[Bug 1635131] Re: Value for option url is not valid: invalid URI (inappropriate validation of rfc3986)

[György Szombathelyi]

Sorry, not Mitaka, Newton

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https://bugs.launchpad.net/bugs/1635131

Title:
  Value for option url is not valid: invalid URI (inappropriate
  validation of rfc3986)

Status in OpenStack Compute (nova):
  New
Status in python-rfc3986 package in Ubuntu:
  New

Bug description:
  I have a fresh installed OpenStack Newton environment based on Ubuntu
  16.04. I am facing a regression in the Nova module regarding URI
  parsing.

  $ apt list --installed | grep -E 'nova|rfc'
  nova-api/xenial-updates,xenial-updates,now 2:14.0.1-0ubuntu1~cloud0 all [installed]
  nova-common/xenial-updates,xenial-updates,now 2:14.0.1-0ubuntu1~cloud0 all [installed,automatic]
  nova-conductor/xenial-updates,xenial-updates,now 2:14.0.1-0ubuntu1~cloud0 all [installed]
  nova-consoleauth/xenial-updates,xenial-updates,now 2:14.0.1-0ubuntu1~cloud0 all [installed]
  nova-novncproxy/xenial-updates,xenial-updates,now 2:14.0.1-0ubuntu1~cloud0 all [installed]
  nova-scheduler/xenial-updates,xenial-updates,now 2:14.0.1-0ubuntu1~cloud0 all [installed]
  python-nova/xenial-updates,xenial-updates,now 2:14.0.1-0ubuntu1~cloud0 all [installed,automatic]
  python-novaclient/xenial-updates,xenial-updates,now 2:6.0.0-0ubuntu1~cloud0 all [installed,automatic]
  python-rfc3986/xenial,xenial,now 0.2.0-2 all [installed,automatic]

  This is an excerpt from my nova.conf:
  [neutron]
  auth_type = password
  auth_uri = http://os-identity:5000
  auth_url = http://os-identity:35357
  metadata_proxy_shared_secret = XYZ
  password = XYZ
  project_domain_name = default
  project_name = service
  region_name = RegionOne
  service_metadata_proxy = true
  url = http://os-network:9696
  user_domain_name = default
  username = neutron

  The following error is stated in the log:
  2016-10-20 08:28:40.251 19479 CRITICAL nova [req-26ab01e7-72b0-4792-a8a4-56454a4c390c - - - - -] ConfigFileValueError: Value for option url is not valid: invalid URI: 'http://os-network:9696'
  2016-10-20 08:28:40.251 19479 ERROR nova Traceback (most recent call last):
  2016-10-20 08:28:40.251 19479 ERROR nova   File "/usr/bin/nova-api", line 10, in <module>
  2016-10-20 08:28:40.251 19479 ERROR nova     sys.exit(main())
  2016-10-20 08:28:40.251 19479 ERROR nova   File "/usr/lib/python2.7/dist-packages/nova/cmd/api.py", line 73, in main
  2016-10-20 08:28:40.251 19479 ERROR nova     launcher.wait()
  2016-10-20 08:28:40.251 19479 ERROR nova   File "/usr/lib/python2.7/dist-packages/oslo_service/service.py", line 568, in wait
  2016-10-20 08:28:40.251 19479 ERROR nova     self.conf.log_opt_values(LOG, logging.DEBUG)
  2016-10-20 08:28:40.251 19479 ERROR nova   File "/usr/lib/python2.7/dist-packages/oslo_config/cfg.py", line 2626, in log_opt_values
  2016-10-20 08:28:40.251 19479 ERROR nova     _sanitize(opt, getattr(group_attr, opt_name)))
  2016-10-20 08:28:40.251 19479 ERROR nova   File "/usr/lib/python2.7/dist-packages/oslo_config/cfg.py", line 3057, in __getattr__
  2016-10-20 08:28:40.251 19479 ERROR nova     return self._conf._get(name, self._group)
  2016-10-20 08:28:40.251 19479 ERROR nova   File "/usr/lib/python2.7/dist-packages/oslo_config/cfg.py", line 2668, in _get
  2016-10-20 08:28:40.251 19479 ERROR nova     value = self._do_get(name, group, namespace)
  2016-10-20 08:28:40.251 19479 ERROR nova   File "/usr/lib/python2.7/dist-packages/oslo_config/cfg.py", line 2711, in _do_get
  2016-10-20 08:28:40.251 19479 ERROR nova     % (opt.name, str(ve)))
  2016-10-20 08:28:40.251 19479 ERROR nova ConfigFileValueError: Value for option url is not valid: invalid URI: 'http://os-network:9696'

  The same problem was reported here:
  https://bugs.launchpad.net/kolla/+bug/1629729

  As it is stated there 'python-rfc3986' could not handle URI which has
  '-' characters in case of older versions of python-rfc3986 than 0.3.0.

  A current workaround is to use e.g. the ip address instead of a
  hostname or alias that has a hyphen in its name.

  The same problem exists in nova-compute on my compute node using:
  [vnc]
  enabled = true
  novncproxy_base_url = https://os-cloud.mycompany.com:6080/vnc_auto.html
  vncserver_listen = 0.0.0.0

  The setting causes the same invalid uri exception as stated above.

  We need a new version of 'python-rfc3986'.

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