配置后台服务/常驻进程的进程管家工具
# 安装 supervisord
apt-get install supervisor
生成配置文件 /etc/supervisord.conf
[program:app]
command=/usr/bin/gunicorn -w 1 wsgiapp:application
directory=/srv/www
user=www-data
supervisord: 启动 supervisor 服务
supervisorctl start app
supervisorctl stop app
supervisorctl reload # 修改/添加配置文件需要执行这个
https://pypi.python.org/pypi/meld3
https://pypi.python.org/pypi/supervisor