CentOS下mysql备份脚本(mysqldump)

 #!/bin/bash #全备方式，一般在从机上执行，适用于小中型mysql数据库 #删除15天以前备份 #作者：fafu_li #时间：2015.08.10 source /etc/profile #加载系统环境变量 source ~/.bash_profile #加载用户环境变量 set -o nounset #引用未初始化变量时退出 #set -o errexit #执行shell命令遇到错误时退出 user="root" password="123456" host="localhost" port="3306" #需备份的数据库，数组 db=("test") #备份时加锁方式， #MyISAM为锁表--lock-all-tables， #InnoDB为锁行--single-transaction lock="--single-transaction" mysql_path="/usr/local/mysql" backup_path="${mysql_path}/backup" date=$(date +%Y-%m-%d_%H-%M-%S) day=15 backup_log="${mysql_path}/backup.log" #建立备份目录 if [ ! -e $backup_path ];then mkdir -p $backup_path fi #删除以前备份 find $backup_path -type f -mtime +$day -exec rm -rf {} \; > /dev/null 2>&1 echo "开始备份数据库：${db[*]}" #备份并压缩 backup_sql(){ dbname=$1 backup_name="${dbname}_${date}.sql" #-R备份存储过程，函数，触发器 mysqldump -h $host -P $port -u $user -p$password $lock --default-character-set=utf8 --flush-logs -R $dbname > $backup_path/$backup_name if [[ $? == 0 ]];then cd $backup_path tar zcpvf $backup_name.tar.gz $backup_name size=$(du $backup_name.tar.gz -sh | awk '{print $1}') rm -rf $backup_name echo "$date 备份 $dbname($size) 成功 " else cd $backup_path rm -rf $backup_name echo "$date 备份 $dbname 失败 " fi } #循环备份 length=${#db[@]} for (( i = 0; i < $length; i++ )); do backup_sql ${db[$i]} >> $backup_log 2>&1 done echo "备份结束,结果查看 $backup_log" du $backup_path/*$date* -sh | awk '{print "文件:" $2 ",大小:" $1}'