在Openstack中使用Heat配置网络MTU

在Openstack中使用热模板创建网络时，是否可以配置网络的mtu

我可以通过CLI

openstack网络设置mtu--mtu

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我在加热指南中看到mtu的参考，但它似乎不允许设置值

是的，可以使用加热模板设置MTU。您必须使用

value\u specs

-字段，该字段允许您使用其他属性。请在此处查看其非常糟糕的文档：

我使用以下简单的加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，就像模板中设置的那样。用show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                                                                                                                                             |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+

---

是的，可以使用热模板设置MTU。您必须使用

value\u specs

-字段，该字段允许您使用其他属性。请在此处查看其非常糟糕的文档：

我使用以下简单的加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，就像模板中设置的那样。用show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                                                                                                                                             |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+

---

您试图设置的MTU值是多少？任何值。只是希望能够通过加热来设置它。首先将其设置为1500，然后可以尝试使用9000（巨型帧）。测试这些值是否适用于您。您试图设置的MTU值是多少？任何值。只是希望能够通过加热来设置它。首先将其设置为1500，然后可以尝试使用9000（巨型帧）。测试这些值是否适用于您。