<div dir="ltr">Hi Yaniv,<div><br></div><div>Yes, the provider gives me access to the power management of the server, by using the user web portal and their java applet (the provider is OVH, in case you have worked with their enviroment). Sadly, their IPMI device is connected to a non accesible network for me, but only accesible by those "web" means of using their java appleat via the web user portal.</div><div><br></div><div>I'm not sure I'm fully understanding your workaround, sorry :/ In any case, if 4.1 brings the functionality described (hope it does!) it would be more than enough for my case. Also, I'll try to "play" with the ipmilan to see if I can get someplace with it. As my main problem is that one of the hosts is suddenly rebooting with apparently no software reason, what I'll try to do is to as soon as the host becomes non-responsive, start sending the "restart" command to it from my hosted-engine (which HA works no matter power fencing). So, after the unexpected rebooting of the host, a controlled reboot should take place allowing the VMs to power on in the other host.</div><div><br></div><div>I'll try to make some time next week to give that a try. Hope it works!!!</div><div><br></div><div>Thank you guys :)</div><div>Seb</div><div>PS: Any estimated release date for 4.1? I never found any info in o-virt project about next releases or "trello" like info to look forward to new functionalities, etc.</div><div><br></div><div><br></div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><br></div><font size="3">Sebastián Greco</font><br><font><span style="color:rgb(255,102,0)">IT Consultant</span></font><div><font color="#000000" size="1">Cloud Computing - Red Hat - VMware - Zimbra</font></div><div><font><span style="font-style:italic"><a href="http://www.essiprojects.com/" style="color:rgb(17,85,204)" target="_blank">www.essiprojects.com</a></span></font></div><div><i><a href="http://www.essiprojects.co.uk" target="_blank">www.essiprojects.co.uk</a></i></div><div><br><span style="font-size:x-small">Pl. Prim, 4-5 Pral 2a · T:</span><font color="#0000ff" style="font-size:x-small"><a>+34 977 221 182</a></font><span style="font-size:x-small"> · M: </span><a style="font-size:x-small">+34 619 985 161</a><span style="font-size:x-small"> F: </span><a style="font-size:x-small">+34 977 230 170</a><span style="font-size:x-small"> · 43001 </span><span style="font-size:x-small;font-weight:bold">Tarragona</span><span style="font-size:x-small"> Spain</span><span style="font-size:x-small"><br></span></div><div><span style="font-size:x-small">120 Pall Mall · T:</span><font color="#0000ff" style="font-size:x-small"><a>+44 207 101 0778</a></font><span style="font-size:x-small"> · </span><span style="font-size:x-small">F: </span><a style="font-size:x-small">+44 843 538 3112</a><span style="font-size:x-small"> · SW1Y 5ED <b>London</b></span><span style="font-size:x-small"> UK</span><font size="1"><i><br></i></font></div></div></div></div></div></div></div></div></div></div>
<br><div class="gmail_quote">On Wed, Nov 30, 2016 at 12:14 PM, Yaniv Kaul <span dir="ltr"><<a href="mailto:ykaul@redhat.com" target="_blank">ykaul@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 dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Nov 29, 2016 at 7:00 AM, Sebastian Greco <span dir="ltr"><<a href="mailto:sgreco@essiprojects.com" target="_blank">sgreco@essiprojects.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><p dir="ltr">Hi Oved!</p>
<p dir="ltr">That's a perfect explanation. Do we have a release date for 4.1? I'm currently working with RHV in my production enviroment.</p>
<p dir="ltr">I may don't have the opportunity to wait for 4.1 to see the light as all my customers VMs (im a web hoster) run on a non HA cluster as my provider does not give me access to the IPMI. If anyone knows anyway to workaround this limitation please do let me know.</p></blockquote><div>Does he give you access to a smart power grid? If so, you can probably use that as a fencing mechanism. If there is no access via IPMI nor power, how can you cycle a stuck host?</div><div><br></div><div>A not very good workaround is to run the VMs themselves pinned to different hosts with a clustering between them. I think it's a bad idea (wasteful), but it is HA. And in some applications it can be active-active.</div><div>You can use virtio-SCSI with passthrough to do SCSI based fencing on a shared disk (quorum disk), for example.</div><div><br></div><div>Y.</div><div> <br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<p dir="ltr">Thanks a lot!<br>
</p><div class="m_-6469553948751352140HOEnZb"><div class="m_-6469553948751352140h5">
<div class="gmail_extra"><br><div class="gmail_quote">El 28 nov. 2016 9:12 p. m., "Oved Ourfali" <<a href="mailto:oourfali@redhat.com" target="_blank">oourfali@redhat.com</a>> escribió:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><p dir="ltr">Hi Sebastian</p>
<p dir="ltr">Currently in case a host is not responding, the only way to make sure no vms are running on it is to fence it, and we only support fencing through power management. </p>
<p dir="ltr">In 4.1 we plan to have limited options for storage fencing. This will mean that if a host is not responding then we try to run HA VMs on another host. If the host is still up then it will fail, as the non responsive host is the one holding the lock. If, however, the host is really dead, then the run VM should succeed. </p>
<p dir="ltr">So, a VM should be up and running, but it might run on a host that has connectivity issues. </p>
<p dir="ltr">Better than what you have now, but still partial. I guess this might get improved during 4.2. </p>
<p dir="ltr">Regards, <br>
Oved <br>
</p>
<div class="gmail_extra"><br><div class="gmail_quote">On Nov 28, 2016 18:29, "Sebastian Greco" <<a href="mailto:sgreco@essiprojects.com" target="_blank">sgreco@essiprojects.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi,<div><br></div><div>Is there any way to have HA in a cluster which hosts have not got configured the "Power Management"?</div><div><br></div><div>In my scenario I have 2 hosts (v4) on OVH and a hosted-engine to manage them. Thing is that OVH does not allow direct communication with the hosts IPMI interface. IPMI is only available in the "customer area" under a java applet as that interface is connected to a non accesible network. So, having no access to this interface I find myself in a situation in which I lost all my HA functionality :(</div><div><br></div><div>Any help would be more than welcome.</div><div><br clear="all"><div><div class="m_-6469553948751352140m_-4252905852264809106m_343261028319026002m_5779575715405596047gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>Sebas</div></div></div></div></div></div></div></div></div></div>
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