0. はじめに

SSH認証キーをGitLabに登録して、リモートリポジトリからクローンする方法についてです！

0-1. 全体の流れ

1.ssh
2.clone
Reference

0-2. 本記事の対象者

SSH認証キーをGitLabに登録したい
SSH接続でリモートリポジトリをクローンしたい

0-3. 前提条件

GitLabアカウント作成済み
GitLabでプロジェクト作成済み
隠しファイル表示設定済み

0-4.要件

GitLab登録
SSH秘密鍵 / SSH公開鍵 / OpenSSHキー
git clone

1.ssh

1-1.キーペア作成(秘密鍵と公開鍵)

local

$ cd ~/.ssh

$ ssh-keygen -t rsa -f gitlab_rsa -C hoge@gmail.com
Generating public/private rsa key pair.
Enter passphrase (empty for no passphrase): #お好みのパスワードを入力
Enter same passphrase again: #再度お好みのパスワードを入力
Your identification has been saved in gitlab_rsa
Your public key has been saved in gitlab_rsa.pub
The key fingerprint is:
SHA256:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx hoge@gmail.com

$ ls ~/.ssh
gitlab_rsa. gitlab_rsa.pub

1-2.GitLabに公開鍵を登録

local

$ pbcopy < ~/.ssh/gitlab_rsa.pub

GitLabのSSH Keysにアクセス
SSH Fingerprintsにpbcopyでコピーしたgitlab_rsaをペースト
Titleは任意(gitlab_rsaなど)

1-3.ssh-agentに秘密鍵を登録

local

$ ssh-add ~/.ssh/gitlab_rsa
Identity added: /Users/xxxxxxxxxxxxxxx/.ssh/gitlab_rsa (xxxxxxxxxxxxxxxxxxx@gmail.com)

$ ssh-add -l
xxxx SHA256:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx@gmail.com (RSA)

1-4.configに反映

local

$ vim ~/.ssh/config

# GitHub
Host github.com
  IdentityFile ~/.ssh/github_rsa
  User git

# GitLab
Host gitlab.com
  HostName gitlab.com
  User git
  AddKeysToAgent yes
  UseKeychain yes
  TCPKeepAlive yes
  identitiesonly yes
  IdentityFile ~/.ssh/gitlab_rsa

1-5.SSH接続

local

$ ssh gitlab.com
The authenticity of host 'gitlab.com (xxxx:xxxx:xx:x:xxxx:xxxx:xxxx:xxxx)' can't be established.
ED25519 key fingerprint is SHA256:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
This key is not known by any other names
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes #yesを入力
Warning: Permanently added 'gitlab.com' (ED25519) to the list of known hosts.
Enter passphrase for key '/Users/kishimotokazuma/.ssh/gitlab_rsa': #パスワード入力
PTY allocation request failed on channel 0
Welcome to GitLab, @kazumakishimoto!
Connection to gitlab.com closed.

2.clone

2-1.git clone

local

$ cd /Users/xxxxxxxxxxxxxxx/Documents
$ git clone git@gitlab.com:kazumakishimoto/test.git
Cloning into 'test'...
remote: Enumerating objects: 3, done.
remote: Counting objects: 100% (3/3), done.
remote: Compressing objects: 100% (2/2), done.
remote: Total 3 (delta 0), reused 0 (delta 0), pack-reused 0
Receiving objects: 100% (3/3), done.

Reference