I wrote a go project to deploy online code. I need to remote machine and run some start reload like command.
I have 200+ machines, so I use go routine to do this job.
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 ?
My core code:
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)} } 1 Answer
Maybe multiple ssh connection refuse by remote server.
I change one server one connection and muliple NewSession fixed this problem.
