无法获取PHP cron脚本运行 [英] Cannot get PHP cron script to run

问题描述

我有一个PHP脚本，我需要运行每一分钟。我已经确保脚本从命令行工作，我使用绝对路径，以避免任何环境问题：

I have a PHP script that I need to run every minute. I have made sure that the script works from the command line, and I'm using absolute paths to avoid any environment issues:

/usr/bin/php -q /var/www/myapp/services/myservice.php

手动从命令行以root身份运行正常工作，正如我可以从我的脚本写入的日志文件中看到的。

Manually running that as root from the command line works fine, as I can see from the log file that my script writes to. To be sure, the script has execute permissions as well.

但是，当在cron中放置完全相同的命令时：

However, when placing the same exact command in a cron:

* * * * * /usr/bin/php -q /var/www/myapp/services/myservice.php

它不运行或至少出现这样。我试着将输出重定向到另一个日志文件：

It does not run or at least it appear so. I've tried redirecting the output to another log file too:

* * * * * /usr/bin/php -q /var/www/myapp/services/myservice.php >> /mylog.log 2>&1

我没有任何迹象表明脚本被运行。我想它不，但我不知道还有什么要寻找。我甚至重新启动了cron守护进程。

Still nothing. I have no indication whatsoever of the script being ran. I guess it doesn't, but I have no idea what else to look for. I even restarted the cron daemon.

我知道在StackOverflow上有类似的问题，但是没有一个答案是我的解决方案。

I know there are similar questions on StackOverflow, but none of the answers turned out to be a solution for me. This is literally driving me crazy, I will greatly appreciate any help.

推荐答案

通常有很多事情你需要可以将可执行文件从命令行移动到cron作业。

There are usually a significant number of things you need to do to move an executable from the command line to a cron job.

默认情况下，cron作业获得一个最小的环境，几乎肯定不会有完整的路径主机的其他环境变量）您的登录会话有。

By default, cron jobs get a minimal environment which will almost certainly not have the full path (and a host of other environment variables) that your login sessions have. You may also not be in the same directory (as you have discovered).

我想做的是执行：

env | sed 's/^/export /' >$HOME/cron.env

以获得完整的环境，然后确保我的cron作业在尝试做真正的工作之前执行该脚本。生成的脚本可能需要少量整理（引用，删除 _ 和 PWD 等临时环境变量，因此

from a login session to get the full environment, then make sure that my cron jobs execute that script before attempting to do the real work. The resultant script may need a small amount of tidying up (quoting, removing transient environment variables like _ and PWD and so forth).

这样我可以确定登录和cron环境是一样的。

That way I can be sure that the login and cron environments are identical.

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