Preface In LINUX, periodic tasks are usually handled by the cron daemon process [ps -ef | grep cron]. Cron reads one or more configuration files that contain command lines and the times they are called. The cron configuration file is called "crontab", which is short for "cron table". Cron is a scheduled execution tool under Linux that can run jobs without human intervention.
Find the problem The thing is that there is a crontab like the following on your own service 10 0 * * * root echo 'xxx' >> zzz Those who are familiar with it know that it is executed at 00:10 at night and outputs xxx to the zzz file But the problem is that this crontab is not executed at 00:10! Instead, it is executed at 12:10 noon. The crontab execution time is inconsistent with the system time! ! ! ! I remember the server time zone was changed and it is now CST time zone. There is no reason not to execute it! I tried to google crontab time zone, and I found several similar examples. It turns out that crontab must be restarted manually after the time is modified /etc/init.d/crond restart
There is another situation where the time zone is divided into two, one is timezone and the other is localtime. Follow the following command to solve it cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime service crond restart Summarize The above is the full content of this article. I hope that the content of this article will have certain reference learning value for your study or work. If you have any questions, you can leave a message to communicate. Thank you for your support for 123WORDPRESS.COM. You may also be interested in:
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