Rsync保持两服务器数据一致

服务端配置
1，发现原系统已安装rsync，就直接利用

#rpm -qa | grep rsync
rsync-2.5.7-5.3E
#ls /etc/xinetd.d/rsync
/etc/xinetd.d/rsync

2，主要是更改rsyncd.conf和 rsync这两个文件

#mkdir /etc/rsyncd
#cd /etc/rsyncd
#ls

rsyncd.conf    #主配置文件

rsyncd.motd    #banner消息

rsyncd.secrets #里面的内容用户名:密码

3，#cat rsyncd.conf

pid file = /var/run/rsyncd.pid
port = 873
address = 服务器IP
uid = root
gid = root
use chroot = yes
read only = yes
max connections = 5
motd file = /etc/rsyncd/rsyncd.motd
log file = /var/log/rsync.log
[home]
path = /home
list = yes
ignore errors
auth users = root
hosts allow = 客户端IP
secrets file = /etc/rsyncd/rsyncd.secrets
strict modes =  yes
[home2]
path = /home2
list = yes
ignore errors
auth users = root
hosts allow = 客户端IP
secrets file = /etc/rsyncd/rsyncd.secrets
strict modes =  yes
[home3]
path = /home3
list = yes
ignore errors
auth users = root
hosts allow = 客户端IP
secrets file = /etc/rsyncd/rsyncd.secrets
strict modes =  yes
[cvs]
path = /cvs
list = yes
ignore errors
auth users = root
hosts allow = 客户端IP
secrets file = /etc/rsyncd/rsyncd.secrets
strict modes =  yes
#

4,#cat /etc/xinetd.d/rsync

# default: off
# description: The rsync server is a good addition to an ftp server, as it 
#       allows crc checksumming etc.
service rsync
{
        disable = no    #开
        socket_type     = stream
        wait            = no
        user            = root
        server          = /usr/bin/rsync
        server_args     = --daemon --config=/etc/rsyncd/rsyncd.conf  #主配置文件的位置
        log_on_failure  += USERID
}
# service xinetd restart
Stopping xinetd: [  OK  ]
Starting xinetd: [  OK  ]
# netstat -tulpn | grep :873
tcp        0      0 0.0.0.0:873                 0.0.0.0:*                   LISTEN      26323/xinetd   

    

客户端配置
1,

# rpm -qa | grep rsync
rsync-3.0.6-4.el5_7.1

2,#直接用命令复制

rsync  -avz --progress --delete  root@服务端IP::home /home --password-file=/etc/rsyncd.secrets
rsync  -avz --progress --delete  root@服务端IP::home2 /home2 --password-file=/etc/rsyncd.secrets
rsync  -avz --progress --delete  root@服务端IP::home3 /home3 --password-file=/etc/rsyncd.secrets
rsync  -avz --progress --delete  root@服务端IP::cvs /cvs --password-file=/etc/rsyncd.secrets

客户端的rsyncd.secrets文件里只要写上密码即可

其中-a 代表rlptgoD，其实就是保证目录及文件的权限，修改时间，属主，组等一致
    --progress 查看进程
    --delete   客户端内容和服务的一致，当服务端有删除时，客户端也要删除
另外由于strict modes 开了，rsyncd.secrets文件权限要设置成600