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EC2からgithubにssh接続

Last updated at Posted at 2022-03-16

概要

日常の仕事でec2からgithubのリポジトリをcloneしたり、pullしたりする事がありますが、
毎回ユーザー名とパスワードで接続することができますが。
現在、githubの仕様でユーザー名とパスワードで接続場合はアクセストークンで2回認証しないといけないです。
毎回githubにアクセストークン作成のは結構ややこしいですね。
もしsshでgithubに接続すれば、ユーザー名とパスワードの入力は要らなくなります。楽になります。

手順

ec2にec2にアクセスして、ユーザーを切り替え

$ sudo su --login ec2-user

以下のコマンドでssh鍵を作成

ssh-keygen -o
Generating public/private rsa key pair.
Enter file in which to save the key (/home/ec2-user/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/ec2-user/.ssh/id_rsa.
Your public key has been saved in /home/ec2-user/.ssh/id_rsa.pub.
The key fingerprint is:

enterキーを押して、ssh全ての設定はディフォルトにします。

公開鍵とプライベートキーを確認

cd ~/.ssh
ls
uthorized_keys  id_rsa  id_rsa.pub

id_rsa.pubは公開鍵です。
id_rsaはプライベートキーです。

公開鍵をgithubに保存

cat id_rsa.pub

id_rsa.pubの内容をコピーして以下写真のkeyにペーストして保存します。

截屏2022-03-16 22.01.02.png

ec2にgithubにssh接続確認

ssh -T git@github.com
The authenticity of host 'github.com (xxx.xxx.xxx.xxx)' can't be established.
ECDSA key fingerprint is SHA256:p2QAMXNIC1TJYWeIOttrVc98/R1BUFWu3/LiyKgUfQM.
ECDSA key fingerprint is MD5:7b:99:81:1e:4c:91:a5:0d:5a:2e:2e:80:13:3f:24:ca.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'github.com,xxx.xxx.xxx.xxx' (ECDSA) to the list of known hosts.
Hi xxxxxx! You've successfully authenticated, but GitHub does not provide shell access.

You've successfully authenticatedメッセージが出れば、成功!

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