Capistrano 3部署失败连接到GitHub – 权限被拒绝（公钥）

我有以下部署脚本与Capistrano v3和capistrano / symfony创业板。我正在使用Ubuntu 14.4部署到AWS EC2实例，我正在连接从AWS下载的.pem文件。我在我的deploy.rb中有以下内容

set :pty, true set :ssh_options, { user: 'ubuntu', keys: ['/Users/myuser/Sites/Myproject.pem'], forward_agent: true, auth_methods: ["publickey"] }

部署时

 bundle exec cap staging deploy --trace

脚本连接好，但在这个失败

 INFO [4fd1b02c] Running /usr/bin/env git ls-remote --heads git@github.com:MyName/Myproject.git as ubuntu@ec2-00-000-000-000.eu-west-1.compute.amazonaws.com DEBUG [4fd1b02c] Command: ( SYMFONY_ENV=prod GIT_ASKPASS=/bin/echo GIT_SSH=/var/www/tmp/myproject/git-ssh.sh /usr/bin/env git ls-remote --heads git@github.com:MyName/Myproject.git ) DEBUG [4fd1b02c] Permission denied (publickey). DEBUG [4fd1b02c] DEBUG [4fd1b02c] fatal: Could not read from remote repository. DEBUG [4fd1b02c] DEBUG [4fd1b02c] DEBUG [4fd1b02c] Please make sure you have the correct access rights DEBUG [4fd1b02c] DEBUG [4fd1b02c] and the repository exists. DEBUG [4fd1b02c] cap aborted! SSHKit::Runner::ExecuteError: Exception while executing as ubuntu@ec2-00-000-000-000.eu-west-1.compute.amazonaws.com: git exit status: 128 git stdout: Permission denied (publickey). fatal: Could not read from remote repository. Please make sure you have the correct access rights and the repository exists. git stderr: Nothing written

我不知道为什么forward_agent不工作？

我一直在试图遵循本指南 – https://developer.github.com/guides/using-ssh-agent-forwarding/#testing-ssh-agent-forwarding

但是当我得到这个

 echo "$SSH_AUTH_SOCK"

它打印一个空行。

另外如果我在服务器上运行它说没有find命令

 sshd_config

仔细检查运行Capistrano的用户是否正在运行ssh-agent ，并且已经ssh-add了相关的密钥。

这里有一些很好的指南：

https://developer.github.com/guides/using-ssh-agent-forwarding/

http://mah.everybody.org/docs/ssh

解决我的问题是两件事。首先，我必须在脚本中转发我的id_rsa，如下所示：

 set :ssh_options, { user: 'ubuntu', keys: ['~/.ssh/id_rsa'], forward_agent: true, auth_methods: ["publickey"] }

我把我的id_rsa.pub键放在服务器上，这样我就可以使用与转发相同的密钥ssh进入服务器。

我必须做的第二件事是在/ tmp使用权限

 chmod 1777 /tmp

我在运行“ $ bundle exec cap test deploy ”时遇到了类似的问题

 Error : git stdout: Nothing written git stderr: Warning: Permanently added the RSA host key for IP address 'xxxxxxxxx' to the list of known hosts. Permission denied (publickey). fatal: Could not read from remote repository.

对于这种情况，我们需要使用ssh密钥来认证github帐户

导航到github – >设置 – > SSH和GPG密钥（部分） – >添加“新SSh密钥”，复制公钥（ $ ssh-keygen #generate new key ））并粘贴密钥输入字段。一旦添加密钥，使用这个命令“ $ ssh -T git@github.com ”检查身份验证。它会显示下面的输出

 Hi <xxxxxxxx>! You've successfully authenticated, but GitHub does not provide shell access.

现在它工作正常！