备份所有MySql数据库的Shell脚本

#!/bin/bash
# 备份 mysql数据库
# 将mysql备份到目录 /backup 或自定义的目录中
 
MyUSER="SET-MYSQL-USER-NAME" # USERNAME
MyPASS="SET-PASSWORD"       # PASSWORD
MyHOST="localhost"          # Hostname
 
# 获取相关命令的绝对路径
MYSQL="$(which mysql)"
MYSQLDUMP="$(which mysqldump)"
CHOWN="$(which chown)"
CHMOD="$(which chmod)"
GZIP="$(which gzip)"
 
# 备份文件保存的目录，请根据需要修改
DEST="/backup"
 
# mysql数据库保存的目录
MBD="$DEST/mysql"
 
# 主机名
HOST="$(hostname)"
 
# 获取日期
NOW="$(date +"%d-%m-%Y")"
 
# File to store current backup file
FILE=""
# Store list of databases
DBS=""
 
# 备份时要忽略的数据库
IGGY="test"
 
[ ! -d $MBD ] && mkdir -p $MBD || :
 
# Only root can access it!
$CHOWN 0.0 -R $DEST
$CHMOD 0600 $DEST
 
# 获取所有数据库的清单
DBS="$($MYSQL -u $MyUSER -h $MyHOST -p$MyPASS -Bse 'show databases')"

#开始备份
for db in $DBS
do
    skipdb=-1
    if [ "$IGGY" != "" ];
    then
 for i in $IGGY
 do
     [ "$db" == "$i" ] && skipdb=1 || :
 done
    fi
 
    if [ "$skipdb" == "-1" ] ; then
 FILE="$MBD/$db.$HOST.$NOW.gz"
 # do all inone job in pipe,
 # connect to mysql using mysqldump for select mysql database
 # and pipe it out to gz file in backup dir :)
        $MYSQLDUMP -u $MyUSER -h $MyHOST -p$MyPASS $db | $GZIP -9 > $FILE
    fi
done