openstack-train dhcpagent报错

最新推荐文章于 2024-08-12 15:53:23 发布

idc_lm

最新推荐文章于 2024-08-12 15:53:23 发布

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文章标签： openstack

本文链接：https://blog.youkuaiyun.com/idc_lm/article/details/105346817

版权

本文记录了OpenStack Neutron DHCP Agent在运行过程中出现的报错情况，包括错误日志分析、配置文件对比及调整、网络参数检查等过程，最终定位问题为MTU设置不当导致的数据包超长问题。

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服务已经起来了，居然报错！！！

server.log报错

dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent [req-948f2788-767e-4ead-99b8-f16a93023abd - - - - -] Failed reporting state!: MessagingTimeout: Timed out waiting for a reply to message ID 1e52712ed9374ff5bedf4e746d4cbf57
hcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent Traceback (most recent call last):
dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent File "/usr/lib/python2.7/site-packages/neutron/agent/dhcp/agent.py", line 962, in _report_state
dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent ctx, self.agent_state, True)
dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent File "/usr/lib/python2.7/site-packages/neutron/agent/rpc.py", line 101, in report_state
dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent return method(context, 'report_state', **kwargs)
dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/client.py", line 181, in call
dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent transport_options=self.transport_options)
dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent File "/usr/lib/python2.7/site-packages/oslo_messaging/transport.py", line 129, in _send
dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent transport_options=transport_options)
dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 646, in send
dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent transport_options=transport_options)
dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 634, in _send
dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent call_monitor_timeout)
dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 523, in wait
dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent message = self.waiters.get(msg_id, timeout=timeout)
dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 401, in get
dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent 'to message ID %s' % msg_id)
dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent MessagingTimeout: Timed out waiting for a reply to message ID 1e52712ed9374ff5bedf4e746d4cbf57
dhcp-agent.log:2020-04-06 16:58:51.643 31650 ERROR neutron.agent.dhcp.agent
dhcp-agent.log:2020-04-06 16:58:51.645 31650 WARNING oslo.service.loopingcall [req-948f2788-767e-4ead-99b8-f16a93023abd - - - - -] Function 'neutron.agent.dhcp.agent.DhcpAgentWithStateReport._report_state' run outlasted interval by 30.01 sec
首先查看配置文件有问题

我的配置

[DEFAULT]

interface_driver = linuxbridge
dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq
enable_isolated_metadata = true

查看openstack官网的配置

[DEFAULT]
...
interface_driver = neutron.agent.linux.interface.BridgeInterfaceDriver
dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq
enable_isolated_metadata = True

。。。果然有区别，但这个是2017年的！

这个是新的，没啥区别。地址如下：

https://docs.openstack.org/neutron/train/install/controller-install-option1-rdo.html

网上查到有人更改了时延解决了问题。从第一行看，我也有这个问题。先更改时延试试。在/etc/neutron/neutron.conf中配置添加

[DEFAULT]

rpc_response_timeout = 200

PS:4分钟后一样报错，不行啊！服务还挂了两个，还不如不改。

more dhcp.agent.log发现

Successfully reported state after a previous failure.
2020-04-06 22:06:06.862 56481 ERROR neutron.agent.dhcp.agent [req-fc722885-7a02-4f6e-ab2b-d3a49b910833 - - - - -]
Unable to sync network state.: MessagingTimeout: Timed out waiting for a reply to message ID a679bb510525498e854
6cfd04eedc437

.........

2020-04-06 22:06:07.426 56481 INFO neutron.agent.dhcp.agent [req-f4ac54cb-9d33-4601-a964-afce13bd28a8 - - - - -]
All active networks have been fetched through RPC.
2020-04-06 22:06:07.427 56481 INFO neutron.agent.dhcp.agent [req-f4ac54cb-9d33-4601-a964-afce13bd28a8 - - - - -]
Synchronizing state complete

这一会接得着一会接不着的有点意思。时间还很接近。会不会是连接数的问题？或者说发起的请求太多了呢？不懂代码，太难了。

使用wireshark，看看包的情况。

shark到几个这样的包，103是我的节点，99是控制端。shark5672

查来查去发现length1514和之后的包必报错。

ifconfig 发现MTU是1500，my god。我在玩蛇。。。。。。