def test__get_connection_exception(self, ssh_connect_mock):
ssh_connect_mock.side_effect = iter(
[exception.SSHConnectFailed(host='fake')])
self.assertRaises(exception.SSHConnectFailed, ssh._get_connection,
self.node)
driver_info = ssh._parse_driver_info(self.node)
ssh_connect_mock.assert_called_once_with(driver_info)
def ssh_connect(connection):
"""Method to connect to a remote system using ssh protocol.
:param connection: a dict of connection parameters.
:returns: paramiko.SSHClient -- an active ssh connection.
:raises: SSHConnectFailed
"""
try:
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(connection.get('host'),
username=connection.get('username'),
password=connection.get('password'),
port=connection.get('port', 22),
key_filename=connection.get('key_filename'),
timeout=connection.get('timeout', 10))
# send TCP keepalive packets every 20 seconds
ssh.get_transport().set_keepalive(20)
except Exception as e:
LOG.debug(_("SSH connect failed: %s") % e)
raise exception.SSHConnectFailed(host=connection.get('host'))
return ssh
def test__get_connection_exception(self):
with mock.patch.object(utils, 'ssh_connect') as ssh_connect_mock:
ssh_connect_mock.side_effect = exception.SSHConnectFailed(
host='fake')
self.assertRaises(exception.SSHConnectFailed, ssh._get_connection,
self.node)
driver_info = ssh._parse_driver_info(self.node)
ssh_connect_mock.assert_called_once_with(driver_info)
def test__validate_info_ssh_connect_failed(self, ssh_connect_mock):
info = ssh._parse_driver_info(self.node)
ssh_connect_mock.side_effect = exception.SSHConnectFailed(host='fake')
with task_manager.acquire(self.context, info['uuid'],
shared=False) as task:
self.assertRaises(exception.InvalidParameterValue,
task.driver.power.validate, task)
driver_info = ssh._parse_driver_info(task.node)
ssh_connect_mock.assert_called_once_with(driver_info)
def test__validate_info_ssh_connect_failed(self):
info = ssh._parse_driver_info(self.node)
self.get_conn_patcher.stop()
self.get_conn_mock = None
with mock.patch.object(utils, 'ssh_connect') \
as ssh_connect_mock:
ssh_connect_mock.side_effect = exception.SSHConnectFailed(
host='fake')
with task_manager.acquire(self.context, [info['uuid']],
shared=False) as task:
self.assertRaises(exception.InvalidParameterValue,
task.resources[0].driver.power.validate,
task, self.node)
driver_info = ssh._parse_driver_info(self.node)
ssh_connect_mock.assert_called_once_with(driver_info)
def ssh_connect(connection):
"""Method to connect to a remote system using ssh protocol.
:param connection: a dict of connection parameters.
:returns: paramiko.SSHClient -- an active ssh connection.
:raises: SSHConnectFailed
"""
try:
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
key_contents = connection.get('key_contents')
if key_contents:
data = six.moves.StringIO(key_contents)
if "BEGIN RSA PRIVATE" in key_contents:
pkey = paramiko.RSAKey.from_private_key(data)
elif "BEGIN DSA PRIVATE" in key_contents:
pkey = paramiko.DSSKey.from_private_key(data)
else:
# Can't include the key contents - secure material.
raise ValueError(_("Invalid private key"))
else:
pkey = None
ssh.connect(connection.get('host'),
username=connection.get('username'),
password=connection.get('password'),
port=connection.get('port', 22),
pkey=pkey,
key_filename=connection.get('key_filename'),
timeout=connection.get('timeout', 10))
# send TCP keepalive packets every 20 seconds
ssh.get_transport().set_keepalive(20)
except Exception as e:
LOG.debug("SSH connect failed: %s" % e)
raise exception.SSHConnectFailed(host=connection.get('host'))
return ssh
def _get_ssh_connection(connection):
"""Returns an SSH client connected to a node.
:param node: the Node.
:returns: paramiko.SSHClient, an active ssh connection.
"""
try:
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
key_contents = connection.get('key_contents')
if key_contents:
data = six.StringIO(key_contents)
if "BEGIN RSA PRIVATE" in key_contents:
pkey = paramiko.RSAKey.from_private_key(data)
elif "BEGIN DSA PRIVATE" in key_contents:
pkey = paramiko.DSSKey.from_private_key(data)
else:
# Can't include the key contents - secure material.
raise ValueError(_("Invalid private key"))
else:
pkey = None
ssh.connect(connection.get('host'),
username=connection.get('username'),
password=None,
port=connection.get('port', 22),
pkey=pkey,
key_filename=connection.get('key_filename'),
timeout=connection.get('timeout', 10))
# send TCP keepalive packets every 20 seconds
ssh.get_transport().set_keepalive(20)
except Exception as e:
LOG.debug("SSH connect failed: %s", e)
raise exception.SSHConnectFailed(host=connection.get('host'))
return ssh
