我已经设置了 OpenStack - 这是我第一次安装。我按照安装指南进行操作（在 Ubuntu 14.04 上），我相信一切都正确无误。但是，当我尝试创建实例时，我收到错误：
实例 e948205a-2287-4b0e-9829-f2c6fe3a93eb 的构建已中止：无法建立连接到 http://127.0.0.1:9696/v2.0/extensions.json
我已经断断续续地调试这个问题大约一个星期了，我用尽了在 Google 上找到的以及我能想到的所有解决方案。
Neutron 正在监听端口：
netstat -ln | grep 9696 tcp 0
0 0.0.0.0:9696 0.0.0.0:*
监听
我还可以从命令行连接到 Neutron：
root@controller:/var/log# neutron ext-list
+---------------------------+-----------------------------------------------+
| alias | name |
+---------------------------+-----------------------------------------------+
| default-subnetpools | Default Subnetpools |
| network-ip-availability | Network IP Availability |
| network_availability_zone | Network Availability Zone |
| auto-allocated-topology | Auto Allocated Topology Services |
| ext-gw-mode | Neutron L3 Configurable external gateway mode |
| binding | Port Binding
...
我可以使用令牌进行身份验证，并通过下面的 curl 测试手动从 Neutron 获取响应，这将使用预期数据进行响应。
curl -i -H'X-Auth-Token: MY_TOKEN' http://controller:9696/v2.0/extensions.json
我的中子 API 端点：
| 440735e5dd8d468e89de9a8077ea9491 | RegionOne | 中子 | 网络 | 真实 | 公共 |http://控制器:9696 |
| 5985d944b02b4148a87cafae8df006c8 | RegionOne | 中子 | 网络 | 真实 | 内部 |http://控制器:9696 |
我检查了所有的 Nova 和 Neutron 日志，没有发现任何错误，我重新创建了 Neutron 端点，检查了配置并反复检查。我不知道如何继续调试，也不知道解决方案在哪里。
编辑并更新信息：
root@controller:~# openstack catalog list
+----------+----------+--------------------------------------------------------------------------+
| Name | Type | Endpoints |
+----------+----------+--------------------------------------------------------------------------+
| neutron | network | RegionOne |
| | | admin: http://controller:9696 |
| | | RegionOne |
| | | internal: http://controller:9696 |
| | | RegionOne |
| | | public: http://controller:9696 |
| | | |
| nova | compute | RegionOne |
| | | admin: http://controller:8774/v2.1/225f1282f5034949937f5ef71c503dd0 |
| | | RegionOne |
| | | internal: http://controller:8774/v2.1/225f1282f5034949937f5ef71c503dd0 |
| | | RegionOne |
| | | public: http://controller:8774/v2.1/225f1282f5034949937f5ef71c503dd0 |
| | | |
| keystone | identity | RegionOne |
| | | admin: http://controller:35357/v3 |
| | | RegionOne |
| | | public: http://controller:5000/v3 |
| | | RegionOne |
| | | internal: http://controller:5000/v3 |
| | | |
| glance | image | RegionOne |
| | | admin: http://controller:9292 |
| | | RegionOne |
| | | public: http://controller:9292 |
| | | RegionOne |
| | | internal: http://controller:9292 |
| | | |
+----------+----------+--------------------------------------------------------------------------+
我通过 Horizon 和命令行创建的 Neutron 网络
root@controller:~# neutron net-list
+--------------------------------------+------------------+--------------------------------------------------+
| id | name | subnets |
+--------------------------------------+------------------+--------------------------------------------------+
| 8a50aef6-b687-483d-ab49-f43460eebdd6 | My Admin Network | d4f840cc-31b9-4d32-963d-3a2110ae5765 10.0.0.0/24 |
| 8bb223ef-828d-4c9a-aa16-15ac13d244f6 | ext-net | |
| 98a2606a-3017-48fb-8b60-e18c4a4f1083 | My Network | b76352ac-dc61-4d75-ba7a-b5b4d76705d0 10.0.0.0/24 |
+--------------------------------------+------------------+--------------------------------------------------+
我的 Neutron Ext 列表如下：
root@controller:~# neutron ext-list
+---------------------------+-----------------------------------------------+
| alias | name |
+---------------------------+-----------------------------------------------+
| default-subnetpools | Default Subnetpools |
| network-ip-availability | Network IP Availability |
| network_availability_zone | Network Availability Zone |
| auto-allocated-topology | Auto Allocated Topology Services |
| ext-gw-mode | Neutron L3 Configurable external gateway mode |
| binding | Port Binding |
| agent | agent |
| subnet_allocation | Subnet Allocation |
| l3_agent_scheduler | L3 Agent Scheduler |
| tag | Tag support |
| external-net | Neutron external network |
| net-mtu | Network MTU |
| availability_zone | Availability Zone |
| quotas | Quota management support |
| l3-ha | HA Router extension |
| provider | Provider Network |
| multi-provider | Multi Provider Network |
| address-scope | Address scope |
| extraroute | Neutron Extra Route |
| timestamp_core | Time Stamp Fields addition for core resources |
| router | Neutron L3 Router |
| extra_dhcp_opt | Neutron Extra DHCP opts |
| dns-integration | DNS Integration |
| security-group | security-group |
| dhcp_agent_scheduler | DHCP Agent Scheduler |
| router_availability_zone | Router Availability Zone |
| rbac-policies | RBAC Policies |
| standard-attr-description | standard-attr-description |
| port-security | Port Security |
| allowed-address-pairs | Allowed Address Pairs |
| dvr | Distributed Virtual Router |
+---------------------------+-----------------------------------------------+
使用带有调试的创建命令，我现在在实际错误中获得了一些进一步的信息（最好复制并粘贴出来以便阅读）：
{u'message': u'Build of instance 3e2f5678-6a4a-478b-8953-d10db929d367 aborted: Unable to establish connection to http://127.0.0.1:9696/v2.0/extensions.json', u'code': 500, u'details': u' File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1926, in _do_build_and_run_instance\n filter_properties)\n File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2083, in _build_and_run_instance\n \'create.error\', fault=e)\n File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__\n self.force_reraise()\n File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise\n six.reraise(self.type_, self.value, self.tb)\n File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2067, in _build_and_run_instance\n instance=instance)\n File "/usr/lib/python2.7/contextlib.py", line 35, in __exit__\n self.gen.throw(type, value, traceback)\n File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2244, in _build_resources\n reason=six.text_type(exc))\n', u'created': u'2016-04-29T13:56:55Z'} |
答案1
您可以通过检查中子服务是否启动并运行以及是否在您的服务目录中正确注册来调试这个问题。
看看你的keystone catalog
它将输出 API 端点
keystone catalog
WARNING: unsupported identity-api-version 3, falling back to 2.0
Service: compute
+-------------+-------------------------------------------------------------+
| Property | Value |
+-------------+-------------------------------------------------------------+
| adminURL | http://172.25.60.2:8774/v2/6cbc4e8a49af4fb1be9a4bf6dda8e373 |
| id | 15f3972a815642118f319301c01eac26 |
| internalURL | http://172.25.60.2:8774/v2/6cbc4e8a49af4fb1be9a4bf6dda8e373 |
| publicURL | http://87.x.x.x:8774/v2/6cbc4e8a49af4fb1be9a4bf6dda8e373 |
| region | RegionOne |
+-------------+-------------------------------------------------------------+
Service: network
+-------------+----------------------------------+
| Property | Value |
+-------------+----------------------------------+
| adminURL | http://172.25.60.2:9696/ |
| id | 15c3f13c2bd74cd38bbd48bcafe4ccb0 |
| internalURL | http://172.25.60.2:9696/ |
| publicURL | http://87.x.x.x:9696/ |
| region | RegionOne |
+-------------+----------------------------------+
Service: volumev2
+-------------+-------------------------------------------------------------+
| Property | Value |
+-------------+-------------------------------------------------------------+
| adminURL | http://172.25.60.2:8776/v2/6cbc4e8a49af4fb1be9a4bf6dda8e373 |
| id | 979fd7e2bb7a4fef82b9e975249decf5 |
| internalURL | http://172.25.60.2:8776/v2/6cbc4e8a49af4fb1be9a4bf6dda8e373 |
| publicURL | http://87.x.x.x.:8776/v2/6cbc4e8a49af4fb1be9a4bf6dda8e373 |
| region | RegionOne |
+-------------+-------------------------------------------------------------+
neutron net-list那么该命令的输出是什么
neutron net-list
+--------------------------------------+----------------------+-------------------------------------------------------+
| id | name | subnets |
+--------------------------------------+----------------------+-------------------------------------------------------+
| 2f97b5e6-e13b-47af-9cb7-f7e33344a788 | default | f25c7778-33f9-48a7-9696-a19a01fc3e57 192.168.112.0/24 |
| 34263fbb-f93e-45d3-b65e-ab2afce3c1c9 | ruby-network | 9360aeb5-2c05-431d-8e79-7052788db198 10.0.14.0/24 |
| 3650dbcb-b6d7-4220-8e6d-fa7c30914c57 | cloudfoundry-network | 24ed907f-476f-4440-97d4-9a1f2b7bd75d 10.0.26.0/24 |
在您的 neutron.conf 中，您是否绑定到 127.0.0.1 ？ - 您应该绑定到所有 IP
# Address to bind the API server to
# bind_host = 0.0.0.0
bind_host = 0.0.0.0
# Port the bind the API server to
# bind_port = 9696
bind_port = 9696
Neutron 使用 api 扩展或“插件”以及 DHCP、安全组和 NAT 的代理 - 您能继续说一下您正在使用什么扩展吗？
这可能是 openvswitch，因为您的插件和网络代理默认通常是 dnsmaq 和 iptables。
您可以在 /etc/ini.d/ 中检查 openvswitch 服务，并使用以下 show 命令查看交换机数据库
ovs-vsctl show : Prints a brief overview of the switch database configuration.
ovs-vsctl list-br : Prints a list of configured bridges
ovs-vsctl list-ports <bridge> : Prints a list of ports on a specific bridge.
ovs-vsctl list interface : Prints a list of interfaces.
此外，为了调试扩展 http 错误，您可以在 neutron conf 中启用调试日志记录，或者在 cli 上传入 --debug 选项，例如
nova --debug boot --image imageID --flavor flavorID --nic net-id=nicID