MySQL分库备份
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公司一直是全备+binlog,但是如果单个库出现问题怎么办,在进行完整恢复的话,第一会耽误时间,第二会影响其它数据库,第三如果数据量大,对于库的恢复也是问题,所以我提出了,除了全备,还要做分库备份,只要更灵活,出现问题,直接恢复单库(方便、快捷)
下面直接上脚本
1,将mysql自带库外的其他库进行备份
#!/bin/bash #--------------------------------------------------------- # $Name: Store_backup.sh # $Version: v1.0 # $Author: 邱月涛 # $organization: www.yi******.cn # $Create Date: 2017-06-03 # $Description: MySQL store Backup #用于MySQL 分库备份,并保留30天数据 #--------------------------------------------------------- #source /etc/init.d/functions DAY=`date +%F` BACK_DIR="/home/backup/mysqlbackup" DBUSER="root" DBPASSWD="你自己的password" BIN_PATH="/usr/bin" LOG="/home/backup/mysqlbackup/mysqlback.log" ## Close all tables and refresh log #### "$BIN_PATH"/mysql -u "$DBUSER" -p"$DBPASSWD" -e "flush logs" #"$BIN_PATH"/mysql -u "$DBUSER" -p"$DBPASSWD" -e "flush tables with read lock" echo "mysqldump start `date +%F\ %H\:%M\:%S`" >> "$LOG" ## Each backup database to the target location #### for i in `"$BIN_PATH"/mysql -u "$DBUSER" -p"$DBPASSWD" -e "show databases" |grep -vE "Database|information_schema"` do if [ ! -d "$BACK_DIR"/"$i" ]; then mkdir -p "$BACK_DIR"/"$i" fi "$BIN_PATH"/mysqldump -u "$DBUSER" -p"$DBPASSWD" --default-character-set=utf8 --opt --lock-tables -f --log-error="$LOG" "$i" > "$BACK_DIR"/"$i"/"$DAY".sql done echo "mysqldump stop `date +%F\ %H\:%M\:%S`" >> "$LOG" echo "" >>"$LOG" ## Delete 30 days ago backup files #### for RM in `"$BIN_PATH"/mysql -u "$DBUSER" -p"$DBPASSWD" -e "show databases" |grep -vE "Database|information_schema"` do rm -rf "$BACK_DIR"/"$RM"/$(date +%F --date=‘30 days ago‘).sql done
效果如下:
[[email protected] mysqlbackup]# tree -L 1 /home/backup/mysqlbackup /home/backup/mysqlbackup ├── luence ├── hpi ├── h ├── my ├── mysql ├── mysqlback.log ├── ypp └── tao
将脚本加入crontab定时任务即可;
[[email protected] mysqlbackup]# crontab -l 0 4 * * * /root/shell/mysqlbackup.sh
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