通过shell脚本自动增加mysql分区表的分区

#!/bin/sh
#
#
:<<BLOCK
######################################################################
SHELL_NAME：Logdb_Add_Partition.sh
  Functional Description：At the last month auto add the logdb table partition
    Argument：

            $1 USER     Mysql Account
            $2 PASS     Mysql Account Pass
            $3 DB        Mysql Logdb
    Version：V1.0
    Creater  : SongYunkui
              Colin_Song
    Crete_time：2010/12/9
    Modify：1. MODIFY BY
            2. ADD    BY ____ ___/__/__ Add:_________
######################################################################
BLOCK

#######################################################################################
if [ $# -lt 3 ]; then
  echo "Please Input The Correct Args"
  echo "Usage Logdb_Add_Partition.sh   "
  exit -1
fi

USER=$1
PASS=$2
DB=$3

##config section begin
CONN_MYSQL="-u$USER -p$PASS -s"
MYSQL_HOME=/opt/modules/mysql
MYSQL_DIR=${MYSQL_HOME}/bin/mysql
SHELL_BASE=/opt/sbin/Logdb
LOG_DIR=${SHELL_BASE}/log
OPT_NAME=add_partition

MKDIR=`whereis -b mkdir|awk '{print $2}'`
TOUCH=`whereis -b touch|awk '{print $2}'`
DATE=`whereis -b date|awk '{print $2}'`
if [ ! -d ${SHELL_BASE} ]
then
    ${MKDIR} -p ${SHELL_BASE}
fi

if [ ! -d ${LOG_DIR} ]
then
    ${MKDIR} -p ${LOG_DIR}
fi

if [ ! -d ${INI_DIR} ]
then
    ${MKDIR} -p ${INI_DIR}
fi

LOG_FILE=${LOG_DIR}/${OPT_NAME}.log

#config section end

#working start
CURRENT_DATE=`${DATE} +'%Y-%m-%d'`
echo "${CURRENT_DATE} everything is ok, runing start" >> ${LOG_FILE}

#loop read the partition table and column
while read TAB_NAME COL_NAME
do

COUNTER=1
CURRENT_YEAR=`date +%Y`
#check the next month
NEXT_MONTH=`date -d next-month +%m`

#check the next month has many days
case ${NEXT_MONTH} in
            1|01|3|03|5|05|7|07|8|08|10|12)
                                           CURRENT_DAY=31
            ;;
            4|04|6|06|9|09|11)
                              CURRENT_DAY=30
            ;;
            2|02)
                if [ `expr ${CURRENT_YEAR} % 4` -eq 0 ]; then
                        if [ `expr ${CURRENT_YEAR} % 400` -eq 0 ]; then
                                CURRENT_DAY=29
                        elif [ `expr ${CURRENT_YEAR} % 100` -eq 0 ]; then
                                CURRENT_DAY=28
                        else
                                CURRENT_DAY=29
                        fi
                else
                        CURRENT_DAY=28
                fi
             ;;
esac

#work start add the every day partition
while [ ${COUNTER} -le ${CURRENT_DAY} ]

do

#calculate the current day's next {counter} day
PATNAME_DATE=`date -d "${COUNTER} days" +%Y%m%d`
COUNTER=`expr ${COUNTER} + 1`
PAT_DATE=`date -d "${COUNTER} days" +%Y%m%d`

#change the unix_timestamp
PAT_UNIX_TIMESTAMP=`${MYSQL_DIR} ${CONN_MYSQL} <<EOF
use ${DB};
select UNIX_TIMESTAMP('${PAT_DATE}');
EOF`

##add partition sql
V_SQL="ALTER TABLE ${DB}."${TAB_NAME}" ADD PARTITION (PARTITION P"${PATNAME_DATE}" VALUES LESS THAN ("${PAT_UNIX_TIMESTAMP}"));"
echo $V_SQL

#exec the sql
${MYSQL_DIR} ${CONN_MYSQL} <<EOF
use ${DB};
$V_SQL;
EOF

done
done<./Logdb_Partition.ini

#working end
END_DATE=`${DATE} +'%Y-%m-%d %H:%M:%S'`
echo "${END_DATE} runing finished" >> ${LOG_FILE}
echo -e "\n--------------------------------------------------------------------" >> ${LOG_FILE}