全量备份
1）全量备份恢复
###解压全量备份文件到指定目录/rds/mysql
xbstream -x -C /rds/mysql < full_backup.xbstream
innobackupex --decompress --parallel=6 --compress-threads=6 /rds/mysql
#应用日志
innobackupex --defaults-file=/rds/mysql/backup-my.cnf --use-memory=256M --apply-log /rds/mysql
#修改数据文件目录
vim /etc/mysql/mysql.conf.d/mysqld.conf
#修改数据目录权限
chown -R -f mysql:mysql /rds/mysql
# 启动mysql服务
service mysqld restart
2）全量+增量恢复
# 1. 恢复全备
xbstream -x -C /rds/mysql < full_backup.xbstream
innobackupex --decompress --parallel=6 --compress-threads=6 /rds/mysql
innobackupex --defaults-file=/rds/mysql/backup-my.cnf --use-memory=256M --apply-log /rds/mysql --redo-only
# 2. 恢复增备，如果有多个增备，重复这一步，注意修改/tmp/increase_backup的增备临时目录
xbstream -x -C /tmp/increase_backup < increase_backup.xbstream
innobackupex --decompress --parallel=6 --compress-threads=6 /tmp/increase_backup
innobackupex --defaults-file=/rds/mysql/backup-my.cnf --use-memory=256M --apply-log /rds/mysql --incremental-dir=/tmp/increase_backup --redo-only
rm -rf /tmp/increase_backup
# 3. apply log
innobackupex --defaults-file=/rds/mysql/backup-my.cnf --use-memory=256M --apply-log /rds/mysql
chown -R -f mysql:mysql /rds/mysql
# 4. 启动mysql服务
service mysqld restart
3）全量+增量指定库表恢复
# 2. 恢复增备，如果有多个增备，重复这一步，注意修改/tmp/increase_backup的增备临时目录
xbstream -x -C /tmp/increase_backup < increase_backup.xbstream
innobackupex --decompress --parallel=6 --compress-threads=6 /tmp/increase_backup
innobackupex --defaults-file=/rds/mysql/backup-my.cnf --use-memory=256M --apply-log /rds/mysql --incremental-dir=/tmp/increase_backup --redo-only
rm -rf /tmp/increase_backup
# 3. apply log
innobackupex --defaults-file=/rds/mysql/backup-my.cnf --use-memory=256M --apply-log /rds/mysql
#解压并追加日志，以上完成后，删除原有库表目录相应的表frm idb文件,拷贝/rds/mysql中恢复后的库表文件
#并修改文件权限chown +R mysql:mysql /rds/mysql
#完成以上步骤即可恢复数据
4）如果全量+增量未成达到要求，需要在全量+增量备份文件恢复的同时从binlog追加后续的增量数据
数据库备份
#! /bin/bash
# author linsheng
# version 0.0.1
# email linsheng@viomi.com.cn
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
export PATH
backup_dir="/dbs/backup/mysql"
restore_dir="$2"
mysql_cnf="/etc/mysql/mysql.conf.d/mysqld.cnf"
mysql_user="user"
mysql_password="password"
mysql_port=3306
mysql_sock=""
backup_application="/usr/bin/innobackupex"
backup_day_month=$(date +%F)
thread_count=16
backup_day_minute=$(date +%H)-$(date +%M)
echo $backup_day_month
echo $backup_day_minute
return_value=0
if [ $# -lt "1" ] ; then
echo "arg error!"
fi
#全量备份
full_backup(){
#判断每天备份目录，如果不存在就创建目录并备份
if [ ! -d ${backup_dir}/$backup_day_month/full ]; then
mkdir ${backup_dir}/$backup_day_month/full -p
${backup_application} --defaults-file=${mysql_cnf} --no-timestamp --user=${mysql_user} --password=${mysql_password} --port=${mysql_port} --parallel=$thread_count --compress --compress-threads=$thread_count --stream=xbstream --extra-lsndir=${backup_dir}/$backup_day_month/full/xtrabackup_info ${backup_dir}/$backup_day_month/full/base.xbstream
if [ `echo $?` -ne ${return_value} ]; then
echo "Backup Error" > ${backup_dir}/$backup_day_month/full/MySQL_Innodb_backupex.log
fi
fi
}
#增量备份
incremental_backup(){
echo "begin incremental_backup..."
if [ ! -d ${backup_dir}/$backup_day_month/full ]; then
full_backup
fi
####如果不存在增量则添加增量
if [ ! -d ${backup_dir}/$backup_day_month/incremental/lsndir ]; then
mkdir ${backup_dir}/$backup_day_month/incremental/lsndir -p
${backup_application} --defaults-file=${mysql_cnf} --no-timestamp --user=${mysql_user} --password=${mysql_password} --port=${mysql_port} --parallel=$thread_count --compress --compress-threads=$thread_count --stream=xbstream --extra-lsndir=${backup_dir}/$backup_day_month/incremental/lsndir --incremental --incremental-basedir=${backup_dir}/$backup_day_month/full/xtrabackup_info base>${backup_dir}/$backup_day_month/incremental/$backup_day_minute/incre.xbstream
if [ `echo $?` -ne ${return_value} ]; then
echo "Backup Error" > ${backup_dir}/$backup_day_month/incremental/MySQL_Innodb_backupex.log
fi
else
###如果存在则在增量基础上添加增量
# mkdir ${backup_day_minute}_incremental
mv ${backup_dir}/$backup_day_month/incremental/lsndir ${backup_dir}/$backup_day_month/incremental/${backup_day_minute}_incremental
mkdir ${backup_dir}/$backup_day_month/incremental/$backup_day_minute/
${backup_application} --defaults-file=${mysql_cnf} --no-timestamp --user=${mysql_user} --password=${mysql_password} --port=${mysql_port} --parallel=$thread_count --compress --compress-threads=$thread_count --stream=xbstream --extra-lsndir=${backup_dir}/$backup_day_month/incremental/lsndir --incremental --incremental-basedir=${backup_dir}/$backup_day_month/incremental/${backup_day_minute}_incremental base>${backup_dir}/$backup_day_month/incremental/$backup_day_minute/incre.xbstream
if [ `echo $?` -ne ${return_value} ]; then
echo "Backup Error" > ${backup_dir}/$backup_day_month/incremental/MySQL_Innodb_backupex.log
fi
fi
}
case $1 in
Backup)
if [ ! -d ${backup_dir}/$backup_day_month/full ]; then
full_backup
else
incremental_backup
fi
;;
*)
echo "Usage:$0(Backup|recovery)"
;;
esac
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