uWSGI python子进程chrome/firefox失败 [英] uWSGI python subprocess chrome/firefox failed

问题描述

我在使用nginx的uWSGI下有一个python flask应用程序. python代码调用subprocess.Popen()来运行浏览器(即Firefox，Chrome)，但uWSGI日志显示错误. 该错误与linux(ubuntu)标准命令有关，即readlink，which，cat和其他命令.

I have a python flask app under uWSGI served using nginx. The python code calls subprocess.Popen() to run a browser (i.e. Firefox, Chrome) but the uWSGI log shows errors. The error is related to linux(ubuntu) standard commands i.e. readlink, which, cat and others.

我怀疑这与用户访问权限有关，但不确定. uWSGI服务使用我的用户和www-data组运行.

I am suspecting this is user access related, but not sure. The uWSGI service runs using my user and www-data group.

Python代码

import subprocess

@app.route('/api/check/version', methods=['POST'])
def check_version():
    pid = subprocess.Popen(['/usr/bin/firefox', '--version'], stdout=subprocess.PIPE)
    #pid = subprocess.Popen(['/usr/bin/google-chrome', '--version'], stdout=subprocess.PIPE)
    data = pid.communicate()
    return  data

if __name__ == "__main__":
    check_version()

uWSGI日志

**in case of doing Popen for /usr/bin/firefox
/usr/bin/firefox: 1: /usr/bin/firefox: which: not found

**in case of doing Popen for /usr/bin/google-chrome
/usr/bin/google-chrome-stable: line 8: readlink: command not found
/usr/bin/google-chrome-stable: line 10: dirname: command not found
/usr/bin/google-chrome-stable: line 46: exec: cat: not found
/usr/bin/google-chrome-stable: line 45: exec: cat: not found

uWSGI服务配置

[Unit]
Description=uWSGI instance to serve myproject
After=network.target

[Service]
User=myuser
Group=www-data
WorkingDirectory=/home/gbadmin/myproject
Environment="PATH=/home/gbadmin/myproject/myprojectenv/bin"
ExecStart=/home/gbadmin/myproject/myprojectenv/bin/uwsgi --ini myproject.ini

[Install]
WantedBy=multi-user.target

推荐答案

您为PATH提供了太多限制:

Environment="PATH=/home/gbadmin/myproject/myprojectenv/bin"

有问题的命令通常出现在/bin或/usr/bin中，将它们添加到path变量中可能会解决您的问题

The missing commands in question are usually present in /bin or /usr/bin, adding these to the path variable will likely solve your problem

Environment="PATH=/home/gbadmin/myproject/myprojectenv/bin:/usr/bin:/bin"

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