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  • 如何优雅的退出/关闭/重启gunicorn进程

    在工作中,会发现gunicorn启动的web服务,无论怎么使用kill -9 进程号都是无法杀死gunicorn,经过我一番百度和谷歌,发现想要删除gunicorn进程其实很简单。

    1. 寻找masterpid

    通过执行如下命令,可以获取Gunicorn进程树:
    pstree -ap|grep gunicorn

    得到如下的结果。

    |-grep,6194 --col gunicorn
      |   `-gunicorn,30080 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,4413 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,8030 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,8135 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,8137 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,11532 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,13460 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,19728 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,23585 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,23825 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,27921 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,28899 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,28900 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,28901 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,35637 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,36963 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,43074 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,43118 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,43232 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,43307 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,43308 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,44018 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,46996 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       |-gunicorn,47000 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py
      |       `-gunicorn,47650 /usr/local/bin/gunicorn collect:app -c collect_gunicorn.py

    很显然,30080就是Gunicorn的主进程。

    2. 重启Gunicorn任务

    按照官方的推荐方法,很容易执行命令:

    kill -HUP 30080

    执行上述命令后,再次执行“pstree -ap|grep gunicorn”,我们很容易发现,除了主进程,其他的Gunicorn进程都已经销毁,并新建了进程(进程ID发生了变化)。

    3. 退出Gunicorn任务

    kill -9 30080
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  • 原文地址:https://www.cnblogs.com/ExMan/p/11140329.html
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