/data/itlab/jupyterhub/miniconda3/bin/jupyterhub-singleuser
[I 2018-07-09 09:48:32.028 SingleUserNotebookApp singleuser:365] Starting jupyterhub-singleuser server version 0.8.0
[E 2018-07-09 09:48:35.033 SingleUserNotebookApp singleuser:354] Failed to connect to my Hub at http://192.168.10.42:8081/hub/api (attempt 1/5). Is it running?
    Traceback (most recent call last):
      File "/data/itlab/jupyterhub/miniconda3/lib/python3.6/site-packages/jupyterhub/singleuser.py", line 351, in check_hub_version
        resp = yield client.fetch(self.hub_api_url)
      File "/data/itlab/jupyterhub/miniconda3/lib/python3.6/site-packages/tornado/gen.py", line 1055, in run
        value = future.result()
      File "/data/itlab/jupyterhub/miniconda3/lib/python3.6/site-packages/tornado/concurrent.py", line 238, in result
        raise_exc_info(self._exc_info)
      File "<string>", line 4, in raise_exc_info
    OSError: [Errno 113] No route to host
[E 2018-07-09 09:48:38.033 SingleUserNotebookApp singleuser:354] Failed to connect to my Hub at http://192.168.10.42:8081/hub/api (attempt 2/5). Is it running?
    Traceback (most recent call last):
      File "/data/itlab/jupyterhub/miniconda3/lib/python3.6/site-packages/jupyterhub/singleuser.py", line 351, in check_hub_version
        resp = yield client.fetch(self.hub_api_url)
      File "/data/itlab/jupyterhub/miniconda3/lib/python3.6/site-packages/tornado/gen.py", line 1055, in run
        value = future.result()
      File "/data/itlab/jupyterhub/miniconda3/lib/python3.6/site-packages/tornado/concurrent.py", line 238, in result
        raise_exc_info(self._exc_info)
      File "<string>", line 4, in raise_exc_info
    OSError: [Errno 113] No route to host
[E 2018-07-09 09:48:45.040 SingleUserNotebookApp singleuser:354] Failed to connect to my Hub at http://192.168.10.42:8081/hub/api (attempt 3/5). Is it running?
    Traceback (most recent call last):
      File "/data/itlab/jupyterhub/miniconda3/lib/python3.6/site-packages/jupyterhub/singleuser.py", line 351, in check_hub_version
        resp = yield client.fetch(self.hub_api_url)
      File "/data/itlab/jupyterhub/miniconda3/lib/python3.6/site-packages/tornado/gen.py", line 1055, in run
        value = future.result()
      File "/data/itlab/jupyterhub/miniconda3/lib/python3.6/site-packages/tornado/concurrent.py", line 238, in result
        raise_exc_info(self._exc_info)
      File "<string>", line 4, in raise_exc_info
    OSError: [Errno 113] No route to host
[E 2018-07-09 09:48:56.050 SingleUserNotebookApp singleuser:354] Failed to connect to my Hub at http://192.168.10.42:8081/hub/api (attempt 4/5). Is it running?
    Traceback (most recent call last):
      File "/data/itlab/jupyterhub/miniconda3/lib/python3.6/site-packages/jupyterhub/singleuser.py", line 351, in check_hub_version
        resp = yield client.fetch(self.hub_api_url)
      File "/data/itlab/jupyterhub/miniconda3/lib/python3.6/site-packages/tornado/gen.py", line 1055, in run
        value = future.result()
      File "/data/itlab/jupyterhub/miniconda3/lib/python3.6/site-packages/tornado/concurrent.py", line 238, in result
        raise_exc_info(self._exc_info)
      File "<string>", line 4, in raise_exc_info
    OSError: [Errno 113] No route to host
[E 2018-07-09 09:49:15.068 SingleUserNotebookApp singleuser:354] Failed to connect to my Hub at http://192.168.10.42:8081/hub/api (attempt 5/5). Is it running?
    Traceback (most recent call last):
      File "/data/itlab/jupyterhub/miniconda3/lib/python3.6/site-packages/jupyterhub/singleuser.py", line 351, in check_hub_version
        resp = yield client.fetch(self.hub_api_url)
      File "/data/itlab/jupyterhub/miniconda3/lib/python3.6/site-packages/tornado/gen.py", line 1055, in run
        value = future.result()
      File "/data/itlab/jupyterhub/miniconda3/lib/python3.6/site-packages/tornado/concurrent.py", line 238, in result
        raise_exc_info(self._exc_info)
      File "<string>", line 4, in raise_exc_info
    OSError: [Errno 113] No route to host