CentOS automatically backs up Web sites using crontab timed tasks

Do not need any professional software, use CentOS's own commands and services to complete the daily automatic backup.
Here's a common backup method:

1. File backup

Compress files for backup using the TAR command:
#tar-ZCVF backup.tar.gz Dir1
Dir1 for the directory or file to be backed up
Backup RESTORE command:
#tar-ZXVF backup.tar.gz

2. Database backup

Most database systems have commands to support backup and recovery of databases. For example, MySQL, the database backup command is:

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#mysqldump-host=dbhost-user=username-password=password dbname > Db.dump

The restore command for the MySQL backup is:

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#mysql-host=dbhost-user=username-password=password dbname < Db.dump

3. Automatic Task Scheduled backup

Use the above command to write a backup script (such as/home/backup/backup.sh), and then use the CRONTAB-E command to edit the timed task, the following is the day 01:30 automatic backup example

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* * * */home/backup/backup.sh

4. Name of backup file

You can automatically add a backup time to a daily backup file name, and here is a sample script:

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#! /bin/bash Curr= ' Date +%y%m%d%h%m%s ' Tar czvf backup_$curr.tar.gz dir1 dir2 Mysqldump-host=dbhost-user=username-password=password dbname > Db_$curr.dump

Note that the system does not have crontab class Oh, we need a simple installation

Install Crontab:

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[Root@centos ~]# Yum Install Vixie-cron [Root@centos ~]# Yum Install Crontabs

Description
Vixie-cron packages are Cron's main programs;
The Crontabs package is a program used to install, uninstall, or enumerate the tables used to drive the cron daemon.

Cron is a built-in service for Linux, but it does not automatically get up, you can start and close the service in the following ways:

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/sbin/service Crond Start #启动服务 /sbin/service Crond Stop #关闭服务 /sbin/service Crond Restart #重启服务 /sbin/service Crond Reload #重新载入配置

To view the Crontab service status:

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Service Crond Status

To manually start the Crontab service:

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Service Crond Start