Using python to implement host batch management

In daily operation and maintenance work, it is very common to batch host hosts. There are also many host batch management software on the market, but sometimes these software cannot fully meet our needs. Python just provides a module for host batch management. Today let us take a look at how to use python to implement host batch management.

Python mainly provides three modules for host batch management: paramiko, fabric and pexpect. Today we Mainly talking about the paramiko module, which is a third-party module.

Installation: pip install paramiko or yum install python-paramiko. If both installations fail, you can use the source code to install

Source code package download address: https://github.com/paramiko/paramiko/archive/master.zip

Common operations:

ssh = paramiko.SSHClient() //Instantiation, ssh session class

ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) //The automatic answer for the first connection is yes

ssh.connect('server ip', port, 'username', 'password') / /Connect to the server

stdin,stdout,stderr = ssh.exec_command("command") //Execute the command, standard output, the command will be returned successfully, the command failure will be returned

ssh.close()                              /Close the connection

Upload, download:

get_put = paramiko.Transport((ip,port)) //Server ip and port (used when using SFTP)

get_put .connect(username="root", password="123.com") //Connect to the server, username and password

sftp = paramiko.SFTPClient.from_transport(get_put) //Use SFTP protocol

sftp.put(The file to be uploaded, the location where the uploaded file is saved) //Upload

sftp.get(The location of the downloaded file, the location where the downloaded file is saved) //Download

Host Batch management:

#!/usr/bin/python

#-*- coding: utf-8 -*-

import paramiko

import os

def Connect(ip='127.0.0.1',Port=22,user='root',pwd='123.com'):

ssh = paramiko.SSHClient()

ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())

ssh.connect(hostname=ip, port=Port, username=user, password=pwd) #Connect to server

Return ssh                                                         #Return the server handle

def IP_ADD(ip):                                                                                                   

if len(__ip) == 2:                         #If it is an address range

                                                                                                                                        ‐ down ‐ ‐ ‐ ‐ ‐ ‐ , ​ ​ ​ ​ ​ ​ ​ ​ ​[1])             #Retrieve ip The maximum value

Host_ip_split = ip_add.split('.') #Separate the ip into 4 segments by .

Host_ip = int(host_ip_split.pop()) #Get the minimum value of the ip

ip_3 = '.'.join(host_ip_split)+'.' #Resplice the remaining parts that have removed the minimum value of ip

host_add_range = range(host_ip,ip_range+1) #Generate the range of connection IP

Add_pool = []

for i in host_add_range:

Add = ip_3+str(i) #Splicing into a legal ip address

add_pool.append (add)

# Return add_pool#Return address pool

Elif Len (__ IP) == 1:#If the input is a single address

valid_ip = __ip[0]

ip_value = valid_ip.split('.')[0:4] #Detect the legality of ip

[int(i) for i in ip_value]

# Return __IP#Return address

If __Name__ == '__main __Main __Main __N:

## OSYSTEM (' Clear ')

## Fa = True

while Fa:

ip = raw_input('Please enter an ip address or an address range: ')

exclude_ip = raw_input('Please enter the address to be excluded: ' ')

try:

ip_list = IP_ADD(ip) #Leave the IP input by the user to the function

if exclude_ip.strip(): #Determine whether the user wants to Excluding the address in the address pool

Exclude_add = Exclude_ip.split (',')#define the exclusion format

[ip_list.remove (i) for I in Exclude_add]

##                                                             '''Example:

127.0.0.1 Pay operation operation operation

127.0.0.1- 254 The host execution operation of a address range

127.0.0.8,127.0.0.10 Eliminate the address to eliminate the address The address in the pool

''

# counter

\ 033 [31M Input Script_exit Exit Programs \ 033 [0m '

##Aile True:

Shell_comd = raw_input ('Please enter the command of executing:')#The command of executing

iF shell_comd == 'script_exit':

## Break

# for i in ip_list:                     #Cycle address pool

          try:

                                                            ’s ’ s           ’ s         out out out through out out through off ‐   ‐ ‐ ‐ ‐ ‐ um stdin, stdout, stderr = comd.exec_command( shell_comd) #Execute the command

stderr = stderr.read() #The result of the correct execution of the command

stdout = stdout.read() #The command of the wrong execution

If Stdout:

PRINT '\ 033 [31m +++++++++ ++++ +++++++++ 033 [0m'%i

Print Stdout

Else:

Print '\ 033 [31m +++++++++++ +++++++++++ \ 033 [0m'%i

# Except:

PRINT '\033[31m%s connection failed\033[0m' %i

paramiko can also implement batch download and batch upload of files. The principle is basically the same as batch execution of commands.

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