全量備份與增量備份實踐
1.1 全備備份與恢復全備實踐
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1、安裝Xtrabackup備份命令
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo
yum -y install perl perl-devel libaio libaio-develperl-Time-HiRes perl-DBD-MySQL
wget https://www.percona.com/downloads/XtraBackup/Percona-XtraBackup-2.4.4/binary/redhat/6/x86_64/percona-xtrabackup-24-2.4.4-1.el6.x86_64.rpm
yum -y install percona-xtrabackup-24-2.4.4-1.el6.x86_64.rpm
innobackupex ******
2、創建logs目錄並配置權限
mkdir /application/mysql/logs -p
chown -R /mysql.mysql /application/mysql/logs
3、配置/etc/my.cnf文件
[client]
user=root
password=oldboy123
[mysqld]
basedir= /application/mysql/
datadir= /application/mysql/data/
###########binlog############
log_bin = /application/mysql/logs/oldboy-bin
expire_logs_days = 7
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
[mysqld_safe]
log-error = /application/mysql/logs/oldboy.err
配置完成重啟生效：
[[email protected] data]#/etc/init.d/mysqld restart
Shutting down MySQL.. SUCCESS!
Starting MySQL... SUCCESS!
4、全被備份
mkdir /server/backup -p
innobackupex --defaults-file=/etc/my.cnf--user=root --password=oldboy123--socket=/application/mysql-5.6.34/tmp/mysql.sock --no-timestamp/server/backup/full
5、恢復數據前的準備（合並xtrabackup_log_file和備份的物理文件）
innobackupex --apply-log --use-memory=32M/server/backup/full/
停庫：
/etc/init.d/mysqld stop
lsof -i :3306
破壞數據：
cd /application/mysql/
mv data /opt/
恢復：
cp -a /server/backup/full/ /application/mysql/data
chown -R mysql.mysql /application/mysql/data
啟動：
/etc/init.d/mysqld start
mysql -e "select * from oldboy.test"
數據恢復成功。
1.2 實現增量備份及恢復：
環境準備：
du -sh /application/mysql/data/
free -m
cd /server/backup/
\rm -rf *
1、全量備份（周一0點）
innobackupex --defaults-file=/etc/my.cnf--user=root --password=oldboy123--socket=/application/mysql-5.6.34/tmp/mysql.sock --no-timestamp/server/backup/base_full
2、第一次增量備份（周二0點）
a.準備
use oldboy；
mysql> insert into test values(8,‘outman‘); 插入兩條數據
Query OK, 1 row affected (0.00 sec)
mysql> insert into test values(9,‘outgirl‘);
Query OK, 1 row affected (0.00 sec)
select *from test;
b.增量
innobackupex --defaults-file=/etc/my.cnf--user=root --password=oldboy123--socket=/application/mysql-5.6.34/tmp/mysql.sock --no-timestamp--incremental-basedir=/server/backup/base_full --incremental/server/backup/one_inc
2、第二次增量
mysql> use oldboy
mysql> insert into test values(10,‘two_inc1‘);
Query OK, 1 row affected (0.00 sec)
mysql> insert into test values(11,‘two_inc2‘);
Query OK, 1 row affected (0.00 sec)
innobackupex --defaults-file=/etc/my.cnf--user=root --password=oldboy123--socket=/application/mysql-5.6.34/tmp/mysql.sock --no-timestamp --parallel=3--incremental-basedir=/server/backup/one_inc/ --incremental/server/backup/two_inc
增量恢復：
innobackupex --apply-log --use-memory=32M--redo-only /server/backup/base_full/
innobackupex --apply-log --use-memory=32M--redo-only --incremental-dir=/server/backup/one_inc /server/backup/base_full/
innobackupex --apply-log --use-memory=32M--incremental-dir=/server/backup/two_inc /server/backup/base_full/正式數據文件
恢復過程：
[[email protected] backup]# /etc/init.d/mysqld stop
Shutting down MySQL.. SUCCESS!
[[email protected] backup]# cd /application/mysql
[[email protected] mysql]# mv data /tmp/
[[email protected] mysql]# /bin/cp -a/server/backup/base_full data
[[email protected] mysql]# chown -R mysql.mysql data
[[email protected] mysql]# /etc/init.d/mysqld start
Starting MySQL......... SUCCESS!
[[email protected] mysql]# mysql -e "select * fromoldboy.test;"
+----+----------+
| id | name |
+----+----------+
| 1 |oldboy |
| 2 |oldgirl |
| 3 |inca |
| 4 |zuma |
| 5 |kaka |
| 6 |bingbing |
| 7 |xiaoting |
| 8 |outman |
| 9 |outgirl |
| 10 | two_inc1 |
| 11 | two_inc2 |
+----+----------+
由此可以看到增量恢復數據恢復成功！
本文出自 “淺景塵” 博客，請務必保留此出處http://857803451.blog.51cto.com/12777961/1950243
全量備份與增量備份實踐