Rsync server installation and configuration (including problem solving)

introduce

rsyncd service, data transmission between different hosts

Features :

• rsync is a service and a command
• Easy to use, with multiple modes
• When transferring data, it is an incremental transfer.

全量: 无论多少数据 全部 推送走.
增量: 只会把 修改,新建 了的文件传输走

Rsync usage patterns

model	Application Scenario
local mode	not recommended
remote mode	Transfer data (scp can be used instead for temporary use)
rsync daemon mode (daemon)	Transfer data (no password required), used for timing backup and timing synchronization

推送 rsync 路径名 远程的账户@IP:路径名
拉取 rsync 远程的账户@IP:路径名 路径名

server configuration

Check if installed

rpm -qa | grep rsync
check package contents
/etc/rsyncd.conf 配置文件(服务端配置文件,守护进程模式)
/usr/bin/rsync rsync命令
/usr/lib/systemd/system/rsyncd.servicesystemctl控制rsyncd服务的配置文件

configuration class

[root@quanheng ~]# cat /etc/rsyncd.conf
 #create quanheng rsync 14:18 2022-8-27  
 #rsyncd.conf start 
 fake super =yes 
 uid = rsync 
 gid = rsync
 use chroot = no 
 max connections = 2000 
 timeout = 600 
 pid file = /var/run/rsyncd.pid 
 lock file = /var/run/rsync.lock
 log file = /var/log/rsyncd.log 
 ignore errors 
 read only = false
 list = false 
 #hosts allow = 10.0.0.0/24 
 #hosts deny = 0.0.0.0/32 
 auth users = rsync_backup 
 secrets file = /etc/rsync.password ##################################### 
 [data]
 comment = create quanheng rsync 14:18 2022-8-27 
 path = data 
 #启动服务
 systemctl enable rsyncd && systemctl start rsyncd
 检查进程
 ps -ef |grep rsync 
 #检查端口
 ss -lntup |grep rsync

create username

#Add virtual user
useradd -s /sbin/nologin -M rsync

---

# create password file

echo 'rsync_backup:123 ’ >/etc/rsync.password
chmod 600 /etc/rsync.password

Client creates ciphertext

echo 123 >/etc/client.rsync
chmod 600 /etc/client.rsync

verify transmission

rsync -avzP /quanheng/ rsync@IP::data --password-file=/etc/client.rsync

Error solution

This is insufficient permission to add server file permission 755 755不行就777
or the firewall is not turned off the cloud service, the gateway may not be set or selinux is not turned off

This is a permission account problem.
Check whether the rsync.password on the server side is configured correctly.