ssh accept "yes" in automation script possible ?

cloudsuser

ssh accept "yes" in automation script possible ?

With the help of ssh i am executing the script...

Before executing the ssh command, at very first time i need to do ssh manually and typing "yes" to accept RSA key fingerprint...Can we do it through automation by passing yes as an argument...

$

The authenticity of host 'hostname (xx.xx.xx.xx)' can't be established.

RSA key fingerprint is 83:71:28:7c:55:38:28:4e:9e:51:32:57:19:9e:d2:d9.

Are you sure you want to continue connecting (yes/no)? yes

CoderMan

http://linuxcommando.blogspot.com/2008/10/how-to-disable-ssh-host-key-checking.html

gomer

Yes you can.

Try launching it from expect, or using an expect module for your favorite scripting language. I do this all the time in python, and in regular tcl/expect.

#!/usr/bin/python
import pexpect, sys, time, re
SSH_NEWKEY = 'Are you sure you want to continue connecting'
 
  ssh = pexpect.spawn('ssh user-name@%s'%(host))
  retval = ssh.expect([SSH_NEWKEY, '[Pp]assword:', pexpect.EOF, pexpect.TIMEOUT]
, timeout = TIMEOUT)
  time.sleep(1)
 
  if retval == 0:
    ssh.sendline ('yes')
    i = ssh.expect(['[Pp]assword: ', pexpect.EOF, pexpect.TIMEOUT], timeout = TIMEOUT)
    time.sleep(1)
    if i > 0:
.....

OR

#!/usr/bin/expect
......
proc myconnect { ip pass enable } {
  if { $ip != "" } {
    spawn ssh admin@$ip 
    expect_before {
      "Connection closed by $ip" {
        catch { close -i $spawn_id }
        return 0
      }
    }
    expect {
    # anticipate connection issues along the way and not get hung up
      timeout {
        return 0
      }
      "Connection refused" {
        return 0
      }
      "Are you sure you want to continue connecting" {
        send "yes\r"
        exp_continue
      }
      "Do you want to change the host key on disk" {
        send "yes\r"
        exp_continue
      }
.......