Websocket in zun-ui gives "handler exception: Origin header does not match this host"

[Francois Michaut]

By following the install instructions of zun's install guide, the configuration of the websocket proxy in zun.conf on the controller is something like this :

[websocket_proxy]
...
wsproxy_host = 10.0.0.11
wsproxy_port = 6784
base_url = ws://controller.hostname.external:6784/

"controller.hostname.external" is the hostname for the controller that users can reach. "controller" is the hostname used internally by openstack services.

But with this configuration, the console in zun-ui is "OPEN" but nothing gets ever printed.
Looking at the logs of zun-wsproxy we can see the request made by zun-ui followed by the error : "handler exception: Origin header does not match this host".

Adding "allowed_origins = controller" to websocket_proxy in zun.conf resolves the issue.

"allowed_origins" wans't mentioned in the documentation, maybe it should be or is there another way to avoid this issue ?

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-----------------------------------
Release: 8.0.0.0rc2.dev2 on 2020-04-22 00:44:46
SHA: 3784d99f0cd27a7cf1fd674478b7254d0a35d9e2
Source: https://opendev.org/openstack/zun/src/doc/source/install/controller-install.rst
URL: https://docs.openstack.org/zun/xena/install/controller-install.html

[Maroš Varchola (marosvarchola)]

Hey! Same here