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官网可见：https://rsync.samba.org/
安装文档可见：https://download.samba.org/pub/rsync/INSTALL#The_basic_setup
依赖包获取执行：
sudo yum -y install epel-release
sudo yum -y install gcc g++ gawk autoconf automake python3-pip
sudo yum -y install acl libacl-devel
sudo yum -y install attr libattr-devel
sudo yum -y install xxhash-devel
sudo yum -y install libzstd-devel
sudo yum -y install lz4-devel
sudo yum -y install openssl-devel
python3 -mpip install --user commonmark
下载rsync的tar包文件：wget https://download.samba.org/pub/rsync/src/rsync-3.2.3.tar.gz
解压后，进行如下编译安装：
./configure --prefix=/usr/local/rsync
make
sudo make install
安装完成后，创建etc目录
sudo mkdir -p /usr/local/rsync/etc/
创建rsync的配置
[global]
use chroot = yes
max connections = 10
timeout = 1800
port = 873
auth users = rsy_backup
secrets file = /usr/local/rsync/etc/rsync.pwd
hosts allow = 172.21.51.0/24
read only = true
list = false
[common_backup]
comment = rsync backup module
path = /tmp/backup/
创建密码文件
sudo vi /usr/local/rsync/etc/rsync.pwd，填写如下内容：
rsy_backup:密码
#格式为用户名:密码，此处只设定一个用户：rsy_backup
设置配置文件和密码文件的权限为600
sudo chmod 600 /usr/local/rsync/etc/rsync.pwd /usr/local/rsync/etc/rsyncd.conf
手动启动rsync服务
/usr/local/rsync/bin/rsync --daemon --config=/usr/local/rsync/etc/rsyncd.conf
至此rsync已启动，手动测试是否可以正常拉取到数据
rsync -v -a --delete --force --ignore-errors --port=873 --password-file=密码文件（里面只有密码且权限应为600） rsync://rsy_backup@服务器地址/common_backup /tmp/rsy_backup
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