三服务器共享系统

目录

• 各服务器环境
  • 1、创建gjs用户和组
  • 2、关闭防火墙和selinux
• 备份服务器backup
  • rsyncd服务端
  • NFS服务端
• 文件服务器nfs
  • rsyncd客户端
  • NFS服务端
  • sersync服务
• 用户服务器web
  • 配置httpd服务
  • rsyncd客户端
  • NFS客户端
• NFS故障
• 三服务详细步骤
  • 各服务器环境
  • 1、创建gjs用户和组
  • 2、关闭防火墙和selinux
  • 3、NFS服务端配置
  • 4、httpd服务端配置
  • 5、nfs客户端配置
  • 6、上传测试
  • 7、rsyncd服务端配置
  • 8、NFS推送文件测试
  • 9、sersync服务端配置
  • 10、测试三服务器是否同步

各服务器环境

1、创建gjs用户和组

[root@host ~]# groupadd -g 666 gjs
[root@host ~]# useradd -u 666 -g 666 gjs

2、关闭防火墙和selinux

[root@nfs ~]# systemctl stop firewalld
[root@nfs ~]# systemctl disable firewalld
[root@nfs ~]# getenforce	查看是否开启
[root@nfs ~]# setenforce 0
[root@nfs ~]# vim /etc/selinux/config
SELINUX=disabled

备份服务器backup

rsyncd服务端

	1># 安装rsyncd，rsync的守护进程
[root@backup ~]# yum install -y rsyncd

	2># 写配置文件
[root@backup ~]# vim /etc/rsyncd.conf 
uid = gjs
gid = gjs
port = 873
fake super = yes
use chroot = no
max connections = 200
timeout = 600
ignore errors
read only = false
list = false
auth users = gjs_backup
secrets file = /etc/rsyncd.passwd
log file = /var/log/rsyncd.log
#################################
[upload]
comment = welcome to backup!
path = /web_upload

	3># 创建备份的目录和密码文件
[root@backup ~]# mkdir /web_upload
[root@backup ~]# chown -R gjs.gjs /web_upload/
[root@backup ~]# echo 'gjs_backup:123456' > /etc/rsyncd.passwd
[root@backup ~]# cat /etc/rsyncd.passwd 
gjs_backup:123456
[root@backup ~]# chmod 600 /etc/rsyncd.passwd 
	4># 启动rsyncd并检查
[root@backup ~]# systemctl start rsyncd
[root@backup ~]# netstat -lntup | grep rsync
[root@backup ~]# ps aux | grep rsync
root       1149  0.0  0.1 114748  1124 ?        Ss   02:54   0:00 /usr/bin/rsync --daemon --no-detach

NFS服务端

	1>#安装NFS和rpcbind
[root@nfs ~]# yum install -y nfs-utils rpcbind
#如果是centos6需要单独安装rpcbind，centos7可以不单独安装

	2>#创建数据目录 用于挂载到web服务器
[root@nfs ~]# mkdir /web_upload
[root@nfs ~]# chown -R gjs.gjs /web_upload

	3>#配置/etc/exports
[root@nfs ~]# vim /etc/exports
/web_upload 172.16.1.0/24(rw,sync,all_squash,anonuid=666,anongid=666)

	4>#启动NFS服务
[root@nfs ~]# systemctl start rpcbind nfs-server
#如果是centos6，启动时必须先启动rpcbind，centos7会自动启动
#验证启动
[root@nfs ~]# ps -ef | grep nfs

	5>#验证NFS配置
[root@nfs ~]# cat /var/lib/nfs/etab 
/data	172.16.1.0/24(rw,sync,wdelay,hide,nocrossmnt,secure,root_squash,all_squash,no_subtree_check,secure_locks,acl,no_pnfs,anonuid=65534,anongid=65534,sec=sys,rw,secure,root_squash,all_squash)

文件服务器nfs

rsyncd客户端

# 安装rsyncd，rsync守护进程
[root@backup ~]# yum install -y rsyncd

# 创建密码文件 
[root@backup ~]# echo '123456' > /etc/rsync.passwd
[root@backup ~]# cat /etc/rsync.passwd 
123456
# 将密码文件的权限改成600
[root@backup ~]# chmod 600 /etc/rsync.passwd 

# 启动rsync
[root@backup ~]# systemctl start rsyncd
# 检查启动情况
[root@backup ~]# netstat -lntup | grep rsync
tcp        0      0 0.0.0.0:873             0.0.0.0:*               LISTEN      1149/rsync 
tcp6       0      0 :::873                  :::*                    LISTEN      1149/rsync 
[root@backup ~]# ps aux | grep rsync
root       1149  0.0  0.1 114748  1124 ?        Ss   02:54   0:00 /usr/bin/rsync --daemon --no-detach

NFS服务端

	1>#安装NFS和rpcbind
[root@nfs ~]# yum install -y nfs-utils rpcbind
#如果是centos6需要单独安装rpcbind，centos7可以不单独安装

	2>#配置/etc/exports
NFS服务程序的配置文件为/etc/exports，需要严格按照共享目录的路径 允许访问的NFS客户端（共享权限参数）格式书写，定义要共享的目录与相应的权限，具体书写方式如下图所示。
[root@nfs ~]# vim /etc/exports
/data 172.16.1.0/24(rw,sync,all_squash)
| 语法     | /data      | 172.16.1.0/24        | (rw,sync,all_squash)      |
| -------- | ---------- | -------------------- | ------------------------- |
| 语法含义 | 共享的目录 | 允许连接的客户端网段 | 允许的操作（参数1,参数2） |

	3>#创建数据目录 用于挂载到web服务器
[root@nfs ~]# mkdir /data
[root@nfs ~]# chown -R gjs.gjs /data

	4>#启动NFS服务
[root@nfs ~]# systemctl start rpcbind nfs-server
#如果是centos6，启动时必须先启动rpcbind，centos7会自动启动
#验证启动
[root@nfs ~]# ps -ef | grep nfs

	5>#验证NFS配置
[root@nfs ~]# cat /var/lib/nfs/etab 
/data	172.16.1.0/24(rw,sync,wdelay,hide,nocrossmnt,secure,root_squash,all_squash,no_subtree_check,secure_locks,acl,no_pnfs,anonuid=65534,anongid=65534,sec=sys,rw,secure,root_squash,all_squash)

sersync服务

# 安装rsync和inotify
[root@nfs01 ~]# yum install rsync inotify-tools -y
# sersync文件放入指定目录
[root@nfs01 ~]# wget https://raw.githubusercontent.com/wsgzao/sersync/master/sersync2.5.4_64bit_binary_stable_final.tar.gz
[root@nfs ~]# tar xf sersync2.5.4_64bit_binary_stable_final.tar.gz
[root@nfs ~]# mv GNU-Linux-x86 /usr/local/sersync


# 配置sersync配置文件
[root@nfs ~]# vim /usr/local/sersync/confxml.xml 
<?xml version="1.0" encoding="ISO-8859-1"?>
<head version="2.5">
    <host hostip="localhost" port="8008"></host>
    <debug start="false"/>
    <fileSystem xfs="false"/>
    <filter start="false">
	<exclude expression="(.*).svn"></exclude>
	<exclude expression="(.*).gz"></exclude>
	<exclude expression="^info/*"></exclude>
	<exclude expression="^static/*"></exclude>
    </filter>
    <inotify>
	<delete start="true"/>
	<createFolder start="true"/>
	<createFile start="true"/>
	<closeWrite start="true"/>
	<moveFrom start="true"/>
	<moveTo start="true"/>
	<attrib start="true"/>
	<modify start="true"/>
    </inotify>

    <sersync>
	<localpath watch="/web_upload">
	    <remote ip="172.16.1.41" name="upload"/>
	    <!--<remote ip="192.168.8.39" name="tongbu"/>-->
	    <!--<remote ip="192.168.8.40" name="tongbu"/>-->
	</localpath>
	<rsync>
	    <commonParams params="-artuz"/>
	    <auth start="true" users="gjs_backup" passwordfile="/etc/rsync.passwd"/>
	    <userDefinedPort start="false" port="874"/><!-- port=874 -->
	    <timeout start="false" time="100"/><!-- timeout=100 -->
	    <ssh start="false"/>
	</rsync>
	<failLog path="/tmp/rsync_fail_log.sh" timeToExecute="60"/><!--default every 60mins execute once-->
	<crontab start="false" schedule="600"><!--600mins-->
	    <crontabfilter start="false">
		<exclude expression="*.php"></exclude>
		<exclude expression="info/*"></exclude>
	    </crontabfilter>
	</crontab>
	<plugin start="false" name="command"/>
    </sersync>

    <plugin name="command">
	<param prefix="/bin/sh" suffix="" ignoreError="true"/>	<!--prefix /opt/tongbu/mmm.sh suffix-->
	<filter start="false">
	    <include expression="(.*).php"/>
	    <include expression="(.*).sh"/>
	</filter>
    </plugin>

    <plugin name="socket">
	<localpath watch="/opt/tongbu">
	    <deshost ip="192.168.138.20" port="8009"/>
	</localpath>
    </plugin>
    <plugin name="refreshCDN">
	<localpath watch="/data0/htdocs/cms.xoyo.com/site/">
	    <cdninfo domainname="ccms.chinacache.com" port="80" username="xxxx" passwd="xxxx"/>
	    <sendurl base="http://pic.xoyo.com/cms"/>
	    <regexurl regex="false" match="cms.xoyo.com/site([/a-zA-Z0-9]*).xoyo.com/images"/>
	</localpath>
    </plugin>
</head>


# 创建密码文件
[root@nfs ~]# echo 123456 > /etc/rsync.password
[root@nfs ~]# chmod 600 /etc/rsync.password

# 启动
# 查看启动参数
[root@nfs ~]# /usr/local/sersync/sersync2 -h
set the system param
execute：echo 50000000 > /proc/sys/fs/inotify/max_user_watches
execute：echo 327679 > /proc/sys/fs/inotify/max_queued_events
parse the command param
_______________________________________________________
参数-d:启用守护进程模式
参数-r:在监控前，将监控目录与远程主机用rsync命令推送一遍
c参数-n: 指定开启守护线程的数量，默认为10个
参数-o:指定配置文件，默认使用confxml.xml文件
参数-m:单独启用其他模块，使用 -m refreshCDN 开启刷新CDN模块
参数-m:单独启用其他模块，使用 -m socket 开启socket模块
参数-m:单独启用其他模块，使用 -m http 开启http模块
不加-m参数，则默认执行同步程序

# 指定配置文件（同步多个）
[root@nfs /web_upload]# /usr/local/sersync/sersync2 -dro /usr/local/sersync/confxml.xml
set the system param
execute：echo 50000000 > /proc/sys/fs/inotify/max_user_watches
execute：echo 327679 > /proc/sys/fs/inotify/max_queued_events
parse the command param
option: -d 	run as a daemon
option: -r 	rsync all the local files to the remote servers before the sersync work
option: -o 	config xml name：  /usr/local/sersync/confxml.xml
daemon thread num: 10
parse xml config file
host ip : localhost	host port: 8008
will ignore the inotify createFile event 
daemon start，sersync run behind the console 
use rsync password-file :
user is	gjs_backup
passwordfile is 	/etc/rsync.passwd
config xml parse success
please set /etc/rsyncd.conf max connections=0 Manually
sersync working thread 12  = 1(primary thread) + 1(fail retry thread) + 10(daemon sub threads) 
Max threads numbers is: 22 = 12(Thread pool nums) + 10(Sub threads)
please according your cpu ，use -n param to adjust the cpu rate
------------------------------------------
rsync the directory recursivly to the remote servers once
working please wait...
execute command: cd /web_upload && rsync -artuz -R --delete ./ gjs_backup@172.16.1.41::upload --password-file=/etc/rsync.passwd >/dev/null 2>&1 
run the sersync: 
watch path is: /web_upload

用户服务器web

配置httpd服务

	1># 安装httpd和php服务
[root@web01 ~]# yum install -y httpd php

	2># 配置httpd文件
[root@web01 ~]# rz kaoshi.zip
[root@web01 ~]# unzip kaoshi.zip -d /var/www/html/
[root@web01 ~]# vim /etc/httpd/conf/httpd.conf
User gjs
Group gjs

	3># 启服务
[root@web01 ~]# systemctl start httpd

	4># 修改权限
[root@web01 ~]# chown -R gjs.gjs /var/www/html/

rsyncd客户端

	1># 安装rsyncd，rsync守护进程
[root@backup ~]# yum install -y rsyncd

	2># 创建目录
[root@backup ~]# mkdir /backup

	3># 创建密码文件 
[root@backup ~]# echo '123456' > /etc/rsyncd.passwd
[root@backup ~]# cat /etc/rsyncd.passwd 
123456
	4># 将密码文件的权限改成600
[root@backup ~]# chmod 600 /etc/rsyncd.passwd 

	5># 启动rsync
[root@backup ~]# systemctl start rsyncd

	6># 检查启动情况
[root@backup ~]# netstat -lntup | grep rsync
tcp        0      0 0.0.0.0:873             0.0.0.0:*               LISTEN      1149/rsync          
tcp6       0      0 :::873                  :::*                    LISTEN      1149/rsync 
[root@backup ~]# ps aux | grep rsync
root       1149  0.0  0.1 114748  1124 ?        Ss   02:54   0:00 /usr/bin/rsync --daemon --no-detach

NFS客户端

	1>#安装NFS和rpcbind
[root@nfs ~]# yum install -y nfs-utils rpcbind

	2>#查看挂载点并挂载
[root@web01 ~]# showmount -e 172.16.1.31
Export list for 172.16.1.31:
/web_upload 172.16.1.0/24

	3>#启动rpcbind
[root@web01 ~]# systemctl start rpcbind 

	4>#挂载测试
[root@web01 ~]# mount -t nfs 172.16.1.31:/web_upload /var/www/html/upload

	5># 验证是否挂载成功
[root@web01 ~]# df -h
172.16.1.31:/web_upload   16G  1.7G   15G  11% /var/www/html/upload

	6># 查看nfs与web端的上传文件
[root@web01 ~]# ll /var/www/html/upload
[root@nfs ~]# ll /web_upload/

NFS故障

	# nfs出现故障
[root@nfs ~]# systemctl stop nfs

	# 切换挂载机器
[root@web01 ~]# umount -lf /var/www/html/upload
[root@web01 ~]# mount -t nfs 172.16.1.41:/data /var/www/html/upload
	#浏览器上传文件
[root@web01 /var/www/html/upload]# ll
total 720
-rw-r--r-- 1 gjs gjs 736514 Aug 16 20:57 22_web02.jpg
[root@nfs /web_upload]# ll
total 720
-rw-r--r-- 1 gjs gjs 736514 Aug 16 20:57 22_web02.jpg
[root@backup /web_upload]# ll
total 720
-rw-r--r-- 1 gjs gjs 736514 Aug 16 20:57 22_web02.jpg

三服务详细步骤

各服务器环境

主机	IP	安装服务
web01	172.16.1.7	httpd php rsyncd nfs-utils rpcbind
NFS	172.16.1.31	rsyncd nfs-utils rpcbind
backup	172.16.1.41	rsyncd nfs-utils rpcbind

1、创建gjs用户和组

[root@host ~]# groupadd -g 666 gjs
[root@host ~]# useradd -u 666 -g 666 gjs

2、关闭防火墙和selinux

[root@nfs ~]# systemctl stop firewalld
[root@nfs ~]# systemctl disable firewalld
[root@nfs ~]# getenforce	查看是否开启
[root@nfs ~]# setenforce 0
[root@nfs ~]# vim /etc/selinux/config
SELINUX=disabled

3、NFS服务端配置

	1>#安装NFS和rpcbind
[root@nfs ~]# yum install -y nfs-utils rpcbind
#如果是centos6需要单独安装rpcbind，centos7可以不单独安装
	
	2>#创建数据目录 用于挂载到web服务器
[root@nfs ~]# mkdir /web_upload
[root@nfs ~]# chown -R gjs.gjs /web_upload
	
	3>#配置/etc/exports
[root@nfs ~]# vim /etc/exports
/web_upload 172.16.1.0/24(rw,sync,all_squash,anonuid=666,anongid=666)

	4>#启动NFS服务
[root@nfs ~]# systemctl start rpcbind nfs-server
#如果是centos6，启动时必须先启动rpcbind，centos7会自动启动
#验证启动
[root@nfs ~]# ps -ef | grep nfs

	5>#验证NFS配置
[root@nfs ~]# cat /var/lib/nfs/etab 
/data	172.16.1.0/24(rw,sync,wdelay,hide,nocrossmnt,secure,root_squash,all_squash,no_subtree_check,secure_locks,acl,no_pnfs,anonuid=65534,anongid=65534,sec=sys,rw,secure,root_squash,all_squash)

4、httpd服务端配置

	1># 安装httpd和php服务
[root@web01 ~]# yum install -y httpd php

	2># 配置httpd文件
[root@web01 ~]# rz kaoshi.zip
[root@web01 ~]# unzip kaoshi.zip -d /var/www/html/
[root@web01 ~]# vim /etc/httpd/conf/httpd.conf
User gjs
Group gjs

	3># 修改权限
[root@web01 ~]# chown -R gjs.gjs /var/www/html/

	4># 启服务
[root@web01 ~]# systemctl start httpd
	
	5># 浏览器上传文件
[root@web01 ~]# ll /var/www/html/upload

5、nfs客户端配置

	1>#安装NFS和rpcbind
[root@nfs ~]# yum install -y nfs-utils rpcbind

	2>#查看挂载点并挂载
[root@web01 ~]# showmount -e 172.16.1.31
Export list for 172.16.1.31:
/web_upload 172.16.1.0/24

	3>#启动rpcbind
[root@web01 ~]# systemctl start rpcbind 

	4>#挂载测试
[root@web01 ~]# mount -t nfs 172.16.1.31:/web_upload /var/www/html/upload

	5># 验证是否挂载成功
[root@web01 ~]# df -h
172.16.1.31:/web_upload   16G  1.7G   15G  11% /var/www/html/upload

6、上传测试

# 浏览器10.0.0.7上传文件
# 查看nfs与web端的文件
[root@web01 ~]# ll /var/www/html/upload
[root@nfs ~]# ll /web_upload/

7、rsyncd服务端配置

	1># 安装rsyncd，rsync的守护进程
[root@backup ~]# yum install -y rsyncd

	2># 写配置文件
[root@backup ~]# vim /etc/rsyncd.conf 
uid = gjs
gid = gjs
port = 873
fake super = yes
use chroot = no
max connections = 200
timeout = 600
ignore errors
read only = false
list = false
auth users = gjs_backup
secrets file = /etc/rsyncd.passwd
log file = /var/log/rsyncd.log
#################################
[upload]
comment = welcome to backup!
path = /web_upload

	3># 创建备份的目录和密码文件
[root@backup ~]# mkdir /web_upload
[root@backup ~]# chown -R gjs.gjs /web_upload/
[root@backup ~]# echo 'gjs_backup:123456' > /etc/rsyncd.passwd
[root@backup ~]# cat /etc/rsyncd.passwd 
gjs_backup:123456
[root@backup ~]# chmod 600 /etc/rsyncd.passwd 

	4># 启动rsyncd并检查
[root@backup ~]# systemctl start rsyncd
[root@backup ~]# netstat -lntup | grep rsync
[root@backup ~]# ps aux | grep rsync
root       1149  0.0  0.1 114748  1124 ?        Ss   02:54   0:00 /usr/bin/rsync --daemon --no-detach

	5># NFS推送文件测试rsyncd

8、NFS推送文件测试

# 确保rsyncd服务正常运行
[root@nfs /web_upload]# rsync -axz  ./ gjs_backup@172.16.1.41::upload --password-file=/etc/rsync.passwd

9、sersync服务端配置

	1># 安装rsync和inotify
[root@nfs01 ~]# yum install rsync inotify-tools -y
	2># sersync文件放入指定目录
[root@nfs01 ~]# wget https://raw.githubusercontent.com/wsgzao/sersync/master/sersync2.5.4_64bit_binary_stable_final.tar.gz
[root@nfs ~]# tar xf sersync2.5.4_64bit_binary_stable_final.tar.gz
[root@nfs ~]# mv GNU-Linux-x86 /usr/local/sersync


	3># 配置sersync配置文件
[root@nfs ~]# vim /usr/local/sersync/confxml.xml 
<?xml version="1.0" encoding="ISO-8859-1"?>
<head version="2.5">
    <host hostip="localhost" port="8008"></host>
    <debug start="false"/>
    <fileSystem xfs="false"/>
    <filter start="false">
	<exclude expression="(.*).svn"></exclude>
	<exclude expression="(.*).gz"></exclude>
	<exclude expression="^info/*"></exclude>
	<exclude expression="^static/*"></exclude>
    </filter>
    <inotify>
	<delete start="true"/>
	<createFolder start="true"/>
	<createFile start="true"/>
	<closeWrite start="true"/>
	<moveFrom start="true"/>
	<moveTo start="true"/>
	<attrib start="true"/>
	<modify start="true"/>
    </inotify>

    <sersync>
	<localpath watch="/web_upload">
	    <remote ip="172.16.1.41" name="upload"/>
	    <!--<remote ip="192.168.8.39" name="tongbu"/>-->
	    <!--<remote ip="192.168.8.40" name="tongbu"/>-->
	</localpath>
	<rsync>
	    <commonParams params="-artuz"/>
	    <auth start="true" users="gjs_backup" passwordfile="/etc/rsync.passwd"/>
	    <userDefinedPort start="false" port="874"/><!-- port=874 -->
	    <timeout start="false" time="100"/><!-- timeout=100 -->
	    <ssh start="false"/>
	</rsync>
	<failLog path="/tmp/rsync_fail_log.sh" timeToExecute="60"/><!--default every 60mins execute once-->
	<crontab start="false" schedule="600"><!--600mins-->
	    <crontabfilter start="false">
		<exclude expression="*.php"></exclude>
		<exclude expression="info/*"></exclude>
	    </crontabfilter>
	</crontab>
	<plugin start="false" name="command"/>
    </sersync>

    <plugin name="command">
	<param prefix="/bin/sh" suffix="" ignoreError="true"/>	<!--prefix /opt/tongbu/mmm.sh suffix-->
	<filter start="false">
	    <include expression="(.*).php"/>
	    <include expression="(.*).sh"/>
	</filter>
    </plugin>

    <plugin name="socket">
	<localpath watch="/opt/tongbu">
	    <deshost ip="192.168.138.20" port="8009"/>
	</localpath>
    </plugin>
    <plugin name="refreshCDN">
	<localpath watch="/data0/htdocs/cms.xoyo.com/site/">
	    <cdninfo domainname="ccms.chinacache.com" port="80" username="xxxx" passwd="xxxx"/>
	    <sendurl base="http://pic.xoyo.com/cms"/>
	    <regexurl regex="false" match="cms.xoyo.com/site([/a-zA-Z0-9]*).xoyo.com/images"/>
	</localpath>
    </plugin>
</head>


	4># 创建密码文件
[root@nfs ~]# echo 123456 > /etc/rsync.password
[root@nfs ~]# chmod 600 /etc/rsync.password

	5># 查看启动参数
[root@nfs ~]# /usr/local/sersync/sersync2 -h
set the system param
execute：echo 50000000 > /proc/sys/fs/inotify/max_user_watches
execute：echo 327679 > /proc/sys/fs/inotify/max_queued_events
parse the command param
_______________________________________________________
参数-d:启用守护进程模式
参数-r:在监控前，将监控目录与远程主机用rsync命令推送一遍
c参数-n: 指定开启守护线程的数量，默认为10个
参数-o:指定配置文件，默认使用confxml.xml文件
参数-m:单独启用其他模块，使用 -m refreshCDN 开启刷新CDN模块
参数-m:单独启用其他模块，使用 -m socket 开启socket模块
参数-m:单独启用其他模块，使用 -m http 开启http模块
不加-m参数，则默认执行同步程序

	6># 指定配置文件（同步多个）
[root@nfs /web_upload]# /usr/local/sersync/sersync2 -dro /usr/local/sersync/confxml.xml
set the system param
execute：echo 50000000 > /proc/sys/fs/inotify/max_user_watches
execute：echo 327679 > /proc/sys/fs/inotify/max_queued_events
parse the command param
option: -d 	run as a daemon
option: -r 	rsync all the local files to the remote servers before the sersync work
option: -o 	config xml name：  /usr/local/sersync/confxml.xml
daemon thread num: 10
parse xml config file
host ip : localhost	host port: 8008
will ignore the inotify createFile event 
daemon start，sersync run behind the console 
use rsync password-file :
user is	gjs_backup
passwordfile is 	/etc/rsync.passwd
config xml parse success
please set /etc/rsyncd.conf max connections=0 Manually
sersync working thread 12  = 1(primary thread) + 1(fail retry thread) + 10(daemon sub threads) 
Max threads numbers is: 22 = 12(Thread pool nums) + 10(Sub threads)
please according your cpu ，use -n param to adjust the cpu rate
------------------------------------------
rsync the directory recursivly to the remote servers once
working please wait...
execute command: cd /web_upload && rsync -artuz -R --delete ./ gjs_backup@172.16.1.41::upload --password-file=/etc/rsync.passwd >/dev/null 2>&1 
run the sersync: 
watch path is: /web_upload

	7># 手动推送一遍
[root@nfs ~]# cd /web_upload && rsync -artuz -R --delete ./ gjs_backup@172.16.1.41::upload --password-file=/etc/rsync.passwd

10、测试三服务器是否同步

	#浏览器上传文件
[root@web01 ~]# ll /var/www/html/upload
total 720
-rw-r--r-- 1 gjs gjs 736514 Aug 16 20:57 22_web02.jpg
[root@nfs ~]# ll /web_upload
total 720
-rw-r--r-- 1 gjs gjs 736514 Aug 16 20:57 22_web02.jpg
[root@backup ~]# ll /web_upload
total 720
-rw-r--r-- 1 gjs gjs 736514 Aug 16 20:57 22_web02.jpg