Synchronize files by rsync between two Linux hosts

有別於以往先手動交換主機間SSH的金鑰後再透過rsync於兩台主機間同步檔案，今天又學習到了一個新方法，在此稍做筆記。

需求：

將/var/www/html自動從HostA同步到HostB。

HostA: 10.10.2.126 (source)

HostB: 10.10.2.128 (destination)

Step:

1. 設定HostA(Destination)：

1.1 確定有安裝rsync:

[root@server1 ~]# rpm -qa | grep -i rsync

rsync-3.0.6-5.el6_0.1.i686

1.2 編輯/etc/xinetd.d/rsync：

service rsync

{

disable = no

flags = IPv6

socket_type = stream

wait = no

user = root

server = /usr/bin/rsync

server_args = --daemon

log_on_failure += USERID

}

1.3 建立/etc/rsyncd.conf：

# any name you like

[test]

# destination directory

path = /home/backup

# Hosts you allow to copy (specify source Host)

hosts allow = 10.10.2.126

hosts deny = *

list = true

uid = root

gid = root

read only = false

1.4 重新啟動xinetd

[root@server1 ~]# /etc/init.d/xinetd restart

正在停止 xinetd： [ 確定 ]

正在啟動 xinetd： [ 確定 ]

2. 設定HostB(Source)：

2.1 確定有安裝rsync:

[root@server1 ~]# rpm -qa | grep rsync

rsync-3.0.6-4.el5_7.1

2.2 執行rsync將檔案同步：

[root@server1 ~]# rsync -avz --delete /var/www/html/ 10.10.2.128::test

sending incremental file list

./

proxy.pac

proxy.pac.ipv4

proxy.pac.ipv6

wpad.dat -> proxy.pac

ssl/

ssl/index.hrml

sent 3089 bytes received 174 bytes 6526.00 bytes/sec

total size is 5039 speedup is 1.54