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##set environment##
. ~/.bash_profile
BASEDIR="/data_bak"
SPACE_RATE=95        #space rate 95
SPACE_ROOM=10485760  #10GB
WORKPATH=/data_bak/mysqlbackup/percona
DATETIME=`date '+%Y%m%d%H%M'`
INNOBACKUPEX="/usr/bin/innobackupex-1.5.1"
MYSQL="/home/mysqlapp/product/bin/mysql"
BACKUP_USER="root"
BACKUP_PASSWD="******"
BACKUP_HOST="localhost"
BACKUP_PORT="3306"
DEFAULTS_FILE="/home/mysqlapp/config/my.cnf"
SOCKET="/home/mysqlapp/dbdata/mysqld.sock"
DATE_VAR=`date +%F_%H-%M-%S`
MAIL_LIST="xianyezhao@richinfo.cn"
MAIL_BIN="/home/crond/bsmtp"
MAIL_IP="*****"
#sent mail:0 error backup; 1 success backup
my_sentmail()
{
if [ $1 == 1 ]; then
   echo " " | ${MAIL_BIN} -f `hostname`@139.com -h smtp.api.localdomain -s "${MAIL_IP}:Succes Innobackupex backup"  ${MAIL_LIST}  < ${WORKPATH}/maillog/mail_dba_${WORKDATE}.log
else
   echo " " | ${MAIL_BIN} -f `hostname`@139.com -h smtp.api.localdomain -s "${MAIL_IP}:Error Innobackupex backup"  ${MAIL_LIST}  < ${WORKPATH}/maillog/mail_dba_${WORKDATE}.log
fi
}
# Step 1: if slave status is ok,then backup the databases,else send error information and exit
$MYSQL -u$BACKUP_USER -h$BACKUP_HOST  -p$BACKUP_PASSWD -Bse"show slave status \G">${WORKPATH}/slave_status.txt
SLAVE_IO_RUNNING_STATUS=`cat ${WORKPATH}/slave_status.txt|grep Slave_IO_Running|cut -d: -f2|sed s/[[:space:]]//g`
SLAVE_SQL_RUNNING_STATUS=`cat ${WORKPATH}/slave_status.txt|grep Slave_SQL_Running|cut -d: -f2|sed s/[[:space:]]//g`
if [ ${SLAVE_IO_RUNNING_STATUS} != Yes ]; then
echo "SLAVE_IO_RUNNING_STATUS is not Yes">${WORKPATH}/maillog/mail_dba_${WORKDATE}.log
my_sentmail 0
exit 0
fi
if [ ${SLAVE_SQL_RUNNING_STATUS} != Yes ]; then
echo "SLAVE_SQL_RUNNING_STATUS is not Yes">${WORKPATH}/maillog/mail_dba_${WORKDATE}.log
my_sentmail 0
exit 0
fi
# Step 2: To check the backup work directory room
# if nfs then $1 and $4
SPACE_ROOM_CK=`df -k | grep "$BASEDIR" | awk '{print $2}'`
SPACE_USED_RATE=`df -k | grep "$BASEDIR" | awk '{print $5}' |awk -F% '{print $1}'`
if [ ${SPACE_USED_RATE} -lt ${SPACE_RATE} ] && [ ${SPACE_ROOM_CK} -gt ${SPACE_ROOM} ]
then
    echo "There have enough room for backup,let goto backup our database now" >> ${WORKPATH}/log/${BACKUP_FILE_NAME}_$WORKDATE.log
else
    echo "There have not enough room for our backup work,sadly to heard that" >> ${WORKPATH}/log/${BACKUP_FILE_NAME}_$WORKDATE.log
    echo -e "The backup task fail cause for there have not enough space room for backup on directory \nDatabase's IP is ${BACKUP_HOST}" > ${WORKPATH}/maillog/mail_dba_${WORKDATE}.log
    my_sentmail 0
    exit 0
fi
##Step 3:rm dmp file before 2 copys
cd $WORKPATH/$1
keepday=`ls -l|grep MYSQLBACKUP|wc -l`
if [ $keepday -gt 1 ]
then
 rm -fr `ls -lt|grep MYSQLBACKUP|tail -n 1|awk '{print $9}'`
fi
##Step 4:make  dir
cd $WORKPATH/$1
TMPDIR="MYSQLBACKUP"`date '+%Y%m%d'`
if [ ! -f  ${TMPDIR} ]
then
mkdir ${TMPDIR}
fi
#Step 5:to backup
cd $TMPDIR
${INNOBACKUPEX} --user=${BACKUP_USER} --password=${BACKUP_PASSWD} --defaults-file=${DEFAULTS_FILE} --socket=${SOCKET} $WORKPATH/$1/${TMPDIR}/ 2>$WORKPATH/log/$1_${DATE_VAR}.log
# echo The success info to the send mail information file
echo `date '+%Y%m%d%H%M'` > ${WORKPATH}/maillog/mail_dba_${WORKDATE}.log
echo "Today backup success. " >> ${WORKPATH}/maillog/mail_dba_${WORKDATE}.log
echo `hostname`" for databases:"${ALL_DATABASES}>> ${WORKPATH}/maillog/mail_dba_${WORKDATE}.log
echo "Database's IP is ${BACKUP_HOST}">> ${WORKPATH}/maillog/mail_dba_${WORKDATE}.log
echo `date '+%Y%m%d%H%M'` >> ${WORKPATH}/log/${BACKUP_FILE_NAME}_$WORKDATE.log
echo "Today backup success! " >> ${WORKPATH}/log/${BACKUP_FILE_NAME}_$WORKDATE.log
echo `hostname`" for databases:"${ALL_DATABASES} >> ${WORKPATH}/log/${BACKUP_FILE_NAME}_$WORKDATE.log
echo "Database's IP is ${BACKUP_HOST}">> ${WORKPATH}/log/${BACKUP_FILE_NAME}_$WORKDATE.log
my_sentmail 1
exit 0

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