mysql:5.6.29
xtrabackup:2.2.10
mysql数据目录:/data/mysql
mysql备份目录:/data/dbbak/full #确保有足够的磁盘空间
1、安装依赖
yum -y install libaio perl-Time-HiRes perl-DBD-MySQL perl-IO-Socket-SSL rsync.x86_64
2、安装xtrabackup
rpm -ivh percona-xtrabackup-2.2.10-1.el6.x86_64.rpm
3、在数据库创建备份账号
mysql> CREATE USER ‘bkpuser‘@‘localhost‘ IDENTIFIED BY ‘s3cret‘; mysql> GRANT RELOAD, LOCK TABLES, REPLICATION CLIENT,Process ON *.* TO ‘bkpuser‘@‘localhost‘; mysql> FLUSH PRIVILEGES;
4、使用xbstream备份
time innobackupex --user=bkpuser --password=s3cret --no-timestamp --defaults-file=/etc/my.cnf /data/dbbak/full --tmpdir=/data/dbbak/full -stream=xbstream|gzip - > /data/dbbak/full/full.xbstream.gz 161124 10:08:50 innobackupex: Connection to database server closed 161124 10:08:50 innobackupex: completed OK! real 0m37.613s user 0m28.506s sys 0m3.186s 解压 time gzip -d full.xbstream.gz real 0m26.678s user 0m13.405s sys 0m2.354s time xbstream -x <full.xbstream real 1m7.379s user 0m6.055s sys 0m11.173s
5、使用tar备份
time innobackupex --user=bkpuser --password=s3cret --no-timestamp --defaults-file=/etc/my.cnf /data/dbbak/full --tmpdir=/data/dbbak/full --stream=tar |gzip - > /data/dbbak/full/full.tar.gz innobackupex: You must use -i (--ignore-zeros) option for extraction of the tar stream. 161124 10:09:53 innobackupex: completed OK! real 0m34.934s user 0m26.500s sys 0m2.816s 解压 time tar -ixzvf /data/dbbak/full/full.tar.gz real 0m27.310s user 0m12.818s sys 0m3.735s 或者 gzip -d /data/dbbak/full/full.tar.gz tar -ixvf /data/dbbak/full/full.tar.gz 推荐使用tar -ixzvf /data/dbbak/full/full.tar.gz 解压
6、对比2种导出的文件大小
[[email protected]_166_129 full]# ll total 95232 -rw-r--r-- 1 root root 48704253 Nov 24 10:09 full.tar.gz -rw-r--r-- 1 root root 48809971 Nov 24 10:23 full.xbstream.gz
7、总结
使用--stream=tar备份,压缩、解压、已经压缩后的大小都优于-stream=xbstream,推荐使用--stream=tar方式压缩,解压时还可以配合tar。
时间: 2024-10-25 11:15:10