Xtrabackup backup MySQL

Xtrabackup backup MySQL
Mysqldump is based on a logical backup, which is equivalent to re-executing the SQL statement. Xtrabackup is equivalent to a physical backup of a file.

Installation dependencies
wget ftp://rpmfind.net/linux/dag/redhat/el6/en/x86_64/dag/RPMS/libev-4.15-1.el6.rf.x86_64.rpm
RPM-IVH libev-4.15-1.el6.rf.x86_64.rpm

Installing Xtrabackup
Yum Install http://www.percona.com/downloads/percona-release/redhat/0.1-4/percona-release-0.1-4.noarch.rpm
Yum List | grep Percona
Yum Install Percona-xtrabackup

All backup Optional Parameters--databases=xtra_test--host=192.168.200.51--password=123456#

Innobackupex--defaults-file=/etc/my.cnf--user=root/backup
Generate a fully-prepared file/backup/2018-01-23_21-16-32

Simulating write data
Insert into Travelrecord (id,user_id,traveldate,fee,days) VALUES (50004023, ' test ', 20160102,100,10);

Incremental backup based on full provisioning
Innobackupex--defaults-file=/etc/my.cnf--user=root--incremental--incremental-basedir=/backup/2018-01-23_ 21-16-32/backup/zengliang
Generate File/backup/zengliang/2018-01-23_21-25-20

Check for complete data consistency
Innobackupex--apply-log--redo-only/backup/2018-01-23_21-16-32

Apply Delta 1 to a full backup (last time no--fedo-only)
Innobackupex--apply-log/backup/2018-01-23_21-16-32--incremental-dir=/backup/zengliang/2018-01-23_21-25-20

Restore data
Service Mysqld Stop
Mv/var/lib/mysql/var/lib/mysqlold
Mkdir/var/lib/mysql
Innobackupex--defaults-file=/etc/my.cnf--user=root--copy-back/backup/2018-01-23_21-16-32
Chown-r Mysql:mysql/var/lib/mysql
Service mysqld Start
You can see that the data is in, and the data that is being written is also in.

Xtrabackup_binlog_info: Record the current latest log Position
Xtrabackup_binlog_pos_innodb:innodb Log postion
Xtrabackup_checkpoints: Store the starting position of the backup BEGINLSN and end position ENDLSN, incremental backup requires this lsn[incremental backup to see the changes from and to two values in this area
Xtrabackup_info: Some specific information logs for backup

Re-test to make a full backup recovery
Simulating write data
Insert into Travelrecord (id,user_id,traveldate,fee,days) VALUES (50004063, ' GoGoGo ', 20160102,100,10);
Innobackupex--defaults-file=/etc/my.cnf--user=root/backup
Generate File/backup/2018-01-23_21-44-19/

Check for complete data consistency
Innobackupex--apply-log--redo-only/backup/2018-01-23_21-44-19/
Restore data
Service Mysqld Stop
Mv/var/lib/mysql/var/lib/mysqlold1
Mkdir/var/lib/mysql
Innobackupex--defaults-file=/etc/my.cnf--user=root--copy-back/backup/2018-01-23_21-44-19/
Chown-r Mysql:mysql/var/lib/mysql
Service mysqld Start
You can see that the data is GoGoGo, and the data being written is also in.

Xtrabackup backup MySQL