Installation configuration for the Rsync mirroring Synchronization tool

The fundamentals of Rsync

Rsync uses the so-called "rsync algorithm" to synchronize files between local and remote two hosts, and this algorithm transmits only a different portion of two files, rather than sending it all at a time, so it's very fast.

The advantages of rsync

① can be mirrored to save the entire directory tree and file system;

② can be easy to maintain the original file permissions, time, soft and hard links;

③ without special permission can be installed;

④ optimized process, high file transfer efficiency;

⑤ can use rsh, ssh and other means to transfer files, of course, can also be connected through the direct socket;

⑥ Support for anonymous transmissions

Rsync Installation

Rsync Server 192.168.1.100

Rsync clinet 192.168.1.200

Yum install-y rsync adopts yum installation rsync

Getenforce See if the SELinux is turned on, if the value 1 indicates

Setenforce 0 shuts down SELinux and does not need to reboot the server

Restart Service:/etc/init.d/xinetd restart

Use Ps-ef |grep rsync to see if the Rsync service is open

Service-side configuration:

Rsync default configuration file does not exist, requires system administrator to create a new rsync configuration file

[Root@nagios SH] #vim/etc/rsyncd.conf

UID = Users who are backed up by www

GID = Groups that are backed up by www

User Chroot = no set to Yes must be detected with the root user, path specified directory

Max connections = 200 Maximum number of connections

Timeout = 600 Allow client connection time

PID file = location where/var/run/rsyncd.pid pid files are stored

Lock file = location where/var/run/rsyncd.lock lock files are stored

Log file = location where/var/log/rsyncd.log log files are stored

[WWW] Certified module name

path=/data/www/specify directories to participate in synchronization

Ignore errors can ignore some irrelevant IO errors

Read Only = no allows readable writable

List = no does not allow column listings

Hosts allow = 192.168.1.200 Specifies the IP address of the client synchronization

Hosts deny = *

Auth users = rsync designated authenticated user

Secrets file =/etc/rsyncd.password Certified password files

Chomd-r 777/data

Echo rsync:123456 >/etc/rsyncd.password

chmod 600/etc/rsyncd.password

Be sure to modify the/etc/xinetd.d/rsync

Disable=no