ssh建立免密通道，详细步骤

忙碌且充实

已于 2022-07-27 21:38:04 修改

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分类专栏： Linux学习文章标签： ssh 服务器运维

于 2022-07-27 17:49:52 首次发布

本文链接：https://blog.youkuaiyun.com/cylcylccyyll/article/details/126019433

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这里使用root用户进行登入，A机器ip为192.176.263.150，B机器ip为192.168.253.134。

1、生成密钥对，在A上生成密钥对

密钥对会在用户的家目录下。

ssh-keygen -t rsa

-t 指定密钥的类型，成功后会有一个公私钥对 id_rsa 和 id_rsa.pub，Enter same passphrase again和The key fingerprint is可以直接敲回车不输入。

[root@nginx-kafka01 .ssh]# ssh-keygen -t rsa
    Generating public/private rsa key pair.
    Enter file in which to save the key (/root/.ssh/id_rsa): 
    Enter passphrase (empty for no passphrase): 
    Enter same passphrase again: 
    Your identification has been saved in /root/.ssh/id_rsa.
    Your public key has been saved in /root/.ssh/id_rsa.pub.
    The key fingerprint is:
    SHA256:Wlz+