#!/bin/sh
# 备份数据库
mkdir -p /data/backup/mysql
mkdir -p /data/backup/dbdata
# Mysql 用户名密码
MYSQL_USER=root
MYSQL_PASS=vrv123456.
BACKUP_DIR=/data/backup/mysql
DATA_DIR=/data/backup/dbdata
# 查询mysql中所有数据库名字
SQL_STRING="SELECT SCHEMA_NAME AS db FROM information_schema.SCHEMATA WHERE SCHEMA_NAME NOT IN (‘information_schema‘, ‘performance_schema‘);"
DBS=$(echo $SQL_STRING | mysql -u$MYSQL_USER -p$MYSQL_PASS -Bs)
# 当前日期
DATE=$(date -d ‘+0 days‘ +%Y%m%d%H%M)
# 打包名称
ZIP_NAME="mysql_"$DATE".gz"
# 删除一个月之前的数据库备份
find $BACKUP_DIR -name "mysql_*.gz" -type f -mtime +30 -exec rm {} \;
# 循环备份数据库
for DBNAME in $DBS
do
if [ ! -d ${DATA_DIR} ]; then
mkdir -p ${DATA_DIR}
fi
SQL_FILE=$DBNAME-$DATE".sql"
/usr/bin/mysqldump -u$MYSQL_USER -p$MYSQL_PASS $DBNAME > $DATA_DIR/$SQL_FILE
done
# tar打包所有sql文件
tar -czvPf $BACKUP_DIR/$ZIP_NAME $DATA_DIR
# 打包成功后删除sql文件
if [ $? = 0 ]; then
rm -r $DATA_DIR
fi原文：http://blog.51cto.com/chenhao6/2091053