ssh 密匙创建以及ssh 远程登录配置

ssh密匙生成：

[root@localhost ~]# ssh-keygen -t rsa       #生成密钥对，-t代表类型，有RSA和DSA两种Generating public/private rsa key pair. Enter file in which to save the key (/root/.ssh/id_rsa):   #密钥文件默认存放位置，按Enter即可Created directory '/root/.ssh'. Enter passphrase (empty for no passphrase):     #输入密钥锁码，或直接按 Enter 留空Enter same passphrase again:     Your identification has been saved in /root/.ssh/id_rsa.    #生成的私钥Your public key has been saved in /root/.ssh/id_rsa.pub.    #生成的公钥The key fingerprint is: SHA256:K1qy928tkk1FUuzQtsdfsdf6dfdfPvHw9lQ+KNuZ4 root@localhost.localdomain The key's randomart image is: +---[RSA 2048]----+ |           +.    | |          o * .  | |        . .O +   | |       . *. *    | |        S =3+     | |    .    =...    | |    .oo =+ov+     | |     ==o+B*3o.    | |    oo.3=EXO.     | +----[SHA256]-----+

生成后的密匙文件位置:

cd ~cd .sh ls

设置ssh公钥远程登录:(将公钥文件上传到远程服务器,同时将key复制到authorized_keys)

[root@localhost .ssh]# rz    [root@localhost .ssh]# cat id_rsa_2048.pub >> authorized_keys    [root@localhost .ssh]# chmod 600 authorized_keys