使用 Heat 在 Openstack 中配置网络 MTU

Configure network MTU in Openstack with Heat

在 Openstack 中使用 heat 模板创建网络时是否可以配置网络的 mtu?

我可以通过 CLI 设置 mtu openstack network --mtu <value> <network_id>

我在热导中看到了对 mtu 的引用,但它似乎不允许设置该值。

是的,可以使用热模板设置 MTU。您必须使用 value_specs 字段,它允许您使用其他属性。在此处查看其非常糟糕的文档:

https://docs.openstack.org/heat/pike/template_guide/openstack.html#OS::Neutron::Subnet-prop-value_specs

我使用以下简单的热模板对其进行了测试:

heat_template_version: 2013-05-23
description: tests network

resources:
  demo-network:
    type: OS::Neutron::Net
    properties:
      name: demo-network
      value_specs: { mtu: 1400 }

它确实创建了一个 MTU 为 1400 的网络,就像在模板中设置的那样。用显示命令检查它:

root@test-node:~# openstack network show demo-network
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field                     | Value                                                                                                                                                            |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| admin_state_up            | UP                                                                                                                                                               |
| availability_zone_hints   |                                                                                                                                                                  |
| availability_zones        |                                                                                                                                                                  |
| created_at                | 2020-05-16T13:33:53Z                                                                                                                                             |
| description               |                                                                                                                                                                  |
| dns_domain                | None                                                                                                                                                             |
| id                        | 965d890f-0c37-400e-8ee0-ec6ce1fcf4e6                                                                                                                             |
| ipv4_address_scope        | None                                                                                                                                                             |
| ipv6_address_scope        | None                                                                                                                                                             |
| is_default                | None                                                                                                                                                             |
| is_vlan_transparent       | None                                                                                                                                                             |
| location                  | cloud='', project.domain_id=, project.domain_name='Default', project.id='2dacaa8f6d3348f28e126b371bf1dfab', project.name='admin', region_name='RegionOne', zone= |
| mtu                       | 1400                                                                                                                                                             |
| name                      | demo-network                                                                                                                                                     |
| port_security_enabled     | True                                                                                                                                                             |
| project_id                | 2dacaa8f6d3348f28e126b371bf1dfab                                                                                                                                 |
| provider:network_type     | vxlan                                                                                                                                                            |
| provider:physical_network | None                                                                                                                                                             |
| provider:segmentation_id  | 60                                                                                                                                                               |
| qos_policy_id             | None                                                                                                                                                             |
| revision_number           | 1                                                                                                                                                                |
| router:external           | Internal                                                                                                                                                         |
| segments                  | None                                                                                                                                                             |
| shared                    | False                                                                                                                                                            |
| status                    | ACTIVE                                                                                                                                                           |
| subnets                   |                                                                                                                                                                  |
| tags                      |                                                                                                                                                                  |
| updated_at                | 2020-05-16T13:33:53Z                                                                                                                                             |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+