• centos 密钥登陆


    第一种配置方法

    服务端生成密钥和公钥

    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):   #注意这里,如果设置了密码,那么登陆的时候也要输入这个密码
    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:/gGrlDJN5euMS5aai5feBkEI/0WjEnzPzx1xGtdkKG4 root@localhost.localdomain
    The key's randomart image is:
    +---[RSA 2048]----+
    |.o..  o      +o  |
    | .o.oo .  + +..  |
    |  oo.o. .. B     |
    |   o..oo  E      |
    |    ...oSo .     |
    |    .o +o+.      |
    |    ooB + .      |
    |   .oX.= . .     |
    |  .o=o=.o .      |
    +----[SHA256]-----+

    创建authorized_keys存储公钥

    touch /root/.ssh/authorized_keys

    把公钥写入authorized_key

    cat id_rsa.pub > authorized_keys

    修改权限

    chmod 700 /root/.ssh

    chmod 600 /root/.ssh/authorized_keys

    修改/etc/ssh/sshd_config

    RSAAuthentication yes # 开启密钥登入的认证方式
    PubkeyAuthentication yes # 开启密钥登入的认证方式
    PasswordAuthentication no #禁用密码登陆

    重启sshd,然后建议用xshell登陆测试

    Linux系统密钥登陆Linux

    ssh root@192.168.199.2

    第二种配置方式

    Linux系统之间的密钥配置(此配置方式也要在ssh文件里面开启密钥认证方式)

    ssh-keygen #生成密钥
    ssh-copy-id -i ~/.ssh/id_rsa.pub root@192.168.28.128 #复制公钥到要远程的主机,本机也要执行
    ssh-copy-id -i ~/.ssh/id_rsa.pub root@192.168.28.131
    ssh-copy-id -i ~/.ssh/id_rsa.pub root@192.168.28.132

     注意权限问题:

    ./ 700

    .ssh 700

    authorized_keys 600

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  • 原文地址:https://www.cnblogs.com/yunweiweb/p/12903069.html
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