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Python paramiko notes

Date: 2010-02-24  |   Modified: 2010-04-08  |   Tags: python, ssh

Paramiko is a Python ssh package. The following is an example that makes use of my ssh config file, creates a ssh client, runs a command on a remote server, and reads a remote file using sftp. Paramiko is released under the GNU LGPL

Install paramiko

Example

from paramiko import SSHClient, SSHConfig

# ssh config file
config = SSHConfig()
config.parse(open('/home/saltycrane/.ssh/config'))
o = config.lookup('testapa')

# ssh client
ssh_client = SSHClient()
ssh_client.load_system_host_keys()
ssh_client.connect(o['hostname'], username=o['user'], key_filename=o['identityfile'])

# run a command
print "\nRun a command"
cmd = 'ps aux'
stdin, stdout, stderr = ssh_client.exec_command(cmd)
for i, line in enumerate(stdout):
    line = line.rstrip()
    print "%d: %s" % (i, line)
    if i >= 9:
        break

# open a remote file
print "\nOpen a remote file"
sftp_client = ssh_client.open_sftp()
sftp_file = sftp_client.open('/var/log/messages')
for i, line in enumerate(sftp_file):
    print "%d: %s" % (i, line[:15])
    if i >= 9:
        break
sftp_file.close()
sftp_client.close()

# close ssh client
ssh_client.close()

Results:

Run a command
0: USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
1: root         1  0.0  0.0   1920   536 ?        S     2009   0:00 /sbin/init
2: root         2  0.0  0.0      0     0 ?        S     2009   0:00 [migration/0]
3: root         3  0.0  0.0      0     0 ?        SN    2009   0:00 [ksoftirqd/0]
4: root         4  0.0  0.0      0     0 ?        S     2009   0:00 [watchdog/0]
5: root         5  0.0  0.0      0     0 ?        S<    2009   0:00 [events/0]
6: root         6  0.0  0.0      0     0 ?        S<    2009   0:00 [khelper]
7: root         7  0.0  0.0      0     0 ?        S<    2009   0:00 [kthread]
8: root         8  0.0  0.0      0     0 ?        S<    2009   0:00 [xenwatch]
9: root         9  0.0  0.0      0     0 ?        S<    2009   0:00 [xenbus]

Open a remote file
0: Feb 21 06:47:03
1: Feb 21 07:14:03
2: Feb 21 07:34:03
3: Feb 21 07:54:04
4: Feb 21 08:14:04
5: Feb 21 08:34:05
6: Feb 21 08:54:05
7: Feb 21 09:14:05
8: Feb 21 09:34:06
9: Feb 21 09:54:06

See also

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