使用cron配置
例：飞牛配置每天03:02重启
Bash
su #root登录
vi /etc/crontab在配置文件的最后一行添加：2 3 * * * root reboot，如下方代码所示
Bash
# /etc/crontab: system-wide crontab
# Unlike any other crontab you don't have to run the `crontab'
# command to install the new version when you edit this file
# and files in /etc/cron.d. These files also have username fields,
# that none of the other crontabs do.
SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
# 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
17 * * * * root cd / && run-parts --report /etc/cron.hourly
25 6 * * * root test -x /usr/sbin/anacron || { cd / && run-parts --report /etc/cron.daily; }
47 6 * * 7 root test -x /usr/sbin/anacron || { cd / && run-parts --report /etc/cron.weekly; }
52 6 1 * * root test -x /usr/sbin/anacron || { cd / && run-parts --report /etc/cron.monthly; }
#
2 3 * * * root reboot #添加此行，上方"Example of job definition"有其对应的含义Bash
systemctl restart cron
systemctl status cron/etc中每个cron文件夹代表含义
Bash
/etc/cron.d/ #存放系统级别额外crontab配置
/etc/cron.hourly/
/etc/cron.daily/
/etc/cron.weekly/
/etc/cron.monthly/ #cron会分别每小时、每天、每周、每月自动运行这些目录中的脚本 /etc/crontab中有记录参考资料
