英文:
Golang SSH client error "unable to authenticate, attempted methods [none publickey], no supported methods remain"
问题
由于某种原因，Golang SSH客户端无法连接到我的EC2实例。它抛出以下错误：
ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain
这是我的代码：
package main
import (
"fmt";
"github.com/helloyi/go-sshclient"
)
func main() {
client, err := sshclient.DialWithKey("ip:port", "ubuntu", "my_key.pem")
if err != nil {
fmt.Println(err)
return
}
out, err := client.Cmd("help").Output()
if err != nil {
fmt.Println(err)
return
}
fmt.Println(string(out))
}
有趣的是，当我在另一台计算机上运行此代码时，连接成功且没有任何错误。所以我认为这一定是计算机的问题，而不是我的代码问题。我还尝试使用Python的Paramiko客户端连接到实例，结果完美无误。当然，我还尝试使用CMD中的ssh命令和MobaXTerm客户端进行连接 - 都成功了。我还尝试使用其他Golang SSH客户端golang.org/x/crypto/ssh，但它也无法工作（同样的错误）。
谢谢你的帮助。
英文:
For some reason Golang SSH client can't connect to my EC2 instance. It throws the following error:
ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain
This is my code:
package main
import (
"fmt"
"github.com/helloyi/go-sshclient"
)
func main() {
client, err := sshclient.DialWithKey("ip:port", "ubuntu", "my_key.pem")
if err != nil {
fmt.Println(err)
return
}
out, err := client.Cmd("help").Output()
if err != nil {
fmt.Println(err)
return
}
fmt.Println(string(out))
}
What's interesting is that when I ran this code on my other computer the connection was made without any errors. So I think it must be a problem with the PC and not my code. I also tried connecting to the instance in Python using Paramiko client and it worked flawlessly. Of course I tried connecting using ssh command in CMD and MobaXTerm client - both worked. I tried using other Golang SSH client golang.org/x/crypto/ssh and it didn't work (same error).
Thank you for your help.
答案1
得分: 3
显然，这是一个与go.mod文件有关的问题。golang.org/x/crypto和golang.org/x/sys都已过时，一旦我更新它们，它就开始工作了。感谢@kkleejoe的帮助。
英文:
Apparently, it was an issue with go.mod file. Both golang.org/x/crypto and golang.org/x/sys were outdated, once I updated them it started working. Thanks @kkleejoe for your help.
答案2
得分: 1
假设您可以无需密码执行 ssh user@host，公钥可能是 ~/.ssh/id_rsa 或 ~/.ssh/id_ecda。
import "golang.org/x/crypto/ssh"
import "io/ioutil"
import "strconv"
func DialWithPublickey(addr string, port int, user, publickeyfile string) (*ssh.Client, error) {
key, err := ioutil.ReadFile(publickeyfile)
if err != nil {
return nil, err
}
signer, err := ssh.ParsePrivateKey(key)
if err != nil {
return nil, err
}
client, err := ssh.Dial("tcp", addr+":"+strconv.Itoa(port), &ssh.ClientConfig{
User: user,
Auth: []ssh.AuthMethod{ssh.PublicKeys(signer)},
HostKeyCallback: ssh.HostKeyCallback(func(string, net.Addr, ssh.PublicKey) error { return nil }),
})
if client == nil || err != nil {
return nil, err
}
client.SendRequest(user+"@"+addr, true, nil) // keep alive
return client, nil
}
尝试 `DialWithPublickey(host, port, user, "~/.ssh/id_rsa")`
英文:
assume you can ssh user@host without password, public key may be ~/.ssh/id_rsa or ~/.ssh/id_ecda
import "golang.org/x/crypto/ssh"
import "io/ioutil"
import "strconv"
func DialWithPublickey(addr string, port int, user, publickeyfile string) (*ssh.Client, error) {
key, err := ioutil.ReadFile(publickeyfile)
if err != nil {
return nil, err
}
signer, err := ssh.ParsePrivateKey(key)
if err != nil {
return nil, err
}
client, err := ssh.Dial("tcp", addr+":"+strconv.Itoa(port), &ssh.ClientConfig{
User: user,
Auth: []ssh.AuthMethod{ssh.PublicKeys(signer)},
HostKeyCallback: ssh.HostKeyCallback(func(string, net.Addr, ssh.PublicKey) error { return nil }),
})
if client == nil || err != nil {
return nil, err
}
client.SendRequest(user+"@"+addr, true, nil) // keep alive
return client, nil
}
try DialWithPublickey(host, port, user, "~/.ssh/id_rsa")
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