Scenario:
you are working as MySQL or MariaDB admin and you need to schedule daily backups for a database.How will you schedule backup for MariaDB or MySQL database?
Solution:
Crontab can be used to schedule the backups for MySQL or MariaDB , Crontab entry consist of six below fields.
minute(s) hour(s) day(s) month(s) weekday(s) command(s)
| Field | Value | Description |
| minute | 0-59 | The exact minute that the command sequence executes |
| hour | 0-23 | The hour of the day that the command sequence executes |
| day | 31-Jan | The day of the month that the command sequence executes |
| month | 12-Jan | The month of the year that the command sequence executes |
| weekday | 0-6 | The day of the week that the command sequence executes (Sunday = 0, Monday = 1, Tuesday = 2, and so forth) |
| Command | special | Provide the Command you like to execute |
Let's make changes to our crontab file to run backup every minutes, if you like to run backup every minute, you will be providing * * * * * for all the time fields
open crontab file by sudo vim /etc/crontab
* * * * * root mysqldump -u [User]-p[Password] DBName> /BackupDirectory/DatabaseName_`date +\%m_\%d_\%YT\%H_\%M_\%S`.sql
Let's say if I am taking backup of abc database to mysqlbackup directory every minute, I will be using below command.
* * * * * root mysqldump -u root -pDBA321 abc > /mysqlbackup/abc_`date +\%m_\%d_\%YT\%H_\%M_\%S`.sql
Video Demo : How to schedule backup for MySQL database by using Crontab job