import paramiko

ssh = paramiko.SSHClient()
HOSTNAME="192.168.0.27"
USERNAME="user1"
PASSWORD="pwd"
ssh.connect(HOSTNAME, username=USERNAME, password=PASSWORD)
ssh_stdin, ssh_stdout, ssh_stderr = ssh.exec_command("ps ax | grep 'user1'")

C:\Python36\python.exe C:/Server/repositories/templates/Test/SSH.py
Traceback (most recent call last):
  File "C:/Server/repositories/templates/Test/SSH.py", line 37, in <module>
    ssh.connect(HOSTNAME, username=USERNAME, password=PASSWORD)
  File "C:\Python36\lib\site-packages\paramiko\client.py", line 362, in connect
    server_key)
  File "C:\Python36\lib\site-packages\paramiko\client.py", line 673, in missing_host_key
    raise SSHException('Server %r not found in known_hosts' % hostname)
paramiko.ssh_exception.SSHException: Server '192.168.0.27' not found in known_hosts

telnet 192.168.0.27 22