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ssh接続のまとめ

Last updated at Posted at 2014-03-23

毎回忘れるので、まとめます
client側

$ cd ~/.ssh
$ ssh-keygen -f client_rsa -t rsa
$ scp ~/.ssh/client_rsa.pub admin@192.168.1.100:~
$ ssh admin@192.168.1.100

server側

[admin@centos ~]$ cd ~
[admin@centos ~]$ mkdir .ssh
[admin@centos ~]$ chmod 700 .ssh
[admin@centos ~]$ mv ~/client_rsa.pub ~/.ssh
[admin@centos ~]$ cat ~/.ssh/client_rsa.pub >> authorized_keys
[admin@centos ~]$ chmod 600 authorized_keys

client側

$ ssh -i ~/.ssh/client_rsa admin@192.168.1.100

server側

[root@centos ~]# vi /etc/ssh/sshd_config
PasswordAuthentication yes
↓
PasswordAuthentication no
[root@centos ~]# service sshd restart

可能のエラー:

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

対策:knownhostでサーバの既存接続を削除したら大丈夫


@termoshtt さんのコメントにより、ssh-copy-idで簡単にできます。

まずはclient側でssh-copy-id設定(mac利用者なら)

$ brew install ssh-copy-id

client側でキー生成とssh-copy-idを利用してserver 側にコピー

$ ssh-keygen -t rsa
$ ssh-copy-id -i ~/.ssh/id_rsa.pub <username>@<host>

それで簡単に終わります

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