Linux下rsync远程数据同步命令的详细介绍

介绍

rsync命令是一个远程数据同步工具，可通过LAN/WAN快速同步多台主机间的文件。rsync使用所谓的“rsync算法”来使本地和远程两个主机之间的文件达到同步，这个算法只传送两个文件的不同部分，而不是每次都整份传送，因此速度相当快。 rsync是一个功能非常强大的工具，其命令也有很多功能特色选项，我们下面就对它的选项一一进行分析说明。

常用场景

无密码同步

服务端：vim /etc/rsyncd.conf

#This is the rsync daemon configuration #global settings pid file = /var/run/rsyncd.pidport = 873lock file = /var/run/rsyncd.locklog file = /var/log/rsync.loggid = rootuid = root#module settings [share_data]path = /web/rsync/share_datause chroot = nomax connections = 15read only = yeswrite only = nolist = noignore errors = yestimeout = 120

/usr/bin/rsync --daemonmkdir -p /web/rsync/share_data

客户端

rsync -avz --progress root@192.168.1.98::share_data /home/hadoop/share_data

限制流量同步

rsync -avz --bwlimit=50 --progress root@192.168.1.98::share_data /home/hadoop/share_data

有密码同步

服务端 

vim /etc/rsyncd.conf

#This is the rsync daemon configuration #global settings pid file = /var/run/rsyncd.pidport = 873lock file = /var/run/rsyncd.locklog file = /var/log/rsync.loggid = rootuid = root#module settings [auth_data]path = /web/rsync/auth_datause chroot = nomax connections = 15read only = yeswrite only = nolist = noignore errors = yestimeout = 120auth users = hadoopsecrets file = /etc/rsyncd.passwd

echo "hadoop:password123" > /etc/rsyncd.passwd chmod 600 /etc/rsyncd.passwdmkdir -p /web/rsync/auth_data

客户端

echo "password123" > /home/hadoop/rsyncd.passwd chmod 600 /home/hadoop/rsyncd.passwd rsync -avz --progress --password-file=/home/hadoop/rsyncd.passwd hadoop@192.168.1.98::auth_data /home/hadoop/auth_data

或者是

export RSYNC_PASSWORD="password123"rsync -avz --progress hadoop@192.168.1.98::auth_data /home/hadoop/auth_data

写入同步

服务端

vim /etc/rsyncd.conf

#global settings pid file = /var/run/rsyncd.pidport = 873lock file = /var/run/rsyncd.locklog file = /var/log/rsync.loggid = rootuid = root#module settings [write_data]path = /web/rsync/write_datause chroot = nomax connections = 15read only = nolist = noignore errors = yestimeout = 120auth users = hadoopsecrets file = /etc/rsyncd.passwd

mkdir -p /web/rsync/write_data

客户端

echo "123" > /home/hadoop/write_fileexport RSYNC_PASSWORD="password123"rsync -avz --progress --delete /home/hadoop/write_file hadoop@192.168.1.98::write_data