Shulou(Shulou.com)06/01 Report--

In this issue, the editor will bring you about how Linux can achieve real-time synchronization of local and remote remote data. The article is rich in content and analyzes and describes for you from a professional point of view. I hope you can get something after reading this article.

0x0 test environment

Headquarters production server and branch backup server are required to back up data in different places, the environment is as follows

* * centos 6.5 backup * production server directory: / home/zytest/files backup server directory: / home/zytest/files user / password: zytest/ zytest

Construction of 0x1 production server environment

0x1.1 installs gcc compiler and rsync

Yum install gcc rsync-y

0x1.2 copies inotify to the server and decompresses it

Cd / root tar xfvz inotify-tools-3.13.tar.gz

0x1.3 goes to the inotify directory to install

Cd inotify-tools-3.13./configuremakemake install / usr/local/bin/inotifywait # # check whether the installation is successful

Setting up 0x2 backup server environment

0x2.1 installs xinetd and rsync

Yum install xinetd rsync-y

0x3 the following: two servers synchronize their operations

Useradd-u 600 zytest passwd zytest zytest su-zytest-c 'mkdir / home/zytest/files' # # create a synchronization directory

Configure rsyncd on the 0x4 backup server

0x4.1 editor / etc/xinetd.d/rsync is modified as follows

Disable = yes = = > disable = noflags = IPv6 = > flags = IPv4server_args =-- daemon = = > server_args =-- daemon-- config=/etc/rsyncd.conf

0x4.2 edit / etc/rsyncd.conf and add the following script information

Uid = rootgid = rootuse chroot = nomax connections = 1000strict mode = yesport = 873pid file = / var/run/rsyncd.pid lock file = / var/run/rsyncd.lock log file = / var/log/rsyncd.log# following for user "zytest", change for other users [zytest] path = / home/zytestignore errorsauth users = zytestsecrets file = / home/rsync-dst.psread only = nolist = false

Ps: the rsyncd configuration file is on xinetd, so the backup server installs xinetd

0x4.3 writes the password to the calling password file and grants permissions

Echo zytest:zytest > > / home/rsync-dst.pschmod 600 / home/rsync-dst.ps

0x4.4 starts rsync through xinetd

/ etc/rc.d/init.d/xinetd restart

Configure inosync script files on the 0x5 master server

* * # Edit / root/inosync add script code * *

#! / bin/sh#chkconfig: 3 78 10 # This file exist from compileif [!-f / usr/local/bin/inotifywait] then echo "cannot start. File inotifywait NOT exist!" Exitfi # This file is runnable shell scriptif [!-f / usr/local/bin/inosync.so.1] then echo "contact administrator. Inosync.so.1 NOT exist!" Exitfi case "$1" in 'start') / usr/local/bin/inosync.so.1 &;' stop') pid= `ps-ef | grep-v grep | grep "inotifywait" | awk'{print $2} '`kill-9$ pid 2 > & 1X;' restart') $0 stop $0 start;; esac

0x5.2 gives the script permission to set boot up

Chmod axix / root/inosync cp / root/inosync / etc/rc.d/init.d

Main script file / root/inosync.so.1 for 0x5.3 configuration call

Rhost=** backup server IP**user=zytestsrc=/home/zytest/filesdst=zytest#dst corresponding to [zytest] in file / etc/rsyncd.conf on dst serverlog=/root/inosync.log/usr/local/bin/inotifywait-mrq-- timefmt'% d/%m/%y% HV% MVR% S'-- format'% T% w% f% e'- e close_write,create,move,delete Attrib $src | while read files do echo = = rsync begin = = > > $log rsync- avP-- password-file=/home/rsync-src.ps-- delete $src $user@$rhost::$dst > > $log 2 > & 1 echo-- rsyncd-- > $log date > > $log echo "${files} was rsynced" > > $log 2 > & 1 done

PS:% T is followed by a space between% f and% e

0x5.4 gives inosync.so.1 script permission to copy to / usr/local/bin

Chmod axix / root/inosync.so.1cp / root/inosync.so.1 / usr/local/bin

0x5.5 writes the password to the calling password file and grants permissions

Echo zytest > > / home/rsync-src.pschmod 600 / home/rsync-src.ps

0x6 target server sets inosync to automatically start and start the inosync service

Chkconfig-level 3 inosync on/etc/rc.d/init.d/inosync start

0x7 Test END

Create files and folders under the production server / home/zytest/files directory to see if the backup storage synchronizes the files and folders, and the synchronization is successful.

The process can be viewed through the log

Tail-f / root/inosync.log

At this point, this is the end of the article on the real-time synchronization of local and remote remote data by Linux through Rsync+Inotify.

This is how to realize the real-time synchronization of local and remote remote data in Linux shared by the editor. If you happen to have similar doubts, you might as well refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

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