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[Bug 1373950] Re: Serial proxy service and API broken by design

 

** Changed in: nova
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1373950

Title:
  Serial proxy service  and API broken by design

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  As part of the blueprint https://blueprints.launchpad.net/nova/+spec
  /serial-ports we introduced an API extension and a websocket proxy
  binary. The problem with the 2 is that a lot of the stuff was copied
  verbatim from the novnc-proxy API and service which relies heavily on
  the internal implementation details of NoVNC and python-websockify
  libraries.

  We should not ship a service that will proxy websocket traffic if we
  do not acutally serve a web-based client for it (in the NoVNC case, it
  has it's own HTML5 VNC implementation that works over ws://). No
  similar thing was part of the proposed (and accepted) implementation.
  The websocket proxy based on websockify that we currently have
  actually assumes it will serve static content (which we don't do for
  serial console case) which will then when excuted in the browser
  initiate a websocket connection that sends the security token in the
  cookie: field of the request. All of this is specific to the NoVNC
  implementation (see:
  https://github.com/kanaka/noVNC/blob/e4e9a9b97fec107b25573b29d2e72a6abf8f0a46/vnc_auto.html#L18)
  and does not make any sense for serial console functionality.

  The proxy service was introduced in
  https://review.openstack.org/#/c/113963/

  In a similar manner - the API that was proposed and implemented (in
  https://review.openstack.org/#/c/113966/) that gives us back the URL
  with the security token makes no sense for the same reasons outlined
  above.

  We should revert at least these 2 patches before the final Juno
  release as we do not want to ship a useless service and commit to a
  useles API method.

  We could then look into providing similar functionality through
  possibly something like https://github.com/chjj/term.js which will
  require us to write a different proxy service.

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