可选:安装neutron网络服务节点（neutron01网络节点192.168.0.30）
网络配置按照官网文档的租户自助网络

配置系统参数

echo 'net.ipv4.ip_forward = 1' >>/etc/sysctl.conf
sysctl -p

安装train版yum源

yum install centos-release-openstack-train -y

安装客户端

yum install python-openstackclient -y

安装组件

yum install openstack-neutron openstack-neutron-ml2 openstack-neutron-linuxbridge ebtables openstack-utils -y
yum install conntrack-tools -y

编辑neutron服务配置文件/etc/neutron/neutron.conf

#配置二层网络
cp -a /etc/neutron/neutron.conf{,.bak}
grep -Ev '^$|#' /etc/neutron/neutron.conf.bak > /etc/neutron/neutron.conf

openstack-config --set /etc/neutron/neutron.conf database connection mysql+pymysql://neutron:NEUTRON_DBPASS@controller/neutron
openstack-config --set /etc/neutron/neutron.conf DEFAULT core_plugin ml2
openstack-config --set /etc/neutron/neutron.conf DEFAULT service_plugins router
openstack-config --set /etc/neutron/neutron.conf DEFAULT allow_overlapping_ips true
openstack-config --set /etc/neutron/neutron.conf DEFAULT transport_url rabbit://openstack:RABBIT_PASS@controller
openstack-config --set /etc/neutron/neutron.conf DEFAULT auth_strategy keystone
openstack-config --set /etc/neutron/neutron.conf DEFAULT notify_nova_on_port_status_changes true
openstack-config --set /etc/neutron/neutron.conf DEFAULT notify_nova_on_port_data_changes true
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken www_authenticate_uri http://controller:5000
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken auth_url http://controller:5000
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken memcached_servers controller:11211
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken auth_type password
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken project_domain_name default
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken user_domain_name default
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken project_name service
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken username neutron
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken password NEUTRON_PASS
openstack-config --set /etc/neutron/neutron.conf oslo_concurrency lock_path /var/lib/neutron/tmp
openstack-config --set /etc/neutron/neutron.conf nova auth_url http://controller:5000
openstack-config --set /etc/neutron/neutron.conf nova auth_type password
openstack-config --set /etc/neutron/neutron.conf nova project_domain_name default
openstack-config --set /etc/neutron/neutron.conf nova user_domain_name default
openstack-config --set /etc/neutron/neutron.conf nova region_name RegionOne
openstack-config --set /etc/neutron/neutron.conf nova project_name service
openstack-config --set /etc/neutron/neutron.conf nova username nova
openstack-config --set /etc/neutron/neutron.conf nova password NOVA_PASS

ML2 plugin的配置文件ml2_conf.ini

cp -a /etc/neutron/plugins/ml2/ml2_conf.ini{,.bak}
grep -Ev '^$|#' /etc/neutron/plugins/ml2/ml2_conf.ini.bak > /etc/neutron/plugins/ml2/ml2_conf.ini

openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ml2 type_drivers flat,vlan,vxlan
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ml2 tenant_network_types vxlan
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ml2 mechanism_drivers linuxbridge,l2population
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ml2 extension_drivers port_security
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ml2_type_flat flat_networks provider
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ml2_type_vxlan vni_ranges 1:1000
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini securitygroup enable_ipset true

配置Linux网桥代理

#Linux网桥代理为实例构建第2层（桥接和交换）虚拟网络基础结构并处理安全组
#修改配置文件/etc/neutron/plugins/ml2/linuxbridge_agent.ini

#官网配置文档中：
#PROVIDER_INTERFACE_NAME指的是eth0网卡，就是连接外部网络的那块网卡
#OVERLAY_INTERFACE_IP_ADDRESS指的是控制节点访问外网的IP地址

cp -a /etc/neutron/plugins/ml2/linuxbridge_agent.ini{,.bak}
grep -Ev '^$|#' /etc/neutron/plugins/ml2/linuxbridge_agent.ini.bak > /etc/neutron/plugins/ml2/linuxbridge_agent.ini

openstack-config --set /etc/neutron/plugins/ml2/linuxbridge_agent.ini linux_bridge physical_interface_mappings provider:eth0
openstack-config --set /etc/neutron/plugins/ml2/linuxbridge_agent.ini vxlan enable_vxlan true
openstack-config --set /etc/neutron/plugins/ml2/linuxbridge_agent.ini vxlan local_ip 192.168.0.30
openstack-config --set /etc/neutron/plugins/ml2/linuxbridge_agent.ini vxlan l2_population true
openstack-config --set /etc/neutron/plugins/ml2/linuxbridge_agent.ini securitygroup enable_security_group true
openstack-config --set /etc/neutron/plugins/ml2/linuxbridge_agent.ini securitygroup firewall_driver neutron.agent.linux.iptables_firewall.IptablesFirewallDriver

#修改linux内核参数设置为1
echo 'net.bridge.bridge-nf-call-iptables=1' >>/etc/sysctl.conf
echo 'net.bridge.bridge-nf-call-ip6tables=1' >>/etc/sysctl.conf

#启用网络桥接器支持，加载 br_netfilter 内核模块
modprobe br_netfilter
sysctl -p

配置第3层 l3代理为自助式虚拟网络提供路由和NAT服务

#配置三层网络
cp -a /etc/neutron/l3_agent.ini{,.bak}
grep -Ev '^$|#' /etc/neutron/l3_agent.ini.bak > /etc/neutron/l3_agent.ini

openstack-config --set /etc/neutron/l3_agent.ini DEFAULT interface_driver linuxbridge

配置DHCP代理，DHCP代理为虚拟网络提供DHCP服务

#修改配置文件/etc/neutron/dhcp_agent.ini
cp -a /etc/neutron/dhcp_agent.ini{,.bak}
grep -Ev '^$|#' /etc/neutron/dhcp_agent.ini.bak > /etc/neutron/dhcp_agent.ini

openstack-config --set /etc/neutron/dhcp_agent.ini DEFAULT interface_driver linuxbridge
openstack-config --set /etc/neutron/dhcp_agent.ini DEFAULT dhcp_driver neutron.agent.linux.dhcp.Dnsmasq
openstack-config --set /etc/neutron/dhcp_agent.ini DEFAULT enable_isolated_metadata true

配置元数据代理

#元数据代理提供配置信息，例如实例的凭据
#修改配置文件/etc/neutron/metadata_agent.ini ，并为元数据设置密码METADATA_SECRET
cp -a /etc/neutron/metadata_agent.ini{,.bak}
grep -Ev '^$|#' /etc/neutron/metadata_agent.ini.bak > /etc/neutron/metadata_agent.ini

openstack-config --set /etc/neutron/metadata_agent.ini DEFAULT nova_metadata_host controller
openstack-config --set /etc/neutron/metadata_agent.ini DEFAULT metadata_proxy_shared_secret METADATA_SECRET

创建ml2的软连接 文件指向ML2插件配置的软链接

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

填充数据库

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

在controller控制节点上配置nova服务与网络节点服务进行交互
如果是单独安装网络节点则添加以下操作，如果已经在配置计算节点的网络服务时，在控制节点的配置文件/etc/nova/nova.conf添加了neutron模块 ,则不用再次添加

openstack-config --set /etc/nova/nova.conf neutron url http://controller:9696 #此条官方文档未添加
openstack-config --set /etc/nova/nova.conf neutron auth_url http://controller:5000
openstack-config --set /etc/nova/nova.conf neutron auth_type password
openstack-config --set /etc/nova/nova.conf neutron project_domain_name default
openstack-config --set /etc/nova/nova.conf neutron user_domain_name default
openstack-config --set /etc/nova/nova.conf neutron region_name RegionOne
openstack-config --set /etc/nova/nova.conf neutron project_name service
openstack-config --set /etc/nova/nova.conf neutron username neutron
openstack-config --set /etc/nova/nova.conf neutron password NEUTRON_PASS
openstack-config --set /etc/nova/nova.conf neutron service_metadata_proxy true
openstack-config --set /etc/nova/nova.conf neutron metadata_proxy_shared_secret METADATA_SECRET

#在controller控制节点上重新启动nova API计算服务
systemctl restart openstack-nova-api.service

回到网络节点启动neutron服务和配置开机启动

systemctl enable neutron-server.service neutron-linuxbridge-agent.service neutron-dhcp-agent.service neutron-metadata-agent.service
systemctl restart neutron-server.service neutron-linuxbridge-agent.service neutron-dhcp-agent.service neutron-metadata-agent.service

因配置了第3层l3网络服务 需要启动第三层服务

systemctl enable neutron-l3-agent.service
systemctl restart neutron-l3-agent.service

可以到控制节点再次验证Neutron网络服务-（controller控制节点192.168.0.10）

#列出已加载的扩展，以验证该neutron-server过程是否成功启动
[root@controller ~]# openstack extension list --network

#列出代理商以验证成功
[root@controller ~]# openstack network agent list
+--------------------------------------+--------------------+------------+-------------------+-------+-------+---------------------------+
| ID | Agent Type | Host | Availability Zone | Alive | State | Binary |
+--------------------------------------+--------------------+------------+-------------------+-------+-------+---------------------------+
| 44624896-15d1-4029-8ac1-e2ba3f850ca6 | DHCP agent | controller | nova | :-) | UP | neutron-dhcp-agent |
| 50b90b02-b6bf-4164-ae29-a20592d6a093 | Linux bridge agent | controller | None | :-) | UP | neutron-linuxbridge-agent |
| 52761bf6-164e-4d91-bcbe-01a3862b0a4e | DHCP agent | neutron01 | nova | :-) | UP | neutron-dhcp-agent |
| 82780de2-9ace-4e24-a150-f6b6563d7fc8 | Linux bridge agent | computel01 | None | :-) | UP | neutron-linuxbridge-agent |
| b22dfdda-fcc7-418e-bdaf-6b89e454ee83 | Linux bridge agent | neutron01 | None | :-) | UP | neutron-linuxbridge-agent |
| bae84064-8cf1-436a-9cb2-bf9f906a9357 | Metadata agent | neutron01 | None | :-) | UP | neutron-metadata-agent |
| cbd972ef-59f2-4fba-b3b3-2e12c49c5b03 | L3 agent | neutron01 | nova | :-) | UP | neutron-l3-agent |
| dda8af2f-6c0b-427a-97f7-75fd1912c60d | L3 agent | controller | nova | :-) | UP | neutron-l3-agent |
| f2193732-9f88-4e87-a82c-a81e1d66c2e0 | Metadata agent | controller | None | :-) | UP | neutron-metadata-agent |
+--------------------------------------+--------------------+------------+-------------------+-------+-------+---------------------------+