Paramiko is a Python SSHv2 protocol that provides client and server functionality. Although it uses a Python C to extend low-level encryption paramiko itself is a pure Python interface around the concept of SSH networking.
Install Paramiko
pip3 install paramiko
After installation, enter the python interpreter import module. If the import succeeds, the installation succeeds or the installation fails.
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Connect using username and password
# Import paramiko module
>>> import paramiko
# Create SSHClient objects
>>> ssh = paramiko.SSHClient()
# If it's a new host connection, yes/no will appear, and AutoAddPolicy will automatically fill in yes's
>>> ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
# Connecting servers
>>> ssh.connect(hostname='192.168.56.100', port=22, username='root', password='123456')
# Execution of orders
>>> stdin, stdout, stderr = ssh.exec_command('df -h')
# Get the right output
>>> result = stdout.read()
# Close the connection
>>> ssh.close()
# Obtained values
>>> result
b'Filesystem Size Used Avail Use% Mounted on\n/dev/sda3 48G 3.3G 45G 7% /\ndevtmpfs 984M 0 984M 0% /dev\ntmpfs 993M 0 993M 0% /dev/shm\ntmpfs 993M 8.9M 984M 1% /run\ntmpfs 993M 0 993M 0% /sys/fs/cgroup\n/dev/sda1 197M 137M 60M 70% /boot\ntmpfs 199M 0 199M 0% /run/user/0\n'
Connecting with a key
We need to do ssh-key authentication before using the aspect connection of the key. The steps are as follows:
[root@linux-node1 ~]# ssh-keygen -t rsa -f ~/.ssh/id_rsa -P '' [root@linux-node1 ~]# cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys [root@linux-node1 ~]# chmod 600 ~/.ssh/authorized_keys
Then download / root/.ssh/id_rsa and copy it to the E: python-intensive-training directory system. Here is the paramiko connection script under windows.
#!/use/bin/env python
# _*_ coding: utf-8 _*_
import paramiko
# Files with specified keys
private_key = paramiko.RSAKey.from_private_key_file('E:\python-intensive-training\id_rsa')
# Create SSH objects
ssh = paramiko.SSHClient()
# Allow connections to hosts that are not in the know_hosts file, or a new machine will let you type yes/no when it connects.
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
# Connecting servers
ssh.connect(hostname='192.168.56.100', port=22, username='root', pkey=private_key)
# Execution of orders
stdin, stdout, stderr = ssh.exec_command('df -h')
"""
stdin: Standard input
stdout: standard output
stderr: Error Output
"""
# Get the correct result of command execution
result = stdout.read()
# Close the connection
ssh.close()
# Output execution results
print(str(result, encoding='utf-8'))
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File upload and download
#!/usr/bin/python
import paramiko
t = paramiko.Transport(('192.168.56.100', 22))
t.connect(username="root", password="123456")
sftp = paramiko.SFTPClient.from_transport(t)
# Remote directory
remotepath = '/tmp/id_rsa'
# Local files
localpath = 'id_rsa'
# Upload files
sftp.put(localpath, remotepath)
# Download files
# sftp.get(remotepath, localpath)
# Close the connection
t.close()