mysqldump数据库备份示例

[root@localhost mdata]# cat mysql_backup.sh#!/bin/bashBACKUP_DIR=/mysql-backupDATE_DIR=`date +%F`[ -d $BACKUP_DIR/$DATE_DIR ] || mkdir $BACKUP_DIR/$DATE_DIR -p &>/dev/nulltime="$(date +"%Y-%m-%d")"USER=PASS=PORT=  #备份数据库，全量备份DB_LIST=$(/mdata/mysql/bin/mysql  -u$USER -p$PASS -P$PORT -s -e "show databases;" 2>/dev/null |egrep -v "Database|information_schema|mysql|performance_schema|sys")for DB in $DB_LIST; do   if ! /mdata/mysql/bin/mysqldump -u$USER -p$PASS $DB > $BACKUP_DIR/$DATE_DIR/$DB-${time}.sql 2>/dev/null;then   echo "$DATE_DIR   $DB-${time}.sql 备份失败" >> /mdata/mysql/mysqlbackup.log   fidone #删除2天前的备份DEL_DIR=`date -d "-2 days" +%F` [ -d $BACKUP_DIR/$DEL_DIR ] && rm -rf $BACKUP_DIR/$DEL_DIR#加入计划任务(echo "1 01 * * *  /mdata/mysql/mysql_backup.sh";crontab -l) |crontab

注：我这里是二进制安装，安装目录也可以自己修改为变量，只做参考