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~/.ssh/config

# User_A
Host github.com-User_A
HostName github.com
User git
PreferredAuthentications publickey
IdentityFile ~/.ssh/id_rsa
IdentitiesOnly yes

# User_B
Host github.com-User_B
HostName github.com
User git
PreferredAuthentications publickey
IdentityFile ~/.ssh/id_rsa_user_b
IdentitiesOnly yes

# http://serverfault.com/questions/400633/capistrano-deploying-to-different-servers-with-different-authentication-methods
Host example.com
IdentityFile ~/.ssh_keys/example_env.pem
ForwardAgent yes

在本地机器上:

  $ ssh -T git@github.com
  Hi User_B! You've successfully authenticated, but GitHub does not provide shell access.

在远程机器上

    ~$ ssh remote_user@example.com

    [remote_user@example ~]$ ssh -T git@github.com
    Hi User_A! You've successfully authenticated, but GitHub does not provide shell access.

笔记:

  • ssh-add -l 显示所有提到的键
  • deploy.rb 包含:

     set :repository,  "git@User_B:<REPO_NAME>"
    
     ssh_options[:forward_agent] = true
    

我正在尝试使用 Capistrano 将我的应用程序部署到 Amazon EC2 实例,我已经使用 ssh-add 将 .pem 文件添加到我的本地计算机中,并且可以看到它在ssh-add -l的输出中登记。但是我是部署时遇到以下错误:

** [example.com :: err] ERROR: Repository not found.
** fatal: The remote end hung up unexpectedly

以下是我的 cap deploy 命令的完整输出:

$ cap bat deploy

  triggering load callbacks
* executing `bat'
  triggering start callbacks for `deploy'
* executing `multistage:ensure'
* executing `deploy'
* executing `deploy:update'
   ** transaction: start
* executing `deploy:update_code'
  updating the cached checkout on all servers
  executing locally: "git ls-remote git@User_B:<REPO_NAME> <BRANCH_NAME>"
  command finished in 6296ms
* executing "if [ -d /srv/<APP_NAME>/shared/cached-copy ]; then cd /srv/<APP_NAME>/shared/cached-copy && git fetch -q origin && git fetch --tags -q origin && git reset -q --hard df84fadff305e1729991caddde47f6802e424d57 && git clean -q -d -x -f; else git clone -q git@User_B:<REPO_NAME> /srv/<APP_NAME>/shared/cached-copy && cd /srv/<APP_NAME>/shared/cached-copy && git checkout -q -b deploy df84fadff305e1729991caddde47f6802e424d57; fi"
  servers: ["example.com"]
  [example.com] executing command
   ** [example.com :: err] ERROR: Repository not found.
   ** fatal: The remote end hung up unexpectedly
  command finished in 3811ms
  *** [deploy:update_code] rolling back
* executing "rm -rf /srv/<APP_NAME>/releases/20130723222237; true"
  servers: ["example.com"]
  [example.com] executing command
  command finished in 477ms
  failed: "sh -c 'if [ -d /srv/<APP_NAME>/shared/cached-copy ]; then cd /srv/<APP_NAME>/shared/cached-copy && git fetch -q origin && git fetch --tags -q origin && git reset -q --hard df84fadff305e1729991caddde47f6802e424d57 && git clean -q -d -x -f; else git clone -q git@User_B:<REPO_NAME> /srv/<APP_NAME>/shared/cached-copy && cd /srv/<APP_NAME>/shared/cached-copy && git checkout -q -b deploy df84fadff305e1729991caddde47f6802e424d57; fi'" on example.com

所以我猜这个错误是由于在本地机器上检测到多个 SSH 密钥之间产生的冲突引起的用来。

如果我的假设是正确的,有人可以帮我解决这个问题吗?代理转发时是否可以使用特定的用户配置?如果没有,那么解决这个问题的方法是什么?

谢谢。

4

1 回答 1

0

好的,似乎 ~/.ssh/config 中列出的键的顺序很重要。

最初是

    # User_A
    Host github.com-User_A
    HostName github.com
    User git
    PreferredAuthentications publickey
    IdentityFile ~/.ssh/id_rsa
    IdentitiesOnly yes

    # User_B
    Host github.com-User_B
    HostName github.com
    User git
    PreferredAuthentications publickey
    IdentityFile ~/.ssh/id_rsa_user_b
    IdentitiesOnly yes

    # http://serverfault.com/questions/400633/capistrano-deploying-to-different-servers-with-different-authentication-methods
    Host example.com
    IdentityFile ~/.ssh_keys/example_env.pem
    ForwardAgent yes

后来我这样做了:

    # User_B
    Host github.com-User_B
    HostName github.com
    User git
    PreferredAuthentications publickey
    IdentityFile ~/.ssh/id_rsa_user_b
    IdentitiesOnly yes

    # User_A
    Host github.com-User_A
    HostName github.com
    User git
    PreferredAuthentications publickey
    IdentityFile ~/.ssh/id_rsa
    IdentitiesOnly yes


    # http://serverfault.com/questions/400633/capistrano-deploying-to-different-servers-with-different-authentication-methods
    Host example.com
    IdentityFile ~/.ssh_keys/example_env.pem
    ForwardAgent yes

但是在这样做之后我没有重新启动机器,因此更改没有生效。

今天早上,在发布上述问题后启动机器后,我发现它正在工作:

在本地机器上:

  $ ssh -T git@github.com
  Hi User_B! You've successfully authenticated, but GitHub does not provide shell access.

在远程机器上

  $ ssh -T git@github.com
  Hi User_B! You've successfully authenticated, but GitHub does not provide shell access.

希望这可以帮助其他人,以防他遇到类似的问题。

谢谢。

于 2013-07-24T06:33:01.870 回答