用rsync进行两机备份的shell脚本

最近做服务器运维，用rsync进行两机备份的话比较好，对数据保全比较好。因此写了这个脚本，加进crontab当中，定期对服务器备份数据库以及www目录下的网站。

脚本如下，使用前请先针对自己的服务器环境设置变量值，错误之处还请指出，谢谢！原创脚本，转载请保留原作者信息！

#/bin/bash
# This script is used to do backup and rsync works for servers.
# ./backup.sh (db_rsync|www_rsync)
# By Chen Zhidong
# http://sillydong.com

# 获取可执行文件路径
MYSQL="$(which mysql)"
MYSQLDUMP="$(which mysqldump)"
GZIP="$(which gzip)"

#定义数据库dump目录
DB_DUMP="/home/www/database/"

#定义MySQL认证
DB_USER=""
DB_PASS=""
DB_HOST="127.0.0.1"

#定义www目录
LOCAL_WWW=""
RSYNC_WWW=""

#定义本地rsync密码文件位置
PASSFILE=""
RSYNC_NAME=""
RSYNC_IP=""

#获取本地AccessIP用作后面rsync的文件夹
IP=`ifconfig | grep "venet0:0" --after-context=1 | sed -n 's/..*addr:\(..*\) P-t-P..*/\1/p' | sed '/127.0.0.1/d'`

function db_dump{
  DBS="$($MYSQL -u'$DB_USER' -h $DB_HOST -p'$DB_PASS' -Bse 'show databases')"
  for db in $DBS
  do
    case $db in
    "information_schema")
      ;;
      "mysql")
      ;;
    "test")
      ;;
    *)
      echo "Dump $db begin at $(date)" >> $DB_DUMP/db_dump.log
      $MYSQLDUMP --opt $db -u'$DB_USER' -h $DB_HOST -p'$DB_PASS'  > $DB_DUMP/$(date +%F)-$db.sql
    esac
  done
  echo "Dump $db done at $(date)" >> $DB_DUMP/db_dump.log
}

function db_rsync{
  echo "db_rsync begin at $(date)!" >> db_rsync.log
  rsync -rvlHpogDtS --delete --password-file=$PASSFILE /home/database --exclude *\log\* --exclude *\backup\* --exclude *.rar --exclude *.zip rsync://$RSYNC_NAME@$RSYNC_IP/$IP_db_lio >> $DB_DUMP/db_rsync.log
  echo "db_rsync done at $(date)!" >> db_rsync.log
}

function www_rsync{
  echo "www_rsync begin at $(date)!" >> www_rsync.log
  rsync -rvlHpogDtS --delete --password-file=$PASSFILE /home/www --exclude *\log\* --exclude *\backup\* --exclude *.rar --exclude *.zip rsync://$RSYNC_NAME@$RSYNC_IP/$IP_www_lio >> $DB_DUMP/db_rsync.log
  echo "www_rsync done at $(date)!" >> www_rsync.log
}

case $1 in
db_rsync)
  db_dump 2>> /home/rsync_error.log
  db_rsync 2>> /home/rsync_error.log
;;
www_rsync)
  www_rsync 2>> /home/rsync_error.log
;;
*)
    echo "$(date)You didn't add parameter in your crontab." >> crontab.log
  echo "Syntax: backup.sh (db_rsync|www_rsync)" >> crontab.log
;;
esac

另有一脚本，用于在备份机上rsyncd.conf中添加记录，如下：

#/bin/bash
# ./rsyncd.sh IP

# for db
echo ""
echo "[$1_db_lio]" >> /etc/rsyncd.conf
echo "path = /backup/mysql/$1" >> /etc/rsyncd.conf
echo "uid = root" >> /etc/rsyncd.conf
echo "gid = root" >> /etc/rsyncd.conf
echo "read only = false" >> /etc/rsyncd.conf
echo "ignore errors" >> /etc/rsyncd.conf
echo "secrets file = /etc/rsyncd.pas" >> /etc/rsyncd.conf
echo "host allow $1" >> /etc/rsyncd.conf

#for www
echo ""
echo "[$1_www_lio]" >> /etc/rsyncd.conf
echo "path = /backup/vhosts/rsyncfiles/$1" >> /etc/rsyncd.conf
echo "uid = root" >> /etc/rsyncd.conf
echo "gid = root" >> /etc/rsyncd.conf
echo "read only = false" >> /etc/rsyncd.conf
echo "ignore errors" >> /etc/rsyncd.conf
echo "secrets file = /etc/rsyncd.pas" >> /etc/rsyncd.conf
echo "host allow $1" >> /etc/rsyncd.conf

tail -n 17 /etc/rsyncd.conf