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1、官方文档

在OpenStack官方安装文档中，提供了两个网络配置选项：

Option1：Provider networks
Option2：Self-service networks

这两个选项并不冲突，可以在OpenStack环境中同时配置。

在《OpenStack Yoga版安装笔记（十三）neutron安装》中，对这两个选项做了说明，并参考官方文档《Networking Option 1: Provider networks》已经完成Provider networks配置。

本文补充选项2 ：Self-serivice network配置，注意配置完成后，还需要执行配置后的工作。

建议从Yoga版的Neutron安装界面进入：

2、两个配置选项的差异比较

	Option1: Provider networks *（在之前的文档中已经完成配置）*	Option2: Self-service networks （红色标记为本次需要补充配置）
	controller node	controller node
	# apt install neutron-server neutron-plugin-ml2 \neutron-linuxbridge-agent neutron-dhcp-agent \neutron-metadata-agent	# apt install neutron-server neutron-plugin-ml2 \neutron-linuxbridge-agent neutron-l3-agent neutron-dhcp-agent \neutron-metadata-agent
/etc/neutron /neutron.conf	[DEFAULT] # ... core_plugin = ml2 service_plugins =	[DEFAULT] # ... core_plugin = ml2 service_plugins = router allow_overlapping_ips = true
/etc/neutron/plugins /ml2/ml2_conf.ini	[ml2] # ... type_drivers = flat,vlan	[ml2] # ... type_drivers = flat,vlan,vxlan
	[ml2] # ... tenant_network_types =	[ml2] # ... tenant_network_types = vxlan
	[ml2] # ... mechanism_drivers = linuxbridge	[ml2] # ... mechanism_drivers = linuxbridge,l2population
	[ml2] # ... extension_drivers = port_security	[ml2] # ... extension_drivers = port_security
	[ml2_type_flat] # ... flat_networks = provider	[ml2_type_flat] # ... flat_networks = provider
		[ml2_type_vxlan] # ... vni_ranges = 1:1000
	[securitygroup] # ... enable_ipset = true	[securitygroup] # ... enable_ipset = true
/etc/neutron/plugins /ml2/linuxbridge_agent.ini	[linux_bridge] physical_interface_mappings = provider:ens34	[linux_bridge] physical_interface_mappings = provider:ens34
	[vxlan] enable_vxlan = false	[vxlan] enable_vxlan = true local_ip = 10.0.20.11 l2_population = true
	[securitygroup] # ... enable_security_group = true firewall_driver = neutron.agent.linux. iptables_firewall. IptablesFirewallDriver	[securitygroup] # ... enable_security_group = true firewall_driver = neutron.agent.linux. iptables_firewall. IptablesFirewallDriver
/etc/neutron/l3_agent.ini	无	[DEFAULT] # ... interface_driver = linuxbridge
	compute1 node	compute1 node
/etc/neutron/plugins /ml2/linuxbridge_agent.ini	apt install neutron-linuxbridge-agent	apt install neutron-linuxbridge-agent
	[linux_bridge] physical_interface_mappings = ens35	[linux_bridge] physical_interface_mappings = 35
	[vxlan] enable_vxlan = false	[vxlan] enable_vxlan = true local_ip = 10.0.20.12 l2_population = true

3、Self-service Networks配置

3.1 前提

1、已经完成Neutron服务安装

2、已经完成Option 1: Provider networks配置

3.2 Controller node补充配置

1、安装软件包

root@controller:~# apt install neutron-l3-agent
注意：安装过程中，出现以下提示的时候，选择保留现有的neutron.conf文件：
Configuration file '/etc/neutron/neutron.conf'==> Modified (by you or by a script) since installation.==> Package distributor has shipped an updated version.What would you like to do about it ?  Your options are:Y or I  : install the package maintainer's versionN or O  : keep your currently-installed versionD     : show the differences between the versionsZ     : start a shell to examine the situationThe default action is to keep your current version.
*** neutron.conf (Y/I/N/O/D/Z) [default=N] ? N

2、vi /etc/neutron/neutron.conf

[DEFAULT]
core_plugin = ml2
service_plugins = router
allow_overlapping_ips = true

3、vi /etc/neutron/plugins/ml2/ml2_conf.ini

root@controller:~# vi /etc/neutron/plugins/ml2/ml2_conf.ini
...
[ml2]
type_drivers = flat,vlan,vxlan
tenant_network_types = vxlan
mechanism_drivers = linuxbridge,l2population
extension_drivers = port_security[ml2_type_vxlan]
vni_ranges = 1:1000

4、vi /etc/neutron/plugins/ml2/linuxbridge_agent.ini

root@controller:~# vi /etc/neutron/plugins/ml2/linuxbridge_agent.ini
[vxlan]
enable_vxlan = true
local_ip = 10.0.20.11
l2_population = true

5、vi /etc/neutron/l3_agent.ini

root@controller:~# vi /etc/neutron/l3_agent.ini
[DEFAULT]
interface_driver = linuxbridge

3.3 Compute1 node补充配置

root@compute1:~# vi /etc/neutron/plugins/ml2/linuxbridge_agent.ini

root@compute1:~# vi /etc/neutron/plugins/ml2/linuxbridge_agent.ini
[vxlan]
enable_vxlan = true
local_ip = 10.0.20.12
l2_population = true

3.4 Finalize installation（controller node）

root@controller:~# su -s /bin/sh -c "neutron-db-manage --config-file /etc/neutron/neutron.conf \
>   --config-file /etc/neutron/plugins/ml2/ml2_conf.ini upgrade head" neutron
INFO  [alembic.runtime.migration] Context impl MySQLImpl.
INFO  [alembic.runtime.migration] Will assume non-transactional DDL.Running upgrade for neutron ...
INFO  [alembic.runtime.migration] Context impl MySQLImpl.
INFO  [alembic.runtime.migration] Will assume non-transactional DDL.OK
root@controller:~# root@controller:~# service nova-api restart
root@controller:~# service neutron-server restart
root@controller:~# service neutron-linuxbridge-agent restart
root@controller:~# service neutron-dhcp-agent restart
root@controller:~# service neutron-metadata-agent restart
root@controller:~# service neutron-l3-agent restart

3.5 Finalize installation（compute1 node）

root@compute1:~# service nova-compute restart
root@compute1:~# service neutron-linuxbridge-agent restart

3.6 Verify operation

List agents to verify successful launch of the neutron agents:

root@osclient ~(admin/amdin)# openstack network agent list
+--------------------------------------+--------------------+------------+-------------------+-------+-------+---------------------------+
| ID                                   | Agent Type         | Host       | Availability Zone | Alive | State | Binary                    |
+--------------------------------------+--------------------+------------+-------------------+-------+-------+---------------------------+
| 4516d406-7b90-4029-93a9-6a7fbe964bc2 | DHCP agent         | controller | nova              | :-)   | UP    | neutron-dhcp-agent        |
| 784c22ee-79e2-4bfa-84c5-4a2456a805e4 | L3 agent           | controller | nova              | :-)   | UP    | neutron-l3-agent          |
| dd50147c-5a72-4386-9073-a4431c47a3b4 | Metadata agent     | controller | None              | :-)   | UP    | neutron-metadata-agent    |
| f05c0a19-5657-4e12-8f4c-f5ea5dfc7043 | Linux bridge agent | compute1   | None              | :-)   | UP    | neutron-linuxbridge-agent |
| fc147e91-1504-4a3c-8709-0665c97b4cb6 | Linux bridge agent | controller | None              | :-)   | UP    | neutron-linuxbridge-agent |
+--------------------------------------+--------------------+------------+-------------------+-------+-------+---------------------------+
root@osclient ~(admin/amdin)#

The output should indicate four agents on the controller node and one agent on each compute node.