shell脚本备份Mysql数据库

   最近两天在帮所在测试组搭建testlink服务，并且和jira进行关联，实现ldap登录方式等等。。。由于之前的jira和testlink服务器硬盘坏过一次，所以主管要求我对服务器的数据每天都要进行备份，之前学得shell正好用上了，哈哈。。

 

#!/bin/bash
#History:2012.08.04
#
#Backup the testlink database /backups
#
#Author: songfei
#Email:  [email protected]
#
#
#

PATH=/usr/bin:/usr/sbin:/bin:/sbin:/usr/local/bin:/usr/local/sbin
export PATH

#当天日期
date=`date +%Y%m%d`
#当天日期+时间
now=`date "+%Y-%m-%d %H:%M:%S"`
#10天前的日期 用来删除较早的备份文件
olddate=`date +%Y%m%d --date="10 days ago"`

#备份文件夹
Data_backup_dir="/home/awind/backups"
#新产生的备份文件名
new_backup_file="${Data_backup_dir}/backup${date}.sql"
#要删除的文件 即10天前的备份文件
old_backup_file="${Data_backup_dir}/backup${olddate}.sql"

#用户名 密码 要备份的数据库
user=root
password=****
db_name=****

#存放邮件的正文
eMailfile="${Data_backup_dir}/email"
#邮件收件人
emailto=root@localhost
#产生的log
logfile="$Data_backup_dir/mysqlbackup.log"




if [ ! -e $Data_backup_dir ];then
 mkdir -p $Data_backup_dir
fi


if [ ! -e $logfile ];then
 touch $logfile
fi

if [ ! -e $eMailfile ];then
 touch $eMailfile
fi

echo "">$eMailfile
echo "================================================================">>$logfile
echo "${now}" >> $eMailfile
echo "${now}" >> $logfile



#删除较早的备份文件
if [ -e ${old_backup_file} ];then
 rm -f ${old_backup_file} >>$logfile
 if [ $? == 0 ];then
   echo "delete old backup file SUCCESS!" >>$logfile
 else
   echo "delete old backup file FAILED!">>$logfile
 fi
else
 echo "the old backup file Not exist!">>$logfile
fi



#备份数据库
#-all-database备份所有数据库
mysqldump -u${user} -p${password} --opt $db_name > ${new_backup_file}


#mysqldump命令的执行结果 并且检查备份文件是否为空
if [ $? == 0 ];then
 if [ -s ${new_backup_file} ];then
   echo "mysqldump : backup the database ${db_name} SUCCESS">>$logfile
   echo "mysqldump: backup the database ${db_name} SUCCESS">>$eMailfile
 else
   echo "mysqldump : the file ${new_back_file} is NULL,soory the backup is FAILED">>$logfile
   echo "mysqldump : the file ${new_back_file} is NULL,sorry the backup is FAILED">>$eMailfile
 fi
else
  echo "mysqldump : Sorry, the backup is FAILED!" >>$logfile
  echo "mysqldump : Sorry, the backup is FAILED!" >>$eMailFile
fi

echo "===================================================================">>$logfile

cat ${eMailfile} | mail -s "Mysql Backup" $emailto