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AWSで作成したインスタンスにSSHで接続できないとき

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環境

  • MacOS 10.12.6

AWSのインスタンス作成後にSSHコマンドで接続しようとした時に

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@         WARNING: UNPROTECTED PRIVATE KEY FILE!          @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Permissions 0644 for 'my-keypair.pem' are too open.
It is required that your private key files are NOT accessible by others.
This private key will be ignored.
Load key "my-keypair.pem": bad permissions
Permission denied (publickey).

となる場合がある。これは、使おうとしているキーペアのパーミッションレベルが甘すぎだよ、もっと絞って、と言っているのである。

$ chmod 600 my-keypair.pem

とすることでsshコマンドが通るようになる。

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