<html><body><div style="font-family: times new roman, new york, times, serif; font-size: 12pt; color: #000000"><br><div><br></div><hr id="zwchr"><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From: </b>"Yair Zaslavsky" <yzaslavs@redhat.com><br><b>To: </b>"Gilad Chaplik" <gchaplik@redhat.com><br><b>Cc: </b>"Arthur Berezin" <aberezin@redhat.com>, "users" <users@ovirt.org><br><b>Sent: </b>Monday, May 5, 2014 11:10:10 AM<br><b>Subject: </b>Re: [ovirt-users] oVirt 3.5 : "Power Management Health Check" - feature pages<br><div><br></div><br><div><br></div>----- Original Message -----<br>> From: "Gilad Chaplik" <gchaplik@redhat.com><br>> To: "Yair Zaslavsky" <yzaslavs@redhat.com><br>> Cc: "Arthur Berezin" <aberezin@redhat.com>, "users" <users@ovirt.org><br>> Sent: Monday, May 5, 2014 10:57:01 AM<br>> Subject: Re: [ovirt-users] oVirt 3.5 : "Power Management Health Check" - feature pages<br>> <br>> ----- Original Message -----<br>> > From: "Yair Zaslavsky" <yzaslavs@redhat.com><br>> > To: "Arthur Berezin" <aberezin@redhat.com><br>> > Cc: "Gilad Chaplik" <gchaplik@redhat.com>, "users" <users@ovirt.org><br>> > Sent: Monday, May 5, 2014 6:39:02 AM<br>> > Subject: Re: [ovirt-users] oVirt 3.5 : "Power Management Health Check" -<br>> > feature pages<br>> > <br>> > <br>> > <br>> > ----- Original Message -----<br>> > > From: "Arthur Berezin" <aberezin@redhat.com><br>> > > To: "Gilad Chaplik" <gchaplik@redhat.com><br>> > > Cc: "users" <users@ovirt.org><br>> > > Sent: Sunday, May 4, 2014 5:35:59 PM<br>> > > Subject: Re: [ovirt-users] oVirt 3.5 : "Power Management Health Check" -<br>> > > feature pages<br>> > > <br>> > > In this case engine periodically checks health of hosts' power management<br>> > > as<br>> > > HA relies on it.<br>> > > <br>> > > Arthur<br>> > > <br>> > > ----- Original Message -----<br>> > > <br>> > > > From: "Gilad Chaplik" <gchaplik@redhat.com><br>> > > > To: "Eli Mesika" <emesika@redhat.com><br>> > > > Cc: "users" <users@ovirt.org>, "Arthur Berezin" <aberezin@redhat.com><br>> > > > Sent: Sunday, May 4, 2014 5:26:45 PM<br>> > > > Subject: Re: [ovirt-users] oVirt 3.5 : "Power Management Health Check"<br>> > > > -<br>> > > > feature pages<br>> > > <br>> > > > Hi Eli,<br>> > > <br>> > > > Here is my comment :)<br>> > > > Why engine needs to send the status health check, isn't there any 3rd<br>> > > > parties<br>> > > > that does it, that we can integrate with?<br>> > > > If found, it probably has /less (known) bugs/more features/ and it's<br>> > > > already<br>> > > > written, tested, documented, allows further integration and probably<br>> > > > deals<br>> > > > with scale.<br>> > > <br>> > > > btw, fixed some typos in your pages :-)<br>> > > <br>> > > > Thanks,<br>> > > > Gilad.<br>> > <br>> > Hi, what 3rd party for example do you refer to?<br>> > The PM code already exists at engine,<br>> > And you're also using quartz for scheduling.<br>> > <br>> <br>> Yair,<br>> <br>> You're are raising some good points, but imo the entire host monitoring (inc<br>> getVdsStats, etc.) should be externalized.<br>> There are 2 major issues that we still don't cover:<br>> - No HA for monitoring, who checks the hosts when the engine is down.<br>> - No scale - the engine is a bottle-neck in network and compute.<br>> Although the above is a huge arch change, we need to start somewhere, this<br>> feature sounds like a candidate to introduce it.<br>> <br>> About the examples:<br>> http://sixrevisions.com/tools/10-free-server-network-monitoring-tools-that-kick-ass/<br>> The main goal of the feature if my suggestion is taken, is to select to most<br>> appropriate one.<br>> <br>> Thanks,<br>> Gilad.<br><div><br></div><br>Well, Nagios is being considered to be used or used by Gluster guys.<br>However, it will still require (AFAIK) to code some nagios plugin to perfrom the health check.<br>In addition, you will have to report somehow the state change to engine.<br>IMHO, this a bit of an overkill (look also at the time that the check is run - once in an hour, so it can't be compared to getVmStats).</blockquote><div>+1</div><div>These monitoring tools bring a lot of value, and there are some initial integrations that we might want to look into[1][2].</div><div>But it's an overkill for this RFE - run "PM Check" periodically, in addition to initial PM check at host setup stage.</div><div><br></div><div>[1] https://github.com/monitoring-ui-plugin/development</div><div>[2] http://exchange.nagios.org/directory/Plugins/Operating-Systems/*-Virtual-Environments/Others/check_rhev3/details</div><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><br><div><br></div><br>> <br>> > <br>> > > <br>> > > > ----- Original Message -----<br>> > > > > From: "Eli Mesika" <emesika@redhat.com><br>> > > > > To: "users" <users@ovirt.org><br>> > > > > Cc: "Arthur Berezin" <aberezin@redhat.com><br>> > > > > Sent: Sunday, May 4, 2014 12:18:47 PM<br>> > > > > Subject: [ovirt-users] oVirt 3.5 : "Power Management Health Check" -<br>> > > > > feature pages<br>> > > > ><br>> > > > > Hi<br>> > > > ><br>> > > > > The following wiki pages were added to the "Power Management Health<br>> > > > > Check"<br>> > > > > feature planned for oVirt 3.5<br>> > > > ><br>> > > > > http://www.ovirt.org/Features/PMHealthCheck<br>> > > > > http://www.ovirt.org/Features/Design/DetailedPMHealthCheck<br>> > > > ><br>> > > > > Your comments/questions are mostly welcomed.<br>> > > > ><br>> > > > > Thanks<br>> > > > > Eli Mesika<br>> > > > > _______________________________________________<br>> > > > > Users mailing list<br>> > > > > Users@ovirt.org<br>> > > > > http://lists.ovirt.org/mailman/listinfo/users<br>> > > > ><br>> > > <br>> > > _______________________________________________<br>> > > Users mailing list<br>> > > Users@ovirt.org<br>> > > http://lists.ovirt.org/mailman/listinfo/users<br>> > > <br>> > <br>> <br></blockquote><br></div></body></html>