Linux系统rsync实战操作

Linux系统rsync实战操作

前面介绍了一些关于rsync的功能与一些具体的命令格式、参数的使用意义等，今天我们来聊一聊整个实际生产过程中的实战操作过程

今天介绍的是第三种模式——以守护进程的模式传输数据

一：整体环境

备份服务器端（BK-S）

[root@BS-S~]# cat /etc/redhat-release

CentOS release 6.5 (Final)

[root@BS-S ~]# uname -r

2.6.32-431.el6.x86_64

备份数据的客户端(BK-C)

[root@BS-C ~]# cat /etc/redhat-release

CentOS release 6.5 (Final)

[root@BS-C ~]# uname -r

2.6.32-431.el6.x86_64

二：配置过程

以下配置为备份数据服务器端

1、检查是否安装软件

[root@BK-S ~]# rpm -qa |grep "rsync"

rsync-3.0.6-9.el6_4.1.x86_64

2、配置rsync的配置文件/etc/rsync.conf

[root@BK-S ~]#cat /etc/rsyncd.conf

cat:/etc/rsyncd.conf: No such file or directory

显示系统无此文件，因此我们直接创建文件

[root@BK-S ~]# vi /etc/rsyncd.conf

##rsync config start

##created by root 2016-08-08 15:00

##rsyncd.conf config start 以上为注释部分

uid = rsync

gid = rsync

use chroot = no

max connetctions = 200 最大连接数（并发）

timeout = 100 超时时间默认S单位

pid file = /var/run/rsyncd.pid

lock file = /var/run/rsync.lock

log file = /var/log/rsyncd.log

[backup] 模块名称可自定义任意名称

path = /backup/ 备份数据的路径

ignore errors 忽略错误

read only = false

list = false

hosts allow = 192.168.1.0/24

hosts deny = 0.0.0.0/32

auth users = rsync_backup 虚拟的用户用于连接认证

secrets file = /etc/rsync.password 认证的密码配置文件路径

##rsync config end

整个配置过程中注意中间的空格与书写规范

检查配置文件

[root@BK-S ~]# cat /etc/rsyncd.conf

##rsync config start

##created by root 2016-08-08 15:00

##rsync.conf config start

uid = rsync

gid = rsync

use chroot = no

max connetctions = 200

timeout = 100

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 = false

list = false

hosts allow = 192.168.1.0/24

hosts deny = 0.0.0.0/32

auth users = rsync_backup

secrets file = /etc/rsync.password

##rsync config end

3、格式化配置文件

[root@BK-S ~]#dos2unix /etc/rsync.conf 没有安装

-bash: dos2unix:command not found

[root@BK-S ~]#yum install dos2unix -y YUM进行安装

Loaded plugins:fastestmirror, refresh-packagekit, security

Loading mirrorspeeds from cached hostfile

* base: mirrors.zju.edu.cn

* extras: mirrors.zju.edu.cn

* updates: mirrors.zju.edu.cn

base | 3.7 kB 00:00

extras |3.4 kB 00:00

updates |3.4 kB 00:00

updates/primary_db | 2.0 MB 00:01

Setting up InstallProcess

ResolvingDependencies

--> Runningtransaction check

---> Packagedos2unix.x86_64 0:3.1-37.el6 will be installed

--> FinishedDependency Resolution

DependenciesResolved

============================================

Package Arch Version Repository Size

======================================Installing:

dos2unix x86_64 3.1-37.el6 base 16 k

TransactionSummary

============================================

Install 1 Package(s)

Total downloadsize: 16 k

Installed size: 18k

DownloadingPackages:

dos2unix-3.1-37.el6.x86_64.rpm | 16kB 00:00

Running rpm_check_debug

RunningTransaction Test

Transaction TestSucceeded

RunningTransaction

Installing : dos2unix-3.1-37.el6.x86_64 1/1

Verifying : dos2unix-3.1-37.el6.x86_64 1/1

Installed:

dos2unix.x86_64 0:3.1-37.el6

Complete!

[root@BK-C]#dos2unix /etc/rsync.conf

dos2unix:converting file /etc/rsync.conf to UNIX format ...

4、添加用户

[root@BK-S ~]#useradd rsync -s /sbin/nologin -M

[root@BK-S /]#mkdir backup

[root@BK-S /]#chown -R rsync.rsync /backup

[root@BK-S /]# ls -ll

drwxr-xr-x. 2 rsync rsync 4096 Aug 27 14:30 backup

dr-xr-xr-x. 2 root root 4096 Aug 15 19:15 bin

dr-xr-xr-x. 5 root root 1024 Aug 7 18:04 boot

drwxr-xr-x. 3 root root 4096 Aug 21 10:07 data

drwxr-xr-x. 19 root root 3860 Sep 2 05:05 dev

5、配置密码文件

[root@BK-S /]# echo "rsync_backup:rsync.conf">>/etc/rsync.password

[root@BK-S /]# cat /etc/rsync.password

rsync_backup:rsync.conf 认证用户：认证密码

因密码文件为明文，所以需要改变默认权限

[root@BK-S /]# chmod 600 /etc/rsync.password

[root@BK-S /]# ls -ld /etc/rsync.password

-rw-------. 1 root root 24 Sep 2 05:43 /etc/rsync.password

6、启动服务

[root@BK-S /]# rsync --daemon 启动服务后台运行

[root@BK-S /]# netstat -lntup |grep rsync 查看服务使用端口

tcp 0 0 0.0.0.0:873 0.0.0.0:* LISTEN 2013/rsync

tcp 0 0 :::873 :::* LISTEN 2013/rsync

[root@BK-S /]# ps -ef |grep rsync

root 2013 1 0 05:45 ? 00:00:00 rsync --daemon

root 2018 1930 0 05:46 pts/0 00:00:00 grep rsync

至此备份数据的服务端配置结束

7、以下为客户配置过程

[root@BK-C ~]# echo "rsync.conf">/etc/rsync.password

[root@BK-C ~]# cat /etc/rsync.password

rsync.conf

[root@BK-C ~]# chmod 600 /etc/rsync.password

[root@BK-C ~]# ls -ld /etc/rsync.password

-rw-------. 1 root root 11 Sep 3 13:57 /etc/rsync.password

客户端配置结束

三：测试数据备份

[root@BK-C ~]# rsync -avzP /etc/hosts rsync_backup@192.168.1.2::backup --password-file=/etc/rsync.password

rsync: failed to connect to 192.168.1.2: No route to host (113)

rsync error: error in socket IO (code 10) at clientserver.c(124) [sender=3.0.6]

报错提示没有路由，表明服务端防火墙没有关闭

[root@BK-S backup]# /etc/init.d/iptables stop

iptables: Setting chains to policy ACCEPT: filter [ OK ]

iptables: Flushing firewall rules: [ OK ]

iptables: Unloading modules: [ OK ]

服务端关闭防火墙

[root@BK-C~]# rsync -avzP /etc/hosts rsync_backup@192.168.1.2::backup --password-file=/etc/rsync.password

sending incremental file list

hosts

322 100% 0.00kB/s 0:00:00 (xfer#1, to-check=0/1)

sent 141 bytes received 27 bytes 336.00 bytes/sec

total size is 322 speedup is 1.92

显示数据备份完成

备份服务器上查看是否备份成功

[root@BK-C~]# cat /etc/hosts

127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4

::1 localhost localhost.localdomain localhost6 localhost6.localdomain6

###########www.baidu.com################

[root@BK-S backup]# ls -ll

total 4

-rw-r--r--. 1 rsync rsync 322 Aug 30 03:29 hosts

[root@BK-S backup]# cat hosts

127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4

::1 localhost localhost.localdomain localhost6 localhost6.localdomain6

###########www.baidu.com################

两台服务器上hosts文件内容相同，表明备份成功

[root@BK-C ~]# cd /tmp

[root@BK-C tmp]# ls

[root@BK-C tmp]# ls -ll

total 0

[root@BK-C tmp]# touch 123.txt

[root@BK-C tmp]# touch 321.txt

[root@BK-C tmp]# rsync -avzP /tmp/ rsync_backup@192.168.1.2::backup --

password-file=/etc/rsync.password

sending incremental file list

123.txt

0 100% 0.00kB/s 0:00:00 (xfer#1, to-check=2/4)

321.txt

0 100% 0.00kB/s 0:00:00 (xfer#2, to-check=1/4)

.ICE-unix/

sent 162 bytes received 53 bytes 430.00 bytes/sec

total size is 0 speedup is 0.00

服务端查看数据同步情况

[root@BK-S backup]# ls -ll

total 4

-rw-r--r--. 1 rsync rsync 0 Sep 9 2016 123.txt

-rw-r--r--. 1 rsync rsync 0 Sep 9 2016 321.txt

-rw-r--r--. 1 rsync rsync 322 Aug 30 03:29 hosts

测试--delete参数

[root@BK-S backup]# mkdir text

[root@BK-S backup]# mkdir text1

[root@BK-S backup]# mkdir text2

[root@BK-S backup]# mkdir text3

[root@BK-S backup]# touch 4565.bak

[root@BK-S backup]# touch 4565.txt

[root@BK-S backup]# ls -ll

total 20

-rw-r--r--. 1 rsync rsync 0 Sep 9 2016 123.txt

-rw-r--r--. 1 rsync rsync 0 Sep 9 2016 321.txt

-rw-r--r--. 1 root root 0 Sep 7 13:48 4565.bak

-rw-r--r--. 1 root root 0 Sep 7 13:48 4565.txt

-rw-r--r--. 1 rsync rsync 322 Aug 30 03:29 hosts

drwxr-xr-x. 2 root root 4096 Sep 7 13:48 text

drwxr-xr-x. 2 root root 4096 Sep 7 13:48 text1

drwxr-xr-x. 2 root root 4096 Sep 7 13:48 text2

drwxr-xr-x. 2 root root 4096 Sep 7 13:48 text3

[root@BK-C tmp]# rsync -avzP --delete /tmp/ rsync_backup@192.168.1.2::

backup --password-file=/etc/rsync.password

sending incremental file list

deleting text3/

deleting text2/

deleting text1/

deleting text/

deleting hosts

deleting 4565.txt

deleting 4565.bak

sent 91 bytes received 12 bytes 206.00 bytes/sec

total size is 0 speedup is 0.00

服务器端查看结果

[root@BK-S backup]# ls -ll

total 0

-rw-r--r--. 1 rsync rsync 0 Sep 9 2016 123.txt

-rw-r--r--. 1 rsync rsync 0 Sep 9 2016 321.txt

最终结果显示delete参数的作用就是：客户端有什么，远端服务器就有什么，客户备份目录下没有的，远端服务器目录下其它文件或目录就会被删除，此参数相当危险，实际生产环境中要小心使用

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