mysql数据库实现双机备份

作为网站管理员一点要注意网站数据的安全，那怎么注意这个呢，解决方法之一就是数据库文件的备份
MySQL的本地备份和双机相互备份脚本：

首先，我们需要修改脚本进行必要的配置,然后以root用户执行。

◆1. 第一执行远程备份时先用 first参数.

◆2. 本地备份用local参数

◆3. 远程备份不用参数<注意1>

注意:

需要在另一主机上的MySQL用户里添加用户。

需要配置的地方:

# define host and mysql password

REMOTE_HOST=”” #远程主机名或IP

REMOTE_PASSWORD=”” #远程主机的mysql中的root@本地主机 密码.

# define database path

DB_PATH=”/var/lib/mysql” #本地mysql数据库路径

LOCAL_PASSWORD=”” #本地mysql root用户密码

DB_BACKUP_PATH=”/root/db_bk” #本地备份时数据保存的路径

NO_BACKUP_DB=”” 设置本地数据库中不想备份的数据库名,用空格隔开

直接下载

#!/bin/sh

# mysqldump_all.sh

# this scripts is used to backup MySQL database bettwen tow MySQL SERVER!

# define host and mysql password

REMOTE_HOST=””

REMOTE_PASSWORD=””

# define database path

DB_PATH=”/var/lib/mysql”

LOCAL_PASSWORD=””

DB_BACKUP_PATH=”/root/db_bk”

# define which database no back up, write db anme escap whit space!

# example;

# NO_BACKUP_DB=”yns test ps_note”

# this said that if db name is “yns” or “test” or “ps_note”, then not backup them!

NO_BACKUP_DB=””

# get the database name and process one by one

echo “Start to Backup…”;

#ls /var/lib/mysql > /tmp/mydb.all

if [ “$1” != “help” ]; then

for db in `ls $DB_PATH`; do

if_backup=”1″

if [ -d $DB_PATH/$db ] ; then

for noBackDB in $NO_BACKUP_DB ; do

if ( test “$db” = “$noBackDB” ); then

#echo -n “…”;

if_backup=””;

fi

done

if [ $if_backup ]; then

case “$1” in

first)

echo -n “Crate db [ $db ] on $REMOTE_HOST first!”

result=`mysqladmin -h $REMOTE_HOST –password=$REMOTE_PASSWORD create $db`

if [ ! $result ]; then

echo “…Done!”;

else

echo “…Fialed! check your configure plz!”;

echo “Remote host said: $result”;

exit

fi

;;

local)

# back up to localhost dir.

if [ ! -d $DB_BACKUP_PATH ]; then

mkdir $DB_BACKUP_PATH

fi

echo -n “[ $db ]….Backup to local$DB_BACKUP_PATH with gzip”;

if [ -e “$DB_BACKUP_PATH/$db.gz” ]; then

mv $DB_BACKUP_PATH/$db.gz $DB_BACKUP_PATH/$db.1.gz;

fi

mysqldump –password=Walte#Ming $db | gzip > $DB_BACKUP_PATH/$db.gz

echo “…[OK]”

;;

*)

# Do common Backup!

echo -n “[ $db ]…Do Backup! ====>> $REMOTE_HOST/$db”;

mysqldump –add-drop-table $db –password=$LOCAL_PASSWORD | mysql -h $REMOTE_HOST –password=$REMOTE_PASSWORD $db

echo “….[OK]”;

esac

else

echo “[ $db ]”;

echo “***This database set to Not backup!…Operation CANCELED!”;

fi

else

echo “[ $db ]”;

echo “***Warning! Not a DataBbase. Backup Canceled***”;

fi

done

else

echo “Usage: mysqldupm_all.sh [firs|local|help]”;

echo “Some question ask for href=”mailto:walteyh@sohu.com”;”>walteyh@sohu.com”;

fi

# Ended all backup opretion!

echo “”;

echo “Note: if there is come wrong message white MySQL,　you should check yourconfigure first!”;

exit