#!/bin/bash

#### change the values below where needed.....

#### 多数据库DBNAMES="MyDb1 MyDb2 MyDb3"

DBNAMES="yltgerp"

HOST="--host=10.10.21.250"

USER="--user=root"

PASSWORD="--password=root"

BACKUP_DIR="/home/xu/db"

#### you can change these values but they are optional....

OPTIONS="--default-character-set=utf8 --complete-insert --no-create-info --compact -q"

RESTORESCRIPT="$BACKUP_DIR/__restoreData.sql"

DATE=`/bin/date '+%y%m%d_%H%M%S'`

#### 分表的数据，暂时只导出最新那个月的数据

NOW_MONTH=`/bin/date '+%Y%m'`

#### make no changes after this....

#### start script ####

echo removing old temporary files if they exists...

rm -f ${BACKUP_DIR}/*.sql > /dev/null 2>&1

rm -f ${BACKUP_DIR}/*.tar > /dev/null 2>&1

cd ${BACKUP_DIR}

for DB in $DBNAMES

do

echo "=========================================="

echo ${DB}

echo "=========================================="

echo 'SET FOREIGN_KEY_CHECKS=0;' > $RESTORESCRIPT

#### 导出表结构

mysqldump --no-data $HOST $USER $PASSWORD $DB > ${BACKUP_DIR}/__createTables.sql

echo 'source __createTables.sql;' >> $RESTORESCRIPT

#### 导出表数据

for TABLE in `mysql $HOST $USER $PASSWORD $DB -e 'show tables' | egrep -v 'Tables_in_' `;

do

TABLENAME=$(echo $TABLE|awk '{ printf "%s", $0 }')

FILENAME="${TABLENAME}.sql"

#### 正则忽略 && 当前月数据忽略

if [[ $TABLENAME = david_*_tmp ]] || [[ $TABLENAME =~ 'david_trade_detail_' && $TABLENAME != "david_trade_detail_${NOW_MONTH}" ]]

then

echo ${TABLENAME} '忽略';

continue

else

echo Dumping ${TABLENAME}

echo 'source ' $BACKUP_DIR'/'$FILENAME';' >> $RESTORESCRIPT

mysqldump $OPTIONS $HOST $USER $PASSWORD $DB ${TABLENAME} > ${BACKUP_DIR}/${FILENAME}

fi

done

#### 压缩

:<

echo 'SET FOREIGN_KEY_CHECKS=1;' >> $RESTORESCRIPT

echo making tar...

tar -cf ${DB}_${DATE}.tar *.sql > /dev/null 2>&1

echo compressing...

gzip -9 ${DB}_${DATE}.tar > /dev/null 2>&1

echo removing temporary files...

rm -f ${BACKUP_DIR}/*.sql > /dev/null 2>&1

rm -f ${BACKUP_DIR}/*.tar > /dev/null 2>&1

aaa

echo "done with " $DB

done

echo "=========================================="

echo " done with all database! "

echo "=========================================="