. Changed in compute node:

给宿主机预留资源：

宿主机可用cpu：cpuid  – cpuid 

宿主机可用内存：25G

#vim /etc/nova/nova.conf

vcpu_pin_set=-

reserved_host_memory_mb=

#grubby --update-kernel=ALL --args="isolcpus=6-31"

#reboot

. Changed in controller node:

给nova-scheduler服务添加两个过滤器，以过滤带有vcpu绑定的计算节点出来，给用户使用。

这里的过滤是根据flavor的metadata中的aggregate_instance_extra_specs:pinned是true还是false，

来判断用户是否需要给云主机做vcpu绑定。

#vim /etc/nova/nova.conf

scheduler_default_filters=...,NUMATopologyFilter,AggregateInstanceExtraSpecsFilter

#systemctl restart openstack-nova-scheduler

. Configure aggregate:

创建两个机组，分别为不给云主机绑定vcpu的normal机组，和给云主机绑定vcpu的performance机组。

并添加计算节点到各个机组中。---21为normal机组host，---20为performance机组。

# nova aggregate-create performance

# nova aggregate-create normal

# nova aggregate-list

+----+-------------+-------------------+

| Id | Name | Availability Zone |

+----+-------------+-------------------+

|  | performance | - |

|  | normal | - |

+----+-------------+-------------------+

# nova aggregate-set-metadata  pinned=true

# nova aggregate-set-metadata  pinned=false

# nova aggregate-add-host  ---

Host --- has been successfully added for aggregate

+----+--------+-------------------+---------------+----------------+

| Id | Name | Availability Zone | Hosts | Metadata |

+----+--------+-------------------+---------------+----------------+

|  | normal | - | '10-0-192-21' | 'pinned=false' |

+----+--------+-------------------+---------------+----------------+

# nova aggregate-add-host  ---

Host --- has been successfully added for aggregate

+----+-------------+-------------------+---------------+---------------+

| Id | Name | Availability Zone | Hosts | Metadata |

+----+-------------+-------------------+---------------+---------------+

|  | performance | - | '10-0-192-20' | 'pinned=true' |

+----+-------------+-------------------+---------------+---------------+

. Configure flavor:

Add metadata 'aggregate type: normal' to old flavor:

将已经存在的flavor的metadata的机组vcpu绑定属性设置为不绑定：

#for FLAVOR in ` nova flavor-list | cut -f  -d ' ' | grep [-]* | grep -v "\-\-" | grep -v ID`; do nova flavor-key ${FLAVOR} set "aggregate_instance_extra_specs:pinned"="false"; done

Create new flavor with metadata 'aggregate type: performance':

创建新的flavor， 带有的metadata中vcpu绑定属性设置为绑定：

#nova flavor-create m1.big-.vcpuPin

#nova flavor-create m1.small.vcpuPin    

... ...

#for i in `nova flavor-list | grep vcpuPin | awk '{print $2}'`; do nova flavor-key $i set hw:cpu_policy=dedicated; nova flavor-key $i set aggregate_instance_extra_specs:pinned=true; done

Launch an instance to test the new flavor, check if the instance runs in host whose aggegate type is performance:

启动一个虚拟机，使用新创建的flavor，验证虚拟机是否运行在了10---20服务器上，检查虚拟机的xml配置信息是否包含vcpu绑定配置：

#nova boot --image ...

Attention:

. if flavor's metadata is NULL, then the vm may be scheduled to this pin=true host。

如果flavor的metadata为空， 即创建flavor的时候，不指定metadata的机组绑定属性，则使用这个flavor的云主机可以像没配置vcpu绑定的时候那样， 运行在normal不绑定vcpu节点，或

performance绑定vcpu节点。