rsync + ssh authorized 文件同步

A : 配置 ssh 登录免认证

1. 在客户端 linux 执行 ssh-keygen 回车, 为当前用户生成私钥 id_rsa 与公钥 id_rsa.pub 

[ping.bao@172 ~]$ ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/home/ping.bao/.ssh/id_rsa):
/home/ping.bao/.ssh/id_rsa already exists.
Overwrite (y/n)? y
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/ping.bao/.ssh/id_rsa.
Your public key has been saved in /home/ping.bao/.ssh/id_rsa.pub.
The key fingerprint is:
df:2e:ee:ed:81:51:b0:ae:f3:4f:bb:7e:19:1d:8d:f9 [email protected]

2. 上传 scp ~/.ssh/id_rsa.pub [email protected]:/home/ping.bao/.ssh/authorized_keys 

3. 本地执行 ssh ping.bao@172.16.0.1 -p22 即可实现对 ping.bao 以当前用户免密码登录, 然后在远程服务器 chmod 600 ~/.ssh/authorized_keys 

说明 ： 只需服务端 172.16.0.1 删除 authorized_keys文件或本地删除id_rsa 即配对失效 ， 必须保证文件 authorized_keys 权限为 600

B : rsync 应用

1. 如下命令即可实现本地计算机 /opt/data/ 与远程的 /opt/data/ 进行同步。

rsync -a --delete /opt/data/ [email protected]:/opt/data/