一、环境准备

1、虚拟机准备

IP地址     主机名         操作系统
192.168.56.11   linux-node1     CentOS7
192.168.56.12   linux-node2     CentOS7

其中，linux-node1当作控制节点

linux-node2当作计算节点

二、neutron服务

OpenStack网络（neutron）管理OpenStack环境中所有虚拟网络基础设施（VNI），物理网络基础设施（PNI）的接入层。

三、安装和配置

1、安装

[root@linux-node1 ~]# yum install -y openstack-neutron openstack-neutron-ml2 \
openstack-neutron-linuxbridge ebtables

2、配置

先决条件

（1）创建数据库

（2）获得 admin 凭证来获取只有管理员能执行的命令的访问权限

创建用户

3、配置数据库连接

我们选择配置公共网络

connection = mysql+pymysql://neutron:neutron@192.168.56.11/neutron

4、配置keystone

vim /etc/neutron/neutron.confauth_strategy = keystone[keystone_authtoken]
auth_uri = http://192.168.56.11:5000
auth_url = http://192.168.56.11:35357
memcached_servers = 192.168.56.11:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = neutron
password = neutron

5、配置rabbitmq

vim /etc/neutron/neutron.confrpc_backend = rabbitrabbit_host = 192.168.56.11
rabbit_userid = openstack
rabbit_password = openstack

6、配置neutron

vim /etc/neutron/neutron.conf
core_plugin = ml2service_plugins =#在[DEFAULT]和[nova]部分，配置网络服务来通知计算节点的网络拓扑变化
notify_nova_on_port_status_changes = true
notify_nova_on_port_data_changes = true[nova]
auth_url = http://192.168.56.11:35357
auth_type = password
project_domain_name = default
user_domain_name = default
region_name = RegionOne
project_name = service
username = nova
password = nova#配置锁路径
lock_path = /var/lib/neutron/tmp

7、配置Modular Layer2插件

ML2插件使用Linuxbridge机制来为实例创建layer－2虚拟网络基础设施

type_drivers = flat,vlan,gre,vxlan,geneve
tenant_network_types =
mechanism_drivers = linuxbridge,openvswitch
extension_drivers = port_security
flat_networks = public
enable_ipset = true

8、配置Linuxbridge代理

[root@linux-node1 ~]# vi /etc/neutron/plugins/ml2/linuxbridge_agent.ini physical_interface_mappings = public:eth0
firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver
enable_security_group = true
enable_vxlan = false

9、配置DHCP代理

vim /etc/neutron/dhcp_agent.iniinterface_driver = neutron.agent.linux.interface.BridgeInterfaceDriver
dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq
enable_isolated_metadata = true

10、配置元数据代理

vim /etc/neutron/metadata_agent.ininova_metadata_ip = 192.168.56.11
metadata_proxy_shared_secret = oldboy

11、为nova-api配置网络服务

vim /etc/nova/nova.confurl = http://192.168.56.11:9696
auth_url = http://192.168.56.11:35357
auth_type = password
project_domain_name = default
user_domain_name = default
region_name = RegionOne
project_name = service
username = neutron
password = neutron

12、完成安装后的操作

（1）创建软链接

网络服务初始化脚本需要一个超链接 /etc/neutron/plugin.ini指向ML2插件配置文件/etc/neutron/plugins/ml2/ml2_conf.ini。如果超链接不存在，使用下面的命令创建它

ln -s /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugin.ini

（2）同步数据库

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

（3）重启nova-api服务

systemctl restart openstack-nova-api.service

（4）启动neutron，并设置开机启动

[root@linux-node1 ~]# systemctl enable neutron-server.service \
>   neutron-linuxbridge-agent.service neutron-dhcp-agent.service \
>   neutron-metadata-agent.service[root@linux-node1 ~]# systemctl start neutron-server.service \
>   neutron-linuxbridge-agent.service neutron-dhcp-agent.service \
>   neutron-metadata-agent.service

13、在keystone上做服务注册

在创建之前，要先执行环境变量脚本

[root@linux-node1 ~]# source admin-openstack.sh

再创建网络

[root@linux-node1 ~]# openstack service create --name neutron --description "OpenStack Networking" network
+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | OpenStack Networking             |
| enabled     | True                             |
| id          | 8e34c26e3fec40f4bd0bd3f86e20df76 |
| name        | neutron                          |
| type        | network                          |
+-------------+----------------------------------+

创建服务的API endpoint

[root@linux-node1 ~]# openstack endpoint create --region RegionOne   network public http://192.168.56.11:9696
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 7bddf204d5264c678049eef6cc6ab88d |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 8e34c26e3fec40f4bd0bd3f86e20df76 |
| service_name | neutron                          |
| service_type | network                          |
| url          | http://192.168.56.11:9696        |
+--------------+----------------------------------+

[root@linux-node1 ~]# openstack endpoint create --region RegionOne network admin http://192.168.56.11:9696
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | df3c6758c4414671b0978140ee3c6bb2 |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 8e34c26e3fec40f4bd0bd3f86e20df76 |
| service_name | neutron                          |
| service_type | network                          |
| url          | http://192.168.56.11:9696        |
+--------------+----------------------------------+

[root@linux-node1 ~]# openstack endpoint create --region RegionOne network internal http://192.168.56.11:9696
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 415f75265c074ac1bdb10b140c1fec8e |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 8e34c26e3fec40f4bd0bd3f86e20df76 |
| service_name | neutron                          |
| service_type | network                          |
| url          | http://192.168.56.11:9696        |
+--------------+----------------------------------+

验证是否创建成功

[root@linux-node1 ~]# neutron agent-list
+--------------------------------------+--------------------+-------------+-------------------+-------+----------------+---------------------------+
| id                                   | agent_type         | host        | availability_zone | alive | admin_state_up | binary                    |
+--------------------------------------+--------------------+-------------+-------------------+-------+----------------+---------------------------+
| 0324ab11-18a1-4615-83c0-9359d9696655 | Linux bridge agent | linux-node1 |                   | :-)   | True           | neutron-linuxbridge-agent |
| 3c1c33f7-a236-4799-a4cb-00c486bced17 | DHCP agent         | linux-node1 | nova              | :-)   | True           | neutron-dhcp-agent        |
| b23e4246-d1e9-45af-8d20-036d8585ed77 | Metadata agent     | linux-node1 |                   | :-)   | True           | neutron-metadata-agent    |
+--------------------------------------+--------------------+-------------+-------------------+-------+----------------+---------------------------+