shell 遠程備份日誌

#!/bin/bash #Function:自動備份給定列表中的目錄或文件,而且能夠保留N天備份的檔案。

#可備份至遠程主機指定的目錄下,但需本機能免密碼登陸到遠程主機,用到ssh-keygen

#該腳本分爲兩個文件:執行文件backup.sh和備份項目文件bakfile.lst,兩個文件必須位於同一目錄下

#Author:JianJie #Date:2016/8/26 #Usage:sudo bash backup.sh & #Version:v2 ###############################################################

logFile=/backup/local/log/`date +"%Y-%m"`.log

#日誌文件

logDir=/backup/local/log myDate=`date +"%Y-%m-%d"`                

bakFileLst=bakfile.lst          

#須要備份的文件或目錄放到該文件中 bakDir=/backup/local        

#備份至此目錄 keepDays=5              

#文件保留天數 remoteHost="rhel6.8:rhel7"    

#須要備份至遠程主機的地址,注意本機需免密碼登錄到遠程主機,多個主機地址或主機名之間用‘:’分割 remoteHostDir=/backup/$HOSTNAME    

#遠程主機備份目錄 currentDir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"  

#當前運行腳本所在的目錄

###############################################################

#判斷日誌目錄和日誌文件是否存在

if [ ! -d $logDir ];then

  mkdir -p $logDir  

touch $logFile else  

if [ ! -e $logFile ];then  

touch $logFile  

fi

fi

#開始記錄日誌

echo "Backup start at $(date +"%Y-%m-%d %H:%M:%S")" >> $logFile

echo "--------------------------------------------------------" >> $logFile

echo " " >> $logFile

#判斷保存備份文件的文件列表'bakfile.lst'是否存在

if [ ! -e $currentDir/$bakFileLst ];then  

echo "Error:Important file [$currentDir/$bakFileLst] has been lost,now creating..." >> $logFile  

touch $currentDir/$bakFileLst  

echo "The file [$currentDir/$bakFileLst] has been created,but you still need to write data in it!" >> $logFile  

echo " " >> $logFile   echo "--------------------------------------------------------" >> $logFile  

echo "Backup end at $(date +"%Y-%m-%d %H:%M:%S")" >> $logFile  

echo " " >> $logFile  

exit 3

fi

paths=`cat $currentDir/$bakFileLst`

for path in $paths

do  

baseName=`echo "$path" | xargs basename`  

oldFile=$bakDir/$baseName.$(date --date="$keepDays days ago" +"%Y-%m-%d").txz  

#判斷路徑中備份的是文件仍是目錄  

#若路徑中要備份的是文件,則先進入指定路徑中的上一級  

if [ -f "$path" ];then    

#進入指定路徑中的上一級目錄    

cd `echo "$path" | cut -d "/" -f 1-$(echo "$path"|gawk -F"/" '{print NF-1}')`     

#若要備份的文件已經存在,則再也不重複備份    

if [ -f $bakDir/$baseName.$myDate.txz ];then      

echo "Backup file [$bakDir/$baseName.$myDate.txz] already exists!" >> $logFile    

else      

cp -RHpf $baseName $bakDir      

cd  $bakDir      

#備份檔案格式爲.tar.xz,可根據須要調整,如.tar.gz或者.tar.bz2      

tar -cJf $baseName.$myDate.txz $baseName      

#將備份後的文件經過scp備份到遠程主機      

for host in $(echo "$remoteHost" | sed 's/:/ /g')      

do        

scp -o ConnectTimeout=10 $baseName.$myDate.txz $host:$remoteHostDir >>$logFile 2>/dev/null && \        

echo "Successful backup [$path] to the remote host:[$host:$remoteHostDir]" >>$logFile || \        

echo "Backup [$path] to the remote host:[$host:$remoteHostDir] failed,please check it" >>$logFile      

done        

#備份完成,刪除拷貝過來的源文件        

rm -rf $baseName        

echo "Backup [$path] done into [$bakDir] successfuly!" >> $logFile

#若存在N天前舊文件,則刪除它        

if [ -f $oldFile ];then          

rm -rf $oldFile          

echo "[$oldFile],delete old file successfuly!" >> $logFile        

fi    

fi  

#路徑中備份的是目錄  

elif [ -d "$path" ];then      

#先判斷要備份的文件是否已經存在,若存在則再也不重複備份    

if [ -f $bakDir/$baseName.$myDate.txz ];then      

echo "Backup file [$bakDir/$baseName.$myDate.txz] already exists!" >> $logFile    

else      

cd $path      

cd ..      

cp -RHpf $baseName $bakDir      

cd  $bakDir      

tar -cJf $baseName.$myDate.txz $baseName      

#將備份後的文件經過scp備份到遠程主機      

for host in $(echo "$remoteHost" | sed 's/:/ /g')      

do        

scp -o ConnectTimeout=10 $baseName.$myDate.txz $host:$remoteHostDir >>$logFile 2>/dev/null && \        

echo "Successful backup [$path] to the remote host:[$host:$remoteHostDir]" >>$logFile || \        

echo "Backup [$path] to the remote host:[$host:$remoteHostDir] failed,please check it" >>$logFile      

done        

#備份完成,刪除拷貝過來的源文件        

rm -rf $baseName        

echo "Backup [$path] done into [$bakDir] successfuly!" >> $logFile        

#若存在N天前舊文件,則刪除它        

if [ -f $oldFile ];then          

rm -rf $oldFile          

echo "[$oldFile],delete old file successfuly!" >> $logFile        

fi    

fi  

else    

echo "Wrong path or file:[$path],please check it" >>$logFile   fi done echo " " >> $logFile echo "-------------------------------------------" >> $logFile

echo "Backup end at $(date +"%Y-%m-%d %H:%M:%S")" >> $logFile

echo " " >> $logFile

exit 0