root@controller:~# neutron net-list
+--------------------------------------+----------+------------------------------------------------------+
| id | name | subnets |
+--------------------------------------+----------+------------------------------------------------------+
| c360ab81-8504-4138-a183-e6a744b096b1 | ext-net1 | 0630d032-9e64-4e64-8fd9-e695e123da4a 115.XXX.XXX.0/24 |
| 83e166bf-74e1-490e-a349-163ef44def6d | net1 | c6835e12-2b58-480a-8d03-0b5242b6e032 192.168.2.0/24 |
| 05fe2655-c9cc-4dec-9b00-aec8d55682f0 | demo-net | 4e87ea4f-9c41-4f50-9671-762b99f4ce45 192.168.0.0/24 |
+--------------------------------------+----------+------------------------------------------------------+
:: Floating IP 2개 생성
root@controller:~# neutron floatingip-create c360ab81-8504-4138-a183-e6a744b096b1
Created a new floatingip:
+---------------------+--------------------------------------+
| Field | Value |
+---------------------+--------------------------------------+
| fixed_ip_address | |
| floating_ip_address | 115.XX.XX.177 |
| floating_network_id | c360ab81-8504-4138-a183-e6a744b096b1 |
| id | d3af842c-0852-4990-91ec-d69e29ff6623 |
| port_id | |
| router_id | |
| status | DOWN |
| tenant_id | 3fdf67182adc4458a36b6dcdc77bce93 |
+---------------------+--------------------------------------+
root@controller:~# neutron floatingip-create c360ab81-8504-4138-a183-e6a744b096b1
Created a new floatingip:
+---------------------+--------------------------------------+
| Field | Value |
+---------------------+--------------------------------------+
| fixed_ip_address | |
| floating_ip_address | 115.XXX.XXX.178 |
| floating_network_id | c360ab81-8504-4138-a183-e6a744b096b1 |
| id | 62556703-ba71-4003-a3dd-c00d52d7df32 |
| port_id | |
| router_id | |
| status | DOWN |
| tenant_id | 3fdf67182adc4458a36b6dcdc77bce93 |
+---------------------+--------------------------------------+
root@controller:~# nova list |grep VM2
| 41a3b9ac-a8b6-47d4-947e-8f87ae80c247 | VM2 | ACTIVE | - | Running | demo-net=192.168.0.130 |
:: Floating 부여
root@controller:~# nova add-floating-ip VM2 115.XXX.XXX.177
root@controller:~# nova add-floating-ip VM2 115.XXX.XXX.178
ERROR (BadRequest): Unable to associate floating ip 115.XXX.XXX.178 to fixed ip 192.168.0.130 for instance 41a3b9ac-a8b6-47d4-947e-8f87ae80c247. Error: Cannot associate floating IP 115.XXX.XXX.178 (62556703-ba71-4003-a3dd-c00d52d7df32) with port 6e0c1ba1-020e-48cc-b68f-c47c4e23c7c5 using fixed IP 192.168.0.130, as that fixed IP already has a floating IP on external network c360ab81-8504-4138-a183-e6a744b096b1. (HTTP 400) (Request-ID: req-c89ceff7-08f1-4fe5-8f20-832a3dc66367)
:: 동일한 Fixed IP에는 2개의 Floating IP를 부여할수가 없기에 Fixed IP 추가
※ nova add-fixed-ip ${INSTANCE_ID} ${NET_ID}
root@controller:~# nova add-fixed-ip VM2 05fe2655-c9cc-4dec-9b00-aec8d55682f0
root@controller:~# nova show VM2 |grep network
| demo-net network | 192.168.0.130, 192.168.0.131, 115.XXX.XXX.177 |
root@controller:~# nova add-floating-ip --fixed-address 192.168.0.131 VM2 115.XXX.XXX.178
root@controller:~# neutron floatingip-list
1개의 디바이스에 2개의 Fixed 아이피를 넣어주었지만 DHCP서버에서는 1개의 아이피만 체크한다.
따라서 인스턴스내에 정적인 설정 필요
[root@vm2 ~]# cp /etc/sysconfig/network-scripts/ifcfg-eth0 /etc/sysconfig/network-scripts/ifcfg-eth0:0
[root@vm2 ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0:0
DEVICE=eth0:0
TYPE=Ethernet
onBOOT=yes
BOOTPROTO=static
IPADDR=192.168.0.130
NETMASK=255.255.255.0
[root@vm2 ~]# /etc/init.d/network restart
[root@vm2 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr FA:16:3E:58:F3:69
inet addr:192.168.0.131 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::f816:3eff:fe58:f369/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1454 Metric:1
RX packets:2297 errors:0 dropped:0 overruns:0 frame:0
TX packets:1380 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:174233 (170.1 KiB) TX bytes:133492 (130.3 KiB)
eth0:0 Link encap:Ethernet HWaddr FA:16:3E:58:F3:69
inet addr:192.168.0.130 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1454 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
※ 주의 : 마지막에 할당된 Fixed 아이피가 dhcp 서버에서 받아옴
삭제
:: 삭제하면 네트워크 floating ip 즉시중단됨
# nova remove-floating-ip <SERVER> <ADDRESS>
# nova remove-fixed-ip <SERVER> <ADDRESS>
