Openstack架构构建及详解(5)--Neutron组件，不得不服
a.创建neutron用户
[root@controller ~]# keystone user-create --name neutron --pass NEUTRON_PASS
±---------±---------------------------------+
| Property | Value |
±---------±---------------------------------+
| email | |
| enabled | True |
| id | a7e4e7944d2f4223bd724fcc32678cae |
| name | neutron |
| username | neutron |
±---------±---------------------------------+
b.连接neutron用户到serivce租户和admin角色
[root@controller ~]# keystone user-role-add --user neutron --tenant service --role admin
c.创建neutron服务
[root@controller ~]# keystone service-create --name neutron --type network --description “Openstack Networking”
±------------±---------------------------------+
| Property | Value |
±------------±---------------------------------+
| description | Openstack Networking |
| enabled | True |
| id | 66e916b7b3264a48b0e4420ecd81423f |
| name | neutron |
| type | network |
±------------±---------------------------------+
d.创建neutron服务端点
[root@controller ~]# keystone endpoint-create --service-id $(keystone service-list |awk ‘/network/ {print $2}’) --publicurl http://controller.nice.com:9696 --adminurl http://controller.nice.com:9696 --internalurl http://controller.nice.com:9696 --region regionOne
±------------±---------------------------------+
| Property | Value |
±------------±---------------------------------+
| adminurl | http://controller.nice.com:9696 |
| id | e9fe74bbedd743458feba34cd64c8ef1 |
| internalurl | http://controller.nice.com:9696 |
| publicurl | http://controller.nice.com:9696 |
| region | regionOne |
| service_id | 66e916b7b3264a48b0e4420ecd81423f |
±------------±---------------------------------+
安装网络服务组件
[root@controller ~]# yum install openstack-neutron openstack-neutron-ml2 python-neutronclient which
[root@controller ~]# vim /etc/neutron/neutron.conf
[root@controller ~]# vim /etc/neutron/plugins/ml2/ml2_conf.ini
[root@controller ~]# vim /etc/nova/nova.conf
[root@controller ~]# ln -s /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugin.ini
[root@controller ~]# su -s /bin/sh -c “neutron-db-manage --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugins/ml2/ml2_conf.ini upgrade juno” neutron
INFO [alembic.migration] Context impl MySQLImpl.
INFO [alembic.migration] Will assume non-transactional DDL.
INFO [alembic.migration] Running upgrade None -> havana, havana_initial
…
…
…
完成配置
1、为ML2插件配置文件创建连接文件。
ln -s /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugin.ini
2、初始化数据库
su-s /bin/sh-c “neutron-db-manage --config-file /etc/neutron/neutron.conf–config-file /etc/neutron/plugins/ml2/ml2_conf.ini upgrade juno” neutron
3、重新启动计算服务
systemctl restart openstack-nova-api.service openstack-nova-scheduler.service openstack-nova-conductor.service
4、启动网络服务并配置开机自动启动# systemctlenable neutron-server.service# systemctlstart neutron-server.service
5、验证
[root@controller ~]# source admin-openrc.sh
列出加载的扩展模块，确认成功启动neutron-server进程。
[root@controller ~]# neutron ext-list
±----------------------±----------------------------------------------+
| alias | name |
±----------------------±----------------------------------------------+
| security-group | security-group |
| l3_agent_scheduler | L3 Agent Scheduler |
| ext-gw-mode | Neutron L3 Configurable external gateway mode |
| binding | Port Binding |
| provider | Provider Network |
| agent | agent |
| quotas | Quota management support |
| dhcp_agent_scheduler | DHCP Agent Scheduler |
| l3-ha | HA Router extension |
| multi-provider | Multi Provider Network |
| external-net | Neutron external network |
| router | Neutron L3 Router |
| allowed-address-pairs | Allowed Address Pairs |
| extraroute | Neutron Extra Route |
| extra_dhcp_opt | Neutron Extra DHCP opts |
| dvr | Distributed Virtual Router |
±----------------------±----------------------------------------------+
##### []( )2、配置neutron节点
1、编辑/etc/sysctl.conf文件，包含下列参数：
net.ipv4.ip_forward=1
net.ipv4.conf.all.rp_filter=0
net.ipv4.conf.default.rp_filter=0
[root@network ~]# sysctl -p
net.ipv4.ip_forward = 1
net.ipv4.conf.all.rp_filter = 0
net.ipv4.conf.default.rp_filter = 0
安装网络组件
yum install openstack-neutron openstack-neutron-ml2 openstack-neutron-openvswitch
编辑/etc/neutron/neutron.conf文件并完成下列操作：
a.编辑[database]小节，注释任何connection选项。因为network节点不能直接连接数据库。
b.编辑[DEFAULT]小节，配置RabbitMQ消息队列访问
[DEFAULT]
…
rpc_backend=rabbit
rabbit_host= controller.nice.com
rabbit_password= RABBIT_PASS
c.编辑[DEFAULT]和[keystone_authtoken]小节，配置认证服务访问：
[DEFAULT]
…
auth_strategy= keystone
[keystone_authtoken]
…
auth_uri= http://controller.nice.com:5000/v2.0
identity_uri= http://controller.nice.com:35357admin_tenant_name= service
admin_user= neutron
admin_password= NEUTRON_PASS
d.编辑[DEFAULT]小节，启用Modular Layer2(ML2)插件,路由服务和重叠IP地址功能：
[DEFAULT]
…
core_plugin= ml2
service_plugins= router
allow_overlapping_ips= True
e.（可选）在[DEFAULT]小节中配置详细日志输出。方便排错。
[DEFAULT]
…
verbose = True
ML2插件使用Open vSwitch(OVS)机制为虚拟机实例提供网络框架。编辑/etc/neutron/plugins/ml2/ml2_conf.ini文件并完成下列操作：
a.编辑[ml2]小节，启用flat和generic routing encapsulation (GRE)网络类型驱动，配置GRE租户网络和OVS驱动机制。
[ml2]
…
type_drivers= flat,gre
tenant_network_types= gre
mechanism_drivers= openvswitch
b.编辑[ml2_type_flat]小节，配置外部网络：[ml2_type_flat]
…
flat_networks= external
c.编辑[ml2_type_gre]小节，配置隧道标识范围：
[ml2_type_gre]
…
tunnel_id_ranges= 1:1000
d.编辑[securitygroup]小节，启用安全组，启用ipset并配置OVS防火墙驱动：
[securitygroup]
…
enable_security_group= True
enable_ipset= True
firewall_driver= neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
e.编辑[ovs]小节,配置Open vSwitch(OVS) 代理
[ovs]
…
local_ip= INSTANCE_TUNNELS_INTERFACE_IP_ADDRESS
tunnel_type= gre
enable_tunneling= True
bridge_mappings= external:br-ex
[root@network ~]# systemctl enable openvswitch.service
ln -s ‘/usr/lib/systemd/system/openvswitch.service’ ‘/etc/systemd/system/multi-user.target.wants/openvswitch.service’
[root@network ~]# systemctl start openvswitch.service
[root@network ~]# ovs-vsctl add-br br-ex
[root@network ~]# ovs-vsctl add-port br-ex eno50332184
[root@network ~]# ln -s /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugin.ini
[root@network ~]# cp/usr/lib/systemd/system/neutron-openvswitch-agent.service/usr/lib/systemd/system/neutron-openvswitch-agent.service.orig
-bash: cp/usr/lib/systemd/system/neutron-openvswitch-agent.service/usr/lib/systemd/system/neutron-openvswitch-agent.service.orig: No such file or directory
[root@network ~]# cp /usr/lib/systemd/system/neutron-openvswitch-agent.service /usr/lib/systemd/system/neutron-openvswitch-agent.service.orig
[root@network ~]# sed -i ‘s,plugins/openvswitch/ovs_neutron_plugin.ini,plugin.ini,g’ /usr/lib/systemd/system/neutron-openvswitch-agent.service
[root@network ~]# systemctl enable neutron-openvswitch-agent.service neutron-l3-agent.service neutron-dhcp-agent.service neutron-metadata-agent.service neutron-ovs-cleanup.service
ln -s ‘/usr/lib/systemd/system/neutron-openvswitch-agent.service’ ‘/etc/systemd/system/multi-user.target.wants/neutron-openvswitch-agent.service’
ln -s ‘/usr/lib/systemd/system/neutron-l3-agent.service’ ‘/etc/systemd/system/multi-user.target.wants/neutron-l3-agent.service’
ln -s ‘/usr/lib/systemd/system/neutron-dhcp-agent.service’ ‘/etc/systemd/system/multi-user.target.wants/neutron-dhcp-agent.service’
ln -s ‘/usr/lib/systemd/system/neutron-metadata-agent.service’ ‘/etc/systemd/system/multi-user.target.wants/neutron-metadata-agent.service’
ln -s ‘/usr/lib/systemd/system/neutron-ovs-cleanup.service’ ‘/etc/systemd/system/multi-user.target.wants/neutron-ovs-cleanup.service’
[root@network ~]# systemctl start neutron-openvswitch-agent.service neutron-l3-agent.service neutron-dhcp-agent.service neutron-metadata-agent.service
##### []( )3、配置compute节点
##### []( )4、验证安装
[root@controller ~]# neutron net-create ext-net --shared --router:external True --provider:physical_network external --provider:network_type flat
Created a new network: