Mysql工作那些事儿

1.对mysql数据库的操作，在更改配置文件、增删改查数据之前，先做好全库脚本导出备份以及物理文件导出的工作，以防操作出错。如果操作出错，可以很快回滚数据库到最初状态。

2.设置复杂的root用户密码，并且进行正确的授权，并且flush privileges;进行刷新权限。如果root密码丢失，可以修改root用户的mysql密码。但是数据库会要求重启。

3.选择好mysql的客户端连接工具，比如navicat或者SQL Yog。

4.设置好正确的备份策略，以及备份脚本，脚本如下：

 [root@localhostXXX]# more mysqlfull.sh

#!/bin/sh

# Name:mysqlFullBackup.sh

# PS:MySQL DataBase Full Backup.

# Use mysqldump --help get more detail.

scriptsDir=`pwd`

mysqlDir=/var/lib/mysql

user=root

userPWD=XXXXXX

dataBackupDir=/usr/local/sdc/backup/mysqlbackup

eMailFile=$dataBackupDir/email.txt

eMail=XXX@XXX.com

logFile=$dataBackupDir/mysqlbackup.log

DATE=`date -I`

echo "" > $eMailFile

echo $(date +"%y-%m-%d %H:%M:%S")>>$eMailFile

cd $dataBackupDir

dumpFile=mysql_$DATE.sql

GZDumpFile=mysql_$DATE.sql.tar.gz

#mysqldump -u$user -p$userPWD --opt--default-character-set=utf8 --extended-insert=false --triggers -R --hex-blob--all-databases --flush-logs --delete-master-logs --delete-master-logs -x >$dumpFile

mysqldump -u$user -p$userPWD--all-databases > $dumpFile

#if [[ $? == 0 ]]

if [ "$?" = "0" ]

then

       tar czf $GZDumpFile $dumpFile >> $eMailFile 2>&1

       echo "BackupFileName:$GZDumpFile" >> $eMailFile

       echo "DataBase Backup Success!" >> $eMailFile

       rm -f $dumpFile

# Delete daily backup files.

#      cd $dataBackupDir/daily

#      rm -f *

# Delete old backup files(mtime>2).

#$scriptsDir/rmBackup.sh

find $dataBackupDir -type f -mtime +33 -execrm {} \;

# Move Backup Files To Backup Server.

#      if (( !$? )); then

#      echo "Move Backup Files To Backup Server Success!" >>$eMailFile

#      else

#      echo "Move Backup Files To Backup Server Fail!" >>$eMailFile

#      fi

else

echo "DataBase Backup Fail!">> $emailFile

fi

echo"--------------------------------------------------------" >>$logFile

cat $eMailFile >> $logFile

#cat $eMailFile | mail -s "MySQLBackup" $eMail

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