OpenStack Train版-8.安装neutron网络服务（控制节点）

安装neutron网络服务（controller控制节点192.168.0.10）

创建neutron数据库

mysql -uroot
CREATE DATABASE neutron;
GRANT ALL PRIVILEGES ON neutron.* TO 'neutron'@'localhost' IDENTIFIED BY 'NEUTRON_DBPASS';
GRANT ALL PRIVILEGES ON neutron.* TO 'neutron'@'%' IDENTIFIED BY 'NEUTRON_DBPASS';
flush privileges;

创建neutron用户

openstack user create --domain default --password NEUTRON_PASS neutron

向neutron用户添加admin角色

openstack role add --project service --user neutron admin

创建neutron服务实体

openstack service create --name neutron --description "OpenStack Networking" network

创建neutron服务端点

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

安装neutron软件包

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

- openstack-neutron：neutron-server的包
- openstack-neutron-ml2：ML2 plugin的包
- openstack-neutron-linuxbridge：linux bridge network provider相关的包
- ebtables：防火墙相关的包
- conntrack-tools： 该模块可以对iptables进行状态数据包检查

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

#官方配置文档中，
#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 192.168.0.10
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

在控制节点上配置Nova服务与网络服务进行交互

#修改配置文件/etc/nova/nova.conf

openstack-config --set /etc/nova/nova.conf neutron url http://controller:9696
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

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

重新启动nova API计算服务

systemctl restart openstack-nova-api.service

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