libcloud FileDeployment SSHClient._transport为NoneType

Question

>>>dns_node = [i for i in conn.list_nodes() if i.uuid == 'xxxxxxxxxxxxxxxxxxxxxxx07xxxxxxxxxx']
>>>try_script = 'path/to/somefile.py'
>>>dns_file = FileDeployment(try_script, target='/home/ec2-user')
>>>ssh_client = SSHClient(dns_node[0].public_ip[0], username='ec2-user',  key=os.path.expanduser("~/.ssh/id_rsa"))
>>>dns_file.run(dns_node, ssh_client)

I've verified that each of these variables assigned show me what I understand to be of the appropriate type. When I try this, I get the following:

Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/Users/ec2-user/Envs/libcloud/lib/python2.7/site-packages/libcloud/compute/deployment.py", line 111, in run contents=content) File "/Users/ec2-user/Envs/libcloud/lib/python2.7/site-packages/libcloud/compute/ssh.py", line 174, in put sftp = self.client.open_sftp() File "/Users/ec2-user/Envs/libcloud/lib/python2.7/site-packages/paramiko/client.py", line 414, in open_sftp return self._transport.open_sftp_client() AttributeError: 'NoneType' object has no attribute 'open_sftp_client'

This is what I have for the above objects:

dns_node:

`[<Node: uuid=xxxxxxxxxxxxxxxxxxxxxxx, name=ec2_node1, state=0, public_ips=['xx.xxx.xxx.xx'], provider=Amazon EC2 ...>]`

dns_file:

<libcloud.compute.deployment.FileDeployment object at 0x10d58de50>

ssh_client:

`<libcloud.compute.ssh.ParamikoSSHClient object at 0x10d55e950>`

ssh_client.connect:

<bound method ParamikoSSHClient.connect of <libcloud.compute.ssh.ParamikoSSHClient object at 0x10d55e950>>

What am I missing?

Answer 1

Went to the paramiko level and discovered the private key file I referenced is encrypted, which was not being handled in the ssh connection being made. So even though there was an SSHCLient object, it was not able to connect.

pkey = paramiko.RSAKey.from_private_key_file(os.path.expanduser('~/.ssh/id_rsa')) Traceback (most recent call last): File "", line 1, in File "/Users/ec2-user/Envs/libcloud/lib/python2.7/site-packages/paramiko/pkey.py", line 198, in from_private_key_file key = cls(filename=filename, password=password) File "/Users/ec2-user/Envs/libcloud/lib/python2.7/site-packages/paramiko/rsakey.py", line 51, in init self._from_private_key_file(filename, password) File "/Users/ec2-user/Envs/libcloud/lib/python2.7/site-packages/paramiko/rsakey.py", line 163, in _from_private_key_file data = self._read_private_key_file('RSA', filename, password) File "/Users/ec2-user/Envs/libcloud/lib/python2.7/site-packages/paramiko/pkey.py", line 280, in _read_private_key_file data = self._read_private_key(tag, f, password) File "/Users/ec2-user/Envs/libcloud/lib/python2.7/site-packages/paramiko/pkey.py", line 323, in _read_private_key raise PasswordRequiredException('Private key file is encrypted') paramiko.PasswordR equiredException: Private key file is encrypted

I specified a password-less key and the connection went through.