CentOS 6.5 rsync+inotify Real-time synchronization

Host name, IP:

Server 172.31.82.184

Client 172.31.82.185

Demand:

1, server Side "/data/server" as the client side "/data/client" Backup directory;

2, the realization of the function is the client side of the directory to do delete permission change operation, server can maintain real-time synchronization;

3. Turn off firewall and SELinux

Service Iptables Stop

Setenforce 0

First, configure the server side

1. Install rsync software

Yum Install-y rsync-y

2. Create rsync.conf configuration file, default that file does not exist

Vim/etc/rsyncd.conf

UID = Rootgid = Rootusechroot = Nomax Connections = 20timeout = 600pid File =/var/run/rsyncd.pidlock File =/var/run/rsyn C.locklog file =/var/log/rsyncd.log[web_log] # #此处是定义的模块名, and "Path =/data/server/" under Server for path =/data /server/ignore Errorsread = falsewriteonly = Falselist = falsehosts Allow = *auth users = backusersecrets File =/etc /rsync.password

3. Create a backup directory

Mkdir/data/server-p

4. Create rsync user name and password file

echo "backuser:123" >>/etc/rsync.password

5, for/etc/rsync.password authorization for 600

chmod 600/etc/rsync.password

6. Start the Rsync service and add boot automatically

/usr/bin/rsync--daemon &

echo "/usr/bin/rsync--daemon" >>/etc/rc.local

Second, configure the client side

1. Install rsync

Yum Install Rsync-y

2, set the rsync client password file, the client only need to set the Rsync synchronization password can not set the user name

echo "123" >/etc/rsync.password

3. Set the password file permissions to 600

chmod 600/etc/rsync.password

Configure Inotyfi

1. Install the base compilation package

Yum install-y gcc Lrzsz

Tar zxvf inotify-tools-3.14.tar.gz &&cd inotify-tools-3.14 &&./configure &&make && Make install

2. Create Client Side Synchronization directory

Mkdir-p/data/client

3. Test whether files can be synchronized on client side

Uploading files

RSYNC-VZRTOPG--progress/data/client/[Email protected]::server--password-file=/etc/rsync.password

Download file

RSYNC-VZRTOPG--progress [Email protected]::server/opt/--password-file=/etc/rsync.password

4, write a script implementation when the client side "/data/client" directory file changes, let the server node synchronize client data

#!/bin/bashsrc=/data/client/# #注意路径des1 =server # #注意路径host1 =172.31.82.184 # #server端ipuser1 =backuser # #同步数据使用的用户 /usr/local/bin/inotifywait-mrq--timefmt '%d/%m/%y%h:%m '--format '%T%w%f '-emodify,delete,create,attrib $src | While read FILEDO/USR/BIN/RSYNC-VZRTOPG--delete--progress $src [email protected] $host 1:: $des 1--password-file=/etc/ Rsync.passwordecho ' Date +%m.%d.%h%. M ' "${files} was rsynced" >>/var/log/rsync.log 2>&1done

5. Execute permissions for script

chmod +x/root/inotify.sh
6. Script execution in the background

/root/inotify.sh &

7. Add the script to the system self-boot file

echo "/root/inotify.sh" >>/etc/rc.local
8. Add files to client side to see if there is synchronization on server side

mkdir 11 22 33 44

Test Pass

Third, exclude files and directories that you do not want to sync

1, single file exclusion: For example I do not want to sync/opt/aa.php files, directly use--exclude "aa.php"

Multiple files and directories excluded--exclude-from= "/usr/local/src/exclude.list"

Script syntax:

vim/root/inotify.sh

#!/bin/bash
src=/data/client/
Des1=server
host1=172.31.82.184
User1=backuser
/usr/local/bin/inotifywait-mrq--timefmt '%d/%m/%y%h:%m '--format '%T%w%f '-emodify,delete,create,attrib $src | While read file
Do
/USR/BIN/RSYNC-VZRTOPG--delete--progress --exclude-from= "/usr/local/src/exclude.list" $src [email Protected] $host 1:: $des 1--password-file=/etc/rsync.password
Echo ' Date +%m.%d.%h%. M ' "${files} was rsynced" >>/var/log/rsync.log 2>&1
Done

2, the script will also need to create a file corresponding to the script, the following is not synchronized to the server node files and directories:

Vim /usr/local/src/exclude.list

Exclude
11
22
33

test.php

3. Kill script process running in background

Ps-elf |pgrep Inotify|xargs kill-9

4. Start the synchronization script

Sh/root/inotify.sh &

5. Set the upper limit of the watchs associated with each inotify instance, or you will get an error if you transfer too many files.

echo 30000000 >/proc/sys/fs/inotify/max_user_watches

Attention:

After the script is modified, you need to restart the background script:

Ps-elf |pgrep Inotify|xargs kill-9

Sh/root/inotify.sh &

This article is from the "david0512" blog, make sure to keep this source http://gjr0512.blog.51cto.com/6518687/1758117

CentOS 6.5 rsync+inotify Real-time synchronization