Linux配置互信
例如有以下两台机需要做互信
192.168.128.128
192.168.128.129
1、在服务器192.168.128.128生成公钥私钥对
[root@node01 .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:szQ+/rL/qBr3MlgXc7sUHUV9cjIq7WJTvRmbkkPawos root@node01 The key's randomart image is: +---[RSA 2048]----+ | o+| | = +| | . + *.| | + B + | | S. @ + * | | o.+O O = | | .o=+ * + | | .+Eo... | | ..+O=.. | +----[SHA256]-----+
一路默认回车，系统在/root/.ssh下生成id_rsa、id_rsa.pub
2、把id_rsa.pub公钥发送到服务端192.168.128.129机器上
[root@node01 .ssh]# ssh-copy-id -i /root/.ssh/id_rsa.pub 192.168.128.129
需要输入192.168.128.129的密码
3、验证
[root@node01 .ssh]# ssh root@192.168.128.129 Last login: Tue Aug 15 13:02:15 2023 from node01 [root@node02 ~]#
这时192.168.128.128可以免密登录192.168.128.129服务器