堡垒机python下ssh的使用

【堡垒机更多参考】http://www.cnblogs.com/alex3714/articles/5286889.html

【paramiko的Demo实例】https://github.com/paramiko/paramiko

Win7下paramiko的Demo远程登录执行交互命令：

【下载Demo文件】     https://github.com/paramiko/paramiko

【paramiko更多参考】paramiko模块学习

本机[win7]登录远程Linux服务器

Win7本机IP：  192.168.2.102

远程服务器IP： 192.168.2.105

关于Win7下执行原代码报错问题的解决：

错误现象：TypeError: write() argument must be str, not bytes

问题解决：F:\Django\paramiko-demo\paramiko-master\demos\interactive.py

Linux下paramiko的Demo远程登录执行交互命令：

下载Demo文件

https://github.com/paramiko/paramiko

上传文件到本机Linux服务器：

omc@omc-virtual-machine:~$  cd paramiko_demo/
omc@omc-virtual-machine:~/paramiko_demo$  ll

Linux登录其他的Linux服务器

Linxu本机IP：  192.168.25.110

远程服务器IP： 192.168.25.133

omc@omc-virtual-machine:~/paramiko_demo$  python3 demo.py
Hostname: 192.168.25.133
*** Unable to open host keys file
*** WARNING: Unknown host key!
Username [omc]: root
Auth by (p)assword, (r)sa key, or (d)ss key? [p]  p
Password for root@192.168.25.133:
*** Here we go!
Last login: Tue May  1 07:53:03 2018 from 192.168.25.110
[root@localhost ~]# 

omc@omc-virtual-machine:~/paramiko_demo$ ssh  root@192.168.25.133
The authenticity of host '192.168.25.133 (192.168.25.133)' can't be established.
RSA key fingerprint is SHA256:+v73ij2IHBzxee8o9n5rYkBJPwD96SaEBtxkuGBBCqg.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.25.133' (RSA) to the list of known hosts.
root@192.168.25.133's password:
Last login: Tue May  1 07:44:47 2018 from 192.168.25.1
[root@localhost ~]# logout
Connection to 192.168.25.133 closed.
omc@omc-virtual-machine:~/paramiko_demo$ python3 demo.py
Hostname: 192.168.25.133
*** Host key OK.
Username [omc]: root
Auth by (p)assword, (r)sa key, or (d)ss key? [p] p
Password for root@192.168.25.133:
*** Here we go!

注意：区别于第一次登录，第二次登录可以获取的133服务器的信息，没有了告警

paramiko的Demo分析以及改进

demo.py

interactive.py

paramiko的interactive改进：

import socket
import sys
import time
from paramiko.py3compat import u
# windows does not have termios...
try:import termiosimport ttyhas_termios = True
except ImportError:has_termios = False
def interactive_shell(chan):  # chan应该是个连接的实例if has_termios:  # 判断win还是Linuxposix_shell(chan)  # posix是Linux下的协议标准else:windows_shell(chan)def posix_shell(chan):  # chan 就是我们建立的连接实例import select  # IO多路复用，获取事件时会一个个的进行进行搜寻，直到找到那个事件oldtty = termios.tcgetattr(sys.stdin)try:tty.setraw(sys.stdin.fileno())tty.setcbreak(sys.stdin.fileno())chan.settimeout(0.0)cmd = []f = open('cmd.log', 'a')while True:  # select循环监测r, w, e = select.select([chan, sys.stdin], [], [])  # 3个参数分别为输入，输出，错误信息if chan in r:  # 如果远程有返回命令的结果，进行结果输出try:x = u(chan.recv(1024))  # 每次接收1KB的长度if len(x) == 0:  # 长度为0，表示没有接收到sys.stdout.write('\r\n*** EOF\r\n')breaksys.stdout.write(x)  # 接收到的结果写入屏幕sys.stdout.flush()  # 实时将内容刷入标准输出[屏幕]except socket.timeout:passif sys.stdin in r:  # 标准输入，即键盘输入x = sys.stdin.read(1)  # read()函数，输入一个读取一个发送一个[回车代表命令输入完成可以执行任务]if(x == '\r'):   # Linux下的回车是\r# print("".join(cmd))cmd_log_format = "%s-%s-%s\r" % (time.ctime(time.time()), 'root', "".join(cmd))f.write(cmd_log_format)cmd = []  # 情况作为下次使用else:cmd.append(x)if len(x) == 0:breakchan.send(x)  # 如果读到了输入内容，则发送到远程进行操作finally:termios.tcsetattr(sys.stdin, termios.TCSADRAIN, oldtty)# thanks to Mike Looijmans for this code
def windows_shell(chan):import threadingsys.stdout.write("Line-buffered terminal emulation. Press F6 or ^Z to send EOF.\r\n\r\n")def writeall(sock):while True:data = sock.recv(256)if not data:sys.stdout.write('\r\n*** EOF ***\r\n\r\n')sys.stdout.flush()breaksys.stdout.write(data.decode("utf-8"))sys.stdout.flush()writer = threading.Thread(target=writeall, args=(chan,))writer.start()try:while True:d = sys.stdin.read(1)if not d:breakchan.send(d)except EOFError:# user hit ^Z or F6pass

注：记录了文件，但是由点小bug，就是文件会记录下左右移动的操作[此时会转换为二进制的内容]