[Bug 1311140] Re: [SRU] powering multiple nodes errors with max retries

[Andres Rodriguez]

Please, also copy this to ubuntu+1 (ubuntu r)

** Description changed:

  When powering multiple nodes on at once, in different sub-processes. The
  following error is generated and the node is not powered off or on
  accordingly.
  
  Traceback (most recent call last):
-   File "<stdin>", line 2, in <module>
-   File "/usr/lib/python2.7/dist-packages/provisioningserver/custom_hardware/seamicro.py", line 324, in power_control_seamicro15k_v2
-     server.power_on(using_pxe=True)
-   File "/usr/lib/python2.7/dist-packages/seamicroclient/v2/servers.py", line 28, in power_on
-     self.manager.power_on(self, using_pxe)
-   File "/usr/lib/python2.7/dist-packages/seamicroclient/v2/servers.py", line 114, in power_on
-     self._action('power-on', server, action_params)
-   File "/usr/lib/python2.7/dist-packages/seamicroclient/v2/servers.py", line 219, in _action
-     return self.api.client.put(url, body=body)
-   File "/usr/lib/python2.7/dist-packages/seamicroclient/client.py", line 165, in put
-     return self._cs_request(url, 'PUT', **kwargs)
-   File "/usr/lib/python2.7/dist-packages/seamicroclient/client.py", line 155, in _cs_request
-     **kwargs)
-   File "/usr/lib/python2.7/dist-packages/seamicroclient/client.py", line 141, in _time_request
-     resp, body = self.request(url, method, **kwargs)
-   File "/usr/lib/python2.7/dist-packages/seamicroclient/client.py", line 115, in request
-     **kwargs)
-   File "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 383, in request
-     resp = self.send(prep, **send_kwargs)
-   File "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 486, in send
-     r = adapter.send(request, **kwargs)
-   File "/usr/lib/python2.7/dist-packages/requests/adapters.py", line 378, in send
-     raise ConnectionError(e)
+   File "<stdin>", line 2, in <module>
+   File "/usr/lib/python2.7/dist-packages/provisioningserver/custom_hardware/seamicro.py", line 324, in power_control_seamicro15k_v2
+     server.power_on(using_pxe=True)
+   File "/usr/lib/python2.7/dist-packages/seamicroclient/v2/servers.py", line 28, in power_on
+     self.manager.power_on(self, using_pxe)
+   File "/usr/lib/python2.7/dist-packages/seamicroclient/v2/servers.py", line 114, in power_on
+     self._action('power-on', server, action_params)
+   File "/usr/lib/python2.7/dist-packages/seamicroclient/v2/servers.py", line 219, in _action
+     return self.api.client.put(url, body=body)
+   File "/usr/lib/python2.7/dist-packages/seamicroclient/client.py", line 165, in put
+     return self._cs_request(url, 'PUT', **kwargs)
+   File "/usr/lib/python2.7/dist-packages/seamicroclient/client.py", line 155, in _cs_request
+     **kwargs)
+   File "/usr/lib/python2.7/dist-packages/seamicroclient/client.py", line 141, in _time_request
+     resp, body = self.request(url, method, **kwargs)
+   File "/usr/lib/python2.7/dist-packages/seamicroclient/client.py", line 115, in request
+     **kwargs)
+   File "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 383, in request
+     resp = self.send(prep, **send_kwargs)
+   File "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 486, in send
+     r = adapter.send(request, **kwargs)
+   File "/usr/lib/python2.7/dist-packages/requests/adapters.py", line 378, in send
+     raise ConnectionError(e)
  requests.exceptions.ConnectionError: HTTPConnectionPool(host='192.168.220.102', port=80): Max retries exceeded with url: /v2.0/servers/21/0 (Caused by <class 'httplib.BadStatusLine'>: '')
+ 
+ [Impact]
+ This bug affects the ability of MAAS (and really any other client/user) to power on multiple (at scale) nodes in a Seamicro15000 chassis using their python-seamicroclient APIT, which is what MAAS uses. This prevents MAAS from being able to power manage many nodes at the time.
+ 
+ [Test Case]
+ 1. Install MAAS. (sudo apt-get install maas)
+ 2. Register SM15k. (maas admin node-group probe-and-enlist-hardware <clkuster-uuid) model=seamicro15k mac=<mac> username=<user> password=<pass> power_control=restapi2
+ 3. Power on Many nodes at the time (juju deploy -n 10)
+ 4. Fail.
+ 
+ With the fix:
+ 
+ 3. power on many nodes at the time will succeed.
+ 
+ [Regression Potential]
+ Minimal. This only affects power on/off of nodes. This has been tested against hardware at one of our labs.

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https://bugs.launchpad.net/bugs/1311140

Title:
  [SRU] powering multiple nodes errors with max retries

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