Linux Data Backup and recovery

1, the Linux system needs to back up the data

/root/Directory:

/home/directory:
/var/spool/mail/directory:

/etc/Directory: Other directories:

2, the installation of services data

Data that Apache needs to back up

configuration files, Web page home directories, log files

MySQL needs to back up the data = Source Package installed mysql:/usr/local/mysql/data/

RPM Package Installation of mysql:/var/lib/mysql/

3. Full backup, incremental backup, differential backup

(01), Backup command and dump [option] File name original file or directory after backup

Options:

-level: That's what we're talking about. 0-9 is a backup level

-F file Name: Specify the file name after backup

-U (Common): After the backup is successful, log the backup time in the/etc/dumpdates file

-V: Show more procedures

-j (Common): Call Bzlib Library Compressed backup file, in fact, is to compress the backup file into. bz2 format

-W: Displays the backup level and backup time of the partition allowing dump

Example: Backup partition

Dump-0uj-f/root/boot.bak.bz2/boot/

#备份命令. Perform a full backup first, and compress and update the backup time

Cat/etc/dumpdates

#查看备份时间文件

CP install.log/boot/

#复制日志文件到/boot partition

Dump-1uj-f/root/boot.bak1.bz2/boot/

#增量备份/boot partition, and compress dump–w #查询分区的备份时间及备份级别的

Example: Backing up a file or directory = = dump-0j-f [FileName]/root/etc.dump.bz2/etc/

#完全备份/etc/directory, use only 0 levels for full backups and no longer support incremental backups

(02), Restore command = restore [mode options] [options]

Mode options: There are four modes commonly used by the restore command, and these four modes cannot be mixed

-C: Compare backup data and actual data changes

-I: Enter interactive mode, manually select the files that need to be recovered

-T: view mode for viewing what data is in the backup file

-R: Restore Mode for data restore,

Options:

-F: Specifies the file name of the backup files

Linux Data Backup and recovery