openstack numa详解(命令使用篇)
openstack中，对虚机内部的cpu numa node的拓扑即vnuma node进行构造的方式
方式一：
通过flavor的方式进行配置：
$ openstack flavor set FLAVOR-NAME \
--property hw:numa_nodes=FLAVOR-NODES \
--property hw:numa_cpus.N=FLAVOR-CORES \
--property hw:numa_mem.N=FLAVOR-MEMORY
FLAVOR-NODES 表示虚机内部有几个node ,numa_cpus.N 表示虚机内部vnuma node的索引号，numa_mem.N 表示虚机内部vnuma node的内存大小
样例：
[root@test ~]# nova flavor-show 4c_3g_2g
+----------------------------+----------------------------------------------------------------------------------------------------------------------------+
| Property | Value |
+----------------------------+----------------------------------------------------------------------------------------------------------------------------+
| OS-FLV-DISABLED:disabled | False |
| OS-FLV-EXT-DATA:ephemeral | 0 |
| description | - |
| disk | 2 |
| extra_specs | {"hw:numa_nodes": "2", "hw:numa_cpus.0": "0,1", "hw:numa_mem.0": "1024", "hw:numa_cpus.1": "2,3", "hw:numa_mem.1": "2048"} |
| id | 1f502bd9-3715-4a53-a177-ee77858cb4a7 |
| name | 4c_3g_2g |
| os-flavor-access:is_public | True |
| ram | 3072 |
| rxtx_factor | 1.0 |
| swap | 0 |
| vcpus | 4 |
+----------------------------+----------------------------------------------------------------------------------------------------------------------------+
(u_dianxin) [root@hyserver01 ~]#
方式二：
通过image的方式进行配置，flavor里面，只设置cpu个数，内存大小及根磁盘空间
glance image-update 25bb9cd6-186c-4336-ada7-923430ea5de4 \ --property hw_numa_nodes=2 \ --property hw_numa_cpus.0=0 \ --property hw_numa_cpus.1=1 \ --property hw_numa_mem.0=1024 \ --property hw_numa_mem.1=1024
样例1：
[root@test ~]# glance image-show 25bb9cd6-186c-4336-ada7-923430ea5de4 +------------------+----------------------------------------------------------------------------------+ | Property | Value | +------------------+----------------------------------------------------------------------------------+ | checksum | 443b7623e27ecf03dc9e01ee93f67afe | | container_format | bare | | created_at | 2021-09-01T02:07:36Z | | disk_format | qcow2 | | hw_numa_cpus.0 | 0 | | hw_numa_cpus.1 | 1 | | hw_numa_mem.0 | 1024 | | hw_numa_mem.1 | 1024 | | hw_numa_nodes | 2 | | id | 25bb9cd6-186c-4336-ada7-923430ea5de4 | | min_disk | 0 | | min_ram | 0 | | name | cirros_hw | | os_hash_algo | sha512 | | os_hash_value | 6513f21e44aa3da349f248188a44bc304a3653a04122d8fb4535423c8e1d14cd6a153f735bb0982e | | | 2161b5b5186106570c17a9e58b64dd39390617cd5a350f78 | | os_hidden | False | | owner | 97ce954e6b7c4a59b5bf06b48aadb73a | | protected | False | | size | 12716032 | | status | active | | stores | file | | tags | [] | | updated_at | 2021-09-01T02:20:31Z | | virtual_size | Not available | | visibility | shared | +------------------+----------------------------------------------------------------------------------+
如果只是设置hw_numa_nodes参数，其他的参数不设置，那么nova代码，会自动根据flavor里面cpu,memory的大小，自动进行平分。
通过这两种方式，创建完虚机以后，可以进入到虚机内部，通过lscpu命令，查看到numa node的个数，及设置情况
