Openstack云平台搭建课程五·网络服务Neutron

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这是搭建Openstack云平台的第五堂课,主要讲解网络组件neutron的配置过程。Neutron负责Openstack中的网络资源,提供ip、vlan、vxlan、route等服务。


创建数据库用户

mysql -uroot -pMariadb123

create database neutron;

grant all privileges on neutron.* to 'neutron'@'localhost' identified by 'Neutron123';

grant all privileges on neutron.* to 'neutron'@'%' identified by 'Neutron123';

flush privileges;

exit

配置neutron服务凭证

创建neutron服务凭证

#source /opt/scripts/admin

openstack user create \

--domain default \

--password-prompt neutron

输入密码(Neutron123)后继续:

openstack role add \

--project service \

--user neutron admin

openstack service create \

--name neutron \

--description "OpenStack Networking" network

创建endpoint

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

配置控制节点上的网络服务

安装 neutron

yum -y install openstack-neutron openstack-neutron-ml2 openstack-neutron-linuxbridge

配置 neutron

vi /etc/neutron/neutron.conf

[DEFAULT]
bind_host = 10.10.100.150
core_plugin = ml2
service_plugins = 
allow_overlapping_ips = True
auth_strategy = keystone
notify_nova_on_port_status_changes = True
notify_nova_on_port_data_changes = True
transport_url = rabbit://openstack:Openstack123@controller:5672

[database]
connection = mysql+pymysql://neutron:Neutron123@controller/neutron

[keystone_authtoken]
auth_uri = http://controller:5000
auth_url = http://controller:35357
memcached_servers = controller:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = neutron
password = Neutron123

[nova]
auth_url = http://controller:35357
auth_type = password
project_domain_name = Default
user_domain_name = Default
region_name = RegionOne
project_name = service
username = nova
password = Nova123

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

配置 modular layer 2

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

[ml2]
type_drivers = flat,vlan,vxlan
tenant_network_types = vxlan
mechanism_drivers = linuxbridge,l2population
#如果不使用vxlan只使用vlan,以上三行改为如下三行
#type_drivers = flat,vlan
#tenant_network_types =
#mechanism_drivers = linuxbridge
extension_drivers = port_security

[ml2_type_flat]
flat_networks = provider

[ml2_type_vlan]
#如果不使用vxlan只使用vlan,去掉如下配置的注释
#network_vlan_ranges = provider

[ml2_type_vxlan]
#值可自行调整;如果不使用vxlan,注释该配置
vni_ranges = 1:1000

[securitygroup]
enable_ipset = True

配置 linuxbridge agent

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

[linux_bridge]
physical_interface_mappings = provider:ens34

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

[vxlan]
#如果不使用vxlan,注释以下三项配置,或enable_vxlan = False
enable_vxlan = True
local_ip = 10.10.100.150
l2_population = True

注意:

  • physical_interface_mappings 为底层的物理公共网络接口
  • local_ip 为控制节点的管理网络的IP地址

启用操作系统内核网桥过滤器:

vi /usr/lib/sysctl.d/00-system.conf

net.bridge.bridge-nf-call-iptables=1
net.bridge.bridge-nf-call-ip6tables=1

配置 layer 3 agent

vi /etc/neutron/l3_agent.ini

[DEFAULT]
interface_driver = linuxbridge

配置 dhcp agent

vi /etc/neutron/dhcp_agent.ini

[DEFAULT]
interface_driver = linuxbridge
dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq
enable_isolated_metadata = True

配置 metadata agent

vi /etc/neutron/metadata_agent.ini

[DEFAULT]
nova_metadata_ip = 10.10.100.150
metadata_proxy_shared_secret = Metadata123

配置 nova

vi /etc/nova/nova.conf

[neutron]
url = http://controller:9696
auth_url = http://controller:35357
auth_type = password
project_domain_name = Default
user_domain_name = Default
region_name = RegionOne
project_name = service
username = neutron
password = Neutron123
service_metadata_proxy = True
metadata_proxy_shared_secret = Metadata123

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

同步数据

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

启动应用

systemctl enable openstack-nova-api neutron-server neutron-linuxbridge-agent neutron-dhcp-agent neutron-metadata-agent neutron-l3-agent

systemctl start openstack-nova-api neutron-server neutron-linuxbridge-agent neutron-dhcp-agent neutron-metadata-agent neutron-l3-agent

至此,控制节点上的网络服务已经完成配置。

配置计算节点上的网络服务

安装 neutron

yum -y install openstack-neutron-linuxbridge

配置 neutron

vi /etc/neutron/neutron.conf

[DEFAULT]
bind_host = 10.10.100.151
auth_strategy = keystone
transport_url = rabbit://openstack:Openstack123@controller:5672

[keystone_authtoken]
auth_uri = http://controller:5000
auth_url = http://controller:35357
memcached_servers = controller:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = neutron
password = Neutron123

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

配置 linuxbridge agent

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

[linux_bridge]
physical_interface_mappings = provider:ens34

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

[vxlan]
#如果不使用vxlan,注释以下三项配置,或enable_vxlan = False
enable_vxlan = true
local_ip = 10.10.100.151
l2_population = true

配置 nova

vi /etc/nova/nova.conf

[neutron]
url = http://controller:9696
auth_url = http://controller:35357
auth_type = password
region_name = RegionOne
project_domain_name = Default
user_domain_name = Default
project_name = service
username = neutron
password = Neutron123

同样需要确保操作系统内核支持网桥过滤器(参照控制节点)。

启动应用

systemctl enable neutron-linuxbridge-agent

systemctl start neutron-linuxbridge-agent

验证结果

在控制节点上执行以下命令,查看网络状态。

openstack extension list --network

openstack network agent list

至此,计算节点上的网络服务也完成配置。

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