Ruby-on-rails Capistrano SSH::AuthenticationFailed，不提示输入密码

Capistrano SSH::AuthenticationFailed, not prompting for password

提问by Sparkmasterflex

I've been using capistrano successfully for a while now and all of a sudden in every project I've lost the ability to deploy.

我已经成功使用 capistrano 有一段时间了，突然间在每个项目中我都失去了部署的能力。

Environment:

环境：

• os X (Mavericks)
• ruby 1.9.3p194
• rvm (locally, not on server)
• rails 3.2 and up
• RubyGems 1.8.25

• os X（小牛队）
• 红宝石 1.9.3p194
• rvm（本地，不在服务器上）
• 导轨 3.2 及更高版本
• RubyGems 1.8.25

I'm not using rsa_keys or anything I want capistrano to prompt for user and password. Suddenly it has decided not to ask for a password, but does ask for user. Then it rolls back and gives me the following error.

我没有使用 rsa_keys 或任何我想让 capistrano 提示输入用户和密码的东西。突然它决定不要求输入密码，而是要求输入用户。然后它回滚并给我以下错误。

[deploy:update_code] exception while rolling back: Capistrano::ConnectionError, connection failed for: sub.example.com (Net::SSH::AuthenticationFailed: Authentication failed for user [email protected])
connection failed for: sub.example.com (Net::SSH::AuthenticationFailed: Authentication failed for user [email protected])

This has occurred on my personal laptop and my iMac at work. It occurs when deploying to two different servers (both linux)

这发生在我的个人笔记本电脑和我工作的 iMac 上。它在部署到两个不同的服务器（都是 linux）时发生

I'm completely at a loss here. Any ideas?

我在这里完全不知所措。有任何想法吗？

回答by Sparkmasterflex

Figured it out! Apparently this issue was with net-sshgem. I had version 2.8.0 installed recently with some updates to my development environment and was the cause.

弄清楚了！显然这个问题与net-sshgem 有关。我最近安装了 2.8.0 版，对我的开发环境进行了一些更新，这就是原因。

I'm not sure why it was failing, but gem uninstall net-ssh -v 2.8.0<fixed it for me.

我不确定为什么它失败了，但gem uninstall net-ssh -v 2.8.0<为我修复了它。

If anyone actually knows why this was an issue or how I can correct this issue with the newer version of net-sshI'd be interested to hear it.

如果有人真的知道为什么这是一个问题，或者我如何用较新版本的net-ssh我来纠正这个问题，我会很想听听它。

回答by creativetechnologist

The answer may break your rails app due to gem dependancies.

由于 gem 依赖关系，答案可能会破坏您的 rails 应用程序。

The issue is with net-ssh as was correctly answered by Sparkmasterflex, however whilst this will get capistrano working ok it may break your rails app:

问题出在 net-ssh 上，正如Sparkmasterflex正确回答的那样，但是虽然这将使 capistrano 正常工作，但它可能会破坏您的 rails 应用程序：

These steps fixed both capistrano and rails for me ...

这些步骤为我修复了 capistrano 和 rails ...

1. In your Gemfile add gem 'net-ssh', '2.7.0'
2. Run bundle update net-ssh
3. Run bundle(just to be sure everything is working ok'
4. Run gem uninstall net-ssh -v 2.8.0

1. 在你的 Gemfile 添加 gem 'net-ssh', '2.7.0'
2. 跑 bundle update net-ssh
3. 运行bundle（只是为了确保一切正常'
4. 跑 gem uninstall net-ssh -v 2.8.0

If you are a rails user you should now be able to run both the rails server and capistrano.

如果您是 rails 用户，您现在应该能够同时运行 rails 服务器和 capistrano。

回答by Scott Weldon

I have a workaround that doesn't require downgrading net-ssh, per a comment at the linkthat Zach Liptonposted. Place this code in config/deploy.rb:

net-ssh根据Zach Lipton发布的链接中的评论，我有一个不需要降级的解决方法。将此代码放在：config/deploy.rb

set :ssh_options, {
  config: false
  #Other options...
}

After I did that, I got another error, Error reading response length from authentication socket.Found the solution to that here. Execute these commands at your Bash prompt:

在我这样做之后，我遇到了另一个错误，Error reading response length from authentication socket.在这里找到了解决方案。在 Bash 提示符下执行这些命令：

$ eval $(ssh-agent)
$ ssh-add

回答by CezarBastos

Upgrading your net-ssh version to 2.8.1 will solve the problem. They released a version bump in 19th february 2014 that fix this and other problems.

将您的 net-ssh 版本升级到 2.8.1 将解决该问题。他们在 2014 年 2 月 19 日发布了一个版本提升，解决了这个问题和其他问题。

1. Uninstall your current net-ssh gem (gem install net-ssh -v 'version')

2. Just paste this on your Gemfile:

   gem 'net-ssh', '~> 2.8.1', :git => "https://github.com/net-ssh/net-ssh"

3. Run bundle install

1. 卸载当前的 net-ssh gem (gem install net-ssh -v 'version')

2. 只需将其粘贴到您的 Gemfile 上：

   gem 'net-ssh', '~> 2.8.1', :git => " https://github.com/net-ssh/net-ssh"

3. 运行捆绑安装

回答by Anbazhagan p

I had the same problem while deploying using capistrano Net::SSH::AuthenticationFailed: Authentication failed for user deployer@IP

使用 capistrano Net::SSH::AuthenticationFailed: Authentication failed for user deployer@IP 部署时我遇到了同样的问题

ssh-copy-id deployer@ip

ssh-copy-id deployer@ip

This will add your keys to server and you can login without password.

这会将您的密钥添加到服务器，您无需密码即可登录。

回答by vellotis

set :ssh_options, {
 verbose: :debug
}

... helps a lot!

……很有帮助！

I had an issue that I generated my public and private keys with puttygenand exported private key as OpenSSH with name <somename>.id_rsa. An then saved public key with name <somename>.id_rsa.pub.

我遇到了一个问题，我puttygen使用 name生成了我的公钥和私钥，并将私钥导出为 OpenSSH <somename>.id_rsa。然后保存的名为 name 的公钥<somename>.id_rsa.pub。

( ! ) The public key puttygen saves is in RFC 4716 format not PEM. Use publicsuffix instead of pubfor public key file-

( ! ) puttygen 保存的公钥是 RFC 4716 格式而不是 PEM。使用public后缀代替pub公钥文件-

回答by Boomerange

First try to connect to your server with certificate (file.pem) with this command:

首先尝试使用以下命令使用证书 (file.pem) 连接到您的服务器：

ssh -i "file.pem" user@yourServerIp

Then try to run cap production deploy. It solved error for me. I think it is because time limit for certificate expired.

然后尝试运行 cap production deploy。它为我解决了错误。我认为这是因为证书的时间限制已过期。

回答by Muntasim

This snippet works for me:

这个片段对我有用：

group :development do
  #.....
  gem 'capistrano', "~> 2.15"
  gem "net-ssh", "~> 2.7.0"
  #.....
end

回答by Jaswinder

If all the above solutions doesn't work,please restart your system as you might be facing the issue due to net-ssh host connections.when you restart and enter the deployment command ,it will ask to add the identity to known hosts.

如果以上所有解决方案都不起作用，请重新启动您的系统，因为您可能面临 net-ssh 主机连接的问题。当您重新启动并输入部署命令时，它会要求将身份添加到已知主机。