python-2.7 - 无法在 jupyterhub 中运行多个内核（Python 版本）

Question

嗨，我正在使用 jupyterhub 运行笔记本服务器，但我无法访问不同的内核（python 版本）。

我正确设置了各种 enronments，当我输入

jupyter kernelspec list

我得到以下输出

Available kernels:              
bash       /home/username/.local/share/jupyter/kernels/bash  
python2    /usr/local/share/jupyter/kernels/python2                  
python3    /usr/local/share/jupyter/kernels/python3

但是当 jupyterhub 启动时它只发现 Python3 内核可用？

如何让它检测所有可用的 python 版本？

cat /usr/local/share/jupyter/kernels/python2/kernel.json  

{                                                   
"display_name": "Python 2",
"language": "python",
"argv": [
"/opt/anaconda3/envs/py27/bin/python2.7",
"-m",
"ipykernel",
"-f",
"{connection_file}"                                                        
]       
}

cat /usr/local/share/jupyter/kernels/python3/kernel.json  

{ 
"language": "python",                                                 
"display_name": "Python 3",
"argv": [
"/opt/anaconda3/bin/python3",
"-m",
"ipykernel",
"-f",
"{connection_file}"                                                        
] 
}

Answer 1

请检查/usr/local/share/jupyter/kernels/python2/kernel.json文件中的特权。如果它不是每个人都可读的，那么您将不会在 Jupyter 中看到它。

它应该有 644 个权限：

# ls -l
-rw-r--r-- 1 root root  158 Apr 15 12:47 kernel.json

Answer 2

你为 python2.7 安装了 ipykernel 吗？

pip2.7 install ipykernel
python2.7 -m ipykernel install --user