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[Openstack] VMs cannot fetch metadata


https://bugs.launchpad.net/neutron/+bug/1777640

Best,
-jay

On 11/06/2018 08:21 AM, Terry Lundin wrote:
> Hi all,
> 
> I've been struggling with instances suddenly not being able to fetch 
> metadata from Openstack Queens (this has worked fine earlier).
> 
> Newly created VMs fail to connect to the magic ip, eg. 
> http://169.254.169.254/, and won't initialize properly. Subsequently ssh 
> login will fail since no key is uploaded.
> 
> The symptom is failed requests in the log
> 
> *Cirros:*
> Starting network...
> udhcpc (v1.20.1) started
> Sending discover...
> Sending select for 10.0.0.18...
> Lease of 10.0.0.18 obtained, lease time 86400
> route: SIOCADDRT: File exists
> WARN: failed: route add -net "0.0.0.0/0" gw "10.0.0.1"
> cirros-ds 'net' up at 0.94
> checkinghttp://169.254.169.254/2009-04-04/instance-id
> failed 1/20: up 0.94. request failed
> failed 2/20: up 3.01. request failed
> failed 3/20: up 5.03. request failed
> failed 4/20: up 7.04. request failed
> 
> *..and on Centos6:*
> ci-info: | Route |   Destination   | Gateway  |     Genmask     | Interface | Flags |
> ci-info: +-------+-----------------+----------+-----------------+-----------+-------+
> ci-info: |   0   | 169.254.169.254 | 10.0.0.1 | 255.255.255.255 |    eth0   |  UGH  |
> ci-info: |   1   |     10.0.0.0    | 0.0.0.0  |  255.255.255.0  |    eth0   |   U   |
> ci-info: |   2   |     0.0.0.0     | 10.0.0.1 |     0.0.0.0     |    eth0   |   UG  |
> ci-info: +-------+-----------------+----------+-----------------+-----------+-------+
> 2018-11-06 08:10:07,892 - url_helper.py[WARNING]: Calling 'http://169.254.169.254/2009-04-04/meta-data/instance-id' failed [0/120s]: unexpected error ['NoneType' object has no attribute 'status_code']
> 2018-11-06 08:10:08,906 - url_helper.py[WARNING]: Calling 'http://169.254.169.254/2009-04-04/meta-data/instance-id' failed [1/120s]: unexpected error ['NoneType' object has no attribute 'status_code']
> 2018-11-06 08:10:09,925 - url_helper.py[WARNING]: Calling 'http://169.254.169.254/2009-04-04/meta-data/instance-id' failed [2/120s]: unexpected error ['NoneType' object has no attribute
> ...
> 
> Using Curl manually, eg. '/curl http://169.254.169.254/openstack/' one 
> gets:
> 
> /curl: (52) Empty reply from server/
> 
> *At the same time this error is showing up in the syslog on the controller:*
> 
> Nov  6 12:51:01 controller neutron-metadata-agent[3094]:   File 
> "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 460, 
> in fire_timers
> Nov  6 12:51:01 controller neutron-metadata-agent[3094]: timer()
> Nov  6 12:51:01 controller neutron-metadata-agent[3094]:   File 
> "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/timer.py", line 
> 59, in __call__
> Nov  6 12:51:01 controller neutron-metadata-agent[3094]: cb(*args, **kw)
> Nov  6 12:51:01 controller neutron-metadata-agent[3094]:   File 
> "/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py", line 
> 219, in main
> Nov  6 12:51:01 controller neutron-metadata-agent[3094]: result = 
> function(*args, **kwargs)
> Nov  6 12:51:01 controller neutron-metadata-agent[3094]:   File 
> "/usr/local/lib/python2.7/dist-packages/eventlet/wsgi.py", line 793, in 
> process_request
> Nov  6 12:51:01 controller neutron-metadata-agent[3094]: 
> proto.__init__(conn_state, self)
> Nov  6 12:51:01 controller neutron-metadata-agent[3094]: TypeError: 
> __init__() takes exactly 4 arguments (3 given)
> 
> *Neither rebooting the controller, reinstalling neutron, or restarting 
> the services will do anything top fix this.*
> 
> Has anyone else seen this? We are using Queens with a single controller.
> 
> Kind Regards
> 
> Terje Lundin
> 
> 
> 
> 
> 
> 
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