每小时cron作业未运行 [英] Hourly cron job did not run

问题描述

我用 crontab -e 打开了我的crontab文件。然后我将它添加到我的crontab：

I opened my crontab file with crontab -e. Then I added this to my crontab:

SHELL=/bin/bash

@hourly /home/ec2-user/utilities/create-snapshots.sh

然后我保存了该文件。大约一个小时后，显示cron日志：

Then I saved the file. After about an hour, the cron logs displayed:

CROND[1876]: (ec2-user) CMD (/home/ec2-user/utilities/create-snapshots.sh)
CROND[1877]: (root) CMD (/usr/lib64/sa/sa1 -S DISK 1 1)
CROND[1892]: (root) CMD (run-parts /etc/cron.hourly)
run-parts(/etc/cron.hourly)[1892]: starting 0anacron
run-parts(/etc/cron.hourly)[1901]: finished 0anacron

但是我知道命令 / home / ec2 -user / utilities / create-snapshots.sh 实际上没有运行，因为它会创建我的数据库的快照，而它没有。运行命令 /home/ec2-user/utilities/create-snapshots.sh 可以直接在终端中运行。

However I know that the command /home/ec2-user/utilities/create-snapshots.sh was not actually run because it would have created snapshots of my database, which it did not. Running the command /home/ec2-user/utilities/create-snapshots.sh works if I run it directly in the terminal.

我如何让cron每小时运行那个命令？

How can I get cron to run that command hourly?

推荐答案

我的心理调试能力告诉我， code> create-shapshots.sh 脚本运行，但由于环境变量问题（可能 PATH ）。 Cron通常使用清理过的环境运行命令，其中的东西比通常在shell提示符下的东西要少。

My psychic debugging powers tell me that the create-shapshots.sh script was run, but it failed because of an environment variable problem (possibly PATH). Cron normally runs commands with a cleaned-out environment, with much less stuff than what you normally have at a shell prompt.

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