Details of the Linux remote data synchronization command under Linux

introduce

The rsync command is a remote data synchronization tool that can quickly synchronize files between multiple hosts via LAN/WAN. rsync USES the so-called "rsync algorithm" to synchronize files between local and remote hosts, which is quite fast because it only transmits different parts of two files, rather than the whole at a time. rsync is a very powerful tool, and its commands also have a lot of feature options. Let's analyze the options 11 below.

Common scenario

Password-less synchronization

Server: vim /etc/ rsyncd. conf

#This is the rsync daemon configuration 

#global settings 
pid file = /var/run/rsyncd.pid
port = 873
lock file = /var/run/rsyncd.lock
log file = /var/log/rsync.log
gid = root
uid = root

#module settings 
[share_data]
path = /web/rsync/share_data
use chroot = no
max connections = 15
read only = yes
write only = no
list = no
ignore errors = yes
timeout = 120

/usr/bin/rsync --daemon
mkdir -p /web/rsync/share_data

The client

rsync -avz --progress root@192.168.1.98::share_data /home/hadoop/share_data

Restricted flow synchronization

rsync -avz --bwlimit=50 --progress root@192.168.1.98::share_data /home/hadoop/share_data

Password sync

The service side

vim /etc/rsyncd.conf

#This is the rsync daemon configuration 

#global settings 
pid file = /var/run/rsyncd.pid
port = 873
lock file = /var/run/rsyncd.lock
log file = /var/log/rsync.log
gid = root
uid = root

#module settings 
[auth_data]
path = /web/rsync/auth_data
use chroot = no
max connections = 15
read only = yes
write only = no
list = no
ignore errors = yes
timeout = 120
auth users = hadoop
secrets file = /etc/rsyncd.passwd

echo "hadoop:password123" > /etc/rsyncd.passwd 
chmod 600 /etc/rsyncd.passwd
mkdir -p /web/rsync/auth_data

The client

echo "password123" > /home/hadoop/rsyncd.passwd 
chmod 600 /home/hadoop/rsyncd.passwd 
rsync -avz --progress --password-file=/home/hadoop/rsyncd.passwd hadoop@192.168.1.98::auth_data /home/hadoop/auth_data

Or is it

export RSYNC_PASSWORD="password123"
rsync -avz --progress hadoop@192.168.1.98::auth_data /home/hadoop/auth_data

Write synchronization

The service side

vim /etc/rsyncd.conf

#global settings 
pid file = /var/run/rsyncd.pid
port = 873
lock file = /var/run/rsyncd.lock
log file = /var/log/rsync.log
gid = root
uid = root

#module settings 
[write_data]
path = /web/rsync/write_data
use chroot = no
max connections = 15
read only = no
list = no
ignore errors = yes
timeout = 120
auth users = hadoop
secrets file = /etc/rsyncd.passwd

mkdir -p /web/rsync/write_data

The client

/usr/bin/rsync --daemon
mkdir -p /web/rsync/share_data

0

Define IP or segment

/usr/bin/rsync --daemon
mkdir -p /web/rsync/share_data

1

More command references

Client https: / / download. samba. org pub/rsync/rsync html

Server-side https: / / download. samba. org pub/rsync/rsyncd conf. html

conclusion