我的问题怎么诊断？

compute1 节点也起了，可是在 controller1 上不能ping 通，

对不起，我纯粹是新手

down掉了。在安装的时候，要确保每个组件是正常的。

到computer1上查看下Nova的日志
/var/log/nova

2017-04-16 13:22:39.533 3384 INFO os_vif [-] Loaded VIF plugins: ovs, linux_bridge
2017-04-16 13:22:39.534 3384 WARNING oslo_reports.guru_meditation_report [-] Guru meditation now registers SIGUSR1 and SIGUSR2 by default for backward compatibility. SIGUSR1 will no longer be registered in a future release, so please use SIGUSR2 to generate reports.
2017-04-16 13:22:39.592 3384 WARNING oslo_config.cfg [-] Option "use_neutron" from group "DEFAULT" is deprecated for removal.  Its value may be silently ignored in the future.
2017-04-16 13:22:39.635 3384 INFO nova.virt.driver [req-8c4ab099-fbcb-4bc9-8ef6-5173e48cbcd1 - - - - -] Loading compute driver 'libvirt.LibvirtDriver'
2017-04-16 13:22:39.837 3384 WARNING os_brick.initiator.connectors.remotefs [req-8c4ab099-fbcb-4bc9-8ef6-5173e48cbcd1 - - - - -] Connection details not present. RemoteFsClient may not initialize properly.
2017-04-16 13:22:39.906 3384 WARNING oslo_config.cfg [req-8c4ab099-fbcb-4bc9-8ef6-5173e48cbcd1 - - - - -] Option "force_dhcp_release" from group "DEFAULT" is deprecated for removal.  Its value may be silently ignored in the future.
2017-04-16 13:22:39.913 3384 WARNING oslo_config.cfg [req-8c4ab099-fbcb-4bc9-8ef6-5173e48cbcd1 - - - - -] Option "auth_strategy" from group "DEFAULT" is deprecated. Use option "auth_strategy" from group "api".
2017-04-16 13:22:39.932 3384 INFO nova.service [-] Starting compute node (version 15.0.0-1.el7)
2017-04-16 13:22:39.974 3384 INFO nova.virt.libvirt.driver [-] Connection event '1' reason 'None'
2017-04-16 13:22:39.977 3384 INFO nova.virt.libvirt.host [-] Libvirt host capabilities <capabilities>

  <host>
    <uuid>564dfb62-fc4a-c092-648b-5edc21f31e1e</uuid>
    <cpu>
      <arch>x86_64</arch>
      <model>IvyBridge</model>
      <vendor>Intel</vendor>
      <topology sockets='1' cores='4' threads='1'/>
      <feature name='invtsc'/>
      <feature name='hypervisor'/>
      <feature name='osxsave'/>
      <feature name='pcid'/>
      <feature name='ht'/>
      <feature name='ss'/>
      <feature name='ds'/>
      <pages unit='KiB' size='4'/>
      <pages unit='KiB' size='2048'/>
    </cpu>
    <power_management>
      <suspend_mem/>
      <suspend_disk/>
      <suspend_hybrid/>
    </power_management>
    <migration_features>
"nova-compute.log" 4436L, 1143713C
2017-09-07 16:21:32.028 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 28 seconds. Client port: None
2017-09-07 16:22:03.089 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 30 seconds. Client port: None
2017-09-07 16:22:36.157 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds. Client port: None
2017-09-07 16:23:11.231 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds. Client port: None
2017-09-07 16:23:46.316 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds. Client port: None
2017-09-07 16:24:21.399 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds. Client port: None
2017-09-07 16:24:56.475 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds. Client port: None
2017-09-07 16:25:31.549 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds. Client port: None
2017-09-07 16:26:06.628 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds. Client port: None
2017-09-07 16:26:41.711 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds. Client port: None
2017-09-07 16:27:16.794 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds. Client port: None
2017-09-07 16:27:51.868 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds. Client port: None
2017-09-07 16:28:26.943 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds. Client port: None
2017-09-07 16:29:02.018 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds. Client port: None
2017-09-07 16:29:37.093 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds. Client port: None
2017-09-07 16:30:12.164 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds. Client port: None
2017-09-07 16:30:47.237 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds. Client port: None
2017-09-07 16:31:22.309 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds. Client port: None
2017-09-07 16:31:57.390 1484 ERROR oslo.messaging._drivers.impl_rabbit [req-5dee69bf-b359-4f78-9091-61db4cff5860 - - - - -] [c17f5f7f-887b-45cb-a637-90c438a5dc16] AMQP server on controller1:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds. Client port: None

帮我看下，compute1 上的/var/log/nova/nova-computer.log 贴再上面

问题解决了，我的虚拟机网卡的问题