#!/bin/bash
#这个脚本用来备份SQL文件；

sql_home="/home/mysql"
sql_bak_log="$sql_home/xtrabackup.log"
server_conf="/usr/local/sunlight/conf/server.conf"
sql_backup_date=$(date "+%Y%m%d")

if [ -f $server_conf ];then
while read line
do
　　eval "$line"
done < $server_conf
else
　　dbuser="root"
　　sql_passwd=""
　　dbhost="127.0.0.1"
　　sql_port="3306"
fi

sql_user="$dbuser"
sql_passwd="$dbpass"
sql_host="$dbhost"
sql_port="$dbport"

if [ -z "$sql_user" ];then
　　echo "Error! sql user is empty!"
　　echo "Error! sql user is empty!" >> $sql_bak_log
　　exit 1
fi

if [ -z "$sql_passwd" ];then
　　echo "Error! sql password is empty!"
　　echo "Error! sql password is empty!" >> $sql_bak_log
　　# exit 1
fi

if [ ! -d $sql_home ];then
　　mkdir -p $sql_home
　　chown mysql:mysql $sql_home
　　chmod 700 $sql_home
fi

#check mysql daemon
check_sql_daemon=$(mysql -h"$sql_host" -u"$sql_user"  --password="$sql_passwd" -e "select version();")
if [ $? -ne 0 ];then
　　echo "[ Error ] `date "+%Y/%m/%d %H:%M:%S"` [ msg ] We didn't find mysql daemon!"
　　echo "[ Error ] `date "+%Y/%m/%d %H:%M:%S"` [ msg ] We didn't find mysql daemon!" >> $sql_bak_log
　　exit 1
fi

#check xtrabackup package
check_xtrabackup_rpm=$(rpm -qa|grep xtrabackup | wc -l)
if [ $check_xtrabackup_rpm -ne 1 ];then
　　echo "[ Error ] `date "+%Y/%m/%d %H:%M:%S"` [ msg ] xtrabackup does not be installed!"
　　echo "[ Error ] `date "+%Y/%m/%d %H:%M:%S"` [ msg ] xtrabackup does not be installed!" >> $sql_bak_log
　　exit 1
fi

if [ -e "$sql_home/${sql_backup_date}.tar.gz" ];then
　　rm -f "$sql_home/${sql_backup_date}.tar.gz"
fi

sudo -u mysql innobackupex --user=$sql_user --password="$sql_passwd" --socket=/var/lib/mysql/mysql.sock --no-timestamp --stream=tar "$sql_home/" | gzip > "$sql_home/${sql_backup_date}.tar.gz"

if [ $? -eq 0 ];then
　　echo "[ Success ] `date "+%Y/%m/%d %H:%M:%S"` [ msg ] The tar.gz package has been finished !" >> $sql_bak_log
else
　　echo "[ Error ] `date "+%Y/%m/%d %H:%M:%S"` [ msg ] The first backup step has been failed !" >> $sql_bak_log
　　echo "-------------------------------------------------------------------------------------------------" >> $sql_bak_log
　　exit 1
fi

chown mysql:mysql  -R /home/mysql

chmod 755 -R /home/mysql

echo "[ Success ] `date "+%Y/%m/%d %H:%M:%S"` Mysql Files Backup Success! " >> $sql_bak_log
echo "-------------------------------------------------------------------------------------------------" >> $sql_bak_log
exit 0