Shell脚本自动备份MySQL到FTP并定期清理过期备份

# Get hostname
HOST="$(hostname)"
 
# Get data in dd-mm-yyyy format
NOW="$(date +%d-%m-%Y)"
OLD="$(date -d last-month +%d-%m-%Y)"
 
# File to store current backup file
FILE=""
# Store list of databases
DBS=""
 
# DO NOT BACKUP these databases
IGGY="test"
 
rm -rf $MBD
 
[ ! -d $MBD ] && mkdir -p $MBD || :
 
# Only root can access it!
$CHOWN 0.0 -R $DEST
$CHMOD 0600 $DEST
 
# Get all database list first
DBS="$($MYSQL -u $MyUSER -h $MyHOST -p$MyPASS -Bse 'show databases')"
 
cat > ftpcc.sh <<EOF
cd $MBD
ftp -i -n<<!
open blog.renhao.org #在这里填写FTP服务器的域名或IP
user ftp_user ftp_pass #在这里填写FTP用户名和密码，注意空格分隔
binary
mput *.gz
EOF
 
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"
        echo "delete $db.$HOST.$OLD.gz" >> ftpcc.sh
        # 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
 
cat >> ftpcc.sh <<EOF
close
bye
!
EOF
 
sh ftpcc.sh
rm ftpcc.sh

这样的Shell脚本运行后，可以得到每个MySQL库的独立备份文件，且以gz格式压缩以便节省空间。