about the power management of the hosts
Everybody, hi: I would like to ask, after the configuration of power management on the host, under what circumstances will work? That is, when does the engine send a request to the IPMI module to restart the power supply? Is it necessary to configure power management modules in the production environment? Are there any risks? Thanks!
If your Host is stale and is having thr SPM role -> some tasks will fail.Also, the VMs on such host won't be recovered unless VM HA is enabled (with storage lease). For prod, I would setup that.Keep in mind that the fencing is issued by another host in the cluster, so you need minimum 2 hosts in a cluster before starting setup & test. Best Regards,Strahil Nikolov On Thu, Sep 16, 2021 at 10:32, Tommy Sway<sz_cuitao@163.com> wrote: <!--#yiv9931229916 _filtered {} _filtered {} _filtered {}#yiv9931229916 #yiv9931229916 p.yiv9931229916MsoNormal, #yiv9931229916 li.yiv9931229916MsoNormal, #yiv9931229916 div.yiv9931229916MsoNormal {margin:0cm;text-align:justify;text-justify:inter-ideograph;font-size:10.5pt;}#yiv9931229916 span.yiv9931229916EmailStyle17 {color:windowtext;}#yiv9931229916 .yiv9931229916MsoChpDefault {}#yiv9931229916 _filtered {}#yiv9931229916 div.yiv9931229916WordSection1 {}--> Everybody, hi: I would like to ask, after the configuration of power management on the host, under what circumstances will work? That is, when does the engine send a request to the IPMI module to restart the power supply? Is it necessary to configure power management modules in the production environment? Are there any risks? Thanks! _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/C3FVP7FH57KOYW...
Can somebody explain in detail when and Under what circumstances power management will works? From: users-bounces@ovirt.org <users-bounces@ovirt.org> On Behalf Of Strahil Nikolov via Users Sent: Thursday, September 16, 2021 5:37 PM To: sz_cuitao@163.com; users@ovirt.org Subject: [ovirt-users] Re: about the power management of the hosts If your Host is stale and is having thr SPM role -> some tasks will fail. Also, the VMs on such host won't be recovered unless VM HA is enabled (with storage lease). For prod, I would setup that. Keep in mind that the fencing is issued by another host in the cluster, so you need minimum 2 hosts in a cluster before starting setup & test. Best Regards, Strahil Nikolov On Thu, Sep 16, 2021 at 10:32, Tommy Sway <sz_cuitao@163.com <mailto:sz_cuitao@163.com> > wrote: Everybody, hi: I would like to ask, after the configuration of power management on the host, under what circumstances will work? That is, when does the engine send a request to the IPMI module to restart the power supply? Is it necessary to configure power management modules in the production environment? Are there any risks? Thanks! _______________________________________________ Users mailing list -- users@ovirt.org <mailto:users@ovirt.org> To unsubscribe send an email to users-leave@ovirt.org <mailto:users-leave@ovirt.org> Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/C3FVP7FH57KOYW...
I think that the following documentation explains it far better than a single person can do: https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.4/htm... Best Regards,Strahil Nikolov On Sat, Sep 18, 2021 at 9:00, Tommy Sway<sz_cuitao@163.com> wrote: _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/K6W7KB6323WJUY...
Thanks. Is the fence agent in this article a physical KVM server? From: users-bounces@ovirt.org <users-bounces@ovirt.org> On Behalf Of Strahil Nikolov via Users Sent: Saturday, September 18, 2021 5:45 PM To: Tommy Sway <sz_cuitao@163.com>; users@ovirt.org Subject: [ovirt-users] Re: about the power management of the hosts I think that the following documentation explains it far better than a single person can do: https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.4/htm... Best Regards, Strahil Nikolov On Sat, Sep 18, 2021 at 9:00, Tommy Sway <sz_cuitao@163.com <mailto:sz_cuitao@163.com> > wrote: _______________________________________________ Users mailing list -- users@ovirt.org <mailto:users@ovirt.org> To unsubscribe send an email to users-leave@ovirt.org <mailto:users-leave@ovirt.org> Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/K6W7KB6323WJUY...
Values are based on the method you want to fence the node.What type of server do you have ? Best Regards,Strahil Nikolov On Sat, Sep 18, 2021 at 15:31, Tommy Sway<sz_cuitao@163.com> wrote: _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/7HJHXQ25BKIQJI...
In product env are Inspur Server. It should use the IPMI. From: users-bounces@ovirt.org <users-bounces@ovirt.org> On Behalf Of Strahil Nikolov via Users Sent: Saturday, September 18, 2021 11:06 PM To: Tommy Sway <sz_cuitao@163.com>; users@ovirt.org Subject: [ovirt-users] Re: about the power management of the hosts Values are based on the method you want to fence the node. What type of server do you have ? Best Regards, Strahil Nikolov On Sat, Sep 18, 2021 at 15:31, Tommy Sway <sz_cuitao@163.com <mailto:sz_cuitao@163.com> > wrote: _______________________________________________ Users mailing list -- users@ovirt.org <mailto:users@ovirt.org> To unsubscribe send an email to users-leave@ovirt.org <mailto:users-leave@ovirt.org> Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/7HJHXQ25BKIQJI...
Hi, I don't think you're supposed to use IPMI for anything :) Most likely candidate for current hardware is redfish -- https://en.wikipedia.org/wiki/Redfish_(specification) Greetings Klaas On 9/19/21 17:08, Tommy Sway wrote:
In product env are Inspur Server.
It should use the IPMI.
*From:*users-bounces@ovirt.org <users-bounces@ovirt.org> *On Behalf Of *Strahil Nikolov via Users *Sent:* Saturday, September 18, 2021 11:06 PM *To:* Tommy Sway <sz_cuitao@163.com>; users@ovirt.org *Subject:* [ovirt-users] Re: about the power management of the hosts
Values are based on the method you want to fence the node.
What type of server do you have ?
Best Regards,
Strahil Nikolov
On Sat, Sep 18, 2021 at 15:31, Tommy Sway
<sz_cuitao@163.com> wrote:
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_______________________________________________ Users mailing list --users@ovirt.org To unsubscribe send an email tousers-leave@ovirt.org Privacy Statement:https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct:https://www.ovirt.org/community/about/community-guidelines/ List Archives:https://lists.ovirt.org/archives/list/users@ovirt.org/message/CSZADLQJUY6F2Y...
Is a high availability virtual machine impossible without power management? From: users-bounces@ovirt.org <users-bounces@ovirt.org> On Behalf Of Klaas Demter Sent: Monday, September 20, 2021 12:51 AM To: users@ovirt.org Subject: [ovirt-users] Re: about the power management of the hosts Hi, I don't think you're supposed to use IPMI for anything :) Most likely candidate for current hardware is redfish -- https://en.wikipedia.org/wiki/Redfish_(specification) Greetings Klaas On 9/19/21 17:08, Tommy Sway wrote: In product env are Inspur Server. It should use the IPMI. From: users-bounces@ovirt.org <mailto:users-bounces@ovirt.org> <mailto:users-bounces@ovirt.org> <users-bounces@ovirt.org> On Behalf Of Strahil Nikolov via Users Sent: Saturday, September 18, 2021 11:06 PM To: Tommy Sway <mailto:sz_cuitao@163.com> <sz_cuitao@163.com>; users@ovirt.org <mailto:users@ovirt.org> Subject: [ovirt-users] Re: about the power management of the hosts Values are based on the method you want to fence the node. What type of server do you have ? Best Regards, Strahil Nikolov On Sat, Sep 18, 2021 at 15:31, Tommy Sway <sz_cuitao@163.com <mailto:sz_cuitao@163.com> > wrote: _______________________________________________ Users mailing list -- users@ovirt.org <mailto:users@ovirt.org> To unsubscribe send an email to users-leave@ovirt.org <mailto:users-leave@ovirt.org> Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/7HJHXQ25BKIQJI... _______________________________________________ Users mailing list -- users@ovirt.org <mailto:users@ovirt.org> To unsubscribe send an email to users-leave@ovirt.org <mailto:users-leave@ovirt.org> Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/CSZADLQJUY6F2Y...
It is possible, but without the SPM host being fenced you won't be able to do any storage-related tasks. Even snapahot management will be impossible withoutmanual intervention (reboot the host from the remote management and then mark the host as restarted). Best Regards,Strahil Nikolov On Wed, Sep 22, 2021 at 5:42, Tommy Sway<sz_cuitao@163.com> wrote: _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/QXDDVK3QMNLSIF...
My test scenario is as follows: Two physical machines in a cluster are not configured with power management, and VMS are enabled with high availability. After a host is stopped, VMS restart on other physical servers. The physical machine that was stopped then started back, found that there was no abnormal. I was wondering under what conditions you said there might be problems with the storage layer ? From: users-bounces@ovirt.org <users-bounces@ovirt.org> On Behalf Of Strahil Nikolov via Users Sent: Thursday, September 23, 2021 12:55 AM To: Tommy Sway <sz_cuitao@163.com>; 'Klaas Demter' <klaasdemter@gmail.com>; users@ovirt.org Subject: [ovirt-users] Re: about the power management of the hosts It is possible, but without the SPM host being fenced you won't be able to do any storage-related tasks. Even snapahot management will be impossible withoutmanual intervention (reboot the host from the remote management and then mark the host as restarted). Best Regards, Strahil Nikolov On Wed, Sep 22, 2021 at 5:42, Tommy Sway <sz_cuitao@163.com <mailto:sz_cuitao@163.com> > wrote: _______________________________________________ Users mailing list -- users@ovirt.org <mailto:users@ovirt.org> To unsubscribe send an email to users-leave@ovirt.org <mailto:users-leave@ovirt.org> Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/QXDDVK3QMNLSIF...
When systems go 'crazy' there is no guarantee that they will be completely unresponsive. HA VMs should be fine, but regular VMs won't be restarted as the engine won't know if the host is dead or not (and no fencing is configured to guarantee that). Also, storage tasks could fail if that host is also the SPM. Best Regards,Strahil Nikolov On Thu, Sep 23, 2021 at 3:09, Tommy Sway<sz_cuitao@163.com> wrote: _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/X4G7IW5ZWYNTUW...
Hi, For example, in situation where host: * laggy * network laggy or another manager <-> host connectivity issues - ovirt-engine can't determine what with host actually: * host stuck * host unreachable * me (engine) unreachable * other lossy, lags, etc another chances for enginte to determine host is powered up or not is IPMI - engine tells to another (reachable) host to execute IPMI call for target host (problem host): here some engine logic, when host is actually powered up - we can wait when management network return, or can reboot (via IPMI) host, mark host as failed, evacuate VM's, etc... k
On 18 Sep 2021, at 08:59, Tommy Sway <sz_cuitao@163.com> wrote:
Can somebody explain in detail when and Under what circumstances power management will works?
participants (4)
-
Klaas Demter -
Konstantin Shalygin -
Strahil Nikolov -
Tommy Sway