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4.3.4.2. Adding metadata
You specify a flavor’s metadata using a key/value
pair.
- As an admin user in the dashboard, select Admin > System > Flavors.
-
Click the flavor’s Metadata link (
Yes
orNo
). All current values are listed on the right-hand side under Existing Metadata. - Under Available Metadata, click on the Other field, and specify the key you want to add (see 表4.5「Libvirt Metadata」).
- Click the + button; you can now view the new key under Existing Metadata.
Fill in the key’s value in its right-hand field.
- When finished with adding key-value pairs, click Save.
表4.5 Libvirt Metadata
Key | Description |
---|---|
| Action that configures support limits per instance. Valid actions are:
Example: |
| Definition of NUMA topology for the instance. For flavors whose RAM and vCPU allocations are larger than the size of NUMA nodes in the compute hosts, defining NUMA topology enables hosts to better utilize NUMA and improve performance of the guest OS. NUMA definitions defined through the flavor override image definitions. Valid definitions are:
注記
If the values of Example when the instance has 8 vCPUs and 4GB RAM:
The scheduler looks for a host with 2 NUMA nodes with the ability to run 6 CPUs + 3072 MB, or 3 GB, of RAM on one node, and 2 CPUS + 1024 MB, or 1 GB, of RAM on another node. If a host has a single NUMA node with capability to run 8 CPUs and 4 GB of RAM, it will not be considered a valid match. |
| An instance watchdog device can be used to trigger an action if the instance somehow fails (or hangs). Valid actions are:
Example: |
| You can use this parameter to specify the NUMA affinity policy for PCI passthrough devices and SR-IOV interfaces. Set to one of the following valid values:
Example: |
|
A random-number generator device can be added to an instance using its image properties (see If the device has been added, valid actions are:
Example: |
| Maximum permitted RAM to be allowed for video devices (in MB).
Example: |
| Enforcing limit for the instance. Valid options are:
Example: In addition, the VMware driver supports the following quota options, which control upper and lower limits for CPUs, RAM, disks, and networks, as well as shares, which can be used to control relative allocation of available resources among tenants:
|