Linux下Mysql每天自动备份

新建目录

mkdir -p /data/mysqlbak/data
mkdir -p /data/mysqlbak/scripts
mkdir -p /data/mysqlbak/logs

创建备份脚本

cd /data/mysqlbak/scripts
vi backup.sh
#!/bin/bash
#备份目录
BACKUP_ROOT=/data/mysqlbak
BACKUP_FILEDIR=$BACKUP_ROOT/data
#当前日期
DATE=$(date +%Y%m%d)
######备份######
#查询所有数据库
#-uroot -p123456表示使用root账号执行命令，且root账号的密码为:123456
DATABASES=$(mysql -uroot -p123456 -e "show databases" | grep -Ev "Database|sys|information_schema|performance_schema|mysql")
#循环数据库进行备份
for db in $DATABASES
do
echo
echo ----------$BACKUP_FILEDIR/${db}_$DATE.sql.gz BEGIN----------
mysqldump -uroot -p123456 --default-character-set=utf8 -q --lock-all-tables --flush-logs -E -R --triggers -B ${db} | gzip > $BACKUP_FILEDIR/${db}_$DATE.sql.gz
echo ----------$BACKUP_FILEDIR/${db}_$DATE.sql.gz COMPLETE----------
echo
done
echo "done"

设置脚本的执行权限

chmod 777 backup.sh

将备份操作加入到定时任务(每天凌晨2点定时执行)

crontab -e
00 2 * * * /data/mysqlbak/scripts/backup.sh > data/mysqlbak/logs/backup.log 2>&1

创建删除脚本(定时删除7天前的备份数据)

vi backup_clean.sh
#!/bin/bash
echo ----------CLEAN BEGIN----------
find /data/mysqlbak/data -mtime +7 -name "*.gz" -exec rm -rf {} \;
echo ----------CLEAN COMPLETE----------

设置脚本的执行权限

chmod 777 backup_clean.sh

将删除操作加入到定时任务(每天凌晨1点定时执行)

00 1 * * * /data/mysqlbak/scripts/backup_clean.sh > /data/mysqlbak/logs/backup_full_clean.log 2>&1

查看定时任务

crontab -l

如果需要备份到另外一台机器，可以备份完scp到另外一台机器

首先服务器需要安装export，yum安装：

yum  install expect

或者源码安装，参考

https://www.cnblogs.com/operationhome/p/9154055.html

脚本修改：

#!/bin/bash
#备份目录
BACKUP_ROOT=/data/mysqlbak
BACKUP_FILEDIR=$BACKUP_ROOT/data
#当前日期
DATE=$(date +%Y%m%d)
######备份######
#查询所有数据库
#-uroot -p123456表示使用root账号执行命令，且root账号的密码为:123456
DATABASES=$(mysql -uroot -p123456 -e "show databases" | grep -Ev "Database|sys|information_schema|performance_schema|mysql")
#循环数据库进行备份
for db in $DATABASES
do
echo
echo ----------$BACKUP_FILEDIR/${db}_$DATE.sql.gz BEGIN----------
mysqldump -uroot -p123456 --default-character-set=utf8 -q --lock-all-tables --flush-logs -E -R --triggers -B ${db} | gzip > $BACKUP_FILEDIR/${db}_$DATE.sql.gz
echo ----------$BACKUP_FILEDIR/${db}_$DATE.sql.gz COMPLETE----------
echo ----------scp 226  begin----------
expect -c "
    spawn scp -r /data/mysqlbak/data/${db}_$DATE.sql.gz root@xxx.xxx.xxx.226:/data/mysqlbak/data225/
    expect {
        \"*assword\" {set timeout 300; send \"此处是scp的密码\r\"; exp_continue;}
        \"yes/no\" {send \"yes\r\";}
    }
expect eof"
echo ----------scp 226  end----------
echo
done
echo "done"