#!/bin/bash
#
# Description: 该脚本功能,以周为单位循环;周五实行完全备份,周六不备份,周日至周四实行差异备份;
# 因工作需要,不实行压缩打包的方式,采用cp完全备份,rsync差异备份;
# 若要使用该脚本,请直接修改下面的两个参数:BackupPath和DATAPath,其他地方请不要修改;
# DATE: 2017-04-24 22:43:00
# MODIFY DATE: 2017-05-08 10:00:00
# VERSION: 1.2
# Author: xixi_chan
# 导入PATH和LANG环境变量
export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin:/bin:/sbin:/root/bin
export LANG=en_US.UTF-8
# 重新定义IFS变量避免目录或文件名存在空格时被分割
IFS=`echo -en "\n\b"`
# 定义全局变量
BackupPath=/mnt/backup_data/# 指定备份路径
DATAPath=/data/ac-cnc/ # 需要备份的目录
Time=`date +%Y-%m-%d`# 定义Today的时间变量
Host=`echo $HOSTNAME | awk -F'.' '{print $1}'`# 定义主机名
LogFile="/var/log/${Host}/${Host}_${Time}.log" # 定义日志文件名称
LogDir=`echo "$LogFile" | sed -r 's@[^/]+/?$@@g'`# 定义日志文件所在的目录
DirFile=`ls $DATAPath`# 将备份路径下的文件及目录保存至变量DirFile中
FirstFile="${BackupPath}${Host}_${Time}/`basename ${DATAPath}`/" # 根据时间定义当前备份的目录
OldFirstFile="${BackupPath}${Host}_$(date +%Y-%m-%d --date='7 days ago')"# 定义7天前的备份目录
# 记录日志文件的开头部分
Head() {
[ ! -d $LogDir ] && mkdir $LogDir
echo "---------------------The backup starts----------------------" > $LogFile
echo >> $LogFile 2>&1
echo "Start Backup $DATAPath $(date +"%y-%m-%d %H:%M:%S")" >> $LogFile 2>&1
echo >> $LogFile 2>&1
echo "---------------------The backup starts----------------------" >> $LogFile 2>&1
echo >> $LogFile 2>&1
echo >> $LogFile 2>&1
}
# 完全备份
FullBackup(){
echo "Today is week: `date +%a`, Start performing a full backups..."
echo >> $LogFile 2>&1
echo >> $LogFile 2>&1
if [ -d $OldFirstFile ];then
rm -rf $OldFirstFile >> $LogFile 2>&1
echo "[ $OldFirstFile ] Delete Old File Success!`date`" >> $LogFile 2>&1
[ ! -d $FirstFile ] && mkdir -pv $FirstFile >> $LogFile 2>&1
cd $DATAPath
for File in $DirFile; do
cp -a ${File} $FirstFile >> $LogFile 2>&1
if [ $? -eq 0 ];then
echo "[ ${DATAPath}${File} ] Backup Success!`date`" >> $LogFile 2>&1
fi
done
else
if [ ! -d $FirstFile ];then
mkdir -pv $FirstFile >> $LogFile 2>&1
cd $DATAPath
for File in $DirFile; do
cp -a ${File} $FirstFile >> $LogFile 2>&1
if [ $? -eq 0 ];then
echo "[ ${DATAPath}${File} ] Backup Success!`date`" >> $LogFile 2>&1
fi
done
else
echo "[ $DATAPath ]The Backup File is exists,Can't Backup!`date`" >> $LogFile 2>&1
fi
fi
}
# 差异备份
DiffBackup() {
echo "Today is week: `date +%a`, Start performing differential backups..."
echo >> $LogFile 2>&1
echo >> $LogFile 2>&1
if [ -d $OldFirstFile ];then
rm -rf $OldFirstFile >> $LogFile 2>&1
echo "[ $OldFirstFile ] Delete Old File Success! `date`" >> $LogFile 2>&1
[ ! -d $FirstFile ] && mkdir -pv $FirstFile >> $LogFile 2>&1
rsync --dry-run -racnC --out-format="%n" $DATAPath $d_dir | grep -v "/$" | xargs -I{} rsync -R -a -z ${DATAPath}/./{} $FirstFile
if [ $? -eq 0 ];then
echo "[ ${DATAPath}${File} ] Backup Success!`date`" >> $LogFile 2>&1
fi
else
if [ ! -d $FirstFile ];then
mkdir -pv $FirstFile >> $LogFile 2>&1
rsync --dry-run -racnC --out-format="%n" $DATAPath $d_dir | grep -v "/$" | xargs -I{} rsync -R -a -z ${DATAPath}/./{} $FirstFile
if [ $? -eq 0 ];then
echo "[ ${DATAPath}${File} ] Backup Success!`date`" >> $LogFile 2>&1
fi
else
echo "[ ${DATAPath} ]The Backup File is exists,Can't Backup! `date`" >> $LogFile 2>&1
fi
fi
}
# 日志的结束部分
end(){
echo >> $LogFile 2>&1
echo >> $LogFile 2>&1
echo "---------------------The backup ends ----------------------" >> $LogFile 2>&1
echo >> $LogFile 2>&1
echo " $DATAPath backup ends $(date +"%y-%m-%d %H:%M:%S")" >> $LogFile 2>&1
echo >> $LogFile 2>&1
echo "---------------------The backup ends ----------------------" >> $LogFile 2>&1
}
a=`date +%u`# 定义Today是星期几
b=7 # 定义多少天循环一次完全备份和差异备份,这里定义为7点循环一次,如果要增大循环天数,请修改此处
c=5# 这里5代表是周五完全备份,如果要改成周六完全备份,请修改为6
d=6# 定义每周6不备份数据
# 注意,下面的语句很重,判断Today是否大于$c,定义变量ago将采用不同的表达式计算
if [ "$a" -gt "$c" ]; then
ago=$[ $a - $c ]
else
ago=$[ $a + $b -$c ] # 定义Today离$c有多少天
fi
d_dir=${BackupPath}${Host}_$(date +%Y-%m-%d -d "`echo $ago` days ago")/`basename ${DATAPath}`/
#date +%Y-%m-%d -d "`echo $ago` days ago"
# 定义备份策略
if [ "$a" -eq "$c" ]; then
Head
FullBackup
end
elif [ "$a" -eq "$d" ]; then
Head
echo "Today is Saturday 6, according to the backup strategy, today no data backup." >> $LogFile 2>&1
end
else
Head
DiffBackup
end
fi
# 备份完成后发送邮件至指定邮箱
Mail_Group="ccs_chan_ccs@163.com chen-wen@ab-mold.cn"
mail -s "From $Host backup information < $Time >" $Mail_Group < $LogFile
exit 0
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