使用shell定时自动备份mysql数据库_MySQL
使用shell定时自动备份mysql数据库_MySQL
#!/bin/bash id="root" #用户名 pwd="123456" #密码 dbs="blog.ewsd.cn dangjian.ewsd.cn idc.ewsd.cn shangfa.ewsd.cn" #数据库名字的列表,多个数据库用空格分开 backuppath="/home/mysqlbackup" #保存备份的位置 day=30 #保留最近几天的备份 [ ! -d $backuppath ] &&mkdir -p $backuppath #判断备份目录是否存在,不存时新建目录。 cd $backuppath #转到备份目录,这句话可以省略。可以直接将路径到命令的也行。 backupname=mysql_$(date +%Y-%m-%d) #生成备份文件的名字的前缀,不带后缀。 for db in $dbs; #dbs是一个数据名字的集合。遍历所有的数据。 do mysqldump -u$id -p$pwd -S /tmp/mysql.sock $db >$backupname_$db.sql #备份单个数据为.sql文件。放到当前位置 if [ "$?" == "0" ] #$? 得到上一个shell命令的执行的返回值。0表示执行成功。其他表示错误。并将将结果写入到日志中。 then echo $(date +%Y-%m-%d)" $db mysqldump sucess">>mysql.log else echo $(date +%Y-%m-%d)" $db mysql dump failed">>mysql.log exit 0 fi done tar -czf $backupname.tar.gz *.sql #压缩所有sql文件 if [ "$?" == "0" ] then echo $(date +%Y-%m-%d)" tar sucess">>mysql.log else echo $(date +%Y-%m-%d)" tar failed">>mysql.log exit 0 fi rm -f *.sql #删除所有的sql文件 delname=mysql_$(date -d "$day day ago" +%Y-%m-%d).tar.gz #得到要删除的太旧的备份的名字。 rm -f $delname #删除文件。
将以上脚本加入定时计划crontab中即可,下载地址 注意脚本的执行权限设置。
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