错误详情：

(ironbank)deploy@app10:~/ironbank$ jupyter notebook --port 9191
Traceback (most recent call last):
  File "/home/deploy/.virtualenvs/ironbank/bin/jupyter-notebook", line 11, in <module>
    sys.exit(main())
  File "/home/deploy/.virtualenvs/ironbank/local/lib/python2.7/site-packages/jupyter_core/application.py", line 267, in launch_instance
    return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
  File "/home/deploy/.virtualenvs/ironbank/local/lib/python2.7/site-packages/traitlets/config/application.py", line 588, in launch_instance
    app.initialize(argv)
  File "<decorator-gen-115>", line 2, in initialize
  File "/home/deploy/.virtualenvs/ironbank/local/lib/python2.7/site-packages/traitlets/config/application.py", line 74, in catch_config_error
    return method(app, *args, **kwargs)
  File "/home/deploy/.virtualenvs/ironbank/local/lib/python2.7/site-packages/notebook/notebookapp.py", line 1005, in initialize
    self.init_configurables()
  File "/home/deploy/.virtualenvs/ironbank/local/lib/python2.7/site-packages/notebook/notebookapp.py", line 804, in init_configurables
    connection_dir=self.runtime_dir,
  File "/home/deploy/.virtualenvs/ironbank/local/lib/python2.7/site-packages/traitlets/traitlets.py", line 529, in __get__
    return self.get(obj, cls)
  File "/home/deploy/.virtualenvs/ironbank/local/lib/python2.7/site-packages/traitlets/traitlets.py", line 508, in get
    value = self._validate(obj, dynamic_default())
  File "/home/deploy/.virtualenvs/ironbank/local/lib/python2.7/site-packages/jupyter_core/application.py", line 99, in _runtime_dir_default
    ensure_dir_exists(rd, mode=0o700)
  File "/home/deploy/.virtualenvs/ironbank/local/lib/python2.7/site-packages/ipython_genutils/path.py", line 167, in ensure_dir_exists
    os.makedirs(path, mode=mode)
  File "/home/deploy/.virtualenvs/ironbank/lib/python2.7/os.py", line 157, in makedirs
    mkdir(name, mode)
OSError: [Errno 13] Permission denied: '/run/user/999/jupyter'

解决过程：

使用命令：

(ironbank)deploy@app10:~/ironbank$ jupyter --path

发现以下输出：

config:
    /home/deploy/.jupyter
    /home/deploy/.virtualenvs/ironbank/etc/jupyter
    /usr/local/etc/jupyter
    /etc/jupyter
data:
    /home/deploy/.local/share/jupyter
    /home/deploy/.virtualenvs/ironbank/share/jupyter
    /usr/local/share/jupyter
    /usr/share/jupyter
runtime:
    /run/user/999/jupyter

看着样子好像是修改 runtime 的设置就可以了，google 一下怎么设置 runtime。 找了大半天终于找到一篇文档： https://jupyter.readthedocs.org/en/latest/system.html#configuration 只需要修改 XDG_RUNTIME_DIR 环境变量的值就可以了。

export XDG_RUNTIME_DIR="/home/deploy/.virtualenvs/ironbank"

这时再执行：

jupyter notebook --port 9191 

就跑起来了。