python脚本中的wkhtmltopdf不能与cronjob一起使用

Question

当我作为cronjob运行python脚本时，我得到了下面的错误。但是它是在手动执行的时候工作的。

Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/pdfkit/configuration.py", line 21, in __init__
    with open(self.wkhtmltopdf) as f:
FileNotFoundError: [Errno 2] No such file or directory: b''

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/ubuntu/aws_security_cost_audit.py", line 626, in <module>
  File "/home/ubuntu/aws_security_cost_audit.py", line 621, in main

  File "/home/ubuntu/aws_security_cost_audit.py", line 95, in html_to_pdf

  File "/usr/local/lib/python3.4/dist-packages/pdfkit/api.py", line 47, in from_file
    configuration=configuration, cover_first=cover_first)
  File "/usr/local/lib/python3.4/dist-packages/pdfkit/pdfkit.py", line 42, in __init__
    self.configuration = (Configuration() if configuration is None
  File "/usr/local/lib/python3.4/dist-packages/pdfkit/configuration.py", line 27, in __init__
    'https://github.com/JazzCore/python-pdfkit/wiki/Installing-wkhtmltopdf' % self.wkhtmltopdf)
OSError: No wkhtmltopdf executable found: "b''"
If this file exists please check that this process can read it. Otherwise please install wkhtmltopdf - https://github.com/JazzCore/python-pdfkit/wiki/Installing-wkhtmltopdf

文件/usr/local/bin/wkhtmltopdf是可执行文件，默认情况下会导出路径。

root@jump-box:/home/ubuntu# whereis wkhtmltopdf
wkhtmltopdf: /usr/local/bin/wkhtmltopdf

root@jump-box:/home/ubuntu# which wkhtmltopdf
/usr/local/bin/wkhtmltopdf

root@jump-box:/home/ubuntu# echo $PATH
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games

你能猜出问题出在哪里吗？

Answer 1

如果我添加此作业：

 * * * * * echo $PATH >> /ws/tmp.log 2>&1

然后：

> cat tmp.log
/usr/bin:/bin

因此，您可能希望将cronjob封装在一个脚本中，以便正确设置环境