11.2.2. Designating Compute nodes for vGPU

Procedure

1. To create the new ComputeGpu role file, copy the file /usr/share/openstack-tripleo-heat-templates/roles/Compute.yaml to /usr/share/openstack-tripleo-heat-templates/roles/ComputeGpu.yaml and edit or add the following file sections:

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   表11.1 ComputeGpu role file edits

   Section/Parameter	Current value	New value
   Role comment	Role: Compute	Role: ComputeGpu
   Role name	name: Compute	name: ComputeGpu
   description	Basic Compute Node role	GPU Compute Node role
   ImageDefault	n/a	overcloud-full-gpu
   HostnameFormatDefault	-compute-	-computegpu-
   deprecated_nic_config_name	compute.yaml	compute-gpu.yaml

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   The following example shows the ComputeGpu role details:

   #####################################################################
   # Role: ComputeGpu                                                  #
   #####################################################################
   - name: ComputeGpu
     description: |
       GPU Compute Node role
     CountDefault: 1
     ImageDefault: overcloud-full-gpu
     networks:
       - InternalApi
       - Tenant
       - Storage
     HostnameFormatDefault: '%stackname%-computegpu-%index%'
     RoleParametersDefault:
       TunedProfileName: "virtual-host"
     # Deprecated & backward-compatible values (FIXME: Make parameters consistent)
     # Set uses_deprecated_params to True if any deprecated params are used.
     uses_deprecated_params: True
     deprecated_param_image: 'NovaImage'
     deprecated_param_extraconfig: 'NovaComputeExtraConfig'
     deprecated_param_metadata: 'NovaComputeServerMetadata'
     deprecated_param_scheduler_hints: 'NovaComputeSchedulerHints'
     deprecated_param_ips: 'NovaComputeIPs'
     deprecated_server_resource_name: 'NovaCompute'
     deprecated_nic_config_name: 'compute-gpu.yaml'
     ServicesDefault:
       - OS::TripleO::Services::Aide
       - OS::TripleO::Services::AuditD
       - OS::TripleO::Services::CACerts
       - OS::TripleO::Services::CephClient
       - OS::TripleO::Services::CephExternal
       - OS::TripleO::Services::CertmongerUser
       - OS::TripleO::Services::Collectd
       - OS::TripleO::Services::ComputeCeilometerAgent
       - OS::TripleO::Services::ComputeNeutronCorePlugin
       - OS::TripleO::Services::ComputeNeutronL3Agent
       - OS::TripleO::Services::ComputeNeutronMetadataAgent
       - OS::TripleO::Services::ComputeNeutronOvsAgent
       - OS::TripleO::Services::Docker
       - OS::TripleO::Services::Fluentd
       - OS::TripleO::Services::Ipsec
       - OS::TripleO::Services::Iscsid
       - OS::TripleO::Services::Kernel
       - OS::TripleO::Services::LoginDefs
       - OS::TripleO::Services::MetricsQdr
       - OS::TripleO::Services::MySQLClient
       - OS::TripleO::Services::NeutronBgpVpnBagpipe
       - OS::TripleO::Services::NeutronLinuxbridgeAgent
       - OS::TripleO::Services::NeutronVppAgent
       - OS::TripleO::Services::NovaCompute
       - OS::TripleO::Services::NovaLibvirt
       - OS::TripleO::Services::NovaLibvirtGuests
       - OS::TripleO::Services::NovaMigrationTarget
       - OS::TripleO::Services::Ntp
       - OS::TripleO::Services::ContainersLogrotateCrond
       - OS::TripleO::Services::OpenDaylightOvs
       - OS::TripleO::Services::Rhsm
       - OS::TripleO::Services::RsyslogSidecar
       - OS::TripleO::Services::Securetty
       - OS::TripleO::Services::SensuClient
       - OS::TripleO::Services::SkydiveAgent
       - OS::TripleO::Services::Snmp
       - OS::TripleO::Services::Sshd
       - OS::TripleO::Services::Timezone
       - OS::TripleO::Services::TripleoFirewall
       - OS::TripleO::Services::TripleoPackages
       - OS::TripleO::Services::Tuned
       - OS::TripleO::Services::Vpp
       - OS::TripleO::Services::OVNController
       - OS::TripleO::Services::OVNMetadataAgent
       - OS::TripleO::Services::Ptp

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2. Generate a new roles data file named roles_data_gpu.yaml that includes the Controller, Compute, and ComputeGpu roles:

   (undercloud) [stack@director templates]$ openstack overcloud roles \
     generate -o /home/stack/templates/roles_data_gpu.yaml \
     ComputeGpu Compute Controller

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3. Register the node for the overcloud. For more information, see Registering nodes for the overcloud in the Director Installation and Usage guide.
4. Inspect the node hardware. For more information, see Inspecting the hardware of nodes in the Director Installation and Usage guide.

5. Create the compute-vgpu-nvidia flavor to use to tag nodes that you want to designate for vGPU workloads:

   (undercloud) [stack@director templates]$ openstack flavor create --id auto --ram 6144 --disk 40 --vcpus 4 compute-vgpu-nvidia
   +----------------------------+--------------------------------------+
   | Field                      | Value                                |
   +----------------------------+--------------------------------------+
   | OS-FLV-DISABLED:disabled   | False                                |
   | OS-FLV-EXT-DATA:ephemeral  | 0                                    |
   | disk                       | 40                                   |
   | id                         | 9cb47954-be00-47c6-a57f-44db35be3e69 |
   | name                       | compute-vgpu-nvidia                  |
   | os-flavor-access:is_public | True                                 |
   | properties                 |                                      |
   | ram                        | 6144                                 |
   | rxtx_factor                | 1.0                                  |
   | swap                       |                                      |
   | vcpus                      | 4                                    |
   +----------------------------+--------------------------------------+

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6. Tag each node that you want to designate for GPU workloads with the compute-vgpu-nvidia profile.

   (undercloud) [stack@director templates]$ openstack baremetal node set --property capabilities='profile:compute-vgpu-nvidia,boot_option:local' <node>

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   Replace <node> with the ID of the baremetal node.

7. To verify the role is created, enter the following command:

   (undercloud) [stack@director templates]$ openstack overcloud profiles list

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