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gitで秘密鍵を使い分ける

Posted at

gitで cloneやpushをする際に何故か違う鍵が使われて詰まったので

configで設定するやり方

.ssh/config
Host <呼ぶときの名前>
  HostName github.com
  User git
  Port 22
  IdentityFile ~/.ssh/<使う鍵(秘密鍵の方)>
  TCPKeepAlive yes
  IdentitiesOnly yes #これがないと他の鍵(デフォルトのid_rsaなど)も読み込まれてしまう

を作成し

git clone git@<configで設定した「呼ぶときの名前」>:<githubのユーザー名>/<githubのレポジトリ名>.git

を叩く
参考ソース:
https://zenn.dev/hironorioka28/articles/35a287ffbcf533

設定ファイルなしのコマンドのみで実行する場合

GIT_SSH_COMMAND="ssh -i ~/.ssh/<鍵名> -o IdentitiesOnly=yes" git clone git@github.com:<ユーザー名>/<レポジトリ名>.git

-o でオプションを指定出来る
ここでconfigと同様にデフォルトの鍵(id_rsa)が呼ばれないように指定する
参考ソース:
https://stackoverflow.com/questions/4565700/how-to-specify-the-private-ssh-key-to-use-when-executing-shell-command-on-git#answer-29754018

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