Create backup directory
Create a backup Shell Script :
vim DatabaseName.sh #!/bin/bash
/usr/local/mysql/bin/mysqldump -uusername -ppassword DatabaseName > /home/backup/DatabaseName_$(date +%Y%m%d_%H%M%S).sql Compress the backup ： #!/bin/bash
/usr/local/mysql/bin/mysqldump -uusername -ppassword DatabaseName | gzip > /home/backup/DatabaseName_$(date +%Y%m%d_%H%M%S).sql.gz Be careful ：
hold username Replace with the actual user name ;
hold password Replace with the actual password ;
hold DatabaseName Replace with the actual database name ;
Add executable rights
chmod u+x DatabaseName.sh
Add scheduled tasks
01 3 * * * root/home/backup/DatabaseName.sh Means every day 3 I'm going to perform a backup
Crontab The format of
The first 1 One minute 1～59
The first 2 Train hours 1～23（0 Midnight ）
The first 3 Liege, 1～31
The first 4 Column month 1～12
The first 5 It's a week 0～6（0 Sunday ）
The first 6 Column command to run Here is crontab The format of ：
branch when Japan month week Commands to run Here you are crontab Some examples of file entries ： 30 21 * * * /usr/local/apache/bin/apachectl restart
The example above shows that every night 21:30 restart apache. 45 4 1,10,22 * * /usr/local/apache/bin/apachectl restart
The above example shows monthly 1、10、22 Japanese 4 : 45 restart apache. 10 1 * * 6,0 /usr/local/apache/bin/apachectl restart
The above example shows every Saturday 、 Sunday's 1 : 10 restart apache. 0,30 18-23 * * * /usr/local/apache/bin/apachectl restart
The above example shows that every day 18 : 00 to 23 : 00 Between every 30 Minutes to restart apache. 0 23 * * 6 /usr/local/apache/bin/apachectl restart
The above example shows that every Saturday 11 : 00 pm restart apache. 0 */1 * * * /usr/local/apache/bin/apachectl restart
Restart every hour apache #20160912 correct , thank @ Zhang Qiong's correction , I made a mistake ,*/1 and * It means the same thing , about / Usage of , You can refer to another article Crontab How to use the division sign in ？ 0 23-7/1 * * * /usr/local/apache/bin/apachectl restart
evening 11 Point to morning 7 Between points , Restart every hour apache 0 11 4 * mon-wed /usr/local/apache/bin/apachectl restart
Monthly 4 Day and Monday to Wednesday every week 11 Click restart apache 0 4 1 jan * /usr/local/apache/bin/apachectl restart
On January 1st 4 Click restart apache
Reference link ：https://mp.weixin.qq.com/s?__biz=MzA3OTgyMDcwNg==&mid=2650631459&idx=1&sn=63479c55ea99b9db09e40696373721c4&chksm=87a46feeb0d3e6f8c3562a314c962760a52c5064599791fa00976f21a91348724854325a1a5d&mpshare=1&scene=23&srcid=0823Ts1Ic9kGVSPzTLjLPPUR#rd
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