添加计划的shell脚本：

#!/bin/bash
###############################################################################
#    This script is used to generate backup crontab tasks. Please ensure that #
#  the backup node can access remote resources without password via SSH.      #
#    The current running user is 'root', the backup directory is '/backup',   #
#  and the running time is a random time point at 0-3 o'clock every day. You  #
#  can modify these configurations if necessary.                              #
#    -- Programmed by WangXiaoLei on 17/02/2022                               #
###############################################################################
randNumHour=$(($RANDOM%3))
randNumMinute=$(($RANDOM%60))
user=root
if [[ ${1%*/} == ${1:0:-1}  ]]
then
        remoteHost=`echo ${1%*/} | awk -F '@|:' '{print $2}'`
        remoteHostPath=`echo ${1%*/} | awk -F ':' '{print $2}'`
else
        remoteHost=`echo $1 | awk -F '@|:' '{print $2}'`
        remoteHostPath=`echo $1 | awk -F ':' '{print $2}'`
fi
if [[ $1 == *"@"*":"* ]]
then
        remoteHostFolder=${remoteHostPath%*`echo $remoteHostPath | awk -F '/' '{print $NF}'`}
        if ping -c 1 $remoteHost >/dev/null
        then
                if ssh `echo $1 | awk -F ':' '{print $1}'` "ls -l $remoteHostPath"
                then
                        if crontab -l  | grep $remoteHost | grep $remoteHostPath
                        then
                                echo -e "\033[31mThis crontab already exists!\033[0m"
                        fi
                        while true
                        do
                                read -r -p "Are You Sure Add crontab? [Y/n] " input
                                case $input in
                                     [yY][eE][sS]|[yY])
                                          mkdir -p /backup/$remoteHost$remoteHostFolder
                                          echo $randNumMinute" "$randNumHour" * * * /usr/bin/scp -r $1 /backup/$remoteHost$remoteHostFolder" >> /var/spool/cron/$user
                                          chmod 600 /var/spool/cron/$user
                                          crontab /var/spool/cron/$user
                                          /bin/systemctl restart crond.service
                                          exit 1
                                          ;;

                                     [nN][oO]|[nN])
                                          exit 1
                                          ;;

                                      *)
                                          echo "Invalid input..."
                                          ;;
                                esac
                        done
                else
                        echo -e "\033[31m$1 backup resource can not be found!\033[0m"
                fi
        else
                echo -e "\033[31m$remoteHost is unreachable!\033[0m"
        fi
else
        echo "Usage: ./SetBackupCrond.sh <User@Host:FilePath>"
fi

 

 

每日整理备份数据的计划

47 15 * * * if [ -d "/backup-2d" ]; then rm -rf /backup-2d >/dev/null 2>&1; fi  && if [ -d "/backup-1d" ];then mv /backup-1d /backup-2d > /dev/null 2>&1; fi  && if [ -d "/backup" ];then mv /backup /backup-1d >/dev/null 2>&1; fi  && for line in `crontab -l | grep "/usr/bin/scp" | awk '{print $9}'`;do mkdir -p $line; done >/dev/null 2>&1