Question

我正在尝试在cisco开关上通过ssh运行命令并将结果打印到控制台。 我已成功使用debian linux服务器完成此操作。然而，在cisco开关上，命令的执行会阻止主函数，它永远不会完成。

package main

import (
    "bytes"
    "fmt"
    "golang.org/x/crypto/ssh"
)

func main(){
    // Client configuration
    config := &ssh.ClientConfig{
        User: "admin",
        Auth: []ssh.AuthMethod{
            ssh.Password("mypassword"),
        },
    }
    //Connection
    fmt.Println("Connecting...")
    client, err := ssh.Dial("tcp", "10.0.0.1:22", config)
    if err != nil {
        panic("Failed to dial: " + err.Error())
    }
    fmt.Println("Connected...")

    //Session
    fmt.Println("Creating Session...")
    session, err := client.NewSession()
    if err != nil {
        panic("Failed to create session: " + err.Error())
    }
    fmt.Println("Session created...")
    defer session.Close()

    // Execute a single command 
    var b bytes.Buffer
    session.Stdout = &b
    fmt.Println("Running command...")
    if err := session.Run("show environment all"); err != nil {
        panic("Failed to run: " + err.Error())
    }

    fmt.Println("Command run: Output:", b.String())
}

返回（在session.Run（）处挂起：

Connecting...
Connected...
Creating Session...
Session created...
Running command...

此刻我正在黑暗中钓鱼。任何帮助表示赞赏！谢谢！

修改我知道我的程序完全挂在这里：

if err := <-s.errors; err != nil && copyError == nil {
        copyError = err
}

在Go的x / crypto / ssh包（session.go）的Wait（）函数中。但我不确定为什么。好像在这一点上我们正在等待会话错误通道中的错误。但在这一点上，我的技能让我感到不安......

编辑2： 当我运行我的代码时，我的CISCO交换机会在日志中告诉我以下内容。

SWU-ACS-02#26-May-2015 19:07:50 %AAA-I-CONNECT: User CLI session for user admin over ssh , source 10.0.0.2 destination  10.0.0.1 ACCEPTED, aggregated (1)
26-May-2015 19:08:09 %AAA-I-CONNECT: User CLI session for user admin over ssh , source 10.0.0.2 destination  10.0.0.1 ACCEPTED

编辑3： 这是具有最详细选项（-vvv）

的ssh的输出

admin@10.0.0.1's password:
debug3: packet_send2: adding 48 (len 61 padlen 19 extra_pad 64)
debug2: we sent a password packet, wait for reply
debug1: Authentication succeeded (password).
Authenticated to 10.0.0.1 ([10.0.0.1]:22).
debug1: channel 0: new [client-session]
debug3: ssh_session2_open: channel_new: 0
debug2: channel 0: send open
debug1: Requesting no-more-sessions@openssh.com
debug1: Entering interactive session.
debug2: callback start
debug2: client_session2_setup: id 0
debug2: fd 3 setting TCP_NODELAY
debug3: packet_set_tos: set IP_TOS 0x08
debug1: Sending environment.
debug3: Ignored env TERM
debug3: Ignored env SHELL
debug3: Ignored env XDG_SESSION_COOKIE
debug3: Ignored env SSH_CLIENT
debug3: Ignored env SSH_TTY
debug3: Ignored env USER
debug3: Ignored env LS_COLORS
debug3: Ignored env MAIL
debug3: Ignored env PATH
debug3: Ignored env PWD
debug1: Sending env LANG = en_US.UTF-8
debug2: channel 0: request env confirm 0
debug3: Ignored env SHLVL
debug3: Ignored env HOME
debug3: Ignored env LANGUAGE
debug3: Ignored env LS_OPTIONS
debug3: Ignored env LOGNAME
debug3: Ignored env SSH_CONNECTION
debug3: Ignored env _
debug1: Sending command: show environment all
debug2: channel 0: request exec confirm 1
debug2: callback done
debug2: channel 0: open confirm rwindow 256 rmax 128
debug2: channel_input_status_confirm: type 99 id 0
debug2: exec request accepted on channel 0

使用Go的crypto / ssh在cisco交换机上运行命令

0 个答案: