golang:ssh:握手失败:EOF [英] golang: ssh: handshake failed: EOF

问题描述

我写了一个go项目来部署在线代码.我需要远程计算机并运行一些 start reload 之类的命令.

I wrote a go project to deploy online code. I need to remote machine and run some start reload like command.

我有200多台机器，所以我使用go例程来完成这项工作.

I have 200+ machines, so I use go routine to do this job.

问题是有时 ssh故障抛出 ssh:握手失败:EOF 或 ssh:握手失败:阅读tcp 10.19.177.216:44721->10.19.139.36:22:阅读:对等连接重置为什么?

The problem is sometimes ssh failure throw ssh: handshake failed: EOF or ssh: handshake failed: read tcp 10.19.177.216:44721->10.19.139.36:22: read: connection reset by peer why ?

我的核心代码:

func RunRemoteCmd(selfDesc string, host string, cmd string, ch chan<- RunResult) {
    startTime := time.Now()
    sshConfig := &ssh.ClientConfig{
        User: "root",
        Auth: []ssh.AuthMethod{
            publicKey,
        },
        HostKeyCallback: func(hostname string, remote net.Addr, key ssh.PublicKey) error {
            return nil
        },
    }

    addr := fmt.Sprintf("%s:22", host)
    connection, err := ssh.Dial("tcp", addr, sshConfig)
    if err != nil {
        ch <- RunResult{selfDesc, err.Error(), "", time.Since(startTime)}
        return
    }

    session, err := connection.NewSession()
    if err != nil {
        ch <- RunResult{selfDesc, err.Error(), "", time.Since(startTime)}
        return
    }
    defer session.Close()

    var out bytes.Buffer
    session.Stdout = &out

    session.Run(cmd)
    ch <- RunResult{selfDesc, "", out.String(), time.Since(startTime)}
}

推荐答案

也许远程服务器拒绝了多个ssh连接.

Maybe multiple ssh connection refuse by remote server.

我将一台服务器更改为 connection ，并将多个 NewSession 修复了此问题.

I change one server one connection and muliple NewSession fixed this problem.

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