On April 5, 2020 6:39:43 PM GMT+03:00, Martin Sivak <msi...@redhat.com> wrote: >On Sun, Apr 5, 2020 at 4:07 PM Strahil Nikolov <hunter86...@yahoo.com> >wrote: >> >> On April 5, 2020 3:36:42 PM GMT+03:00, "Maton, Brett" ><mat...@ltresources.co.uk> wrote: >> >I've got a cluster made up of five physical hosts, (Dells with idrac >7 >> >management) >> >Power management / fencing enabled on all hosts. >> > >> >I've enabled the power_saving scheduling policy on my cluster, it's >> >migrated all the VM's to a couple of physical hosts so three are >> >sitting >> >idle with no VM's. >> > >> >Shouldn't the power_saving policy shut down the idle hosts? >> >> I don't think so... > >On the contrary, it will shut down unneeded hosts indeed. But you have >to configure the fields Liran mentioned: > >Edit the cluster, select scheduling policy tab and add two parameters >to your Power saving policy. One (EnableAutomaticHostPowerManagement) >enables the power cycling mechanism and the second one >(HostsInReserve) controls how many empty hosts are allowed to stay up. >When the not enough hosts are empty anymore a new one will be started. > >Best regards > >-- >Martin Sivak > >> But you can set a script to change the performance profile of tuned >daemon to adjust based on number of VMs. >> >> For example, if no VMs are running - tuned's power saving profile is >enabled, while if a VM is powered on (or migrated) - the script can >put a high performance peofile is enabled. >> >> >> Best Regards, >> Strahil Nikolov >> _______________________________________________ >> Users mailing list -- users@ovirt.org >> To unsubscribe send an email to users-le...@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/RRXKMRBMIME2KMBWW7GAA3DJBG5S24G7/
Damn, That's a great feature ! Best Regards, Strahil Nikolov _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@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/KJMGOVCHPPF2QPMGNDNDRUJHR2OY4ZW3/
