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OpenStack Rocky : Configure Neutron Network2019/08/19

 
Configure Networking for Virtual Machine Instances.
For example, configure FLAT type of provider networking on here. The Node has 2 network interfaces like follows.
        eth0|10.0.0.30 
+-----------+-----------+
|    [ Control Node ]   |
|                       |
|  MariaDB    RabbitMQ  |
|  Memcached  httpd     |
|  Keystone   Glance    |
|   Nova API,Compute    |
|    Neutron Server     |
|  L2,L3,Metadata Agent |
+-----------+-----------+
        eth1|(UP with no IP)

[1] Configure Neutron services.
# change setting for [eth1] (set as anonymous interface)

# replace the name [eth1] to your environment

root@dlp ~(keystone)#
vi /etc/network/interfaces
auto eth1
iface eth1 inet manual

root@dlp ~(keystone)#
ifup eth1

# add bridge and add the anonymous interface above to the bridge port

root@dlp ~(keystone)#
ovs-vsctl add-br br-eth1

root@dlp ~(keystone)#
ovs-vsctl add-port br-eth1 eth1
root@dlp ~(keystone)#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# line 155: change

[ml2_type_flat]
.....
.....
flat_networks =
physnet1
root@dlp ~(keystone)#
vi /etc/neutron/plugins/ml2/openvswitch_agent.ini
# line 195: uncomment and change

bridge_mappings =
physnet1:br-eth1
root@dlp ~(keystone)#
systemctl restart neutron-api neutron-rpc-server neutron-openvswitch-agent

[2] Create virtual network.
root@dlp ~(keystone)#
projectID=$(openstack project list | grep service | awk '{print $2}')
# create network named [sharednet1]

root@dlp ~(keystone)#
openstack network create --project $projectID \
--share --provider-network-type flat --provider-physical-network physnet1 sharednet1

+---------------------------+--------------------------------------+
| Field                     | Value                                |
+---------------------------+--------------------------------------+
| admin_state_up            | UP                                   |
| availability_zone_hints   |                                      |
| availability_zones        |                                      |
| created_at                | 2019-08-19T07:21:16Z                 |
| description               |                                      |
| dns_domain                | None                                 |
| id                        | 5f6060b5-0023-4026-9ffe-57868cf75eac |
| ipv4_address_scope        | None                                 |
| ipv6_address_scope        | None                                 |
| is_default                | False                                |
| is_vlan_transparent       | None                                 |
| mtu                       | 1500                                 |
| name                      | sharednet1                           |
| port_security_enabled     | True                                 |
| project_id                | af821885c5934a9395aeabe996751847     |
| provider:network_type     | flat                                 |
| provider:physical_network | physnet1                             |
| provider:segmentation_id  | None                                 |
| qos_policy_id             | None                                 |
| revision_number           | 0                                    |
| router:external           | Internal                             |
| segments                  | None                                 |
| shared                    | True                                 |
| status                    | ACTIVE                               |
| subnets                   |                                      |
| tags                      |                                      |
| updated_at                | 2019-08-19T07:21:16Z                 |
+---------------------------+--------------------------------------+

# create subnet [10.0.0.0/24] in [sharednet1]

root@dlp ~(keystone)#
openstack subnet create subnet1 --network sharednet1 \
--project $projectID --subnet-range 10.0.0.0/24 \
--allocation-pool start=10.0.0.200,end=10.0.0.254 \
--gateway 10.0.0.1 --dns-nameserver 10.0.0.10

+-------------------+--------------------------------------+
| Field             | Value                                |
+-------------------+--------------------------------------+
| allocation_pools  | 10.0.0.200-10.0.0.254                |
| cidr              | 10.0.0.0/24                          |
| created_at        | 2019-08-19T07:21:37Z                 |
| description       |                                      |
| dns_nameservers   | 10.0.0.10                            |
| enable_dhcp       | True                                 |
| gateway_ip        | 10.0.0.1                             |
| host_routes       |                                      |
| id                | 724c38e8-cdef-443a-9b9f-0c8f2f530577 |
| ip_version        | 4                                    |
| ipv6_address_mode | None                                 |
| ipv6_ra_mode      | None                                 |
| name              | subnet1                              |
| network_id        | 5f6060b5-0023-4026-9ffe-57868cf75eac |
| project_id        | af821885c5934a9395aeabe996751847     |
| revision_number   | 0                                    |
| segment_id        | None                                 |
| service_types     |                                      |
| subnetpool_id     | None                                 |
| tags              |                                      |
| updated_at        | 2019-08-19T07:21:37Z                 |
+-------------------+--------------------------------------+

# confirm settings

root@dlp ~(keystone)#
openstack network list

+--------------------------------------+------------+--------------------------------------+
| ID                                   | Name       | Subnets                              |
+--------------------------------------+------------+--------------------------------------+
| 5f6060b5-0023-4026-9ffe-57868cf75eac | sharednet1 | 724c38e8-cdef-443a-9b9f-0c8f2f530577 |
+--------------------------------------+------------+--------------------------------------+

root@dlp ~(keystone)#
openstack subnet list

+--------------------------------------+---------+--------------------------------------+-------------+
| ID                                   | Name    | Network                              | Subnet      |
+--------------------------------------+---------+--------------------------------------+-------------+
| 724c38e8-cdef-443a-9b9f-0c8f2f530577 | subnet1 | 5f6060b5-0023-4026-9ffe-57868cf75eac | 10.0.0.0/24 |
+--------------------------------------+---------+--------------------------------------+-------------+
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