Python 主管：尝试启动 gunicorn 时出现错误（生成错误）
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Supervisor: ERROR (spawn error) when trying to launch gunicorn
提问by peachykeen
I have been trying to setup gunicorn with supervisor per these instructions. However when I run
我一直在尝试按照这些说明与主管一起设置 gunicorn 。但是当我跑
sudo supervisorctl reread
sudo supervisorctl update
sudo supervisorctl start Server-CardLearning
I get the error Server-CardLearning: ERROR (spawn error).
我收到错误Server-CardLearning: ERROR (spawn error)。
My configuration file is simple.
我的配置文件很简单。
[program:Server-CardLearning]
command = gunicorn app:app -b localhost:8000
directory = /home/alexg/www/<flask project>
user = www-data
I get the following errors in my log file.
我的日志文件中出现以下错误。
...
...
2017-11-30 13:48:52,276 INFO gave up: Server-CardLearning entered FATAL state, too many start retries too quickly
2017-11-30 13:49:10,595 INFO spawnerr: unknown error making dispatchers for 'Server-CardLearning': ENOENT
2017-11-30 13:49:11,597 INFO spawnerr: unknown error making dispatchers for 'Server-CardLearning': ENOENT
2017-11-30 13:49:13,599 INFO spawnerr: unknown error making dispatchers for 'Server-CardLearning': ENOENT
2017-11-30 13:49:16,603 INFO spawnerr: unknown error making dispatchers for 'Server-CardLearning': ENOENT
2017-11-30 13:49:16,603 INFO gave up: Server-CardLearning entered FATAL state, too many start retries too quickly
2017-11-30 13:58:12,101 INFO spawned: 'Server-CardLearning' with pid 13725
2017-11-30 13:58:12,560 INFO exited: Server-CardLearning (exit status 3; not expected)
2017-11-30 13:58:13,563 INFO spawned: 'Server-CardLearning' with pid 13730
2017-11-30 13:58:13,982 INFO exited: Server-CardLearning (exit status 3; not expected)
2017-11-30 13:58:15,986 INFO spawned: 'Server-CardLearning' with pid 13735
2017-11-30 13:58:16,411 INFO exited: Server-CardLearning (exit status 3; not expected)
2017-11-30 13:58:19,416 INFO spawned: 'Server-CardLearning' with pid 13742
2017-11-30 13:58:19,842 INFO exited: Server-CardLearning (exit status 3; not expected)
2017-11-30 13:58:20,843 INFO gave up: Server-CardLearning entered FATAL state, too many start retries too quickly
...
...
2017-11-30 14:10:29,728 INFO spawned: 'Server-CardLearning' with pid 13901
2017-11-30 14:10:29,957 INFO exited: Server-CardLearning (exit status 2; not expected)
2017-11-30 14:10:30,961 INFO spawned: 'Server-CardLearning' with pid 13902
2017-11-30 14:10:31,193 INFO exited: Server-CardLearning (exit status 2; not expected)
2017-11-30 14:10:33,200 INFO spawned: 'Server-CardLearning' with pid 13903
2017-11-30 14:10:33,436 INFO exited: Server-CardLearning (exit status 2; not expected)
2017-11-30 14:10:36,443 INFO spawned: 'Server-CardLearning' with pid 13904
2017-11-30 14:10:36,681 INFO exited: Server-CardLearning (exit status 2; not expected)
2017-11-30 14:10:37,682 INFO gave up: Server-CardLearning entered FATAL state, too many start retries too quickly
Where am I going wrong? I have tried some things I saw on stack overflow, but nothing proved to be relevant to this problem.
我哪里错了？我尝试了一些我在堆栈溢出中看到的东西，但没有证明与这个问题相关。
回答by peachykeen
The root of the problem seemed to be that I had an issue with app.py. I was using some Flask library that I had installed on my local machine but not the server and for some reason I didn't get big errors when I ran the server via flask run --host=0.0.0.0.
问题的根源似乎是我对app.py. 我使用的是我在本地机器上安装的一些 Flask 库，但没有安装在服务器上，由于某种原因，当我通过flask run --host=0.0.0.0.
I figured this out by adjusting supervisor .conffile which is located at /etc/supervisor/conf.d/Server-CardLearning.conf
我通过调整.conf位于/etc/supervisor/conf.d/Server-CardLearning.conf
The new .conffile reads:
新.conf文件内容如下：
[program:Server-CardLearning]
environment=SECRET_KEY="some_secret_key"
command=gunicorn app:app -b localhost:8000
directory=/home/alexg/www/Server-CardLearning
user=alexg
autostart=true
stderr_logfile=/var/log/supervisor/test.err.log
stdout_logfile=/var/log/supervisor/test.out.log
By adding the two log files I was able to run:
通过添加两个日志文件，我能够运行：
cat /var/log/supervisor/test.err.log
cat /var/log/supervisor/test.err.log
to see that I had an uninstalled library! ~Gasp!~
看到我有一个卸载的库！~喘气！~
After installing the library, I ran:
安装库后，我运行：
sudo supervisorctl reread
sudo supervisorctl update
sudo supervisorctl start Server-CardLearning
Now, if that doesn't fix it, I also found that digging around in the supervisor console was helpful:
现在，如果这不能解决它，我还发现在主管控制台中挖掘是有帮助的：
$ sudo supervisorctl
supervisor> help
supervisor> status
I hope this helps someone out!
我希望这可以帮助别人！
