[PHP]depoyer実行時に「Failed to execute git clone」エラー

エラーの内容

deployerでデプロイしようとすると「Failed to execute git clone」のエラーが出る

[root@localhost deployer_test]# php deployer.phar deploy
&#x2708;︎ Deploying 1.7/master on localhost
&#x2714; Executing task deploy:prepare
&#x2714; Executing task deploy:lock
&#x2714; Executing task deploy:release
&#x2714; Executing task deploy:update_code
&#x2714; Executing task deploy:shared
➤ Executing task deploy:vendors
To speed up composer installation setup "unzip" command with PHP zip extension https://goo.gl/sxzFcD
&#x2714; Executing task deploy:failed

In Client.php line 96:

  The command "cd /home/vagrant/work/releases/1 && /usr/bin/php /usr/local/bin/composer install --verbose --prefer-dist --no-progress --no-interacti
  on --no-dev --optimize-autoloader" failed.

  Exit Code: 1 (General error)

  Host Name: dev

  ================
  Loading composer repositories with package information
  Failed to clone the git@github.com:fuel/docs.git repository, try running in interactive mode so that you can enter your GitHub credentials


    [RuntimeException]
    Failed to execute git clone --mirror 'git@github.com:fuel/docs.git' '/home/vagrant/.cache/composer/vcs/git-github.com-fuel-docs.git/'

問題のコマンドを手で叩いても確かにエラーになる

git clone --mirror 'git@github.com:fuel/docs.git' '/home/vagrant/.cache/composer/vcs/git-github.com-fuel-docs.git/'
Cloning into bare repository '/home/vagrant/.cache/composer/vcs/git-github.com-fuel-docs.git'

...
Permission denied (publickey).
fatal: Could not read from remote repository.

試しに、リポジトリ名を"http://github..."の形に変更するとcloneできる

# git clone http://github.com/fuel/docs.git
Cloning into 'docs'...
remote: Counting objects: 12898, done.
remote: Total 12898 (delta 0), reused 0 (delta 0), pack-reused 12898
Receiving objects: 100% (12898/12898), 4.46 MiB | 309.00 KiB/s, done.
Resolving deltas: 100% (7651/7651), done.

行った事

認証の問題っぽいので、試しに自分のgithubアカウントへsshキーファイルを登録してみた。

手元のmacでsshのキーファイルを作る

$ ssh-keygen

Generating public/private rsa key pair.
Enter file in which to save the key (/Users/akamist/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /Users/akamist/.ssh/id_rsa.
Your public key has been saved in /Users/akamist/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:xxxxx....

キーファイルが.sshにできたことを確認

$ ls -l ~/.ssh
total 24
-rw-------  1 aka  staff  1675  4 13 09:05 id_rsa
-rw-r--r--  1 aka  staff   389  4 13 09:05 id_rsa.pub
-rw-r--r--  1 aka  staff   427  4  8 16:49 known_hosts

id_rsa.pubをgithubに登録 (https://github.com/setting/keys)

deployerを動かしているサーバにid_rsaをコピー

再度、下記のコマンドを手で実行したらOKになった

git clone --mirror 'git@github.com:fuel/docs.git' '/home/vagrant/.cache/composer/vcs/git-github.com-fuel-docs.git/'

emote: Counting objects: 14496, done.
remote: Total 14496 (delta 0), reused 0 (delta 0), pack-reused 14496
Receiving objects: 100% (14496/14496), 4.87 MiB | 510.00 KiB/s, done.
Resolving deltas: 100% (8310/8310), done.

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