[CentOS7] rsync 적용

1. 리눅스에서 스케줄 작업의 개요
   1. 스크립트를 작성한다 (일반적으로 .sh파일, 윈도우의 .bat개념)
   2. crontab에 등록한다.

2. 스크립트 (백업로그와 실제 백업 수행)

   1. 백업폴더생성

   2. 스크립트작성

      1. 백업파일식별
         1. www_contents
         2. DB data

            1. 위치확인

               $ mysql -u root -p
               ---------------------
               mysql> show variables like 'datadir';

            2. 결과

               +---------------+-----------------+
               | Variable_name | Value           |
               +---------------+-----------------+
               | datadir       | /var/lib/mysql/ |
               +---------------+-----------------+
               1 row in set (0.00 sec)
               
               
               

      2. 스크립트작성

         $ vi ~/rsync_backup.sh
         -----------------------------------------
         
         #!/bin/sh
         
         PATH=/usr/bin:/bin
         LOG="rsync-backup-$(date +%Y-%m-%d).log"
         WWW_CONTENTS_LOG="rsync-www_contents-$(date +%Y-%m-%d).log"
         WWW_CONTENTS_ERR="rsync-www_contents-$(date +%Y-%m-%d).err"
         MYSQL_FOLDER_LOG="rsync-mysql_folder-$(date +%Y-%m-%d).log"
         MYSQL_FOLDER_ERR="rsync-mysql_folder-$(date +%Y-%m-%d).err"
         
         # rsync to backup location
         echo "Running rsync..." >> /u00/backup/nas/logs/current_month/$LOG
         rsync -avrz /u00/www_contents /u00/backup/nas/www_contents > /u00/backup/nas/logs/current_month/$WWW_CONTENTS_LOG 2> /u00/backup/nas/logs/current_month/$WWW_CONTENTS_ERR
         rsync -avrz /var/lib/mysql /u00/backup/nas/mysql_folder  > /u00/backup/nas/logs/current_month/$MYSQL_FOLDER_LOG 2> /u00/backup/nas/logs/current_month/$MYSQL_FOLDER_ERR
         
         # archive backup to bz2 format (with timestamp)
         #echo "Running tar..." >> ~/$LOG
         #tar -jcvf ~/www-backup-$(date +%Y-%m-%d).tar.bz2 ~/www-backup/ > ~/tar.log 2> ~/tar.err
         #rsync -av --delete --delete-excluded /var/www/ ~/www-backup/ > ~/rsync.log 2> ~/rsync.err
         #rsync -avrz /u00/www_contents ~/www-backup/ > ~/rsync.log 2> ~/rsync.err

   3. /var/lib/mysql/ 

3. 스케줄러 등록

   $ crontab -e
   -----------------------------------
   00 03 * * * ~/rsync_backup.sh

4. rsync log 매월 백업

   1. 스크립트

      $ vi ~/tar_logs_monthly.sh
      -------------------------------------------
      
      mkdir /u00/backup/nas/logs/history/$(date +%Y) -p
      tar -jcvf /u00/backup/nas/logs/history/$(date +%Y)/$(date +%Y-%m).tar.bz2 /u00/backup/nas/logs/current_month
      rm /u00/backup/nas/logs/current_month/*

   2. 스케줄러

      $ crontab -e
      --------------------------------
      00 02 1 * * ~/tar_logs_monthly.sh

1. 설치

   $ yum install rsync

2. 사용

   $ rsync -avrz /u00/www_contents /u00/backup/www_contents