def create(self):
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
look_for_keys = True
if self.path_to_private_key:
self.path_to_private_key = os.path.expanduser(
self.path_to_private_key)
look_for_keys = False
elif self.password:
look_for_keys = False
try:
LOG.debug(
"ssh.connect: ip: %s, port: %s, username: %s, "
"password: %s, key_filename: %s, look_for_keys: %s, "
"timeout: %s, banner_timeout: %s", self.ip, self.port,
self.login, self.password, self.path_to_private_key,
look_for_keys, self.conn_timeout, self.conn_timeout)
ssh.connect(self.ip,
port=self.port,
username=self.login,
password=self.password,
key_filename=self.path_to_private_key,
look_for_keys=look_for_keys,
timeout=self.conn_timeout,
banner_timeout=self.conn_timeout)
if self.conn_timeout:
transport = ssh.get_transport()
transport.set_keepalive(self.conn_timeout)
return ssh
except Exception as e:
msg = _("Check whether private key or password are correctly "
"set. Error connecting via ssh: %s") % e
LOG.error(msg)
raise exception.SSHException(msg)
def create(self):
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
look_for_keys = True
if self.path_to_private_key:
self.path_to_private_key = os.path.expanduser(
self.path_to_private_key)
look_for_keys = False
elif self.password:
look_for_keys = False
try:
ssh.connect(self.ip,
port=self.port,
username=self.login,
password=self.password,
key_filename=self.path_to_private_key,
look_for_keys=look_for_keys,
timeout=self.conn_timeout)
# Paramiko by default sets the socket timeout to 0.1 seconds,
# ignoring what we set through the sshclient. This doesn't help for
# keeping long lived connections. Hence we have to bypass it, by
# overriding it after the transport is initialized. We are setting
# the sockettimeout to None and setting a keepalive packet so that,
# the server will keep the connection open. All that does is send
# a keepalive packet every ssh_conn_timeout seconds.
if self.conn_timeout:
transport = ssh.get_transport()
transport.sock.settimeout(None)
transport.set_keepalive(self.conn_timeout)
return ssh
except Exception as e:
msg = _("Check whether private key or password are correctly "
"set. Error connecting via ssh: %s") % e
LOG.error(msg)
raise exception.SSHException(msg)
