Rsync full network backup

===========Operation and maintenance Road
-The environment is as follows

# Server IP: 10.0.0.100
# Client IP: 10.0.0.101
[root@Centos ~]# cat /etc/redhat-release 
CentOS Linux release 7.5.1804 (Core) 
[root@Centos ~]# systemctl status firewalld.service 
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: inactive (dead)
     Docs: man:firewalld(1)
[root@Centos ~]# getenforce 
Disabled

Rsync server deployment

• Check whether the software is installed

[root@Centos ~]# rpm -qa|grep rsync
rsync-3.1.2-4.el7.x86_64

• Write service profile

[root@Centos ~]# vi /etc/rsyncd.conf
#rsync_config
##rsyncd.conf start##

uid = rsync
gid = rsync
use chroot = no
max connections = 200
timeout = 300
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 = 10.0.0.101
hosts deny = 0.0.0.0/32
auth users = rsync_backup
secrets file = /etc/rsync.password
[backup]
path = /backup

• Add process management user

[root@Centos ~]# useradd rsync -s /sbin/nologin -M

• Create the directory required by the program

# Create data backup directory
[root@Centos ~]# mkdir -p /backup
# Authorized data backup directory
[root@Centos ~]# chown -R rsync.rsync /backup/
[root@Centos ~]# ll -d /backup/
drwxr-xr-x 2 rsync rsync 6 Sep 11 18:21 /backup/

• Conduct safety related configuration

# Create document authentication information
[root@Centos ~]# echo "rsync_backup:123456" >/etc/rsync.password
# Authority to modify authentication file
[root@Centos ~]# chmod 600 /etc/rsync.password
[root@Centos ~]# ll -d /etc/rsync.password
-rw------- 1 root root 20 Sep 11 18:26 /etc/rsync.password

• Run program service process

# Start the rsync program Daemons
[root@Centos ~]# rsync --daemon
# Stop the rsync program Daemons
[root@Centos ~]# killall rsync

• Check whether the service is started

[root@Centos ~]# ps -ef|grep rsync
root      16632      1  0 18:55 ?        00:00:00 rsync --daemon
root      16634   1176  0 18:56 pts/0    00:00:00 grep --color=auto rsync
[root@Centos ~]# netstat -lntup
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:873             0.0.0.0:*               LISTEN      16632/rsync

Rsync Client Deployment

• Check whether the software is installed

[root@Centos ~]# rpm -qa|grep rsync
rsync-3.1.2-4.el7.x86_64

• Conduct safety related configuration

# Create document authentication information
[root@Centos ~]# echo "123456" >/etc/rsync.password
# Authority to modify authentication file
[root@Centos ~]# chmod 600 /etc/rsync.password
[root@Centos ~]# ll -d /etc/rsync.password
-rw------- 1 root root 20 Sep 11 18:26 /etc/rsync.password

• Set up service application

# Confirm backup data transfer
[root@Centos ~]# rsync -avzP /etc/hosts rsync_backup@10.0.0.100::backup
# Confirm the backup data transmission and use the keyless transmission
[root@Centos ~]# rsync -avzP /etc/hosts rsync_backup@10.0.0.100::backup --password-file=/etc/rsync.password