前言：
整个OpenStack是由控制节点，计算节点，网络节点，存储节点四大部分组成。本篇博文将详细讲解网络节点neutron组件部署过程，整体分为两部分：控制节点和计算节点都需要设置。
网络节点架构
网络节点仅包含Neutron服务
Neutron：负责管理私有网段与公有网段的通信，以及管理虚拟机网络之间的通信/拓扑，管理虚拟机之上的防火等等
网络节点包含三个网络端口
eth0：用于与控制节点进行通信
eth2：用于与除了控制节点之外的计算/存储节点之间的通信
eth3：用于外部的虚拟机与相应网络之间的通信
实验环境：
| 主 机 | 系 统 | IP地址 | 角 色 |
| controller | CentOS7 | 192.168.37.128 | keystone、nova、glance、neutron、ntp、mariadb、rabbitmq、memcached、etcd、apache、 |
| compute | CentOS7 | 192.168.37.130 | nova、neutron、ntp |
| cinder | CentOS7 | 192.168.37.131 | cinder、ntp |
实验过程：++controller节点neutron网络配置++
1、创建nuetron数据库和授权
mysql -u root -p
create database neutron;
grant all privileges on neutron.* to 'neutron'@'localhost' identified by '123456';
grant all privileges on neutron.* TO 'neutron'@'%'identified by '123456';
2、创建用户neutron
source ~/admin-openrc
openstack user create --domain default --password-prompt neutron
3、把neutron用户添加到glance用户和项目中
openstack role add --project service --user neutron admin
4、创建neutron服务
openstack service create --name neutron --description "OpenStack Networking" network
5、创建网络服务API端点
openstack endpoint create --region RegionOne network public http://controller:9696
openstack endpoint create --region RegionOne network internal http://controller:9696
openstack endpoint create --region RegionOne network admin http://controller:9696
6、yum安装neutron软件包
yum install -y openstack-neutron openstack-neutron-ml2 openstack-neutron-linuxbridge ebtables
7、修改配置文件
vim /etc/neutron/neutron.conf
[database]
//729
connection = mysql+pymysql://neutron:123456@controller/neutron
[DEFAULT]
//27
auth_strategy = keystone
//30
core_plugin = ml2 #插件ml2
//33 不写代表禁用其他插件
service_plugins =
//570
transport_url = rabbit://openstack:123456@controller
//98
notify_nova_on_port_status_changes = true #nova端口状态通告
//102
notify_nova_on_port_data_changes = true #端口数据通告
[keystone_authtoken] #令牌注册信息
//847
auth_uri = http://controller:5000
auth_url = http://controller:35357
//898
memcached_servers = controller:11211
//1005
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = neutron
password = 123456
[nova]
//1085
auth_url = http://controller:35357
//1089
auth_type = password
//1127
project_domain_name = default
//1156
user_domain_name = default
//1069
region_name = RegionOne
//1135
project_name = service
//1163
username = nova
//1121
password = 123456
[oslo_concurrency]
//1179
lock_path = /var/lib/neutron/tmp
8、配置网络二层插件
vim /etc/neutron/plugins/ml2/ml2_conf.ini
[ml2]
//136
type_drivers = flat,vlan #flat-桥接 vlan-局域网
//141 设置空是禁用本地网络
tenant_network_types =
//145
mechanism_drivers = linuxbridge
//150
extension_drivers = port_security
[ml2_type_flat]
//186
flat_networks = provider #桥接网络类型
[securitygroup]
//263
enable_ipset = true #安全组
9、配置Linux网桥
vim /etc/neutron/plugins/ml2/linuxbridge_agent.ini
[linux_bridge]
//157
physical_interface_mappings = provider:ens33
[vxlan]
//208
enable_vxlan = false
[securitygroup]
//193
enable_security_group = true #开启安全组
//188
firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver
10、配置DHCP
vim /etc/neutron/dhcp_agent.ini
//16
interface_driver = linuxbridge #接口类型
//28
dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq
//37
enable_isolated_metadata = true
11、配置metadata
vim /etc/neutron/metadata_agent.ini
[DEFAULT]
//22
nova_metadata_host = controller
//34
metadata_proxy_shared_secret = 123456
12、配置计算服务使用网络服务
vim /etc/nova/nova.conf #在``[neutron]`` 部分，配置访问参数
[neutron]
//7613
url = http://controller:9696
//7689
auth_url = http://controller:35357
//7683
auth_type = password
//7710
project_domain_name = default
//7763
user_domain_name = default
//7757
region_name = RegionOne
//7704
project_name = service
//7730
username = neutron
//7739
password = 123456
//7652
service_metadata_proxy = true #metadata代理开启
//7584
metadata_proxy_shared_secret = 123456 #代理的认证密钥
13、建立服务软连接
ln -s /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugin.ini
14、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
15、重启compute API服务，并开启相关服务
systemctl restart openstack-nova-api.service
systemctl enable neutron-server.service
systemctl enable neutron-linuxbridge-agent.service
systemctl enable neutron-dhcp-agent.service
systemctl enable neutron-metadata-agent.service
systemctl restart neutron-server.service
systemctl restart neutron-linuxbridge-agent.service
systemctl restart neutron-dhcp-agent.service
systemctl restart neutron-metadata-agent.service
++compute节点neutron网络配置++
1、yum安装neutron包
yum install -y openstack-neutron-linuxbridge ebtables ipset
2、配置公共组件
vim /etc/neutron/neutron.conf
[DEFAULT]
//27
auth_strategy = keystone
//570
transport_url = rabbit://openstack:123456@controller
[keystone_authtoken]
//847
auth_uri = http://controller:5000
auth_url = http://controller:35357
//898
memcached_servers = controller:11211
//1005
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = neutron
password = 123456
[oslo_concurrency]
//1180
lock_path = /var/lib/neutron/tmp
3、配置Linux网桥
vim /etc/neutron/plugins/ml2/linuxbridge_agent.ini
[linux_bridge]
//157
physical_interface_mappings = provider:ens33
[vxlan]
//208
enable_vxlan = false
[securitygroup]
//193
enable_security_group = true
//188
firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver
4、配置计算节点网络服务
vim /etc/nova/nova.conf
[neutron]
//7534
url = http://controller:9696
//7610
auth_url = http://controller:35357
//7604
auth_type = password
//7631
project_domain_name = default
//7657
user_domain_name = default
//7678
region_name = RegionOne
//7625
project_name = service
//7651
username = neutron
//7660
password = 123456
5、开启相关服务
systemctl restart openstack-nova-compute.service
systemctl enable neutron-linuxbridge-agent.service
systemctl start neutron-linuxbridge-agent.service
到此为止，neutron组件已经安装完成，谢谢阅读！