Sersync Real-time synchronization

1, to achieve the purpose:

Synchronize the data in the/data directory in host A in real time to the/data directory in Host B

2. Download the required software

sersync2.5.4

Https://sersync.googlecode.com/files/sersync2.5.4_64bit_binary_stable_final.tar.gz

3. Configuration

On Host A:

After decompression only two files, SERSYNC2, command execution file; confxml.xml, config file

[Email protected] sersync]# pwd

/usr/local/sersync

[[email protected] sersync]# ls

Confxml.xml SERSYNC2

View the Help information for the command execution file;

[Email protected] 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

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Parameter-D: Enable daemon mode

Parameter-r: Push the monitoring directory and the remote host with the rsync command before monitoring

C parameter-N: Specifies the number of daemon threads to open, default is 10

Parameter-o: Specifies the configuration file, using the Confxml.xml file by default

Parameter-M: separate enable other modules, use-M refreshcdn to turn on Refresh CDN Module

Parameter-M: enable other modules separately and open the socket module using the-m socket

Parameter-M: separate enable other modules, use-M http to turn on HTTP module

The Synchronizer is executed by default without the-m parameter

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With the help of the command, you know that you want to implement the synchronization function, as long as you execute the following command.

./sersync2-d-R

If you have multiple directories that need to be synchronized, you can specify a different profile with the-o option as long as there are multiple processes. For example, on-line configuration:

/usr/local/sersync/bin/sersync-d-o/usr/local/sersync/conf/download.xml

/usr/local/sersync/bin/sersync-d-o/usr/local/sersync/conf/ddbill.xml

/usr/local/sersync/bin/sersync-d-o/usr/local/sersync/conf/dinpay.xml

Configuration file confxml.xml parameter configuration

Implementing sync Main configuration 23-44 rows, <sersync>.....</sersync> content

The contents of the default configuration file are as follows:

      <sersync>         < Localpath watch= "/opt/tongbu" >              <remote ip= "127.0.0.1"  name= "tongbu1"/>              <!--<remote ip= "192.168.8.39"  name= "Tongbu"/>-->              <!--<remote ip= " 192.168.8.40 " name=" Tongbu "/>-->         </ localpath>         <rsync>              <commonparams params= "-artuz"/>              <auth start= "false"  users= "root"  passwordfile= "/etc/rsync.pas"/&GT;&NBsp;            <userdefinedport start= " False " port=" 874 "/><!-- port=874 -->             <timeout start= "false"  time= "/><"!-- timeout=100 -- >             <ssh start= "false"/ >         </rsync>          <faillog path= "/tmp/rsync_fail_log.sh"  timetoexecute= "/><!--Default  every 60mins execute once-->         < Crontab start= "false"  schedule= "><!--600mins-->              <crontabfilter start= "false" >                  <exclude expression= "*.php" ></exclude>                  <exclude  expression= "info/*" ></exclude>              </crontabfilter>         </crontab>          <plugin start= "false"  name= "command"/>      </sersync>

Simple implementation of the function, in fact, as long as configuration

<localpath watch= "/opt/tongbu" > <remote ip= "127.0.0.1" name= "tongbu1"/> <!--<rem         OTE ip= "192.168.8.39" name= "Tongbu"/>--> <!--<remote ip= "192.168.8.40" name= "Tongbu"/>--> </localpath>

These are just a few lines.

Watch is followed by the local directory to be synchronized to the remote

IP is followed by the IP address of the remote host; Name followed by the module name in the rsyncd.conf file in rsync daemon mode in the remote host

If you want to sync to more than one machine, write a <remote> label on each machine

The configuration file in host A is modified as follows:

[Email protected] sersync]# sed-n ' 24,28p ' confxml.xml

<localpath watch= "/data" >

<remote ip= "192.168.2.175" name= "Data"/>

</localpath>

<rsync>

<commonparams params= "-artuz"/>

[Email protected] sersync]#

On Host B:

Configure the/data directory as the module name and directory in Rsync daemon.

rsyncd.conf simple configuration is as follows

[Email protected] data]# cat/etc/rsyncd.conf

Uid=root

Gid=root

Max connections=36000

Use Chroot=no

Log File=/var/log/rsyncd.log

PID File=/var/run/rsyncd.pid

Lock File=/var/run/rsyncd.lock

[Data]

Path=/data

#ignore Errors (Open will report an error in the log)

Read Only = no

Hosts allow = 192.168.2.0/24

Hosts deny = *

After the configuration file has been modified, you can start the rsync daemon mode

[Email protected] data]# rsync--daemon

[Email protected] data]# Ss-tlnp|grep 873

0 5::: 873:::* Users: (("rsync", 10042,5)

0 5 *:873 *:* Users: (("rsync", 10042,4)

[Email protected] data]#

So the Host B is configured to complete ~

Now go back to host A to execute the./sersync2-d-r command to start real-time synchronization.

[Email protected] sersync]#/sersync2-d-R

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

Daemon Thread Num:10

Parse XML config file

Host Ip:localhost host port:8008

Daemon Start,sersync run behind the console

Config XML parse success

Please set/etc/rsyncd.conf Max connections=0 manually

Sersync working thread 1 (primary thread) + 1 (fail retry thread) + Ten (daemon sub threads)

Max Threads Numbers is:22 = (Thread pool nums) + ten (Sub threads)

According your CPU, use-n param to adjust the CPU rate

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Rsync the directory recursivly to the remote servers once

Working Please wait ...

Execute Command:cd/data && rsync-artuz-r--delete./192.168.2.175::d ata >/dev/null 2>&1

Run the Sersync:

Watch path is:/data

[Email protected] sersync]# Ps-ef|grep SERSYNC2

Root 21640 1 0 03:30? 00:00:00./sersync2-d-R

4. Demo

Now we go to the/data directory in host A and Host B to do some simple demo operations

[[email protected]/-19:38:31] #ls/data

[Email protected]/-19:38:38]#

[[email protected]/-19:38:32] #ls/data

[Email protected]/-19:38:42]#

Increase

[[email protected]/-19:39:48] #cd data

[[email protected] data-19:39:53] #touch 1 2 3 4 5

[[email protected] data-19:40:15] #ls

1 2 3) 4 5

[Email protected] data-19:40:21]#

[[email protected]/-19:39:49] #cd data

[[email protected] data-19:39:56] #ls

1 2 3) 4 5

[Email protected] data-19:40:23]#

By deleting

[[email protected] data-19:41:43] #rm 1 2 3-f

[[email protected] data-19:41:49] #ls

4 5

[Email protected] data-19:41:50]#

[[email protected] data-19:40:23] #ls

4 5

Change

[[email protected] data-19:41:50] #echo 44444444 > 4

[[email protected] data-19:48:38] #echo 55555555 > 5

[[email protected] data-19:48:46] #cat 4 5

44444444

55555555

[Email protected] data-19:48:53]#

[[email protected] data-19:49:14] #cat 4

44444444

[[email protected] data-19:49:16] #cat 5

55555555

[Email protected] data-19:49:18]#

Sersync Real-time synchronization