<div dir="ltr">Hi,<div><br>On Tue, Dec 17, 2013 at 3:27 PM, Giancarlo De Filippis <span dir="ltr"><<a href="mailto:gdefilippis@ltbl.it" target="_blank">gdefilippis@ltbl.it</a>></span> wrote:<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div style="font-family:Verdana,Geneva,sans-serif"><p>Is possible to have a doc for installation of front-end as VM in one host (already in one cluster???)</p></div></blockquote><div>The installation of OpenNebula itself will be the same for a physical and a virtual machine.</div>
<div><br></div><div>One thing you need to keep in mind is that OpenNebula assumes full control of the hosts. This means that the scheduler will think that all the memory and cpu of the host is actually available to opennebula VMs, and you may end overcommitting the host running your front-end VM. This may or may not be a problem for you; if it is you can tune the scheduler configuration (hypervisor_mem) [1].</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div style="font-family:Verdana,Geneva,sans-serif"><p>And.... can onenebula manage yourself (manage the vm installed in node)?</p>
</div></blockquote><div>No, OpenNebula will report a "wild VM" inside the host. The VM will not be destroyed or managed in any way, it will be simply ignored.</div></div><div><br></div><div>Regards</div><div class="gmail_extra">
<br></div><div class="gmail_extra">[1] <a href="http://docs.opennebula.org/stable/administration/references/schg.html#configuration">http://docs.opennebula.org/stable/administration/references/schg.html#configuration</a><br clear="all">
<div><div dir="ltr">--<br><div>Carlos Martín, MSc<br>Project Engineer</div>
<div>OpenNebula - Flexible Enterprise Cloud Made Simple<br><div><span style="border-collapse:collapse;color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px"><a href="http://www.OpenNebula.org" target="_blank">www.OpenNebula.org</a> | <a href="mailto:cmartin@opennebula.org" target="_blank">cmartin@opennebula.org</a> | <a href="http://twitter.com/opennebula" target="_blank">@OpenNebula</a></span><span style="border-collapse:collapse;color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px"><a href="mailto:cmartin@opennebula.org" style="color:rgb(42,93,176)" target="_blank"></a></span></div>
</div></div></div>
<br><br><div class="gmail_quote">On Tue, Dec 17, 2013 at 3:27 PM, Giancarlo De Filippis <span dir="ltr"><<a href="mailto:gdefilippis@ltbl.it" target="_blank">gdefilippis@ltbl.it</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<u></u>
<div style="font-family:Verdana,Geneva,sans-serif">
<p>Thanks very much for "rapid" answer.</p>
<p>Is possible to have a doc for installation of front-end as VM in one host (already in one cluster???)</p>
<p>And.... can onenebula manage yourself (manage the vm installed in node)?</p>
<p>We have a shared filesystem with glusterfs</p>
<p>... sorry for my english!! ;)</p>
<p> </p>
<p>Il 17/12/2013 15:10 Steven Timm ha scritto:</p>
<blockquote type="cite" style="padding-left:5px;border-left-color:rgb(16,16,255);border-left-width:2px;border-left-style:solid;margin-left:5px">
<pre><div>OpenNebula Frontend in a VM It can be done, but how well it performs
depends on what data store you
are using. We do it in our development OpenNebula cloud but not
in production yet because we are using a shared image store with
GFS2 and CLVM and it is difficult with our current situation to
get a VM to be a member of a cluster like that, particularly since
our fibre channel host bus adapters don't support pass-through.
We are exploring other options for our data store as we migrate to
OpenNebula 4 series so we can make it work more smoothly.
With NFS data store or ssh-based data store I expect you would not
have any problems.
So right now in the meantime our high availability OpenNebula head nodes
run on bare metal, in an active-passive configuration,
using Red Hat Clustering to manage the high availability of the service.
HA is not perfect--if one head node goes down while a VM operation is in
progress, the other one will not pick it up, but it's good enough for
most thiings.
There was a High Availability guide recently published.
</div><a href="http://opennebula.org/documentation:archives:rel4.2:oneha" target="_blank">http://opennebula.org/documentation:archives:rel4.2:oneha</a>We were doing most of this stuff in version 3 before it was formalized in
the guide.
Steve Timm
On Tue, 17 Dec 2013, Giancarlo De Filippis wrote:</pre><div>
<blockquote type="cite" style="padding-left:5px;border-left-color:rgb(16,16,255);border-left-width:2px;border-left-style:solid;margin-left:5px">Hi all, i'd know if the front-end node can be installed in a VM (in HA mode) onto a compute-node? If yes .... there is some docs? Thanks to all.....</blockquote>
<pre>------------------------------------------------------------------
Steven C. Timm, Ph.D <a href="tel:%28630%29%20840-8525" value="+16308408525" target="_blank">(630) 840-8525</a>
<a href="mailto:timm@fnal.gov" target="_blank">timm@fnal.gov</a> <a href="http://home.fnal.gov/~timm/" target="_blank">http://home.fnal.gov/~timm/</a>
Fermilab Scientific Computing Division, Scientific Computing Services Quad.
Grid and Cloud Services Dept., Associate Dept. Head for Cloud Computing
</pre>
</div></blockquote><span><font color="#888888">
<p> </p>
<div>-- <br>
<p><span style="font-family:'trebuchet ms',geneva;font-size:small"><strong>Giancarlo De Filippis</strong> </span><br><span style="font-family:'trebuchet ms',geneva;font-size:x-small">LTBL S.r.L. <br>Cell. <a href="tel:%2B39%20320%208155325" value="+393208155325" target="_blank">+39 320 8155325</a><br>
Uff. <a href="tel:%2B39%2002%2089604424" value="+390289604424" target="_blank">+39 02 89604424</a><br>Fax <a href="tel:%2B39%2002%2089954500" value="+390289954500" target="_blank">+39 02 89954500</a> </span><br>__________________</p>
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