Linux 檔案級實時複製技術
一、專案描述
Linux 檔案級實時複製技術
二、系統環境（linux）天翼雲
| 原機（/opt/david） |
目標機（/opt/david） |
|
| 彈性IP |
49.75.185.142 837 |
14.18.106.217 837 |
| 作業系統使用者名稱 |
root |
Root |
| 作業系統密碼 |
Jiangs |
|
| 登入方式 |
|
ssh |
| 賬號/密碼 |
N/A |
N/A |
三、遷移步驟
服務端：
linux下檢查rsync是否安裝命令：
rpm -qa|grep rsync
a. 編輯配置檔案
# vi /etc /rsyncd.conf
[[email protected] etc]# cd /etc
[[email protected] etc]# vi rsyncd.conf
# Minimal configuration file for rsync daemon
# See rsync(1) and rsyncd.conf(5) man pages for help
# This line is required by the /etc/init.d/rsyncd script
# GLOBAL OPTIONS
uid = root
gid = root
use chroot = no
read only = yes
#limit access to private LANs
hosts allow=49.75.185.142
hosts deny=*
max connections = 5
pid file = /var/run/rsyncd.pid
secrets file = /etc/rsyncd/rsyncd.secrets
# GLOBAL OPTIONS
uid = root
gid = root
use chroot = no
read only = yes
#limit access to private LANs
hosts allow=49.75.185.142
hosts deny=*
max connections = 5
pid file = /var/run/rsyncd.pid
secrets file = /etc/rsyncd.secrets
# Minimal configuration file for rsync daemon
uid = root
gid = root
use chroot = no
read only = yes
#limit access to private LANs
hosts allow=49.75.185.142
pid file = /var/run/rsyncd.pid
secrets file = /etc/rsyncd.secrets
#lock file = /var/run/rsync.lock
motd file = /etc/rsyncd.motd
#This will give you a separate log file
log file = /var/log/rsync.log
#This will log every file transferred - up to 85,000+ per user, per sync
transfer logging = yes
log format = %t %a %m %f %b
syslog facility = local3
timeout = 300
# MODULE OPTIONS
[davidhome]
path = /opt/david/
list=yes
ignore errors
auth users = rsync
comment = David home
exclude = important/
[chinatmp]
path = /opt/china/
list=no
ignore errors
auth users =
comment = tmp_china
b. 建立/etc/ rsyncd.secrets檔案
#cat /etc/ rsyncd.secrets
rsync:123456
c. 為了密碼的安全性，我們必須把許可權設為600
# chown root:root /etc/ rsyncd.secrets
# chmod 600 /etc/rsyncd.secrets
d. 建立連線到伺服器的客戶端看到的歡迎資訊檔案/etc/rsyncd.motd
# vim /etc/rsyncd.motd
[[email protected] rsyncd]# more rsyncd.motd
+++++++++++++++++++++++++++ + wuzy Camp
服務啟動方式
對於負荷較重的 rsync 伺服器應該使用獨立執行方式
# yum install rsync xinetd --服務安裝
# /usr/bin/rsync –daemon（service xinetd restart）
# chkconfig rsync on
# netstat -ntpl | grep 873 --檢視服務是否啟動
測試
1、客戶端
環境：14.18.106.217
# yum -y install rsync
# mkdir /opt/davie /opt/china
# [[email protected] david]#
rsync -avzP --delete [email protected]::davidhome /opt/david/--讓客戶端與伺服器保持完全一致， --delete
-a --引數，相當於-rlptgoD，
-r --是遞迴
-l --是連結檔案，意思是拷貝連結檔案
-i --列出 rsync 伺服器中的檔案
-p --表示保持檔案原有許可權
-t --保持檔案原有時間
-g --保持檔案原有使用者組
-o --保持檔案原有屬主
-D --相當於塊裝置檔案
-z --傳輸時壓縮
-P --傳輸進度
-v --傳輸時的進度等資訊，和-P有點關係
3、通過密碼檔案同步
# echo "123456"> /etc/rsync.password
# chmod 600 /etc/rsync.password
# rsync -avzP --delete --password-file=/etc/rsync.password [email protected]::davidhome /opt/david/ --呼叫密碼檔案
4、客戶端自動同步
# crontab -e
10 0 * * * rsync -avzP --delete --password-file=/etc/rsync.password [email protected]::davidhome /opt/david/
# crontab -l