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パスワードなしでSSHログインする簡単な手順

Last updated at Posted at 2015-01-20

###ログイン元サーバで秘密鍵と公開鍵の作成

# cd ~
# mkdir .ssh
# chmod 700 .ssh
# ssh-keygen -t dsa

これにより、id_dsa(秘密鍵)とid_dsa.pub(公開鍵)が作成される

###公開鍵をログイン先サーバに転送

# scp id_dsa.pub 192.168.137.127:/home/user/
# ssh 192.168.137.127

###公開鍵をログイン先サーバに登録

cd ~
mkdir .ssh
chmod 700 .ssh
cd .ssh
cat ~/id_dsa.pub >> authorized_keys
chmod 600 authorized_keys

###公開鍵認証を許可する

sed -i -e "s/#PubkeyAuthentication/PubkeyAuthentication/g" /etc/ssh/sshd_config
PubkeyAuthentication yes

に変更する

###sshデーモンの再起動

service sshd restart
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