CentOS 8.2 创建ssh密钥

查当前系统密钥

在生成新的SSH密钥对之前，最好检查 CentOS 客户端计算机上的现有SSH密钥。

ls -l ~/.ssh/id_*.pub

如果命令的输出返回类似cannot access /root/.ssh/id_*.pub: No such file or directory，则意味着您的客户端计算机上没有SSH密钥，您可以继续执行下一步并生成SSH密钥对。

生成密钥

生成一个新的4096位SSH密钥对，并填写注释

ssh-keygen -t rsa -b 4096 -C "dai_linux_centos"

提示 生成公钥和密钥对中
输入文件地址来决定在哪里保存文件（可以直接Enter跳过，默认保存在/www/.ssh/id_rsa

Generating public/private rsa key pair.
Enter file in which to save the key (/www/.ssh/id_rsa):

提示输入密码(如果是自动化的就不要输入密码，如果是手动拉取推送就用)

Enter passphrase (empty for no passphrase):

生成过程

[www@iZj6c5r46uy6phsb91zarsZ root]$ ls -l ~/.ssh/id_*.pub
ls: cannot access '/home/www/.ssh/id_*.pub': No such file or directory
[www@iZj6c5r46uy6phsb91zarsZ root]$ ssh-keygen -t rsa -b 4096 -C "dai_linux_centos"
Generating public/private rsa key pair.
Enter file in which to save the key (/home/www/.ssh/id_rsa):
/home/www/.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/www/.ssh/id_rsa.
Your public key has been saved in /home/www/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:kHOWSUJrK3cu3BXspDRbWMxacDhLSjzy24OIaNWf274 dai_linux_centos
The key's randomart image is:
+---[RSA 4096]----+
|     oo o=o      |
|    . +=+B+      |
|    .+*+O==      |
|   . ooBoB .     |
| .....++S o      |
|... .+o*o.       |
|.     o =.       |
|       o .       |
|        .E.      |
+----[SHA256]-----+
[www@iZj6c5r46uy6phsb91zarsZ root]$

使用密钥对

打开存储密钥的文件夹(当前是www用户)

cd /home/www/.ssh

部署公钥到仓库，直接复制即可

vim id_rsa.pub