基于OpenStack构建企业私有云（5）Neutron

在OpenStack世界中，网络组件最初叫nova-network，nova-network实现简单，直接采用基于Linux内核的Linux网桥。由于少了很多层抽象，所以比较简单稳定算。但是它的不足之处是支持的插件少（只支持Linux网桥），支持的网络拓扑少（只支持flat, vlan)。

1.Neutron安装

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

2.Neutron数据库配置

[root@linux-node1 ~]# vim /etc/neutron/neutron.conf
[database]
connection = mysql+pymysql://neutron:neutron@192.168.56.11:3306/neutron

3.Keystone连接配置

[DEFAULT]
…
auth_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

4.RabbitMQ相关设置

[root@linux-node1 ~]# vim /etc/neutron/neutron.conf
[DEFAULT]
transport_url = rabbit://openstack:openstack@192.168.56.11

5.Neutron网络基础配置

[DEFAULT]
core_plugin = ml2
service_plugins =

6.网络拓扑变化Nova通知配置

[DEFAULT]
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

7.在 [oslo_concurrency] 部分，配置锁路径：

[oslo_concurrency]
lock_path = /var/lib/neutron/tmp

8.Neutron ML2配置

[root@linux-node1 ~]# vim /etc/neutron/plugins/ml2/ml2_conf.ini
[ml2]
type_drivers = flat,vlan,gre,vxlan,geneve #支持多选，所以把所有的驱动都选择上。
tenant_network_types = flat,vlan,gre,vxlan,geneve #支持多项，所以把所有的网络类型都选择上。
mechanism_drivers = linuxbridge,openvswitch,l2population #选择插件驱动，支持多选，开源的有linuxbridge和openvswitch
#启用端口安全扩展驱动
extension_drivers = port_security,qos

[ml2_type_flat]
#设置网络提供
flat_networks = provider

[securitygroup]
#启用ipset
enable_ipset = True

9.Neutron Linuxbridge配置

[root@linux-node1 ~]# vim /etc/neutron/plugins/ml2/linuxbridge_agent.ini
[linux_bridge]
physical_interface_mappings = provider:eth0

[vxlan]
#禁止vxlan网络
enable_vxlan = False

[securitygroup]
firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver
enable_security_group = True

10.Neutron DHCP-Agent配置

[root@linux-node1 ~]# vim /etc/neutron/dhcp_agent.ini
[DEFAULT]
interface_driver = linuxbridge
dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq
enable_isolated_metadata = True

11.Neutron metadata配置

[root@linux-node1 ~]# vim /etc/neutron/metadata_agent.ini
[DEFAULT]
nova_metadata_host = 192.168.56.11

metadata_proxy_shared_secret = unixhot.com

12.Neutron相关配置在nova.conf

[root@linux-node1 ~]# vim /etc/nova/nova.conf
[neutron]
url = 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
service_metadata_proxy = True
metadata_proxy_shared_secret = unixhot.com

[root@linux-node1 ~]# ln -s /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugin.ini

同步数据库
[root@linux-node1 ~]# 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

13.重启计算API 服务

# systemctl restart openstack-nova-api.service

启动网络服务并配置他们开机自启动。
# systemctl enable neutron-server.service \
  neutron-linuxbridge-agent.service neutron-dhcp-agent.service \
  neutron-metadata-agent.service
# systemctl start neutron-server.service \
  neutron-linuxbridge-agent.service neutron-dhcp-agent.service \
  neutron-metadata-agent.service

14.Neutron服务注册
# openstack service create --name neutron --description "OpenStack Networking" network
创建endpoint
# openstack endpoint create --region RegionOne network public http://192.168.56.11:9696
# openstack endpoint create --region RegionOne network internal http://192.168.56.11:9696
# openstack endpoint create --region RegionOne network admin http://192.168.56.11:9696

15.测试Neutron安装

[root@linux-node1 ~]# openstack network agent list

Neutron计算节点部署

安装软件包

 [root@linux-node2 ~]# yum install -y openstack-neutron openstack-neutron-linuxbridge ebtables


1.Keystone连接配置
[root@linux-node2 ~]# vim /etc/neutron/neutron.conf
[DEFAULT]
…
auth_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

2.RabbitMQ相关设置
[root@linux-node2 ~]# vim /etc/neutron/neutron.conf
[DEFAULT]
transport_url = rabbit://openstack:openstack@192.168.56.11
#请注意是在DEFAULT配置栏目下，因为该配置文件有多个transport_url的配置

3.锁路径
[oslo_concurrency]
lock_path = /var/lib/neutron/tmp

4.配置LinuxBridge配置

[root@linux-node1 ~]# scp /etc/neutron/plugins/ml2/linuxbridge_agent.ini 192.168.56.12:/etc/neutron/plugins/ml2/

5.设置计算节点的nova.conf

[root@linux-node2 ~]# vim /etc/nova/nova.conf
[neutron]
url = 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

重启计算服务
[root@linux-node2 ~]# systemctl restart openstack-nova-compute.service

启动计算节点linuxbridge-agent
[root@linux-node2 ~]# systemctl enable neutron-linuxbridge-agent.service
[root@linux-node2 ~]# systemctl start neutron-linuxbridge-agent.service

在控制节点上测试Neutron安装
[root@linux-node1 ~]# source admin-openstack.sh
[root@linux-node1 ~]# openstack network agent list

看是否有linux-node2.example.com的Linux bridge agent