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OpenStack Liberty : Configure Neutron(Control Node)
2015/11/15
 
Configure OpenStack Network Service (Neutron).
For this example, Install Neutron Server on Control Node which Keystone/Glance/Nova API are already installed, and Install DHCP Agent, L3 Agent, L2 Agent, Metadata Agent on Network Node, and also Install L2 Agent on Compute Node on here. ( it's possible to install on a server as All-in-One, though, if you want )
Neutron needs a plugin software, it's possible to choose it from some softwares. This example chooses ML2 plugin. ( it uses Open vSwitch under the backend )
                                |
+------------------+            |            +------------------------+
| [ Control Node ] |            |            |    [ Network Node ]    |
|     Keystone     |10.0.0.30   |   10.0.0.50|        DHCP Agent      |
|      Glance      |------------+------------|        L3 Agent        |
|     Nova API     |eth0        |        eth0|        L2 Agent        |
|  Neutron Server  |            |            |     Metadata Agent     |
+------------------+            |            +------------------------+
                            eth0|10.0.0.51
                      +--------------------+
                      |  [ Compute Node ]  |
                      |    Nova Compute    |
                      |      L2 Agent      |
                      +--------------------+

 
Configure Control Node on here.
[1] Add user or service for Neutron to Keystone.
# add neutron user (set in service project)

[root@dlp ~(keystone)]#
openstack user create --domain default --project service --password servicepassword neutron

+--------------------+----------------------------------+
| Field              | Value                            |
+--------------------+----------------------------------+
| default_project_id | 11a4bfa2b8c748ad860efb34b5fefb7f |
| domain_id          | default                          |
| enabled            | True                             |
| id                 | fc558e2e41e548949fb0a371ae6b14d6 |
| name               | neutron                          |
+--------------------+----------------------------------+

# add neutron user in admin role

[root@dlp ~(keystone)]#
openstack role add --project service --user neutron admin
# add service entry for neutron

[root@dlp ~(keystone)]#
openstack service create --name neutron --description "OpenStack Networking service" network

+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | OpenStack Networking service     |
| enabled     | True                             |
| id          | 31ad3b49b77f4dcea16b68749aa2fd94 |
| name        | neutron                          |
| type        | network                          |
+-------------+----------------------------------+

# define neutron server host

[root@dlp ~(keystone)]#
export controller=10.0.0.30
# add endpoint for neutron (public)

[root@dlp ~(keystone)]#
openstack endpoint create --region RegionOne network public http://$controller:9696

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | a474271685f24cccb07a473d58224efc |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 31ad3b49b77f4dcea16b68749aa2fd94 |
| service_name | neutron                          |
| service_type | network                          |
| url          | http://10.0.0.30:9696            |
+--------------+----------------------------------+

# add endpoint for neutron (internal)

[root@dlp ~(keystone)]#
openstack endpoint create --region RegionOne network internal http://$controller:9696

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | d87b3bcf191448fb9951ae54af1db9f6 |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 31ad3b49b77f4dcea16b68749aa2fd94 |
| service_name | neutron                          |
| service_type | network                          |
| url          | http://10.0.0.30:9696            |
+--------------+----------------------------------+

# add endpoint for neutron (admin)

[root@dlp ~(keystone)]#
openstack endpoint create --region RegionOne network admin http://$controller:9696

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 6243f5643c254f0090fc3a6bb01a3a39 |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 31ad3b49b77f4dcea16b68749aa2fd94 |
| service_name | neutron                          |
| service_type | network                          |
| url          | http://10.0.0.30:9696            |
+--------------+----------------------------------+
[2] Add a User and Database on MariaDB for Neutron.
[root@dlp ~(keystone)]#
mysql -u root -p

Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 19
Server version: 5.5.44-MariaDB MariaDB Server

Copyright (c) 2000, 2015, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]>
create database neutron_ml2;

Query OK, 1 row affected (0.00 sec)
MariaDB [(none)]>
grant all privileges on neutron_ml2.* to neutron@'localhost' identified by 'password';

Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]>
grant all privileges on neutron_ml2.* to neutron@'%' identified by 'password';

Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]>
flush privileges;

Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]>
exit

Bye
[3] Install Neutron Server.
# install from Liberty, EPEL

[root@dlp ~(keystone)]#
yum --enablerepo=centos-openstack-liberty,epel -y install openstack-neutron openstack-neutron-ml2
[4] Configure Neutron Server.
[root@dlp ~(keystone)]#
vi /etc/neutron/neutron.conf
# line 62: add

core_plugin = ml2
# line 79: add

service_plugins = router
# line 92: uncomment and change

auth_strategy =
keystone
# line 121: uncomment

dhcp_agent_notification = True
# line 132: uncomment

allow_overlapping_ips = True
# line 360: uncomment and change

notify_nova_on_port_status_changes =
True
# line 364: uncomment and change

notify_nova_on_port_data_changes =
True
# line 573: uncomment

rpc_backend = rabbit
# line 717: comment out and add lines under them (Keystone auth info)

[keystone_authtoken]
#
auth_uri = http://127.0.0.1:35357/v2.0/
#
identity_uri = http://127.0.0.1:5000
#
admin_tenant_name = %SERVICE_TENANT_NAME%
#
admin_user = %SERVICE_USER%
#
admin_password = %SERVICE_PASSWORD%
auth_uri = http://10.0.0.30:5000
auth_url = http://10.0.0.30:35357
auth_plugin = password
project_domain_id = default
user_domain_id = default
project_name = service
username = neutron
password = servicepassword
# line 731: add (MariaDB connection info)

[database]
connection = mysql://neutron:password@10.0.0.30/neutron_ml2
# line 780: add (Nova auth info)

[nova]
auth_url = http://10.0.0.30:35357
auth_plugin = password
project_domain_id = default
user_domain_id = default
region_name = RegionOne
project_name = service
username = nova
password = servicepassword
# line 956: add (RabbitMQ auth info)

[oslo_messaging_rabbit]
rabbit_host = 10.0.0.30
rabbit_port = 5672
rabbit_userid = guest
rabbit_password = password
[root@dlp ~(keystone)]#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# line 7: add ( it's OK with no value for "tenant_network_types" (set later if need) )

type_drivers = flat,vlan,gre,vxlan
tenant_network_types =
mechanism_drivers = openvswitch
# line 118: uncomment and add

enable_security_group = True
firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
# bottom line: uncomment

enable_ipset = True
[root@dlp ~(keystone)]#
vi /etc/nova/nova.conf
# add follows into [DEFAULT] section

network_api_class=nova.network.neutronv2.api.API
security_group_api=neutron
linuxnet_interface_driver=nova.network.linux_net.LinuxOVSInterfaceDriver
firewall_driver=nova.virt.firewall.NoopFirewallDriver
# add follows to the end : Neutron auth info

[neutron]
url=http://10.0.0.30:9696
auth_strategy=keystone
admin_auth_url=http://10.0.0.30:35357/v2.0
admin_tenant_name=service
admin_username=neutron
admin_password=servicepassword
[root@dlp ~(keystone)]#
ln -s /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugin.ini

[root@dlp ~(keystone)]#
su -s /bin/bash neutron -c "neutron-db-manage --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugin.ini upgrade head"

[root@dlp ~(keystone)]#
systemctl start neutron-server

[root@dlp ~(keystone)]#
systemctl enable neutron-server

[root@dlp ~(keystone)]#
systemctl restart openstack-nova-api

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