Re: [ovirt-users] oVirt 3.5 : "Power Management Health Check" - feature pages

From: "Gilad Chaplik" <gchaplik(a)redhat.com&gt; To: "Arthur Berezin" <aberezin(a)redhat.com&gt; Cc: "users" <users(a)ovirt.org&gt;, "Yair Zaslavsky" <yzaslavs(a)redhat.com&gt; Sent: Monday, May 5, 2014 11:52:25 AM Subject: Re: [ovirt-users] oVirt 3.5 : "Power Management Health Check" - feature pages ----- Original Message ----- > From: "Arthur Berezin" <aberezin(a)redhat.com&gt; > To: "Gilad Chaplik" <gchaplik(a)redhat.com&gt; > Cc: "users" <users(a)ovirt.org&gt;, "Yair Zaslavsky" <yzaslavs(a)redhat.com&gt; > Sent: Monday, May 5, 2014 11:30:24 AM > Subject: Re: [ovirt-users] oVirt 3.5 : "Power Management Health Check" - > feature pages > > ----- Original Message ----- > > > From: "Yair Zaslavsky" <yzaslavs(a)redhat.com&gt; > > To: "Gilad Chaplik" <gchaplik(a)redhat.com&gt; > > Cc: "Arthur Berezin" <aberezin(a)redhat.com&gt;, "users" <users(a)ovirt.org&gt; > > Sent: Monday, May 5, 2014 11:10:10 AM > > Subject: Re: [ovirt-users] oVirt 3.5 : "Power Management Health Check" - > > feature pages > > > ----- Original Message ----- > > > From: "Gilad Chaplik" <gchaplik(a)redhat.com&gt; > > > To: "Yair Zaslavsky" <yzaslavs(a)redhat.com&gt; > > > Cc: "Arthur Berezin" <aberezin(a)redhat.com&gt;, "users" <users(a)ovirt.org&gt; > > > Sent: Monday, May 5, 2014 10:57:01 AM > > > Subject: Re: [ovirt-users] oVirt 3.5 : "Power Management Health Check" > > > - > > > feature pages > > > > > > ----- Original Message ----- > > > > From: "Yair Zaslavsky" <yzaslavs(a)redhat.com&gt; > > > > To: "Arthur Berezin" <aberezin(a)redhat.com&gt; > > > > Cc: "Gilad Chaplik" <gchaplik(a)redhat.com&gt;, "users" <users(a)ovirt.org&gt; > > > > Sent: Monday, May 5, 2014 6:39:02 AM > > > > Subject: Re: [ovirt-users] oVirt 3.5 : "Power Management Health > > > > Check" > > > > - > > > > feature pages > > > > > > > > > > > > > > > > ----- Original Message ----- > > > > > From: "Arthur Berezin" <aberezin(a)redhat.com&gt; > > > > > To: "Gilad Chaplik" <gchaplik(a)redhat.com&gt; > > > > > Cc: "users" <users(a)ovirt.org&gt; > > > > > Sent: Sunday, May 4, 2014 5:35:59 PM > > > > > Subject: Re: [ovirt-users] oVirt 3.5 : "Power Management Health > > > > > Check" > > > > > - > > > > > feature pages > > > > > > > > > > In this case engine periodically checks health of hosts' power > > > > > management > > > > > as > > > > > HA relies on it. > > > > > > > > > > Arthur > > > > > > > > > > ----- Original Message ----- > > > > > > > > > > > From: "Gilad Chaplik" <gchaplik(a)redhat.com&gt; > > > > > > To: "Eli Mesika" <emesika(a)redhat.com&gt; > > > > > > Cc: "users" <users(a)ovirt.org&gt;, "Arthur Berezin" > > > > > > <aberezin(a)redhat.com&gt; > > > > > > Sent: Sunday, May 4, 2014 5:26:45 PM > > > > > > Subject: Re: [ovirt-users] oVirt 3.5 : "Power Management Health > > > > > > Check" > > > > > > - > > > > > > feature pages > > > > > > > > > > > Hi Eli, > > > > > > > > > > > Here is my comment :) > > > > > > Why engine needs to send the status health check, isn't there any > > > > > > 3rd > > > > > > parties > > > > > > that does it, that we can integrate with? > > > > > > If found, it probably has /less (known) bugs/more features/ and > > > > > > it's > > > > > > already > > > > > > written, tested, documented, allows further integration and > > > > > > probably > > > > > > deals > > > > > > with scale. > > > > > > > > > > > btw, fixed some typos in your pages :-) > > > > > > > > > > > Thanks, > > > > > > Gilad. > > > > > > > > Hi, what 3rd party for example do you refer to? > > > > The PM code already exists at engine, > > > > And you're also using quartz for scheduling. > > > > > > > > > > Yair, > > > > > > You're are raising some good points, but imo the entire host monitoring > > > (inc > > > getVdsStats, etc.) should be externalized. > > > There are 2 major issues that we still don't cover: > > > - No HA for monitoring, who checks the hosts when the engine is down. > > > - No scale - the engine is a bottle-neck in network and compute. > > > Although the above is a huge arch change, we need to start somewhere, > > > this > > > feature sounds like a candidate to introduce it. > > > > > > About the examples: > > > http://sixrevisions.com/tools/10-free-server-network-monitoring-tools-tha... > > > The main goal of the feature if my suggestion is taken, is to select to > > > most > > > appropriate one. > > > > > > Thanks, > > > Gilad. > > > Well, Nagios is being considered to be used or used by Gluster guys. > > However, it will still require (AFAIK) to code some nagios plugin to > > perfrom > > the health check. > > In addition, you will have to report somehow the state change to engine. > > 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). > +1 > These monitoring tools bring a lot of value, and there are some initial > integrations that we might want to look into[1][2]. > But it's an overkill for this RFE - run "PM Check" periodically, in > addition > to initial PM check at host setup stage. > > [1] https://github.com/monitoring-ui-plugin/development > [2] > http://exchange.nagios.org/directory/Plugins/Operating-Systems/*-Virtual-... -1 on overkill. As I mentioned, proper monitoring is a huge feature; it should be gradually introduced, IMO this is a good starting point. We can look at it as an overkill _or_ as a jumpborad, that will reduce learning curve and future integrations issues.

Gilad. > > > > > > > > > > > > > > > > > > > ----- Original Message ----- > > > > > > > From: "Eli Mesika" <emesika(a)redhat.com&gt; > > > > > > > To: "users" <users(a)ovirt.org&gt; > > > > > > > Cc: "Arthur Berezin" <aberezin(a)redhat.com&gt; > > > > > > > Sent: Sunday, May 4, 2014 12:18:47 PM > > > > > > > Subject: [ovirt-users] oVirt 3.5 : "Power Management Health > > > > > > > Check" > > > > > > > - > > > > > > > feature pages > > > > > > > > > > > > > > Hi > > > > > > > > > > > > > > The following wiki pages were added to the "Power Management > > > > > > > Health > > > > > > > Check" > > > > > > > feature planned for oVirt 3.5 > > > > > > > > > > > > > > http://www.ovirt.org/Features/PMHealthCheck > > > > > > > http://www.ovirt.org/Features/Design/DetailedPMHealthCheck > > > > > > > > > > > > > > Your comments/questions are mostly welcomed. > > > > > > > > > > > > > > Thanks > > > > > > > Eli Mesika > > > > > > > _______________________________________________ > > > > > > > Users mailing list > > > > > > > Users(a)ovirt.org > > > > > > > http://lists.ovirt.org/mailman/listinfo/users > > > > > > > > > > > > > > > > > _______________________________________________ > > > > > Users mailing list > > > > > Users(a)ovirt.org > > > > > http://lists.ovirt.org/mailman/listinfo/users > > > > > > > > > > > > >