openstack router show fails with TypeError

[Saverio Proto]

If I do:

neutron router-show $uuid

it works,

but with the same uuid

openstack --debug router show $uuid

REQ: curl -g -i -X GET https://api.s1.scloud.switch.ch:9696/v2.0/routers/e66b21d3-a795-4854-ae94-de8a1ea34c9d -H "User-Agent: openstacksdk/0.9.10 keystoneauth1/2.15.0 python-requests/2.12.2 CPython/2.7.6" -H "X-Auth-Token: {SHA1}secret"
https://api.s1.scloud.switch.ch:9696 "GET /v2.0/routers/e66b21d3-a795-4854-ae94-de8a1ea34c9d HTTP/1.1" 200 544
RESP: [200] Server: nginx Date: Wed, 30 Nov 2016 16:22:26 GMT Content-Type: application/json; charset=UTF-8 Content-Length: 544 Connection: keep-alive X-Openstack-Request-Id: req-d7017b97-53f9-4f1c-bd09-fdac93ed0c5c Strict-Transport-Security: max-age=31536000; includeSubdomains
RESP BODY: {"router": {"status": "ACTIVE", "external_gateway_info": {"network_id": "7313f148-f340-49b4-9d76-89de0702e801", "enable_snat": true, "external_fixed_ips": [{"subnet_id": "9a669e61-9d31-41e6-953c-f3f98b11cd62", "ip_address": "86.119.0.147"}]}, "availability_zone_hints": [], "availability_zones": [null], "description": null, "admin_state_up": true, "tenant_id": "50578dfa29814f429e066da423376fbd", "distributed": false, "routes": [], "ha": false, "id": "e66b21d3-a795-4854-ae94-de8a1ea34c9d", "name": "50578dfa29814f429e066da423376fbd-router"}}

sequence item 0: expected string, NoneType found
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/cliff/app.py", line 400, in run_subcommand
    result = cmd.run(parsed_args)
  File "/usr/local/lib/python2.7/dist-packages/osc_lib/command/command.py", line 41, in run
    return super(Command, self).run(parsed_args)
  File "/usr/local/lib/python2.7/dist-packages/cliff/display.py", line 112, in run
    column_names, data = self.take_action(parsed_args)
  File "/usr/local/lib/python2.7/dist-packages/openstackclient/network/v2/router.py", line 527, in take_action
    data = utils.get_item_properties(obj, columns, formatters=_formatters)
  File "/usr/local/lib/python2.7/dist-packages/osc_lib/utils.py", line 324, in get_item_properties
    row.append(formatters[field](data))
  File "/usr/local/lib/python2.7/dist-packages/osc_lib/utils.py", line 209, in format_list
    return separator.join(sorted(data))
TypeError: sequence item 0: expected string, NoneType found
clean_up ShowRouter: sequence item 0: expected string, NoneType found
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/osc_lib/shell.py", line 135, in run
    ret_val = super(OpenStackShell, self).run(argv)
  File "/usr/local/lib/python2.7/dist-packages/cliff/app.py", line 279, in run
    result = self.run_subcommand(remainder)
  File "/usr/local/lib/python2.7/dist-packages/osc_lib/shell.py", line 180, in run_subcommand
    ret_value = super(OpenStackShell, self).run_subcommand(argv)
  File "/usr/local/lib/python2.7/dist-packages/cliff/app.py", line 400, in run_subcommand
    result = cmd.run(parsed_args)
  File "/usr/local/lib/python2.7/dist-packages/osc_lib/command/command.py", line 41, in run
    return super(Command, self).run(parsed_args)
  File "/usr/local/lib/python2.7/dist-packages/cliff/display.py", line 112, in run
    column_names, data = self.take_action(parsed_args)
  File "/usr/local/lib/python2.7/dist-packages/openstackclient/network/v2/router.py", line 527, in take_action
    data = utils.get_item_properties(obj, columns, formatters=_formatters)
  File "/usr/local/lib/python2.7/dist-packages/osc_lib/utils.py", line 324, in get_item_properties
    row.append(formatters[field](data))
  File "/usr/local/lib/python2.7/dist-packages/osc_lib/utils.py", line 209, in format_list
    return separator.join(sorted(data))
TypeError: sequence item 0: expected string, NoneType found

[Saverio Proto (zioproto)]

This behavior started when I upgraded neutron-server from Liberty to Mitaka

[Logan V (loganv)]

I'm not seeing this on my L->M upgraded env. Both router show methods work fine for me. Which client versions are you using?

$ openstack --version
openstack 2.6.0
$ neutron --version
5.1.0

[Mohammed Naser (mnaser)]

I see this, neutron-server from Liberty to Mitaka upgraded env. Same exact error.

$ openstack --version
openstack 3.4.1
$ neutron --version
6.0.0

[Mohammed Naser (mnaser)]

I think it comes from this:

"availability_zones": [null]

I have that in my response too.

[Saverio Proto (zioproto)]

openstack 3.4.1
neutron client 6.0.0

I build a docker container for my openstack cli. Dockerbuild file here:
https://github.com/zioproto/docker_stuff/blob/master/oscli/build/Dockerfile.pip

docker run -ti zioproto/oscli

and you can test with my same client version

[Saverio Proto (zioproto)]

I tested with openstack client 2.6.0 and I get the same backtrace.

[Dean Troyer (dtroyer)]

Is this still a problem in the current OSC release?

[Ankur (ankur-gupta-f)]

Not a problem with current release. Just tested.