVirt offers enhanced features, closed to the ones of VMware. Is the product sufficiently advanced yet ? I don't know and I hope you'll be able to help me ;-) My first question is about hypervisor... In VMware infrastructures, we use a microkernel since the version 4 (before, it was an hypervisor based on a RedHat core). On the oVirt site, I can download ovirt-engine to install it over Debian/RedHat/CentOS, etc... But it seems to be less optimised because some ressources are used by the underlying OS... Can you explain me differences between this technology and the VMware one ? Thank you. David.
This is a multi-part message in MIME format. --------------000605000905030708080202 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit On 08/07/2014 09:45 AM, David BERCOT wrote:
Hello,
I'm French, I work for the French administration and this is my first message on this list...
At the moment, we use VMware (vSphere 5.1/5.5, cloud edition) for our virtualized complex infrastructures.
I've discovered recently that oVirt offers enhanced features, closed to the ones of VMware. Is the product sufficiently advanced yet ? I don't know and I hope you'll be able to help me ;-) Welcome David,
We find it sufficiently advanced, since 3.5 is nearing release most of our wishlist has been taken care off ;-) Check out the case stories like (http://www.ovirt.org/Brussels_Airport_Case_Study)
My first question is about hypervisor... In VMware infrastructures, we use a microkernel since the version 4 (before, it was an hypervisor based on a RedHat core).
On the oVirt site, I can download ovirt-engine to install it over Debian/RedHat/CentOS, etc... But it seems to be less optimised because some ressources are used by the underlying OS... Ovirt engine is the management part (like vCenter), there is no need for it to be that optimized as it's not running VM's itself. What you're talking about is ovirt node: http://www.ovirt.org/Node Can you explain me differences between this technology and the VMware one ? A bit outdated:
http://www.siliconloons.com/open-source-cloud-and-virtualization-terminology... Some more reading: Virtual data center management with oVirt 3.4 http://lwn.net/Articles/600370/
Thank you.
David. _______________________________________________
That's my 2c. Kind regards, Jorick Astrego Netbulae B.V. --------------000605000905030708080202 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 text="#000000" bgcolor="#FFFFFF"> <br> <div class="moz-cite-prefix">On 08/07/2014 09:45 AM, David BERCOT wrote:<br> </div> <blockquote cite="mid:20140807094546.6a7fad4e@debian-david" type="cite"> <pre wrap="">Hello, I'm French, I work for the French administration and this is my first message on this list... At the moment, we use VMware (vSphere 5.1/5.5, cloud edition) for our virtualized complex infrastructures. I've discovered recently that oVirt offers enhanced features, closed to the ones of VMware. Is the product sufficiently advanced yet ? I don't know and I hope you'll be able to help me ;-)</pre> </blockquote> Welcome David,<br> <br> <br> We find it sufficiently advanced, since 3.5 is nearing release most of our wishlist has been taken care off ;-)<br> Check out the case stories like (<a class="moz-txt-link-freetext" href="http://www.ovirt.org/Brussels_Airport_Case_Study">http://www.ovirt.org/Brussels_Airport_Case_Study</a>)<br> <br> <blockquote cite="mid:20140807094546.6a7fad4e@debian-david" type="cite"> <pre wrap="">My first question is about hypervisor... In VMware infrastructures, we use a microkernel since the version 4 (before, it was an hypervisor based on a RedHat core). On the oVirt site, I can download ovirt-engine to install it over Debian/RedHat/CentOS, etc... But it seems to be less optimised because some ressources are used by the underlying OS... </pre> </blockquote> Ovirt engine is the management part (like vCenter), there is no need for it to be that optimized as it's not running VM's itself.<br> What you're talking about is ovirt node: <a class="moz-txt-link-freetext" href="http://www.ovirt.org/Node">http://www.ovirt.org/Node</a><br> <blockquote cite="mid:20140807094546.6a7fad4e@debian-david" type="cite"> <pre wrap=""> Can you explain me differences between this technology and the VMware one ?</pre> </blockquote> A bit outdated:<br> <br> <a class="moz-txt-link-freetext" href="http://www.siliconloons.com/open-source-cloud-and-virtualization-terminology-for-vmware-users/">http://www.siliconloons.com/open-source-cloud-and-virtualization-terminology-for-vmware-users/</a><br> <br> Some more reading:<br> <br> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> Virtual data center management with oVirt 3.4<br> <a class="moz-txt-link-freetext" href="http://lwn.net/Articles/600370/">http://lwn.net/Articles/600370/</a><br> <br> <blockquote cite="mid:20140807094546.6a7fad4e@debian-david" type="cite"> <pre wrap=""> Thank you. David. _______________________________________________ </pre> </blockquote> That's my 2c.<br> <br> Kind regards,<br> <br> Jorick Astrego<br> Netbulae B.V.<br> <br> </body> </html> --------------000605000905030708080202--
Le Thu, 07 Aug 2014 10:56:35 +0200, Jorick Astrego <j.astrego@netbulae.eu> a écrit :
On 08/07/2014 09:45 AM, David BERCOT wrote:
Hello,
I'm French, I work for the French administration and this is my first message on this list...
At the moment, we use VMware (vSphere 5.1/5.5, cloud edition) for our virtualized complex infrastructures.
I've discovered recently that oVirt offers enhanced features, closed to the ones of VMware. Is the product sufficiently advanced yet ? I don't know and I hope you'll be able to help me ;-) Welcome David,
Thank you ;-)
We find it sufficiently advanced, since 3.5 is nearing release most of our wishlist has been taken care off ;-) Check out the case stories like (http://www.ovirt.org/Brussels_Airport_Case_Study)
Yes, it is an interesting article even if I did not understand the Openstack point because, if I'm not wrong, Openstack can run over any virtualization solution, VMware, KVM, etc...
My first question is about hypervisor... In VMware infrastructures, we use a microkernel since the version 4 (before, it was an hypervisor based on a RedHat core).
On the oVirt site, I can download ovirt-engine to install it over Debian/RedHat/CentOS, etc... But it seems to be less optimised because some ressources are used by the underlying OS... Ovirt engine is the management part (like vCenter), there is no need for it to be that optimized as it's not running VM's itself.
Yes, I saw my mistake between oVirt engine and oVirt node ;-) My really question was : is it a good idea to run the oVirt node over another OS ? It would be more performant to run the oVirt node directly over the hardware, like ESXi... May be it is in the roadmap ? And I have another question : is there something like VMFS to store the VM in the SAN ? It's more performant to use FC than NFS shares... Thank you. David.
What you're talking about is ovirt node: http://www.ovirt.org/Node
Can you explain me differences between this technology and the VMware one ? A bit outdated:
http://www.siliconloons.com/open-source-cloud-and-virtualization-terminology...
Some more reading:
Virtual data center management with oVirt 3.4 http://lwn.net/Articles/600370/
Thank you.
David. _______________________________________________
That's my 2c.
Kind regards,
Jorick Astrego Netbulae B.V.
Il 07/ago/2014 11:44 "David BERCOT" <ovirt <ovirt@bercot.org>@ <ovirt@bercot.org>bercot.org <ovirt@bercot.org>> ha scritto:
My really question was : is it a good idea to run the oVirt node over another OS ? It would be more performant to run the oVirt node directly over the hardware, like ESXi... May be it is in the roadmap ?
VMware says esxi is a bare-metal hypervisor and there is not an underlying os. Someone else says it is based on vmkernel operating system ( where vmkernel is defined as a posix-like operating system). In my opinion the oVirt node is to be intended something like ESXi: an os with the smallest possible footprint, dedicated to run as a KVM hypervisor. The difference being that it is based on Linux and not developed from scratch. Gianluca
FYI: actually the vmware kernel leverages many open source drivers from the linux kernel and I highly suspect that it is in fact a custom linux kernel. some evidence that supports this view is the recent attempt of vmware to join the linux-distros mailinglist to get early access to vulnerabilities in open source code. you can just join this list if you offer a kind of "linux" distribution (or something very close to it). here is a thread for further reading on the case: http://seclists.org/oss-sec/2014/q2/403 PS: regarding ovirt-node: it's actually a very trimmed down linux system, just enough to act as an hypervisor, so it's bare metal virtualization (I would even argue that there is no such thing as a type 1 hypervisor, because if you talk about type 1 hypervisors the hypervisor itself is the operating system kernel, which is also the case for kvm, as it is a linux kernel module). HTH Am 07.08.2014 14:03, schrieb Gianluca Cecchi:
VMware says esxi is a bare-metal hypervisor and there is not an underlying os. Someone else says it is based on vmkernel operating system ( where vmkernel is defined as a posix-like operating system). In my opinion the oVirt node is to be intended something like ESXi: an os with the smallest possible footprint, dedicated to run as a KVM hypervisor. The difference being that it is based on Linux and not developed from scratch.
-- Mit freundlichen Grüßen / Regards Sven Kieske Systemadministrator Mittwald CM Service GmbH & Co. KG Königsberger Straße 6 32339 Espelkamp T: +49-5772-293-100 F: +49-5772-293-333 https://www.mittwald.de Geschäftsführer: Robert Meyer St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen
Le Thu, 7 Aug 2014 12:16:34 +0000, Sven Kieske <S.Kieske@mittwald.de> a écrit :
FYI:
actually the vmware kernel leverages many open source drivers from the linux kernel and I highly suspect that it is in fact a custom linux kernel.
some evidence that supports this view is the recent attempt of vmware to join the linux-distros mailinglist to get early access to vulnerabilities in open source code.
you can just join this list if you offer a kind of "linux" distribution (or something very close to it).
here is a thread for further reading on the case: http://seclists.org/oss-sec/2014/q2/403
PS: regarding ovirt-node: it's actually a very trimmed down linux system, just enough to act as an hypervisor, so it's bare metal virtualization (I would even argue that there is no such thing as a type 1 hypervisor, because if you talk about type 1 hypervisors the hypervisor itself is the operating system kernel, which is also the case for kvm, as it is a linux kernel module).
If I understand well, oVirt-node is very very close to ESXi (which is good news ;-)). But to have such a "bare metal virtualization", we have not to install a "complete" OS (like RH, Fedora, Debian, etc...) and then to add oVirt-node packages ??? It should be a very light kernel with only oVirt-node (KVM ?) modules/packages, no ? There is only this part I do not understand !?!? Thank you. David.
--=-pp1MDZ8qgTx8UvYv87PC Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello David, On Do, 2014-08-07 at 14:54 +0200, David BERCOT wrote:
Le Thu, 7 Aug 2014 12:16:34 +0000, Sven Kieske <S.Kieske@mittwald.de> a =C3=A9crit :
FYI:
actually the vmware kernel leverages many open source drivers from the linux kernel and I highly suspect that it is in fact a custom linux kernel.
some evidence that supports this view is the recent attempt of vmware to join the linux-distros mailinglist to get early access to vulnerabilities in open source code.
you can just join this list if you offer a kind of "linux" distribution (or something very close to it).
here is a thread for further reading on the case: http://seclists.org/oss-sec/2014/q2/403
PS: regarding ovirt-node: it's actually a very trimmed down linux system, just enough to act as an hypervisor, so it's bare metal virtualization (I would even argue that there is no such thing as a type 1 hypervisor, because if you talk about type 1 hypervisors the hypervisor itself is the operating system kernel, which is also the case for kvm, as it is a linux kernel module). =20 If I understand well, oVirt-node is very very close to ESXi (which is good news ;-)). But to have such a "bare metal virtualization", we have not to install a "complete" OS (like RH, Fedora, Debian, etc...) and then to add oVirt-node packages ??? It should be a very light kernel with only oVirt-node (KVM ?) modules/packages, no ? First, I second Sven's view, there is no such thing like a type 1 HV (so 'hardware' only). I used oVirt node 3.4 and it works really well and sable. If you compare it with ESXi, you will feel it is very similar (even the screen telling you system basics if you attach a monitor to it).
ovirt node was developed later on, to you basically have two options: - The 'classic' option: install a basic os (centos6 minimal or fedora 19 minimal) and install the ovirt packages via yum, then run ovit node setup; done. - run ovirt node iso, install it to disk. This leaves you with a system wich has to be managed from ovirt engine, because all changes you make manually do not survive a reboot (normally). While I think using ovirt node is the best option for deploying HV-nodes there is one major drawback: It does not support hosted-engine-ha atm; but I think this feature will make it into ovirt node 3.5.
There is only this part I do not understand !?!? So bottom line, ovirt node is the same as option 1; but more tailored to complete management from ovirt enginge. =20 Thank you. =20 David. _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
--=20 Daniel Helgenberger=20 m box bewegtbild GmbH=20 P: +49/30/2408781-22 F: +49/30/2408781-10 ACKERSTR. 19=20 D-10115 BERLIN=20 www.m-box.de www.monkeymen.tv=20 Gesch=C3=A4ftsf=C3=BChrer: Martin Retschitzegger / Michaela G=C3=B6llner Handeslregister: Amtsgericht Charlottenburg / HRB 112767=20 --=-pp1MDZ8qgTx8UvYv87PC Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIINtjCCBBYw ggL+oAMCAQICCwQAAAAAAS9O4S9SMA0GCSqGSIb3DQEBBQUAMFcxCzAJBgNVBAYTAkJFMRkwFwYD VQQKExBHbG9iYWxTaWduIG52LXNhMRAwDgYDVQQLEwdSb290IENBMRswGQYDVQQDExJHbG9iYWxT aWduIFJvb3QgQ0EwHhcNMTEwNDEzMTAwMDAwWhcNMTkwNDEzMTAwMDAwWjBUMQswCQYDVQQGEwJC RTEZMBcGA1UEChMQR2xvYmFsU2lnbiBudi1zYTEqMCgGA1UEAxMhR2xvYmFsU2lnbiBQZXJzb25h bFNpZ24gMiBDQSAtIEcyMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwWtB+TXs+BJ9 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Le Thu, 7 Aug 2014 14:03:15 +0200, Gianluca Cecchi <gianluca.cecchi@gmail.com> a écrit :
Il 07/ago/2014 11:44 "David BERCOT" <ovirt <ovirt@bercot.org>@ <ovirt@bercot.org>bercot.org <ovirt@bercot.org>> ha scritto:
My really question was : is it a good idea to run the oVirt node over another OS ? It would be more performant to run the oVirt node directly over the hardware, like ESXi... May be it is in the roadmap ?
VMware says esxi is a bare-metal hypervisor and there is not an underlying os. Someone else says it is based on vmkernel operating system ( where vmkernel is defined as a posix-like operating system). In my opinion the oVirt node is to be intended something like ESXi: an os with the smallest possible footprint, dedicated to run as a KVM hypervisor. The difference being that it is based on Linux and not developed from scratch.
It is OK for me to have an oVirt node similar to ESXi, except that it is based on Linux. But on the oVirt site, I've found oVirt node packages to install over RH, Fedora, Debian, CentOS, etc... Is there a "dedicated" oVirt-node ISO, based on the Linux kernel, but optimized for KVM, without other kernel modules we can see on RH, Fedora, Debian, CentOS, etc... ? Thank you. David.
I don't actually use it myself so take my information with a grain of salt, as it might not be 100% accurate. afaik this is the current stable ovirt-node iso: http://resources.ovirt.org/releases/3.4/iso/ovirt-node-iso-3.4-20140423.0.el... it comes in 2 flavors: el6 based and fedora based. so it's actually a trimmed down el6/fedora version I cc'ed fabian who can give more information on the case, because he is the maintainer of the node project (i hope this is still correct). HTH Am 07.08.2014 14:48, schrieb David BERCOT:
Is there a "dedicated" oVirt-node ISO, based on the Linux kernel, but optimized for KVM, without other kernel modules we can see on RH, Fedora, Debian, CentOS, etc... ?
-- Mit freundlichen Grüßen / Regards Sven Kieske Systemadministrator Mittwald CM Service GmbH & Co. KG Königsberger Straße 6 32339 Espelkamp T: +49-5772-293-100 F: +49-5772-293-333 https://www.mittwald.de Geschäftsführer: Robert Meyer St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen
Le Thu, 7 Aug 2014 12:55:40 +0000, Sven Kieske <S.Kieske@mittwald.de> a écrit :
I don't actually use it myself so take my information with a grain of salt, as it might not be 100% accurate.
afaik this is the current stable ovirt-node iso:
http://resources.ovirt.org/releases/3.4/iso/ovirt-node-iso-3.4-20140423.0.el...
it comes in 2 flavors: el6 based and fedora based.
so it's actually a trimmed down el6/fedora version
I cc'ed fabian who can give more information on the case, because he is the maintainer of the node project (i hope this is still correct).
Ah, great !!! And is there a Debian flavor ? It is my favorite distribution ;-) Thank you. David.
Am 07.08.2014 15:10, schrieb David BERCOT:
Ah, great !!! And is there a Debian flavor ? It is my favorite distribution ;-)
Not yet, and I don't know if it is on the roadmap. you could maybe create your own, it's basically this workflow: install $distro throw out all unneeded stuff install virt stuff (libvirt+vdsm) apply hardening (selinux etc) create iso I go with centos minimal and customize that myself, works really well. I don't know if vdsm is already complete platform independent (afaik it should be). the initial development was all on fedora and el6, so this is where it runs best atm. but I know for sure there are plans to make it distribution agnostic, but I don't know if this includes a pre-created iso for ovirt-node based on debian or gentoo. maybe fabian can shed some light on the future plans. alon can maybe give some insight into how distribution agnostic ovirt already is and what future plans are, thus cc'ing them. -- Mit freundlichen Grüßen / Regards Sven Kieske Systemadministrator Mittwald CM Service GmbH & Co. KG Königsberger Straße 6 32339 Espelkamp T: +49-5772-293-100 F: +49-5772-293-333 https://www.mittwald.de Geschäftsführer: Robert Meyer St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen
----- Original Message -----
Am 07.08.2014 15:10, schrieb David BERCOT:
Ah, great !!! And is there a Debian flavor ?
No. Currently not. But Node became more stable over the last months, and you might want to try this snapshot build: http://resources.ovirt.org/pub/ovirt-3.5-pre/iso/ovirt-node-iso-3.5.0.ovirt3...
It is my favorite distribution ;-)
Not yet, and I don't know if it is on the roadmap. you could maybe create your own, it's basically this workflow: install $distro throw out all unneeded stuff install virt stuff (libvirt+vdsm) apply hardening (selinux etc) create iso
I go with centos minimal and customize that myself, works really well.
I don't know if vdsm is already complete platform independent (afaik it should be).
the initial development was all on fedora and el6, so this is where it runs best atm.
but I know for sure there are plans to make it distribution agnostic, but I don't know if this includes a pre-created iso for ovirt-node based on debian or gentoo.
maybe fabian can shed some light on the future plans.
The current Node can really only be created for Fedora related distrios, so CentOS, RHEL and Fedora itself. The reason for this is that all parts "the build process" is tailored around Fedora related tools. Namely kickstarts, and lviecd-tools. We are currently thinking about how we can change Node and make it more friendly, the distro agnostic idea also goes into this thoughts - but there is nothing concrete on that front yet. That's it from the Node side. - fabian
alon can maybe give some insight into how distribution agnostic ovirt already is and what future plans are, thus cc'ing them.
-- Mit freundlichen Grüßen / Regards
Sven Kieske
Systemadministrator Mittwald CM Service GmbH & Co. KG Königsberger Straße 6 32339 Espelkamp T: +49-5772-293-100 F: +49-5772-293-333 https://www.mittwald.de Geschäftsführer: Robert Meyer St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen
Le Thu, 7 Aug 2014 10:29:20 -0400 (EDT), Fabian Deutsch <fdeutsch@redhat.com> a écrit :
----- Original Message -----
Am 07.08.2014 15:10, schrieb David BERCOT:
Ah, great !!! And is there a Debian flavor ?
No. Currently not. But Node became more stable over the last months, and you might want to try this snapshot build: http://resources.ovirt.org/pub/ovirt-3.5-pre/iso/ovirt-node-iso-3.5.0.ovirt3...
It is my favorite distribution ;-)
Not yet, and I don't know if it is on the roadmap. you could maybe create your own, it's basically this workflow: install $distro throw out all unneeded stuff install virt stuff (libvirt+vdsm) apply hardening (selinux etc) create iso
I go with centos minimal and customize that myself, works really well.
I don't know if vdsm is already complete platform independent (afaik it should be).
the initial development was all on fedora and el6, so this is where it runs best atm.
but I know for sure there are plans to make it distribution agnostic, but I don't know if this includes a pre-created iso for ovirt-node based on debian or gentoo.
maybe fabian can shed some light on the future plans.
The current Node can really only be created for Fedora related distrios, so CentOS, RHEL and Fedora itself. The reason for this is that all parts "the build process" is tailored around Fedora related tools. Namely kickstarts, and lviecd-tools.
We are currently thinking about how we can change Node and make it more friendly, the distro agnostic idea also goes into this thoughts - but there is nothing concrete on that front yet.
That's it from the Node side.
- fabian
Thank you for all these answers. I'm going to test this soon and I'll tell you about the results... David.
By the way David have you ever done a Red Hat kickstart with the nobase option. You get an OS install thats as stripped down as possible. you can even create a node for ovirt which is smaller than the ESXi install base last I checked. just be aware you will not have many of the tools you would normally expect to see for example bind-utils isn't installed so the box wont have nslookup or dig unless you install it. On Thu, Aug 7, 2014 at 10:44 AM, David BERCOT <ovirt@bercot.org> wrote:
Le Thu, 7 Aug 2014 10:29:20 -0400 (EDT), Fabian Deutsch <fdeutsch@redhat.com> a écrit :
----- Original Message -----
Am 07.08.2014 15:10, schrieb David BERCOT:
Ah, great !!! And is there a Debian flavor ?
No. Currently not. But Node became more stable over the last months, and you might want to try this snapshot build: http://resources.ovirt.org/pub/ovirt-3.5-pre/iso/ovirt-node-iso-3.5.0.ovirt3...
It is my favorite distribution ;-)
Not yet, and I don't know if it is on the roadmap. you could maybe create your own, it's basically this workflow: install $distro throw out all unneeded stuff install virt stuff (libvirt+vdsm) apply hardening (selinux etc) create iso
I go with centos minimal and customize that myself, works really well.
I don't know if vdsm is already complete platform independent (afaik it should be).
the initial development was all on fedora and el6, so this is where it runs best atm.
but I know for sure there are plans to make it distribution agnostic, but I don't know if this includes a pre-created iso for ovirt-node based on debian or gentoo.
maybe fabian can shed some light on the future plans.
The current Node can really only be created for Fedora related distrios, so CentOS, RHEL and Fedora itself. The reason for this is that all parts "the build process" is tailored around Fedora related tools. Namely kickstarts, and lviecd-tools.
We are currently thinking about how we can change Node and make it more friendly, the distro agnostic idea also goes into this thoughts - but there is nothing concrete on that front yet.
That's it from the Node side.
- fabian
Thank you for all these answers.
I'm going to test this soon and I'll tell you about the results...
David. _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Hello, If I understand well, the ISO node is the best solution to have the "smallest" OS, but maybe I will have problems with some functions, like SSH keys, integration with Centreon, etc... Daniel Helgenberger said : "all changes you make manually do not survive a reboot". So, the best option is to install a basic OS (for me, a Debian one), and then, to add oVirt-node packages... Now, let's go ;-) Thank you. David. Le Thu, 7 Aug 2014 13:12:11 -0400, Paul Robert Marino <prmarino1@gmail.com> a écrit :
By the way David have you ever done a Red Hat kickstart with the nobase option. You get an OS install thats as stripped down as possible. you can even create a node for ovirt which is smaller than the ESXi install base last I checked. just be aware you will not have many of the tools you would normally expect to see for example bind-utils isn't installed so the box wont have nslookup or dig unless you install it.
On Thu, Aug 7, 2014 at 10:44 AM, David BERCOT <ovirt@bercot.org> wrote:
Le Thu, 7 Aug 2014 10:29:20 -0400 (EDT), Fabian Deutsch <fdeutsch@redhat.com> a écrit :
----- Original Message -----
Am 07.08.2014 15:10, schrieb David BERCOT:
Ah, great !!! And is there a Debian flavor ?
No. Currently not. But Node became more stable over the last months, and you might want to try this snapshot build: http://resources.ovirt.org/pub/ovirt-3.5-pre/iso/ovirt-node-iso-3.5.0.ovirt3...
It is my favorite distribution ;-)
Not yet, and I don't know if it is on the roadmap. you could maybe create your own, it's basically this workflow: install $distro throw out all unneeded stuff install virt stuff (libvirt+vdsm) apply hardening (selinux etc) create iso
I go with centos minimal and customize that myself, works really well.
I don't know if vdsm is already complete platform independent (afaik it should be).
the initial development was all on fedora and el6, so this is where it runs best atm.
but I know for sure there are plans to make it distribution agnostic, but I don't know if this includes a pre-created iso for ovirt-node based on debian or gentoo.
maybe fabian can shed some light on the future plans.
The current Node can really only be created for Fedora related distrios, so CentOS, RHEL and Fedora itself. The reason for this is that all parts "the build process" is tailored around Fedora related tools. Namely kickstarts, and lviecd-tools.
We are currently thinking about how we can change Node and make it more friendly, the distro agnostic idea also goes into this thoughts - but there is nothing concrete on that front yet.
That's it from the Node side.
- fabian
Thank you for all these answers.
I'm going to test this soon and I'll tell you about the results...
David. _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/user
Le 12/08/2014 11:42, David BERCOT a écrit :
Hello,
If I understand well, the ISO node is the best solution to have the "smallest" OS, but maybe I will have problems with some functions, like SSH keys, integration with Centreon, etc... Daniel Helgenberger said : "all changes you make manually do not survive a reboot".
So, the best option is to install a basic OS (for me, a Debian one), and then, to add oVirt-node packages...
oVirt is not distro-agnostic at all. It is very specificaly designed in the redhat universe (-> rhel, centos, fedora). Love yourself, try it on CentOS. -- Nicolas Ecarnot
On 08/12/2014 01:33 PM, Nicolas Ecarnot wrote:
Le 12/08/2014 11:42, David BERCOT a écrit :
Hello,
If I understand well, the ISO node is the best solution to have the "smallest" OS, but maybe I will have problems with some functions, like SSH keys, integration with Centreon, etc... Daniel Helgenberger said : "all changes you make manually do not survive a reboot".
So, the best option is to install a basic OS (for me, a Debian one), and then, to add oVirt-node packages...
oVirt is not distro-agnostic at all. It is very specificaly designed in the redhat universe (-> rhel, centos, fedora). Love yourself, try it on CentOS.
though if you can help make it better on debian, we'd welcome the help.
On 08/07/2014 03:48 PM, David BERCOT wrote:
Le Thu, 7 Aug 2014 14:03:15 +0200, Gianluca Cecchi <gianluca.cecchi@gmail.com> a écrit :
Il 07/ago/2014 11:44 "David BERCOT" <ovirt <ovirt@bercot.org>@ <ovirt@bercot.org>bercot.org <ovirt@bercot.org>> ha scritto:
My really question was : is it a good idea to run the oVirt node over another OS ? It would be more performant to run the oVirt node directly over the hardware, like ESXi... May be it is in the roadmap ?
VMware says esxi is a bare-metal hypervisor and there is not an underlying os. Someone else says it is based on vmkernel operating system ( where vmkernel is defined as a posix-like operating system). In my opinion the oVirt node is to be intended something like ESXi: an os with the smallest possible footprint, dedicated to run as a KVM hypervisor. The difference being that it is based on Linux and not developed from scratch.
It is OK for me to have an oVirt node similar to ESXi, except that it is based on Linux. But on the oVirt site, I've found oVirt node packages to install over RH, Fedora, Debian, CentOS, etc... Is there a "dedicated" oVirt-node ISO, based on the Linux kernel, but optimized for KVM, without other kernel modules we can see on RH, Fedora, Debian, CentOS, etc... ?
oVirt-node is not installed "on an OS", its an image you install on bare metal. ovirt node is a trimmed down .el6 with the necessary packages to be managed by ovirt. you can choose to use normal .el6/fedora, and use them as hosts via the engine gui, it will deploy/configure these packages as well.
participants (9)
-
Daniel Helgenberger -
David BERCOT -
Fabian Deutsch -
Gianluca Cecchi -
Itamar Heim -
Jorick Astrego -
Nicolas Ecarnot -
Paul Robert Marino -
Sven Kieske