gCloud instance: ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain

huangapple
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英文:

gCloud instance: ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain

问题

当我尝试通过SSH连接到Ubuntu 22.04的gcloud实例时，出现以下错误：

Ubuntu版本：

  1. 没有可用的LSB模块。
  2. 发行商ID：Ubuntu
  3. 描述：Ubuntu 22.04 LTS
  4. 版本：22.04
  5. 代号：jammy

错误信息：

  1. ssh: 握手失败：ssh: 无法进行身份验证，尝试的方法为[none publickey]，没有支持的方法可用

只有在使用golang的ssh模块goph时才会出现此错误，但是当我手动使用ssh -i ~/.ssh/id_rsa 34.132.133.12命令时，我可以成功进行SSH连接。

这是我的连接代码片段：

  1. func Connect(privateKey, username string, ip net.Addr) (*goph.Client, error) {
  2. 	// 使用私钥开始新的SSH连接。
  3. 	priKey, err := goph.Key(privateKey, "")
  4. 	if err != nil {
  5. 		return nil, fmt.Errorf("无法获取私钥：%v 错误：%v", privateKey, err)
  6. 	}
  8. 	c := 0
  9. 	for {
  10. 		log.Printf("SSH到：%v", ip)
  12. 		s := spinner.New(spinner.CharSets[9], 100*time.Millisecond) // 创建新的旋转器
  13. 		s.Start()
  14. 		time.Sleep(20 * time.Second)
  15. 		s.Stop()
  17. 		client, err := goph.NewUnknown(username, ip.String(), priKey)
  18. 		if err != nil {
  19. 			c++
  20. 		} else {
  21. 			log.Printf("已连接到：%v", ip.String())
  22. 			return client, nil
  23. 		}
  25. 		if c >= 3 {
  26. 			return nil, fmt.Errorf("无法连接到 %v，错误：%v", ip.String(), err)
  27. 		}
  28. 	}
  29. }

当我的代码运行在以下Ubuntu gCloud版本时，可以成功进行SSH连接：

  1. 没有可用的LSB模块。
  2. 发行商ID：Ubuntu
  3. 描述：Ubuntu 16.04.7 LTS
  4. 版本：16.04
  5. 代号：xenial

我尝试了许多解决方案，例如将私钥权限更改为600（已经设置好了）。我还尝试了其他建议，如ssh-add private key，但仍然遇到相同的问题。

我在SSH连接到两个Ubuntu版本时都运行了详细模式，并且两个操作系统都接受了公钥：

  1. debug1: 可以继续进行的身份验证方法：publickey
  2. debug1: 下一个身份验证方法：publickey
  3. debug2: 我们发送了一个公钥数据包，等待回复
  4. debug1: 服务器接受了密钥：

创建和设置此实例是使用gCloud的golang客户端完成的。似乎需要在实例中进行一些设置，因为我可以在旧的Ubuntu版本上进行SSH连接。

英文:

I'm getting the following error when I try to ssh into a Ubuntu 22.04 gcloud instance:

Ubuntu Version:

  1. No LSB modules are available.
  2. Distributor ID:	Ubuntu
  3. Description:	Ubuntu 22.04 LTS
  4. Release:	22.04
  5. Codename:	jammy

Error:

  1. ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain

This error only happens when I use the golang ssh module goph, but I'm able to ssh when ssh manually with: ssh -i ~/.ssh/id_rsa 34.132.133.12.

Here is my connect snippet:

  1. func Connect(privateKey, username string, ip net.Addr) (*goph.Client, error) {
  2. 	// Start new ssh connection with private key.
  3. 	priKey, err := goph.Key(privateKey, "")
  4. 	if err != nil {
  5. 		return nil, fmt.Errorf("Could not get privateKey: %v error: %v", privateKey, err)
  6. 	}
  8. 	c := 0
  9. 	for {
  10. 		log.Printf("Ssh to: %v", ip)
  12. 		s := spinner.New(spinner.CharSets[9], 100*time.Millisecond) // Build our new spinner
  13. 		s.Start()
  14. 		time.Sleep(20 * time.Second)
  15. 		s.Stop()
  17. 		client, err := goph.NewUnknown(username, ip.String(), priKey)
  18. 		if err != nil {
  19. 			c++
  20. 		} else {
  21. 			log.Printf("Connected to: %v", ip.String())
  22. 			return client, nil
  23. 		}
  25. 		if c >= 3 {
  26. 			return nil, fmt.Errorf("Could not connect to %v, error: %v", ip.String(), err)
  27. 		}
  28. 	}
  29. }

My code is able to ssh when running against this Ubuntu gCloud Version:

  1. No LSB modules are available.
  2. Distributor ID:	Ubuntu
  3. Description:	Ubuntu 16.04.7 LTS
  4. Release:	16.04
  5. Codename:	xenial

I tried many solutions like changing the private key permission to 600 which was already setup. I also did other suggestion to ssh-add private key and still having the same issue.

Also I ran verbose when ssh into both ubuntu version and both OS accepted publickey:

  1. debug1: Authentications that can continue: publickey
  2. debug1: Next authentication method: publickey
  3. debug2: we sent a publickey packet, wait for reply
  4. debug1: Server accepts key:

The creation and setting up of this instance is done by using the gCloud golang client.
It seems that it is a settings that needs to be done in the instance since I'm able to ssh on older Ubuntu versions.

答案1

得分: 1

在https://github.com/melbahja/goph/issues/26上发现了一个错误。在我发布问题之前，当我搜索时，我没有意识到我开启了未解决问题的标志，所以它没有显示这个错误。所以我回去再次检查，并看到了这个问题。

我更新了所有的模块，因为我没有太多的模块，我执行了以下操作：

  1. go get -u ./...
  2. go mod tidy

现在我能够进行ssh连接了。谢谢。

英文:

There was a bug on https://github.com/melbahja/goph/issues/26. When I searched before I posted the question, I did not realize that I left the open issue flag on, so it did not show this bug. So I went back to double-check and saw the issue.

I updated all my modules since I don't have much by doing the following:

  1. go get -u ./...
  2. go mod tidy

Now I'm able to ssh. Thanks

huangapple
  • 本文由 发表于 2022年6月19日 06:09:36
  • 转载请务必保留本文链接：https://go.coder-hub.com/72673084.html
  • gcloud
  • go
  • ssh
  • ubuntu
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