我使用了带有 MAAS 的横向安装程序。当我通过 SSH 进入 Neutron 节点时，我可以 ping 出互联网，但实例却不能。
ubuntu@nvcg:~$ ping google.com
PING google.com (216.58.223.14) 56(84) bytes of data.
From 10.10.0.1 icmp_seq=1 Destination Net Unreachable
From 10.10.0.1 icmp_seq=2 Destination Net Unreachable
From 10.10.0.1 icmp_seq=3 Destination Net Unreachable
实例中的 /etc/network/interfaces：
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
iface lo inet loopback
# Source interfaces
# Please check /etc/network/interfaces.d before changing this file
# as interfaces may have been defined in /etc/network/interfaces.d
# NOTE: the primary ethernet device is defined in
# /etc/network/interfaces.d/eth0
# See LP: #1262951
source /etc/network/interfaces.d/*.cfg
/etc/network/interfaces.d/eth0.cfg in Instance:
# The primary network interface
auto eth0
iface eth0 inet dhcp
Neutron 节点上的 IP 路由显示默认网关是通过我的 MAAS 控制器节点：
ubuntu@blue-drop:~$ ip route
default via 10.1.1.100 dev juju-br0
10.0.3.0/24 dev lxcbr0 proto kernel scope link src 10.0.3.1
10.1.1.0/24 dev juju-br0 proto kernel scope link src 10.1.1.152
来自景观 LXC 的 juju 状态中子：
landscape@juju-machine-0-lxc-1:~$ juju status neutron-gateway
environment: "1"
machines:
"0":
agent-state: started
agent-version: 1.25.6
dns-name: blue-drop.maas
instance-id: /MAAS/api/1.0/nodes/node-b76c3dca-5a50-11e6-8378-0cc47a2275d4/
series: trusty
hardware: arch=amd64 cpu-cores=24 mem=131072M tags=node-b76c3dca-5a50-11e6-8378-0cc47a2275d4
availability-zone=default
state-server-member-status: has-vote
services:
landscape-client:
charm: cs:trusty/landscape-client-14
exposed: false
service-status: {}
relations:
ceph-client:
- ceph-mon
container:
- base-machine
- ceilometer
- ceph-mon
- ceph-osd
- ceph-radosgw
- cinder
- glance
- glance-simplestreams-sync
- keystone
- mongodb
- mysql
- neutron-api
- neutron-gateway
- nova-cloud-controller
- nova-compute-kvm
- ntpmaster
- openstack-dashboard
- rabbitmq-server
subordinate-to:
- base-machine
- ceilometer
- ceph-mon
- ceph-osd
- ceph-radosgw
- cinder
- glance
- glance-simplestreams-sync
- keystone
- mongodb
- mysql
- neutron-api
- neutron-gateway
- nova-cloud-controller
- nova-compute-kvm
- ntpmaster
- openstack-dashboard
- rabbitmq-server
neutron-gateway:
charm: cs:trusty/neutron-gateway-229
can-upgrade-to: cs:trusty/neutron-gateway-230
exposed: false
service-status:
current: active
message: Unit is ready
since: 21 Sep 2016 07:36:41Z
relations:
amqp:
- rabbitmq-server
cluster:
- neutron-gateway
juju-info:
- landscape-client
neutron-plugin-api:
- neutron-api
quantum-network-service:
- nova-cloud-controller
units:
neutron-gateway/0:
workload-status:
current: active
message: Unit is ready
since: 21 Sep 2016 07:36:41Z
agent-status:
current: idle
since: 21 Sep 2016 07:36:43Z
version: 1.25.6
agent-state: started
agent-version: 1.25.6
machine: "0"
public-address: blue-drop.maas
subordinates:
landscape-client/3:
workload-status:
current: active
message: System successfully registered
since: 20 Sep 2016 07:25:58Z
agent-status:
current: idle
since: 21 Sep 2016 07:36:45Z
version: 1.25.6
agent-state: started
agent-version: 1.25.6
upgrading-from: cs:trusty/landscape-client-14
public-address: blue-drop.maas
networks:
subnet-1:
provider-id: subnet-1
cidr: 172.26.0.0/22
subnet-2:
provider-id: subnet-2
cidr: 10.1.1.0/24
subnet-3:
provider-id: subnet-3
cidr: 192.168.122.0/24
中子节点上的 ifconfig：
ubuntu@blue-drop:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 0c:c4:7a:22:89:9c
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4940677 errors:0 dropped:0 overruns:0 frame:0
TX packets:5279006 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1477383852 (1.4 GB) TX bytes:2890096642 (2.8 GB)
Memory:c7120000-c7140000
eth1 Link encap:Ethernet HWaddr 0c:c4:7a:22:89:9d
inet6 addr: fe80::ec4:7aff:fe22:899d/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:56379 errors:0 dropped:0 overruns:0 frame:0
TX packets:372 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:5587444 (5.5 MB) TX bytes:45875 (45.8 KB)
Memory:c7100000-c7120000
juju-br0 Link encap:Ethernet HWaddr 0c:c4:7a:22:89:9c
inet addr:10.1.1.152 Bcast:10.1.1.255 Mask:255.255.255.0
inet6 addr: fe80::ec4:7aff:fe22:899c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1739573 errors:0 dropped:0 overruns:0 frame:0
TX packets:1605712 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:550485072 (550.4 MB) TX bytes:1694052911 (1.6 GB)
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:11853058 errors:0 dropped:0 overruns:0 frame:0
TX packets:11853058 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:6184581194 (6.1 GB) TX bytes:6184581194 (6.1 GB)
lxcbr0 Link encap:Ethernet HWaddr 16:3e:90:08:e6:6e
inet addr:10.0.3.1 Bcast:10.0.3.255 Mask:255.255.255.0
inet6 addr: fe80::143e:90ff:fe08:e66e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:648 (648.0 B)
tap17f944be-8c Link encap:Ethernet HWaddr 06:15:a8:c7:72:43
UP BROADCAST RUNNING MULTICAST MTU:1458 Metric:1
RX packets:8 errors:0 dropped:0 overruns:0 frame:0
TX packets:3 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:648 (648.0 B) TX bytes:262 (262.0 B)
tap2a05341c-57 Link encap:Ethernet HWaddr da:ad:d8:d0:d5:32
UP BROADCAST RUNNING MULTICAST MTU:1458 Metric:1
RX packets:485 errors:0 dropped:0 overruns:0 frame:0
TX packets:568 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:61839 (61.8 KB) TX bytes:65210 (65.2 KB)
tap9799d51d-3f Link encap:Ethernet HWaddr ba:ee:51:bb:19:51
UP BROADCAST RUNNING MULTICAST MTU:1458 Metric:1
RX packets:10 errors:0 dropped:0 overruns:0 frame:0
TX packets:2 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:864 (864.0 B) TX bytes:140 (140.0 B)
tapaf2b94ee-1b Link encap:Ethernet HWaddr 1a:f7:3c:a1:57:a7
UP BROADCAST RUNNING MULTICAST MTU:1458 Metric:1
RX packets:335 errors:0 dropped:0 overruns:0 frame:0
TX packets:53150 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:43105 (43.1 KB) TX bytes:5254767 (5.2 MB)
tapf4edb36f-89 Link encap:Ethernet HWaddr 26:18:93:ef:8a:4c
UP BROADCAST RUNNING MULTICAST MTU:1458 Metric:1
RX packets:13 errors:0 dropped:0 overruns:0 frame:0
TX packets:47 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1874 (1.8 KB) TX bytes:7328 (7.3 KB)
tapf97a3cfd-7f Link encap:Ethernet HWaddr 16:62:97:43:da:26
UP BROADCAST RUNNING MULTICAST MTU:1458 Metric:1
RX packets:21 errors:0 dropped:0 overruns:0 frame:0
TX packets:52862 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1474 (1.4 KB) TX bytes:5219352 (5.2 MB)
veth9GOBB0 Link encap:Ethernet HWaddr fe:08:5b:e8:1e:2b
inet6 addr: fe80::fc08:5bff:fee8:1e2b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:469961 errors:0 dropped:0 overruns:0 frame:0
TX packets:562703 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:95499097 (95.4 MB) TX bytes:179705526 (179.7 MB)
vethQELJ2E Link encap:Ethernet HWaddr fe:59:b7:41:18:3a
inet6 addr: fe80::fc59:b7ff:fe41:183a/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2349669 errors:0 dropped:0 overruns:0 frame:0
TX packets:2490007 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1100476551 (1.1 GB) TX bytes:747480935 (747.4 MB)
Neutron Node 的 /etc/network/interfaces：
auto lo
iface lo inet loopback
dns-nameservers 10.1.1.100
dns-search maas
iface eth0 inet manual
auto juju-br0
iface juju-br0 inet static
gateway 10.1.1.100
address 10.1.1.152/24
mtu 1500
bridge_ports eth0
auto eth1
iface eth1 inet manual
mtu 1500
source /etc/network/interfaces.d/*.cfg
答案1
在安装的 OVS 配置步骤中发现这是网关和 CIDR 配置错误。
网络设置为 172.26.0.0/24，但实际应为 172.26.1.0/22，因此与现有网络发生冲突。
获取管理员凭据并进行子网更新，还注意到未设置外部网络子网的网关。设置后，实例即可获得网络连接。