Crontab在Amazon EC2服务器上不起作用 [英] Crontab is not working on Amazon EC2 server

问题描述

Crontab在Amazon EC2 Linux Server上不起作用.

Crontab is not working on Amazon EC2 Linux Server.

我已将以下代码保存在/etc/crontab文件中

I have saved below codes in /etc/crontab file

crontab
# For details see man 4 crontabs 
# Example of job definition: 
# .---------------- minute (0 - 59) 
# | .------------- hour (0 - 23) 
# | | .---------- day of month (1 - 31) 
# | | | .------- month (1 - 12) OR jan,feb,mar,apr ... 
# | | | | .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat 
# | | | | | 
# * * * * * user-name command to be executed 
* 10 * * * tar cvfpz /home/backup/web_$(date +%Y%m%d).tar.gz /home/web

我已经启动了crontab命令，但是此命令不起作用.

I have started crontab command already, but this one didn't work.

我也将该行保存在"crontab -e"中，但是cron无法正常工作.

I also have saved this line in "crontab -e" too, but cron won't work.

* 10 * * * tar cvfpz /home/backup/web_$(date +%Y%m%d).tar.gz /home/web

有没有像我一样经历过的人?

Is there anyone who had same experience like me?

谢谢.

推荐答案

我最近开始在ec2实例上使用Amazon的Linux发行版，在尝试了cron的所有功能之后，我需要的是:
sudo service crond start
crontab -e
这使我可以将cron作业设置为"ec2-user"，而无需指定用户.例如:
0 12 * * * python3 example.py
实际上，在此处指定用户会阻止其运行.

I recently began using Amazon's linux distro on ec2 instances and after trying all kinds of things for cron all I needed was:
sudo service crond start
crontab -e
This allowed me to set a cron job as "ec2-user" without specifying the user. For example:
0 12 * * * python3 example.py
In fact, specifying a user here prevented it from running.

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