+ LibvirtEnabledPerfEvents:
+ type: comma_delimited_list
+ default: []
+ description: This is a performance event list which could be used as monitor.
+ For example - ``enabled_perf_events = cmt, mbml, mbmt``
+ The supported events list can be found in
+ https://libvirt.org/html/libvirt-libvirt-domain.html ,
+ which you may need to search key words ``VIR_PERF_PARAM_*``
+ MonitoringSubscriptionNovaLibvirt:
+ default: 'overcloud-nova-libvirt'
+ type: string