Cron和virtualenv [英] Cron and virtualenv

问题描述

我试图从cron运行Django管理命令。我使用virtualenv保持我的项目沙箱。

I am trying to run a Django management command from cron. I am using virtualenv to keep my project sandboxed.

我在这里和其他地方看到示例运行管理命令从virtualenv的像：

I have seen examples here and elsewhere that show running management commands from within virtualenv's like:

0 3 * * * source /home/user/project/env/bin/activate && /home/user/project/manage.py command arg

但是，即使syslog显示一个条目任务应该已经启动，此任务从未实际运行（脚本的日志文件为空）。如果我从shell手动运行行，它的工作原理。

However, even though syslog shows an entry when the task should have started, this task never actually runs (the log file for the script is empty). If I run the line manually from the shell, it works as expected.

我现在可以通过cron运行命令的唯一方法是将命令断开，并将它们放在一个笨拙的bash封装脚本中：

The only way I can currently get the command to run via cron, is to break the commands up and put them in a dumb bash wrapper script:

#!/bin/sh
source /home/user/project/env/bin/activate
cd /home/user/project/
./manage.py command arg

请告诉我是。

感谢

编辑：

ars想出了一个有效的命令组合：

ars came up with a working combination of commands:

0 3 * * * cd /home/user/project && /home/user/project/env/bin/python /home/user/project/manage.py command arg

至少在我的情况下，调用virtualenv的激活脚本什么也没做。

At least in my case, invoking the activate script for the virtualenv did nothing. This works, so on with the show.

推荐答案

你应该能够通过使用 python 在您的虚拟环境中：

You should be able to do this by using the python in your virtual environment:

/home/my/virtual/bin/python /home/my/project/manage.py command arg

编辑：如果你的django项目不在PYTHONPATH ，那么您需要切换到正确的目录：

If your django project isn't in the PYTHONPATH, then you'll need to switch to the right directory:

cd /home/my/project && /home/my/virtual/bin/python ...

您也可以尝试记录失败来自cron：

You can also try to log the failure from cron:

cd /home/my/project && /home/my/virtual/bin/python /home/my/project/manage.py > /tmp/cronlog.txt 2>&1

在您的 manage.py 脚本中：

#!/home/my/virtual/bin/python

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