From 4509c34c7fe79e758c27af57585e16b188260c0a Mon Sep 17 00:00:00 2001
From: Sahid Orentino Ferdjaoui <sahid.ferdjaoui@redhat.com>
Date: Fri, 31 Oct 2014 10:31:25 -0400
Subject: [PATCH] doc: document manual testing procedure for serial-console

Document how to test the recent feature serial-console

Change-Id: I738d2c0a1029a80e36797e7d1e349c191a1934da
---
 doc/source/devref/index.rst                  |   1 +
 doc/source/devref/testing/serial-console.rst | 120 +++++++++++++++++++
 2 files changed, 121 insertions(+)
 create mode 100644 doc/source/devref/testing/serial-console.rst

diff --git a/doc/source/devref/index.rst b/doc/source/devref/index.rst
index 575d4ec4daab..af9d7314028b 100644
--- a/doc/source/devref/index.rst
+++ b/doc/source/devref/index.rst
@@ -64,6 +64,7 @@ Testing guides
     :maxdepth: 3
 
     testing/libvirt-numa
+    testing/serial-console
 
 Other Resources
 ---------------
diff --git a/doc/source/devref/testing/serial-console.rst b/doc/source/devref/testing/serial-console.rst
new file mode 100644
index 000000000000..d9385966bb82
--- /dev/null
+++ b/doc/source/devref/testing/serial-console.rst
@@ -0,0 +1,120 @@
+
+======================
+Testing Serial Console
+======================
+
+The main aim of this feature is exposing an interactive web-based
+serial consoles through a web-socket proxy.
+This page describes how to test it from a devstack environement.
+
+---------------------------------
+Setting up a devstack environemnt
+---------------------------------
+
+.. code-block:: bash
+
+  # sudo apt-get install git -y || sudo yum install -y git
+  # git clone https://git.openstack.org/openstack-dev/devstack
+  # cd devstack && ./stack.sh
+
+-------------------------------------
+Starting the nova-serialproxy service
+-------------------------------------
+
+. code-block:: bash
+
+  # screen -S stack -X screen -t n-sproxy
+  # screen -S stack -p n-sproxy -X stuff 'sudo nova-serialproxy\r'
+
+-----------------------------
+Setting up a Nova environemnt
+-----------------------------
+
+The entire configuration is provided in `nova.conf` through the
+category `serial_console`.
+
+.. code-block:: bash
+
+  # cat >> /etc/nova/nova.conf <<EOF
+  [serial_console]
+  enabled = True
+  EOF
+
+To get more information about available options see:
+- http://docs.openstack.org/trunk/config-reference/content/list-of-compute-config-options.html
+
+You should now restart services 'n-api' and 'n-cpu' from the 'stack'
+screen; The command `./rejoin-stack.sh` located to the root directory
+of devstack will let you to join screen. By the combination of the keys
+"Ctrl+a" you should be able to switch between services. Just kill
+them with "Ctrl+c" and restart them by using the command history
+provided by bash "Up-Arrow".
+
+---------------
+Testing the API
+---------------
+
+Starting a new instance.
+
+.. code-block:: bash
+
+  # cd devstack && . openrc
+  # nova boot --flavor 1 --image cirros-0.3.2-x86_64-uec cirros1
+
+Nova provides a command `nova get-serial-console` which will returns a
+URL with a valid token to connect to the serial console of VMs.
+
+.. code-block:: bash
+
+  # nova get-serial-console cirros1
+  +--------+-----------------------------------------------------------------+
+  | Type   | Url                                                             |
+  +--------+-----------------------------------------------------------------+
+  | serial | ws://127.0.0.1:6083/?token=5f7854b7-bf3a-41eb-857a-43fc33f0b1ec |
+  +--------+-----------------------------------------------------------------+
+
+Currently nova does not provide any client able to connect from an
+interactive console through a web-socket.
+A simple client for *test purpose* can be written with few lines of Python.
+
+.. code-block:: python
+
+  # sudo easy_install ws4py || sudo pip install ws4py
+  # cat >> client.py <<EOF
+  import sys
+  from ws4py.client.threadedclient import WebSocketClient
+  class LazyClient(WebSocketClient):
+      def run(self):
+          try:
+              while not self.terminated:
+                  try:
+                      b = self.sock.recv(4096)
+                      sys.stdout.write(b)
+                      sys.stdout.flush()
+                  except: # socket error expected
+                      pass
+          finally:
+              self.terminate()
+  if __name__ == '__main__':
+      if len(sys.argv) != 2 or not sys.argv[1].startswith("ws"):
+          print "Usage %s: Please use websocket url"
+          print "Example: ws://127.0.0.1:6083/?token=xxx"
+          exit(1)
+      try:
+          ws = LazyClient(sys.argv[1], protocols=['binary'])
+          ws.connect()
+          while True:
+              # keyboard event...
+              c = sys.stdin.read(1)
+              if c:
+                  ws.send(c)
+          ws.run_forever()
+      except KeyboardInterrupt:
+          ws.close()
+  EOF
+
+.. code-block:: bash
+
+  # python client.py ws://127.0.0.1:6083/?token=5f7854b7-bf3a-41eb-857a-43fc33f0b1ec
+  <enter>
+  cirros1 login