I am trying to connect to a remote server using Go. This is what I am using: (SSH Handshake complains about missing host key)
key, err := ioutil.ReadFile("/Users/pankaj/.ssh/id_rsa")
if err != nil {
log.Fatalf("unable to read private key: %v", err)
}
// Create the Signer for this private key.
signer, err := ssh.ParsePrivateKey(key)
if err != nil {
log.Fatalf("unable to parse private key: %v", err)
}
hostKeyCallback, err := knownhosts.New("/Users/pankaj/.ssh/known_hosts")
if err != nil {
log.Fatal(err)
}
sshConfig := &ssh.ClientConfig{
User: "pankaj",
Auth: []ssh.AuthMethod{
ssh.PublicKeys(signer),
},
HostKeyCallback: hostKeyCallback,
}
conn, err := ssh.Dial("tcp", "dev.letsreap.com:22", sshConfig)
if err != nil {
log.Fatalf("unable to connect: %v", err)
}
However on ssh.Dial I am getting:
ssh: handshake failed: knownhosts: key mismatch
I have verified that I can connect to the remote server from the command line. Also I can connect successfully if I use ssh.InsecureIgnoreHostKey(). What am I missing?
I figured it out eventually. There were indeed multiple entries in known_hosts file, one with the hostname and another with the IP address. That's why I did not spot it earlier. Thanks @JimB for the hint!