Supervisor 无法停止 Jupyter Notebook

最近在玩 Jupyter Notebook ，想用这个来写学习 Python 的笔记！打算通过 Supervisor 来管理 Jupyter Notebook ，再加上一个 Nginx 进行反向代理（略显无聊，纯粹为了好玩）。

结果现在卡在 Supervisor 管理 Jupyter Notebook 上了。废话少说，贴代码：

相关配置

Supervisor 的配置

# 这分别是 supervisord 和 Jupyter 程序的配置
[supervisord]
logfile=/home/supervisord/supervisord.log ; (main log file;default $CWD/supervisord.log)
logfile_maxbytes=50MB        ; (max main logfile bytes b4 rotation;default 50MB)
logfile_backups=10           ; (num of main logfile rotation backups;default 10)
loglevel=info                ; (log level;default info; others: debug,warn,trace)
pidfile=/home/supervisord/supervisord.pid ; (supervisord pidfile;default supervisord.pid)
nodaemon=false               ; (start in foreground if true;default false)
minfds=1024                  ; (min. avail startup file descriptors;default 1024)
minprocs=200                 ; (min. avail process descriptors;default 200)
;umask=022                   ; (process file creation umask;default 022)
;user=chrism                 ; (default is current user, required if root)
;identifier=supervisor       ; (supervisord identifier, default is 'supervisor')
;directory=/tmp              ; (default is not to cd during start)
;nocleanup=true              ; (don't clean up tempfiles at start;default false)
;childlogdir=/tmp            ; ('AUTO' child log dir, default $TEMP)
;environment=KEY="value"     ; (key value pairs to add to environment)
;strip_ansi=false            ; (strip ansi escape codes in logs; def. false)

[program:jupyter-notebook]
user=xff
command=bash /home/xff/bin/start_notebook.sh
process_name=ipython_notebook
environment=HOME="/home/xff/"
numprocs=1
numprocs_start=3
direcotory=/home/xff/Documents
stdout_logfile=/home/supervisord/jupyter-notebook.log        ; stdout log path, NONE for none; default AUTO
stdout_logfile_maxbytes=1MB   ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=10     ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB   ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false   ; emit events on stdout writes (default false)
stderr_logfile=/home/supervisord/jupyter-notebook.err        ; stderr log path, NONE for none; default AUTO
stderr_logfile_maxbytes=1MB   ; max # logfile bytes b4 rotation (default 50MB)
stderr_logfile_backups=10     ; # of stderr logfile backups (default 10)
stderr_capture_maxbytes=1MB   ; number of bytes in 'capturemode' (default 0)
stderr_events_enabled=false   ; emit events on stderr writes (default false)
stopsignal=KILL
stopwaitsecs=5
;autostart=true
;autorestart=true

Jupyter Notebook 的启动脚本

# /home/xff/bin/start_notebook.sh 文件， Jupyter Notebook 的启动脚本
#!/bin/bash
NOTEBOOK_CMD="/home/xff/.virtualenvs/jupyter/bin/jupyter-notebook --config=/home/xff/.jupyter/jupyter_notebook_config.py"
echo $NOTEBOOK_CMD >> /home/xff/log
$NOTEBOOK_CMD

错误情况

通过 supervisorctl 启动 Jupyter Notebook 后，进程树是这样的：

root       5004  0.0  1.3 207632 13264 ?        Ss   16:51   0:00 /usr/local/Python-2.7.11/bin/python2.7 /usr/local/Python-2.7.11/bin/supervisord -c /etc/supervisord.conf --user=root
xff        5142  0.1  0.1 106100  1220 ?        S    17:00   0:00  \_ bash /home/xff/bin/start_notebook.sh
xff        5143  7.8  3.4 286876 35104 ?        S    17:00   0:00      \_ /home/xff/.virtualenvs/jupyter/bin/python2.7 /home/xff/.virtualenvs/jupyter/bin/jupyter-notebook --config=/home/xff/.jupyter/jupyter_notebook_config.py

在 supervisorctl 上停止 Jupyter Notebook 之后，进程树就变成这样了，

root       3196  0.0  0.1  42708  1836 ?        Ss   15:33   0:00 nginx: master process nginx
www        3728  0.0  0.2  43124  2196 ?        S    16:03   0:02  \_ nginx: worker process
www        3729  0.0  0.2  43124  2196 ?        S    16:03   0:01  \_ nginx: worker process
root       5004  0.0  1.3 207784 13336 ?        Ss   16:51   0:00 /usr/local/Python-2.7.11/bin/python2.7 /usr/local/Python-2.7.11/bin/supervisord -c /etc/supervisord.conf --user=root
xff        5143  0.2  3.4 286876 35104 ?        S    17:00   0:00 /home/xff/.virtualenvs/jupyter/bin/python2.7 /home/xff/.virtualenvs/jupyter/bin/jupyter-notebook --config=/home/xff/.jupyter/jupyter_notebook_config.py

很明显， Jupyter Notebook 的进程并没有被停止，它变成了孤儿进程，被 Init 收养了。

我开始以为是 supervisor 发送的停止信号不对，后来吧 supervisor 配置文件中，程序的停止信号stopsignal变成了kill还是不行，但如果我在命令行中执行

# Jupyter Notebook 默认监听的是 8888 端口
kill -9 `lsof -ti:8888`

是可以的！

万能的 V 友们，给点提示吧，这是什么原因啊，从哪里入手解决呀！