openstack-manuals/doc/admin-guide/source/shared-file-systems-share-networks.rst

Share networks

Share network is an entity that encapsulates interaction with the OpenStack Networking service. If the share driver that you selected runs in a mode requiring Networking service interaction, specify the share network when creating a new share network.

How to create share network

To list networks in a tenant, run:

$ neutron net-list
+--------------+---------+---------------------------------------+
| id           | name    | subnets                               |
+--------------+---------+---------------------------------------+
| bee7411d-... | public  | 884a6564-0f11-... 2001:db8::/64       |
|              |         | e6da81fa-5d5f-... 172.24.4.0/24       |
| 5ed5a854-... | private | 74dcfb5a-b4d7-... 10.0.0.0/24         |
|              |         | cc297be2-5213-... fd7d:177d:a48b::/64 |
+--------------+---------+---------------------------------------+

A share network stores network information that share servers can use where shares are hosted. You can associate a share with a single share network. When you create or update a share, you can optionally specify the ID of a share network through which instances can access the share.

When you create a share network, you can specify only one type of network:

• OpenStack Networking (neutron). Specify a network ID and subnet ID. In this case manila.network.nova_network_plugin.NeutronNetworkPlugin will be used.
• Legacy networking (nova-network). Specify a network ID. In this case manila.network.nova_network_plugin.NoveNetworkPlugin will be used.

For more information about supported plug-ins for share networks, see shared_file_systems_network_plugins.

A share network has these attributes:

• The IP block in Classless Inter-Domain Routing (CIDR) notation from which to allocate the network.
• The IP version of the network.
• The network type, which is vlan, vxlan, gre, or flat.

If the network uses segmentation, a segmentation identifier. For example, VLAN, VXLAN, and GRE networks use segmentation.

To create a share network with private network and subnetwork, run:

$ manila share-network-create --neutron-net-id 5ed5a854-21dc-4ed3-870a-117b7064eb21 \
--neutron-subnet-id 74dcfb5a-b4d7-4855-86f5-a669729428dc --name my_share_net --description "My first share network"
+-------------------+--------------------------------------+
| Property          | Value                                |
+-------------------+--------------------------------------+
| name              | my_share_net                         |
| segmentation_id   | None                                 |
| created_at        | 2015-09-24T12:06:32.602174           |
| neutron_subnet_id | 74dcfb5a-b4d7-4855-86f5-a669729428dc |
| updated_at        | None                                 |
| network_type      | None                                 |
| neutron_net_id    | 5ed5a854-21dc-4ed3-870a-117b7064eb21 |
| ip_version        | None                                 |
| nova_net_id       | None                                 |
| cidr              | None                                 |
| project_id        | 20787a7ba11946adad976463b57d8a2f     |
| id                | 5c3cbabb-f4da-465f-bc7f-fadbe047b85a |
| description       | My first share network               |
+-------------------+--------------------------------------+

The segmentation_id, cidr, ip_version, and network_type share network attributes are automatically set to the values determined by the network provider.

To check the network list, run:

$ manila share-network-list
+--------------------------------------+--------------+
| id                                   | name         |
+--------------------------------------+--------------+
| 5c3cbabb-f4da-465f-bc7f-fadbe047b85a | my_share_net |
+--------------------------------------+--------------+

If you configured the generic driver with driver_handles_share_servers = True (with the share servers) and already had previous operations in the Shared File Systems service, you can see manila_service_network in the neutron list of networks. This network was created by the generic driver for internal use.

$ neutron net-list
+--------------+------------------------+------------------------------------+
| id           | name                   | subnets                            |
+--------------+------------------------+------------------------------------+
| 3b5a629a-e...| manila_service_network | 4f366100-50... 10.254.0.0/28       |
| bee7411d-d...| public                 | 884a6564-01... 2001:db8::/64       |
|              |                        | e6da81fa-55... 172.24.4.0/24       |
| 5ed5a854-2...| private                | 74dcfb5a-bd... 10.0.0.0/24         |
|              |                        | cc297be2-51... fd7d:177d:a48b::/64 |
+--------------+------------------------+------------------------------------+

You also can see detailed information about the share network including network_type, and segmentation_id fields:

$ neutron net-show manila_service_network
+---------------------------+--------------------------------------+
| Field                     | Value                                |
+---------------------------+--------------------------------------+
| admin_state_up            | True                                 |
| id                        | 3b5a629a-e7a1-46a3-afb2-ab666fb884bc |
| mtu                       | 0                                    |
| name                      | manila_service_network               |
| port_security_enabled     | True                                 |
| provider:network_type     | vxlan                                |
| provider:physical_network |                                      |
| provider:segmentation_id  | 1068                                 |
| router:external           | False                                |
| shared                    | False                                |
| status                    | ACTIVE                               |
| subnets                   | 4f366100-5108-4fa2-b5b1-989a121c1403 |
| tenant_id                 | 24c6491074e942309a908c674606f598     |
+---------------------------+--------------------------------------+

You also can add and remove the security services from the share network. For more detail, see shared_file_systems_security_services.