XtraBackup不停机不锁表热备mysql数据库
环境
- mysql版本 Server version: 5.6.42-log MySQL Community Server
- 数据库data目录 /data/mysql/
- binlog日志目录 /data/bin_logs/
- 备份目录 /data/backup/
完全备份脚本 (每日一次,00:10:00执行)
#!/bin/bash base_dir=”/data/backup/`date +%F`” [ -d ${base_dir} ] || mkdir ${base_dir} [ -d ${base_dir}/full_`date +%F` ] && exit 0 innobackupex –defaults-file=/etc/my.cnf –user=root –password=’123456′ –no-timestamp ${base_dir}/full_`date +%F` [ $? -eq 0 ] || echo “$(date +”%F_ %T”) 完全备份失败,请重新备份” >> /data/backup/backup.log
增量备份脚本 (每小时一次,xx:30:00执行)
#!/bin/bash base_dir=”/data/backup/`date +%F`” full_dir=”/data/backup/`date +%F`/full_`date +%F`” inc_dir=”${base_dir}/inc_`date +%H`” [ -d ${inc_dir} ] && exit 0 innobackupex –defaults-file=/etc/my.cnf –user=root –password=’123456′ –no-timestamp –incremental-basedir=${full_dir} –incremental ${inc_dir} &> /dev/null [ $? -eq 0 ] || echo “$(date +”%F_ %T”) ${inc_dir}增量备份失败,请重新备份” >> /data/backup/backup.log
一键还原脚本
#!/bin/bash base_dir=”/data/backup/`date +%F`” full_dir=”${base_dir}/full_`date +%F`” inc_dir=”${base_dir}/`ls ${base_dir} | tail -1`” cp -a ${base_dir} /data/backup/`date +”%F-%T”`_bak innobackupex –defaults-file=/etc/my.cnf –user=root –apply-log –redo-only ${full_dir} innobackupex –defaults-file=/etc/my.cnf –user=root –apply-log –redo-only ${full_dir} –incremental-dir=${inc_dir} service mysqld stop mv /data/mysql /data/mysql_bak`date +”%F_%T”` mkdir /data/mysql innobackupex –defaults-file=/etc/my.cnf –user=root –copy-back ${full_dir} chown -R mysql.mysql /data/mysql service mysqld start ###binlog日志还原 ###这里选择的是最后一个binlog日志,如果增量备份的一个小时内,有多个mysql-bin.0000xx生成,需要手动选择bin-log日志; ###还原执行13:30点后的所有sql命令 Hour=`basename ${inc_dir}|grep -o ‘[0-9]*’` binlog=`ls /data/bin_logs/|grep [0-9]|tail -1` mysqlbinlog –start-datetime=”`date +%F` ${Hour}:30:00″ /data/mysql/${binlog} | mysql -uroot -p ‘123456’ ###还原执行13:30-14:10之间的所有sql命令 ##mysqlbinlog –start-datetime=”2018-11-21 13:30:00″ –stop-datetime=”2012-03-15 14:10:00″ /data1/log/mysql/mysql-bin.000001 > /tmp/mysql_restore_030915.sql
计划任务
10 00 * * * /bin/bash /root/.scripts/full_back.sh 30 * * * * /bin/bash /root/.scripts/inc_back.sh