OpenStack ManualsOpenStack Installation Guide for Ubuntu 12.04 (LTS)  - havana

 

 Logical network configuration

[Note]Note

Run these commands on the network node.

Ensure that the following environment variables are set. Various clients use these variables to access the Identity Service.

  • Create a novarc file:

    export OS_TENANT_NAME=provider_tenant
export OS_USERNAME=admin
export OS_PASSWORD=ADMIN_PASS
export OS_AUTH_URL="http://controller:5000/v2.0/"
export OS_SERVICE_ENDPOINT="http://controller:35357/v2.0"
export OS_SERVICE_TOKEN=password

  • Export the variables:

    # source novarc echo "source novarc">>.bashrc

The admin user creates a network and subnet on behalf of tenant_A. A tenant_A user can also complete these steps.

 

To configure internal networking

  1. Get the tenant ID (Used as $TENANT_ID later).

    # keystone tenant-list
+----------------------------------+--------------------+---------+
|                id                |        name        | enabled |
+----------------------------------+--------------------+---------+
| 48fb81ab2f6b409bafac8961a594980f |  provider_tenant   |   True  |
| cbb574ac1e654a0a992bfc0554237abf |      service       |   True  |
| e371436fe2854ed89cca6c33ae7a83cd | invisible_to_admin |   True  |
| e40fa60181524f9f9ee7aa1038748f08 |      tenant_A      |   True  |
+----------------------------------+--------------------+---------+

  2. Create an internal network named net1 for tenant_A ($TENANT_ID will be e40fa60181524f9f9ee7aa1038748f08):

    # neutron net-create --tenant-id $TENANT_ID net1
+---------------------------+--------------------------------------+
| Field                     | Value                                |
+---------------------------+--------------------------------------+
| admin_state_up            | True                                 |
| id                        | e99a361c-0af8-4163-9feb-8554d4c37e4f |
| name                      | net1                                 |
| provider:network_type     | vlan                                 |
| provider:physical_network | physnet1                             |
| provider:segmentation_id  | 1024                                 |
| router:external           | False                                |
| shared                    | False                                |
| status                    | ACTIVE                               |
| subnets                   |                                      |
| tenant_id                 | e40fa60181524f9f9ee7aa1038748f08     |
+---------------------------+--------------------------------------+

  3. Create a subnet on the network net1 (ID field below is used as $SUBNET_ID later):

    # neutron subnet-create --tenant-id $TENANT_ID net1 10.5.5.0/24
+------------------+--------------------------------------------+
| Field            | Value                                      |
+------------------+--------------------------------------------+
| allocation_pools | {"start": "10.5.5.2", "end": "10.5.5.254"} |
| cidr             | 10.5.5.0/24                                |
| dns_nameservers  |                                            |
| enable_dhcp      | True                                       |
| gateway_ip       | 10.5.5.1                                   |
| host_routes      |                                            |
| id               | c395cb5d-ba03-41ee-8a12-7e792d51a167       |
| ip_version       | 4                                          |
| name             |                                            |
| network_id       | e99a361c-0af8-4163-9feb-8554d4c37e4f       |
| tenant_id        | e40fa60181524f9f9ee7aa1038748f08           |
+------------------+--------------------------------------------+

A user with the admin role must complete these steps. In this procedure, the user is admin from provider_tenant.

 

To configure the router and external networking

  1. Create a router1 route. The ID is used as $ROUTER_ID later:

    # neutron router-create router1
+-----------------------+--------------------------------------+
| Field                 | Value                                |
+-----------------------+--------------------------------------+
| admin_state_up        | True                                 |
| external_gateway_info |                                      |
| id                    | 685f64e7-a020-4fdf-a8ad-e41194ae124b |
| name                  | router1                              |
| status                | ACTIVE                               |
| tenant_id             | 48fb81ab2f6b409bafac8961a594980f     |
+-----------------------+--------------------------------------+
    [Note]Note

    The --tenant-id parameter is not specified, so this router is assigned to the provider_tenant tenant.

  2. Add an interface to the router1 router and attach it to the subnet from net1:

    # neutron router-interface-add $ROUTER_ID $SUBNET_ID
Added interface to router 685f64e7-a020-4fdf-a8ad-e41194ae124b
    [Note]Note

    You can repeat this step to add more interfaces for other networks that belong to other tenants.

  3. Create the ext_net external network:

    # neutron net-create ext_net --router:external=True
+---------------------------+--------------------------------------+
| Field                     | Value                                |
+---------------------------+--------------------------------------+
| admin_state_up            | True                                 |
| id                        | 8858732b-0400-41f6-8e5c-25590e67ffeb |
| name                      | ext_net                              |
| provider:network_type     | vlan                                 |
| provider:physical_network | physnet1                             |
| provider:segmentation_id  | 1                                    |
| router:external           | True                                 |
| shared                    | False                                |
| status                    | ACTIVE                               |
| subnets                   |                                      |
| tenant_id                 | 48fb81ab2f6b409bafac8961a594980f     |
+---------------------------+--------------------------------------+

  4. Create the subnet for floating IPs.

    [Note]Note

    The DHCP service is disabled for this subnet.

    # neutron subnet-create ext_net \
--allocation-pool start=7.7.7.130,end=7.7.7.150 \
--gateway 7.7.7.1 7.7.7.0/24 --disable-dhcp
+------------------+--------------------------------------------------+
| Field            | Value                                            |
+------------------+--------------------------------------------------+
| allocation_pools | {"start": "7.7.7.130", "end": "7.7.7.150"}       |
| cidr             | 7.7.7.0/24                                       |
| dns_nameservers  |                                                  |
| enable_dhcp      | False                                            |
| gateway_ip       | 7.7.7.1                                          |
| host_routes      |                                                  |
| id               | aef60b55-cbff-405d-a81d-406283ac6cff             |
| ip_version       | 4                                                |
| name             |                                                  |
| network_id       | 8858732b-0400-41f6-8e5c-25590e67ffeb             |
| tenant_id        | 48fb81ab2f6b409bafac8961a594980f                 |
+------------------+--------------------------------------------------+

  5. Set the gateway for the router to the external network:

    # neutron router-gateway-set $ROUTER_ID $EXTERNAL_NETWORK_ID
Set gateway for router 685f64e7-a020-4fdf-a8ad-e41194ae124b

A user from tenant_A completes these steps, so the credentials in the environment variables are different than those in the previous procedure.

 

To allocate floating IP addresses

  1. You can associate a floating IP address with a VM after it starts. Find the ID of the port ($PORT_ID) that was allocated for the VM, as follows:

    # nova list
+--------------------------------------+--------+--------+---------------+
|                  ID                  |  Name  | Status |    Networks   |
+--------------------------------------+--------+--------+---------------+
| 1cdc671d-a296-4476-9a75-f9ca1d92fd26 | testvm | ACTIVE | net1=10.5.5.3 |
+--------------------------------------+--------+--------+---------------+

neutron port-list -- --device_id 1cdc671d-a296-4476-9a75-f9ca1d92fd26
+--------------------------------------+------+-------------------+---------------------------------------------------------------------------------+
| id                                   | name | mac_address       | fixed_ips                                                                       |
+--------------------------------------+------+-------------------+---------------------------------------------------------------------------------+
| 9aa47099-b87b-488c-8c1d-32f993626a30 |      | fa:16:3e:b4:d6:6c | {"subnet_id": "c395cb5d-ba03-41ee-8a12-7e792d51a167", "ip_address": "10.5.5.3"} |
+--------------------------------------+------+-------------------+---------------------------------------------------------------------------------+

  2. Allocate a floating IP (Used as $FLOATING_ID):

    # neutron floatingip-create ext_net
+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| fixed_ip_address    |                                      |
| floating_ip_address | 7.7.7.131                            |
| floating_network_id | 8858732b-0400-41f6-8e5c-25590e67ffeb |
| id                  | 40952c83-2541-4d0c-b58e-812c835079a5 |
| port_id             |                                      |
| router_id           |                                      |
| tenant_id           | e40fa60181524f9f9ee7aa1038748f08     |
+---------------------+--------------------------------------+

  3. Associate the floating IP with the port for the VM:

    # neutron floatingip-associate $FLOATING_ID $PORT_ID
Associated floatingip 40952c83-2541-4d0c-b58e-812c835079a5

  4. Show the floating IP:

    # neutron floatingip-show $FLOATING_ID
+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| fixed_ip_address    | 10.5.5.3                             |
| floating_ip_address | 7.7.7.131                            |
| floating_network_id | 8858732b-0400-41f6-8e5c-25590e67ffeb |
| id                  | 40952c83-2541-4d0c-b58e-812c835079a5 |
| port_id             | 9aa47099-b87b-488c-8c1d-32f993626a30 |
| router_id           | 685f64e7-a020-4fdf-a8ad-e41194ae124b |
| tenant_id           | e40fa60181524f9f9ee7aa1038748f08     |
+---------------------+--------------------------------------+

  5. Test the floating IP:

    # ping 7.7.7.131
PING 7.7.7.131 (7.7.7.131) 56(84) bytes of data.
64 bytes from 7.7.7.131: icmp_req=2 ttl=64 time=0.152 ms
64 bytes from 7.7.7.131: icmp_req=3 ttl=64 time=0.049 ms
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