rsyncd服务器配置实例

 rsyncd服务器配置实例

1、在服务器（hosta:192.168.40.20)上创建rsyncd的配置文件/etc/rsyncd.conf

  hosta#vi /etc/rsyncd.conf

    uid = nobody

    gid = nobody

    use chroot = no

    max connections = 4

    pid file = /var/run/rsyncd.pid

    lock file = /var/run/rsync.lock

    log file = /var/log/rsyncd.log

    [backup]

       path = /backup

       ignore errors

       read only = true

       list = false

       hosts allow = 192.168.40.21

       hosts deny = 0.0.0.0/32

       auth users = netsword,root

       secrets file = /etc/rsyncd.secrets

2、创建密码文件/etc/rsyncd.secrets（确保rsyncd的密码与/etc/passwd不同）

   hosta#vi /etc/rsyncd.secrets 

         netsword:xiaobai

         root:123456

   hosta#chown root /etc/rsyncd.secrets

   hosta#chmod 600 /etc/rsyncd.secrects     --确保只有root可读写密码文件

3、启动rsyncd服务

4、在客户端(hostb:192.168.40.21)测试

   hostb#rsync -avlP --progress [email protected]::backup /home/backup

   Password:123456                    --输入/etc/rsyncd.secrets中的密码

Rsync＋SSH---让Server自动异地备份

  例：在主机hosta（192.168.40.20)上的/bak目录自动对主机hostb（192.168.40.21)上的/backup目录做备份且不需要密码

  解决办法：

   1、在hosta上产生public/private dsa密钥对

     hosta#cd /root/.ssh

     hosta#ssh-keygen -d

     Generating public/private dsa key pair.

     Enter file in which to save the key (/root/.ssh/id_dsa):

     Enter passphrase (empty for no passphrase): <-- 此处不打passphrase..下次才不会询问password

     Enter same passphrase again:

     Your identification has been saved in /root/.ssh/id_dsa.

     Your public key has been saved in /root/.ssh/id_dsa.pub.

     The key fingerprint is:

   2、将hosta上/root/.ssh/id_dsa.pub上传到hostb的/root/.ssh上且更名为authorized_keys2

     hosta#scp id_dsa.pub 192.168.40.21:/root/.ssh/authorized_keys2

     [email protected]'s password:    ---输入密码

   3、在hostb上启动rsyncd服务

     hostb#chkconfig rsync on

   4、测试rsnync能否成功

     hosta#rsync -avlR -e ssh [email protected]:/backup/ /bak/ --backup

       注：-a, --archive 归档模式，表示以递归方式传输文件，并保持所有文件属性，等于-rlptgoD

           -R, --relative 使用相对路径信息

           -l, --links 保留符号链接

           -p, --perms 保持文件权限

           -o, --owner 保持文件属主信息

           -g, --group 保持文件属组信息

           -D, --devices 保持设备文件信息

           -t, --times 保持文件时间信息

           -r, --recursive 对子目录以递归模式处理

           --backup, 在覆盖前备份文件

    5、创建sync启动脚本

       hosta#vi /etc/init.d/sync.sh

         #/bin/bash

         /usr/bin/rsync -avlR -e ssh [email protected]:/bakcup/ /bak/

    6、使用crontab 来做自动排程（让hosta每天0时0分自动对hostb进行备份）

       hosta#crontab -e

       0 0 * * * /etc/init.d/sync.sh

7、自启动crond服务

   hosta#chkconfig crond on

本文转自netsword 51CTO博客，原文链接:http://blog.51cto.com/netsword/492485