OpenStack-12-增加flat网段
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参考技术A 使用OpenStack虚机启动的网卡是临时的,虚拟机重启就失效了,虚拟机挂起也会失效,网卡重启也会失效测试环境: 分别在三台机器上增加一个网卡，选择lan网段，地址172.16.0.0/24
（一）增加一个flat网络原因
（二）添加网卡eth1
控制节点:
计算节点1:
计算节点2:
互相进行ping测试,测试连通性
（三）控制节点配置
1:控制节点
a:
b:
c：重启
systemctl restart neutron-server.service neutron-linuxbridge-agent.service
（四）计算节点配置
a:
b：重启
（五）创建网络
1、命令行创建：
neutron net-create --shared --provider:physical_network net172_16_0
--provider:network_type flat jiage
neutron subnet-create --name jiage
--allocation-pool start=172.16.0.1,end=172.16.0.250
--dns-nameserver 223.5.5.5 --gateway 172.16.0.254
jiage 172.16.0.0/24
查看创建的网络和子网详情
2、web页面创建网络：
管理员-网络-创建网络（供应商:平面）
创建子网
创建实例测试网络是否可用：项目-实例-创建实例（创建过程中可以选择刚创建的网络）
目前网络内网是通的,但是外网不通.因为指定的网关真实并不存在
需要创建一个linux系统作为路由器使用：
openstack--neutron--flat
控制节点的配置项： #使用core plugin使用ml2 [[email protected] ~]# grep ‘^[a-z]‘ /etc/neutron/neutron.conf auth_strategy = keystone core_plugin = ml2 service_plugins = #ml2加载指定网络类型 #加载指定的plugin-agent：Linuxbridge [[email protected] ~]# grep ‘^[a-z]‘ /etc/neutron/plugins/ml2/ml2_conf.ini type_drivers = local,flat,vlan,gre,vxlan,geneve tenant_network_types = flat mechanism_drivers = linuxbridge,openvswitch extension_drivers = port_security flat_networks = public enable_ipset = true #在哪个网口实现映射 [[email protected] ~]# grep ‘^[a-z]‘ /etc/neutron/plugins/ml2/linuxbridge_agent.ini physical_interface_mappings = public:ens33 firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver enable_security_group = true enable_vxlan = false #创建Network [[email protected] ~]# neutron net-create --shared --provider:physical_network public --provider:network_type flat flat_net_provider Created a new network: +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | True | | availability_zone_hints | | | availability_zones | | | created_at | 2017-08-08T09:23:25 | | description | | | id | 43ad5825-5b55-4c1c-9fc4-a8c6e2ae129c | | ipv4_address_scope | | | ipv6_address_scope | | | mtu | 1500 | | name | flat_net_provider | | port_security_enabled | True | | provider:network_type | flat | | provider:physical_network | public | | provider:segmentation_id | | | router:external | False | | shared | True | | status | ACTIVE | | subnets | | | tags | | | tenant_id | 3e83baa0b3d64188b036ce423002aac7 | | updated_at | 2017-08-08T09:23:27 | +---------------------------+--------------------------------------+ [[email protected] ~]# neutron subnet-create --name flat_subnet_provider --allocation-pool start=192.168.142.200,end=192.168.142.230 --gateway 192.168.142.2 flat_net_provider 192.168.142.0/24 Created a new subnet: +-------------------+--------------------------------------------------------+ | Field | Value | +-------------------+--------------------------------------------------------+ | allocation_pools | {"start": "192.168.142.200", "end": "192.168.142.230"} | | cidr | 192.168.142.0/24 | | created_at | 2017-08-08T09:30:05 | | description | | | dns_nameservers | | | enable_dhcp | True | | gateway_ip | 192.168.142.2 | | host_routes | | | id | dc748e16-472f-44b4-98da-629af8e9ce8d | | ip_version | 4 | | ipv6_address_mode | | | ipv6_ra_mode | | | name | flat_subnet_provider | | network_id | 43ad5825-5b55-4c1c-9fc4-a8c6e2ae129c | | subnetpool_id | | | tenant_id | 3e83baa0b3d64188b036ce423002aac7 | | updated_at | 2017-08-08T09:30:05 | +-------------------+--------------------------------------------------------+ #底层网络变化 [[email protected] ~]# brctl show bridge name bridge id STP enabled interfaces brq43ad5825-5b 8000.000c298c71a6 no ens33 tapb8945f76-d5 #创建主机 [[email protected] ~]# openstack server create --flavor m1.nano --image cirros --nic net-id=43ad5825-5b55-4c1c-9fc4-a8c6e2ae129c --security-group default --key-name my-key instance-of-flat-0809-01 +--------------------------------------+-----------------------------------------------+ | Field | Value | +--------------------------------------+-----------------------------------------------+ | OS-DCF:diskConfig | MANUAL | | OS-EXT-AZ:availability_zone | | | OS-EXT-SRV-ATTR:host | None | | OS-EXT-SRV-ATTR:hypervisor_hostname | None | | OS-EXT-SRV-ATTR:instance_name | instance-00000015 | | OS-EXT-STS:power_state | 0 | | OS-EXT-STS:task_state | scheduling | | OS-EXT-STS:vm_state | building | | OS-SRV-USG:launched_at | None | | OS-SRV-USG:terminated_at | None | | accessIPv4 | | | accessIPv6 | | | addresses | | | adminPass | 3y7ZpxJNjQ8q | | config_drive | | | created | 2017-08-09T03:01:26Z | | flavor | m1.nano (0) | | hostId | | | id | 0010799f-ee85-4259-bcda-f5eec2cb2e12 | | image | cirros (af67976a-92ea-4d08-8296-86cb76e3954b) | | key_name | my-key | | name | instance-of-flat-0809-01 | | os-extended-volumes:volumes_attached | [] | | progress | 0 | | project_id | 3e83baa0b3d64188b036ce423002aac7 | | properties | | | security_groups | [{u‘name‘: u‘default‘}] | | status | BUILD | | updated | 2017-08-09T03:01:28Z | | user_id | 2614b525036b47e6a9a5b51ff385a06d | +--------------------------------------+-----------------------------------------------+ [[email protected] ~]# openstack server list +--------------------------------------+--------------------------+---------+-----------------------------------+ | ID | Name | Status | Networks | +--------------------------------------+--------------------------+---------+-----------------------------------+ | 0010799f-ee85-4259-bcda-f5eec2cb2e12 | instance-of-flat-0809-01 | ACTIVE | flat_net_provider=192.168.142.202 | | 7226e76d-85c0-439f-9599-36d986dfe831 | instance-of-flat-01 | ERROR | | | 2a657897-4fa5-4d8b-ab22-c508110a061e | instance-test-local-03 | SHUTOFF | second_local_net=172.16.1.102 | | fb206d8d-453c-4b14-8945-f7c8526c7747 | instance-test-local-02 | SHUTOFF | first_local_net=172.16.1.13 | | 617c6ead-d85d-45cf-9d40-1354eaf758d5 | instance-test-local-01 | SHUTOFF | first_local_net=172.16.1.12 | +--------------------------------------+--------------------------+---------+-----------------------------------+ [[email protected] ~]# ping 192.168.142.202 PING 192.168.142.202 (192.168.142.202) 56(84) bytes of data. 64 bytes from 192.168.142.202: icmp_seq=1 ttl=64 time=10.7 ms 64 bytes from 192.168.142.202: icmp_seq=2 ttl=64 time=4.78 ms ^C --- 192.168.142.202 ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1001ms rtt min/avg/max/mdev = 4.788/7.763/10.739/2.976 ms [[email protected] ~]# ssh [email protected] [email protected]‘s password: $ ifconfig eth0 Link encap:Ethernet HWaddr FA:16:3E:AF:0D:64 inet addr:192.168.142.202 Bcast:192.168.142.255 Mask:255.255.255.0 inet6 addr: fe80::f816:3eff:feaf:d64/64 Scope:Link ...... #主机查看实例 [[email protected] ~]# virsh list Id 名称 状态 ---------------------------------------------------- 1 instance-00000015 running #查看虚拟机的网卡信息 [[email protected] ~]# virsh domiflist instance-00000015 接口 类型 源 型号 MAC ------------------------------------------------------- tapd618b2cd-e7 bridge brq43ad5825-5b virtio fa:16:3e:af:0d:64 [[email protected] ~]# brctl show bridge name bridge id STP enabled interfaces brq43ad5825-5b 8000.000c298c71a6 no ens33 tapb8945f76-d5 #dhcp的网卡接口 tapd618b2cd-e7 #实例的网卡接口 #停止控制节点的nova-computer服务，新建一个实例创建在计算节点192.168.142.167的上 # 192.168.142.202连接 192.168.142.204，OK可以通信 $ ifconfig eth0 Link encap:Ethernet HWaddr FA:16:3E:AF:0D:64 inet addr:192.168.142.202 Bcast:192.168.142.255 Mask:255.255.255.0 $ ping 192.168.142.204 PING 192.168.142.204 (192.168.142.204): 56 data bytes 64 bytes from 192.168.142.204: seq=0 ttl=64 time=15.811 ms
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