如何在同一个 supervisord 文件中发出杀死 gunicorn 和运行 gunicorn 的命令？

Question

我有一个配置文件：

[program:nxchill]
directory=/home/ubuntu/dev/nxchill
command=gunicorn /home/ubuntu/dev/nxchill/nxchill:app -b localhost:5000
autostart=true
autorestart=true
stderr_logfile=/var/log/nxchill/nxchill.err.log
stdout_logfile=/var/log/nxchill/nxchill.out.log

我的objective是先运行命令：

sudo fuser -k 5000/tcp

停止所有 gunicorn 进程，然后执行以下命令：

gunicorn /home/ubuntu/dev/nxchill/nxchill:app -b localhost:5000

所以，当我在 conf 文件中创建 command 部分时：

command=sudo fuser -k 5000/tcp gunicorn /home/ubuntu/dev/nxchill/nxchill:app -b localhost:5000

运行以下命令：

sudo supervisorctl reread
sudo service supervisor restart
sudo service supervisor restart

nxchill FATAL Exited too quickly (process log may have details)

日志是：

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/gunicorn/arbiter.py", line 583, in spawn_worker
    worker.init_process()
  File "/usr/local/lib/python2.7/dist-packages/gunicorn/workers/base.py", line 129, in init_process
    self.load_wsgi()
  File "/usr/local/lib/python2.7/dist-packages/gunicorn/workers/base.py", line 138, in load_wsgi
    self.wsgi = self.app.wsgi()
  File "/usr/local/lib/python2.7/dist-packages/gunicorn/app/base.py", line 67, in wsgi
    self.callable = self.load()
  File "/usr/local/lib/python2.7/dist-packages/gunicorn/app/wsgiapp.py", line 52, in load
    return self.load_wsgiapp()
  File "/usr/local/lib/python2.7/dist-packages/gunicorn/app/wsgiapp.py", line 41, in load_wsgiapp
    return util.import_app(self.app_uri)
  File "/usr/local/lib/python2.7/dist-packages/gunicorn/util.py", line 350, in import_app
    __import__(module)
ImportError: Import by filename is not supported.
[2018-06-04 07:59:33 +0000] [1527] [INFO] Worker exiting (pid: 1527)
[2018-06-04 07:59:33 +0000] [1523] [INFO] Shutting down: Master
[2018-06-04 07:59:33 +0000] [1523] [INFO] Reason: Worker failed to boot.

现在，即使只有一个命令存在，也会出现同样的错误。

Answer 1

解决办法是忽略sudo fuser -k 5000/tcp命令，直接运行gunicorn命令。

该命令应该启动服务器，以便 flask 应用程序在系统重启等情况下永远不会关闭。

不过，由于没有执行杀死它们的命令，因此将使用越来越多的端口。这可以是运行一天或一周一次的 cron 作业。不用担心这个命令会杀死 flask 应用程序，因为它会被 supervisord 恢复。

如何在同一个 supervisord 文件中发出杀死 gunicorn 和运行 gunicorn 的命令？

How do I give command for killing gunicorn and running gunicorn in the same file of supervisord?

python

nginx

flask

supervisord

gunicorn

如何在同一个 supervisord 文件中发出杀死 gunicorn 和 运行 gunicorn 的命令？

How do I give command for killing gunicorn and running gunicorn in the same file of supervisord?

python

nginx

flask

supervisord

gunicorn

如何在同一个 supervisord 文件中发出杀死 gunicorn 和运行 gunicorn 的命令？