1.修改/etc/neutron/neutron.conf配置
[root@linux-node1 ~]# vim /etc/neutron/neutron.conf
[defalut]
...
core_plugin = ml2
service_plugins = router <==之前是等于空，开启路由插件
allow_overlapping_ips = Ture <==允许重叠ip [root@linux-node1 ~]# vim /etc/neutron/plugins/ml2/ml2_conf.ini <==启用vxlan[ml2]
type_drivers = flat,vlan,vxlan <==驱动类型
tenant_network_types = vxlan <==租户网络类型为vxlan
mechanism_drivers = linuxbridge,l2population <==启用linuxbridge ml2机制
[ml2_type_vxlan]
vni_ranges=: <==为私有网络配置Vxlan网络识别范围 配置linuxbridge代理
[root@linux-node1 ~]# vim /etc/neutron/plugins/ml2/linuxbridge_agent.ini
[vxlan]
enable_vxlan = True
local_ip = 192.168.56.11
l2_population = True 配置layer-3代理(网络层)做路由
[root@linux-node1 ~]# vim /etc/neutron/l3_agent.ini 在``[DEFAULT]``部分，配置Linuxbridge接口驱动和外部网络网桥： interface_driver = neutron.agent.linux.interface.BridgeInterfaceDriver OVS(open vswitch)==>用于公有云 linuxbridge==>私有云
2.安装配置计算节点
vim /etc/neutron/plugins/ml2/linuxbridge_agent.ini
[vxlan]
enable_vxlan = True
local_ip = 192.168.56.12
l2_population = True
3.重启服务
[root@linux-node1 ~]# systemctl restart neutron-server neutron-linuxbridge-agent neutron-l3-agent
[root@linux-node2 ~]# systemctl restart neutron-linuxbridge-agent
4.创建自服务网络
①获取demo凭证
[root@linux-node1 ~]# source demo-openstack ②创建自服务网络
[root@linux-node1 ~]# openstack network create selfservice
+-------------------------+--------------------------------------+
| Field | Value |
+-------------------------+--------------------------------------+
| admin_state_up | UP |
| availability_zone_hints | |
| availability_zones | |
| created_at | --14T02::57Z |
| description | |
| headers | |
| id | 24bfcb74-238b--bd4c- |
| ipv4_address_scope | None |
| ipv6_address_scope | None |
| mtu | |
| name | selfservice |
| port_security_enabled | True |
| project_id | 02aaf7ba97114238b1d8169fedabb9be |
| project_id | 02aaf7ba97114238b1d8169fedabb9be |
| revision_number | |
| router:external | Internal |
| shared | False |
| status | ACTIVE |
| subnets | |
| tags | [] |
| updated_at | --14T02::57Z |
+-------------------------+--------------------------------------+
③创建子网
[root@linux-node1 ~]# openstack subnet create --network selfservice \
> --dns-nameserver 192.168.56.2 --gateway 172.16.1.1 \
> --subnet-range 172.16.1.0/ selfservice-subnet
+-------------------+--------------------------------------+
| Field | Value |
+-------------------+--------------------------------------+
| allocation_pools | 172.16.1.2-172.16.1.254 |
| cidr | 172.16.1.0/ |
| created_at | --14T02::34Z |
| description | |
| dns_nameservers | 192.168.56.2 |
| enable_dhcp | True |
| gateway_ip | 172.16.1.1 |
| headers | |
| host_routes | |
| id | 01941fd0-4cfa-44a6-8a09-df56a5e4314b |
| ip_version | |
| ipv6_address_mode | None |
| ipv6_ra_mode | None |
| name | selfservice-subnet |
| network_id | 24bfcb74-238b--bd4c- |
| project_id | 02aaf7ba97114238b1d8169fedabb9be |
| project_id | 02aaf7ba97114238b1d8169fedabb9be |
| revision_number | |
| service_types | [] |
| subnetpool_id | None |
| updated_at | --14T02::34Z |
+-------------------+--------------------------------------+
5.创建路由器
①获取admin凭证
[root@linux-node1 ~]# source admin-openstack ②更新public的网络
[root@linux-node1 ~]# neutron net-update public --router:external
Updated network: public ③获取demo凭证
[root@linux-node1 ~]# source demo-openstack ④创建路由
[root@linux-node1 ~]# openstack router create router
+-------------------------+--------------------------------------+
| Field | Value |
+-------------------------+--------------------------------------+
| admin_state_up | UP |
| availability_zone_hints | |
| availability_zones | |
| created_at | --14T02::26Z |
| description | |
| external_gateway_info | null |
| flavor_id | None |
| headers | |
| id | 1a189a9c-c8e3--a51b-ae408dcbd830 |
| name | router |
| project_id | 02aaf7ba97114238b1d8169fedabb9be |
| project_id | 02aaf7ba97114238b1d8169fedabb9be |
| revision_number | |
| routes | |
| status | ACTIVE |
| updated_at | --14T02::26Z |
+-------------------------+--------------------------------------+ ⑤给路由器添加一个私网子网的接口
[root@linux-node1 ~]# neutron router-interface-add router selfservice-subnet
Added interface 5c3b3398-ccf0--bed5-0580f99f2cc0 to router router. ⑥给路由器设置公共网络网关
[root@linux-node1 ~]# neutron router-gateway-set router public
Set gateway for router router ⑦打开neutron网络，并重启httpd服务 [root@linux-node1 ~]# vim /etc/openstack-dashboard/local-setting OPENSTACK_NEUTRON_NETWORK = {
'enable_router': True,
'enable_quotas': True,
'enable_ipv6': True,
'enable_distributed_router': True,
'enable_ha_router': True,
'enable_lb': True,
'enable_firewall': True,
'enable_***': True,
'enable_fip_topology_check': True, [root@linux-node2 ~]# systemctl restart httpd
6.登录dashboard查看自服务网络：
7.创建自服务网络的云主机：
网络选项：选择selfservice-subnet
此时，创建的云主机的ip：172.16.1.9是无法通过外网进行访问的，需要对其增加一个浮动ip，相当于一个外网ip的映射，通过路由器进行连接，如图：
浮动ip绑定："计算"-->"访问安全"-->"浮动ip"-->"分配给项目" 创建完毕后 "关联"到自服务网络的项目
查看网络拓扑结构：云主机连接自服务网络（selfservice），再连接路由器，路由器连接到公有网络
直接ping云主机内部ip：172.16.1.9是无法ping通的
[root@linux-node1 ~]# ping 172.16.1.9
PING 172.16.1.9 (172.16.1.9) () bytes of data.
^C
--- 172.16.1.9 ping statistics ---
packets transmitted, received, % packet loss, time 3010ms
增加浮动ip后，可以ping通，并且可以通过ssh远程登录
[root@linux-node1 ~]# ping 192.168.56.111
PING 192.168.56.111 (192.168.56.111) () bytes of data.
bytes from 192.168.56.111: icmp_seq= ttl= time=1.19 ms
bytes from 192.168.56.111: icmp_seq= ttl= time=1.26 ms
^C
--- 192.168.56.111 ping statistics ---
packets transmitted, received, % packet loss, time 1001ms
rtt min/avg/max/mdev = 1.199/1.234/1.269/0.035 ms
[root@linux-node1 ~]# ssh cirros@192.168.56.111
The authenticity of host '192.168.56.111 (192.168.56.111)' can't be established.
RSA key fingerprint is SHA256:JGnicOkiSuFIvu5hea2od5L3CsPJwDbBxdqRjQ7zqaw.
RSA key fingerprint is MD5:b8:b8::f3::e5:a9:af::ab:b7:3a::d6:0c:7e.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.56.111' (RSA) to the list of known hosts.
$ ifconfig
eth0 Link encap:Ethernet HWaddr FA::3E::6B:
inet addr:172.16.1.9 Bcast:172.16.1.255 Mask:255.255.255.0
inet6 addr: fe80::f816:3eff:fe37:6b72/ Scope:Link
UP BROADCAST RUNNING MULTICAST MTU: Metric:
RX packets: errors: dropped: overruns: frame:
TX packets: errors: dropped: overruns: carrier:
collisions: txqueuelen:
RX bytes: (16.8 KiB) TX bytes: (17.0 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::/ Scope:Host
UP LOOPBACK RUNNING MTU: Metric:
RX packets: errors: dropped: overruns: frame:
TX packets: errors: dropped: overruns: carrier:
collisions: txqueuelen:
RX bytes: (0.0 B) TX bytes: (0.0 B)