如何从内部错误中退出 uWsgi worker (python werkzeug)? [英] How can I exit uWsgi worker (python werkzeug) from internal error?

问题描述

我有一个使用 werkzeug 用 python 编写的 RESTful API.它与 nginx/uWsgi 一起运行.我想在发生内部错误(LOST zookeeper 会话)时终止工作进程，并让 uWsgi 产生一个新的工作进程.

I have a RESTful API written in python using werkzeug. It runs with nginx/uWsgi. I would like to kill worker process when an internal error (LOST zookeeper session) occurs and let uWsgi will spawn a new worker.

如果我调用 sys.exit(0)，worker 不会退出.也许 SystemExit 或 Exception 正在某处被捕获.我使用 init 脚本作为服务运行，

If I call sys.exit(0), worker does not exit. Perhaps SystemExit or Exception is being caught somewhere. I am running as a service using init script with,

exec $root/run uwsgi --socket 127.0.0.1:3037 --master --workers 4 --threads 10 --harakiri 60 --die-on-term --thunder-lock --lazy-apps --py-tracebacker/tmp/ledgerwebtbsock --wsgi-file my_server.py --logto/my_server.py

exec $root/run uwsgi --socket 127.0.0.1:3037 --master --workers 4 --threads 10 --harakiri 60 --die-on-term --thunder-lock --lazy-apps --py-tracebacker /tmp/ledgerwebtbsock --wsgi-file my_server.py --logto /my_server.py

推荐答案

uwsgi --help | grep on-exception

返回一系列选项来控制在引发特定异常时自动重启工作器:

Returns a bunch of options to control automatically restarting workers when a specific exception is raised:

--reload-on-exception                   reload a worker when an exception is raised
--reload-on-exception-type              reload a worker when a specific exception type is raised
--reload-on-exception-value             reload a worker when a specific exception value is raised
--reload-on-exception-repr              reload a worker when a specific exception type+value (language-specific) is raised

查看 Roberto de Ioris 的 10 个 uWSGI 技巧 - DjangoDay 2012 演示了解更多.

Check out slide 9 from Roberto de Ioris's 10 uWSGI tricks - DjangoDay 2012 presentation for more.

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