def __init__(self,
ip_address=None,
username='******',
password=None,
key=None,
connection_timeout=600,
retry_interval=10):
self.client_log = cclogging.getLogger(
cclogging.get_object_namespace(self.__class__))
self.ip_address = ip_address
self.username = username
self.password = password
self.connection_timeout = connection_timeout
# Verify the IP address has a valid format
try:
IP(ip_address)
except ValueError:
raise InvalidAddressFormat(ip_address)
# Verify the server can be pinged before attempting to connect
PingClient.ping_until_reachable(ip_address,
timeout=connection_timeout,
interval_time=retry_interval)
if key is not None:
auth_strategy = SSHAuthStrategy.KEY_STRING
else:
auth_strategy = SSHAuthStrategy.PASSWORD
allow_agent = True
if not key:
allow_agent = False
self.ssh_client = SSHClient(username=self.username,
password=self.password,
host=self.ip_address,
tcp_timeout=20,
auth_strategy=auth_strategy,
look_for_keys=False,
key=key,
allow_agent=allow_agent)
self.ssh_client.connect_with_timeout(cooldown=20,
timeout=connection_timeout)
if not self.ssh_client.is_connected():
message = ('SSH timeout after {timeout} seconds: '
'Could not connect to {ip_address}.')
raise SshConnectionException(
message.format(timeout=connection_timeout,
ip_address=ip_address))
def __init__(self, ip_address=None, username='******', password=None,
key=None, connection_timeout=600, retry_interval=10):
self.client_log = cclogging.getLogger(
cclogging.get_object_namespace(self.__class__))
if ip_address is None:
raise ServerUnreachable("None")
self.ip_address = ip_address
self.username = username
self.password = password
self.connection_timeout = connection_timeout
# Verify the server can be pinged before attempting to connect
start = int(time.time())
reachable = False
while not reachable:
reachable = PingClient.ping(ip_address)
if reachable:
break
time.sleep(retry_interval)
if int(time.time()) - start >= connection_timeout:
raise ServerUnreachable(ip_address)
if key is not None:
auth_strategy = SSHAuthStrategy.KEY_STRING
else:
auth_strategy = SSHAuthStrategy.PASSWORD
self.ssh_client = SSHClient(
username=self.username, password=self.password,
host=self.ip_address, tcp_timeout=20, auth_strategy=auth_strategy,
look_for_keys=False, key=key)
self.ssh_client.connect_with_timeout(
cooldown=20, timeout=connection_timeout)
if not self.ssh_client.is_connected():
message = ('SSH timeout after {timeout} seconds: '
'Could not connect to {ip_address}.')
raise SshConnectionException(message.format(
timeout=connection_timeout, ip_address=ip_address))
