Linux File Real-Time Synchronization

RsyncPull

Lab Conditions

RsyncClient: content publishing node 192.168.71.20)

RsyncServer1: Service Node 1 (192.168.71.134)

RsyncServer2: Service Node 2 (192.168.71.132)

Synchronization directory

RsyncClient:/web/wwwroot/

RsyncServer1:/web1/wwwroot/

RsyncServer2:/web2/wwwroot/

Wireless network password: 123 qazwsx

Lab requirements

The content publishing node is responsible for generating static pages of user data, and updating static pages to the service node and service node 2 in real time.

Network Topology:

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Lab procedure

1: Content publishing node 192.168.71.20.)

[Root @ localhost ~] # Cd Desktop/

[Root @ localhost Desktop] # tar zxfrsync-3.0.9.tar.gz-C/opt/

[Root @ localhost Desktop] # cd/opt/rsync-3.0.9/

[Root @ localhost inotify-tools-3.13] #./configure; make & make install

[Root @ localhost ~] # Cd Desktop/

[Root @ localhost Desktop] # tar xfz inotify-tools-3.13.tar.gz-C/opt/

[Root @ localhost Desktop] # cd/opt/inotify-tools-3.13/

[Root @ localhost inotify-tools-3.13] #./configure; make & make install

After compilation is successful

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Sometimes you may prompt that Gcc is not in the path.

Solution:

Yum-y install gcc *

Now you can re-compile and install it.

[Root @ localhost ~] # Cat/web/wwwroot/inotifyrsync. sh

#! /Bin/bash

Host1 = 192.168.71.134

Src =/web/wwwroot/

Dst1 = web1

User1 = web1user

Host2 = 192.168.71.132

Src =/web/wwwroot/

Dst2 = web2

User2 = web2user

/Usr/local/bin/inotifywait-mrq -- timefmt '% d/% m/% y % H: % m' -- format' % T % w % f % e'-e modify, delete, create, attrib $ src | while read files

Do

/Usr/bin/rsync-vzrtopg -- delete -- progress -- password-file =/etc/server1.pass $ src $ user1 @ $ host1: $ dst1

/Usr/bin/rsync-vzrtopg -- delete -- progress -- password-file =/etc/server2.pass $ src $ user2 @ $ host2: $ dst2

Echo "was rsynced">/tmp/rsync. log2> & 1

Done

This script is stored on the server or the Publishing Server that requires active synchronization.) I call it rsyncClient.End

This script can also be written separately. Note that/etc/server. passAnd/etc/server2.passTwo rsyncserversStored in rysncClientI tried to put the two passwords in the same configuration file, but I couldn't find them. So I wrote them separately.

[Root @ localhost ~] # Mkdir/web/wwwroot/-p

[Root @ localhost ~] # Chmod 755/web/wwwroot/inotifyrsync. sh

[Root @ localhost ~] # Cat/etc/server1.pass

123

[Root @ localhost ~] # Cat/etc/server2.pass

321

[Root @ localhost ~] # Chmod 600/etc/server1.pass

[Root @ localhost ~] # Chmod 600/etc/server2.pass

[Root @ localhost ~] # Ll/etc/server1.pass

-Rw ------- 1 root 4 Mar 24/etc/server1.pass

[Root @ localhost ~] # Ll/etc/server2.pass

-Rw ------- 1 root 4 Mar 24/etc/server2.pass

[Root @ localhost ~] #/Web/wwwroot/inotifyrsync. sh &Transfer to the background as a daemon process

[Root @ localhost ~] # Echo "/web/wwwroot/inotifyrsync. sh &">/etc/rc. localAutomatic startup

2: Service Node 1192.168.71.134)

Cd Desktop/

Tar zxf rsync-3.0.9.tar.gz-C/opt/

Rsync-3.0.9/cd/opt/

./Configure; make & make install

[Root @ localhost ~] # Cat/etc/rsyncd. conf

Uid = nobody

Gid = nobody

Use chroot = no

Max connections = 10

Strict modes = yes

Pid file =/var/run/rsyncd. pid

Lock file =/var/run/rsync. lock

Log file =/var/log/rsyncd. log

[Web1]

Path =/web1/wwwroot/

Comment = web1 file

Ignore errors

Read only = no

Write only = no

Hosts allow = 192.168.71.133

Hosts deny = *

List = false

Uid = root

Gid = root

Auth users = web1user

Secrets file =/etc/web1.pass

[Root @ localhost ~] # Mkdir/web1/wwwroot/-p

[Root @ localhost ~] # Chmod 755/web1/wwwroot/

[Root @ localhost ~] # Touch/etc/web1.pass

[Root @ localhost ~] # Vi/etc/web1.pass

Web 1user: 321

[Root @ localhost ~] # Chmod 600/etc/web1.pass

[Root @ localhost ~] #/Usr/local/bin/rsync -- daemonEnable rsyncDaemon

[Root @ localhost ~] # Ps-ef | grep rsyncCheck whether the daemon is enabled

Root 16592 1 0 00:46? 00:00:00/usr/local/bin/rsync -- daemon

[Root @ localhost ~] # Lsof-I: 873View default port 873Enabled or not

COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME

Rsync 16592 root 4u IPv6 65197 TCP *: rsync (LISTEN)

Rsync 16592 root 5u IPv4 65198 TCP *: rsync (LISTEN)

[Root @ localhost ~] # Echo "/usr/local/bin/rsync-daemon">/etc/rc. localSet Automatic startup

3: Service Node 2192.168.71.132)

Cd Desktop/

Tar zxf rsync-3.0.9.tar.gz-C/opt/

Rsync-3.0.9/cd/opt/

./Configure; make & make install

[Root @ localhost ~] # Cat/etc/rsyncd. conf

Uid = nobody

Gid = nobody

Use chroot = no

Max connections = 10

Strict modes = yes

Pid file =/var/run/rsyncd. pid

Lock file =/var/run/rsync. lock

Log file =/var/log/rsyncd. log

[Web2]

Path =/web2/wwwroot/

Comment = web2 file

Ignore errors

Read only = no

Write only = no

Hosts allow = 192.168.71.133

Hosts deny = *

List = false

Uid = root

Gid = root

Auth users = web2user

Secrets file =/etc/web2.pass

[Root @ localhost ~] # Mkdir/web2/wwwroot/-p

[Root @ localhost ~] # Chmod 755/web2/wwwroot/

[Root @ localhost ~] # Touch/etc/web2.pass

[Root @ localhost ~] # Vi/etc/web2.pass

Web 2user: 321

[Root @ localhost ~] # Chmod 600/etc/web2.pass

[Root @ localhost ~] #/Usr/local/bin/rsync-daemonEnable rsyncDaemon

[Root @ localhost ~] # Ps-ef | grep rsyncCheck whether the daemon is enabled

Root 16592 1 0 00:46? 00:00:00/usr/local/bin/rsync -- daemon

[Root @ localhost ~] # Lsof-I: 873View default port 873Enabled or not

COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME

Rsync 16592 root 4u IPv6 65197 TCP *: rsync (LISTEN)

Rsync 16592 root 5u IPv4 65198 TCP *: rsync (LISTEN)

[Root @ localhost ~] # Echo "/usr/local/bin/rsync-daemon">/etc/rc. localSet Automatic startup

4: Test

Create a file under/web/wwwroot/on the content publishing node. Check whether the file can be synchronized in real time at the service node.

Note:

1: During the test, the following error will be prompted when the permission of the password file such as/etc/web2.pass is incorrect.

Rsync error: error starting client-serverprotocol (code 5) at main. c (1296) [sender = 2.6.8]

2: If the following error is reported, it is likely that iptables firewall problems are all firewall problems)

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You can disable the firewalls of these three machines to check whether the firewalls are at fault.

After the firewall is turned off, if real-time update can be implemented, data packets are intercepted by the firewall.

Therefore, you need to set a firewall so that rsync can pass through

First, modify the content on the content publishing node.

1) vi/etc/sysconfig/iptables) write the rules to the configuration file to prevent policy invalidation after restart

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Note: This rule must be added before the REJECT rule.

2) service iptables restart Firewall

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