----- Original Message -----
From: "Arthur Berezin" <aberezin@redhat.com> To: "Gilad Chaplik" <gchaplik@redhat.com> Cc: "users" <users@ovirt.org>, "Yair Zaslavsky" <yzaslavs@redhat.com> 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@redhat.com> To: "Gilad Chaplik" <gchaplik@redhat.com> Cc: "Arthur Berezin" <aberezin@redhat.com>, "users" <users@ovirt.org> 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@redhat.com> To: "Yair Zaslavsky" <yzaslavs@redhat.com> Cc: "Arthur Berezin" <aberezin@redhat.com>, "users" <users@ovirt.org> 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@redhat.com> To: "Arthur Berezin" <aberezin@redhat.com> Cc: "Gilad Chaplik" <gchaplik@redhat.com>, "users" <users@ovirt.org> 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@redhat.com> To: "Gilad Chaplik" <gchaplik@redhat.com> Cc: "users" <users@ovirt.org> 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@redhat.com> To: "Eli Mesika" <emesika@redhat.com> Cc: "users" <users@ovirt.org>, "Arthur Berezin" <aberezin@redhat.com> 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-that-k... 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-Env...
-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@redhat.com> > To: "users" <users@ovirt.org> > Cc: "Arthur Berezin" <aberezin@redhat.com> > 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@ovirt.org > http://lists.ovirt.org/mailman/listinfo/users >
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