python paramiko通过远程操作linux

python-paramiko通过远程操作linux

1. python-paramiko通过远程操作linux

• python3 远程操作linux

  • 使用第三方paramiko库，对于实现运维自动部署很重要

    pip3 install  paramiko
    

  • 引用的cryptography输出有问题

    pip install cryptography
    

• 案例1：通过paramiko使用用户密码远程操作linux

  • 使用python编写，通过paramiko使用用户密码远程操作linux

    #!/usr/bin/env python
    # _*_ coding: utf-8 _*_
    # Author:shichao
    # File: .py
    
    import paramiko
    
    # 远程连接 ip和端口
    transport = paramiko.Transport( '192.168.0.200', 22 )
    
    # 连接私钥
    # pkey = paramiko.RSAKey.from_private_key_file( '/root/.ssh/id_rsa' )
    
    # 连接密码
    pwd = '123456'
    
    # 连接用户和密码
    transport.connect( username = 'root', password = pwd )
    # 通过paramiko ssh连接
    ssh = paramiko.SSHClient()
    ssh._transport = transport
    
    # stdio 是输入， stdout 是输出，stderr错误输出
    stdio, stdout, stderr = ssh.exec_command( "ifconfig eth0 | awk 'NR==2 {print $2}'" )
    channel = stdout.channel
    status = channel.recv_exit_status()
    
    # stdout标准输出读取数据
    stdout = stdout.read().decode()
    
    # stderr标准错误数据输出读取数据
    stderr = stderr.read().decode()
    
    ssh.close()
    transport.close()
    
    print( stdout )
    
    if status >= 1:
        print(stderr)
    else:
        print("执行成功")
    

  • 执行结果

    # python3 test_paramiko.py
    192.168.0.200
    

• 案例2：通过paramiko通过密钥远程操作linux

  • 本机安装服务器密钥

    [admin@shichaodeMacBook-Pro ~]# ssh-keygen -t rsa
    Generating public/private rsa key pair.
    Enter file in which to save the key (/Users/admin/.ssh/id_rsa):
    Enter passphrase (empty for no passphrase):
    Enter same passphrase again:
    Your identification has been saved in /Users/admin/.ssh/id_rsa
    Your public key has been saved in /Users/admin/.ssh/id_rsa.pub
    The key fingerprint is:
    SHA256:pU9abOwMKntMChDm70ffna5DCRy2n83c9I71aE7Sb+0 admin@shichaodeMacBook-Pro.local
    The key's randomart image is:
    +---[RSA 3072]----+
    |                 |
    |..     o         |
    |o.    o o .      |
    |..     + =   .   |
    | ..     S % o .  |
    |  .. ... # + o o |
    |  ..o+o + = o *.o|
    |   ..+o. o o +oo+|
    |    o.   .+. o.oE|
    +----[SHA256]-----+
    [admin@shichaodeMacBook-Pro ~]# cd .ssh
    [admin@shichaodeMacBook-Pro .ssh]# ll
    total 32
    drwx------   6 admin  staff   192 Jun 30 11:01 ./
    drwxr-xr-x+ 60 admin  staff  1920 Jun 30 10:59 ../
    -rw-------   1 admin  staff  2622 Jun 30 11:01 id_rsa
    -rw-r--r--   1 admin  staff   586 Jun 30 11:01 id_rsa.pub
    -rw-------   1 admin  staff  3616 Jun 10 13:59 known_hosts
    -rw-------   1 admin  staff  2950 May 10 16:50 known_hosts.old
    

  • 拷贝公钥到服务器端

    [admin@shichaodeMacBook-Pro .ssh]# ssh-copy-id root@192.168.0.200
    /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/Users/admin/.ssh/id_rsa.pub"
    The authenticity of host '192.168.0.200 (192.168.0.200)' can't be established.
    ED25519 key fingerprint is SHA256:s/wgZLKfYoMCzTXN3RNfjSlFi6a68iT0wQDkh1CUUQg.
    This key is not known by any other names
    Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
    /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
    /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
    root@192.168.0.200's password: 
    
    Number of key(s) added:        1
    
    Now try logging into the machine, with:   "ssh 'root@192.168.0.200'"
    and check to make sure that only the key(s) you wanted were added.
    
    

  • 使用key免密钥连接测试

    [admin@shichaodeMacBook-Pro .ssh]# ssh root@192.168.0.200
    Last login: Thu Jun 30 09:58:32 2022 from 192.168.0.160
    [root@ansible ~]# ifconfig
    docker0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
            inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
            ether 02:42:35:bb:34:55  txqueuelen 0  (Ethernet)
            RX packets 0  bytes 0 (0.0 B)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 0  bytes 0 (0.0 B)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    
    eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 192.168.0.200  netmask 255.255.255.0  broadcast 192.168.0.255
            inet6 fe80::20c:29ff:fe84:914d  prefixlen 64  scopeid 0x20<link>
            ether 00:0c:29:84:91:4d  txqueuelen 1000  (Ethernet)
            RX packets 441188  bytes 281747902 (268.6 MiB)
            RX errors 0  dropped 37  overruns 0  frame 0
            TX packets 243722  bytes 118421451 (112.9 MiB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    
    lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
            inet 127.0.0.1  netmask 255.0.0.0
            inet6 ::1  prefixlen 128  scopeid 0x10<host>
            loop  txqueuelen 1000  (Local Loopback)
            RX packets 3  bytes 208 (208.0 B)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 3  bytes 208 (208.0 B)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    

  • 使用python编写，通过paramiko使用免密钥的方式操作linux

    #!/usr/bin/env python
    # _*_ coding: utf-8 _*_
    # Author:shichao
    # File: .py
    
    import paramiko
    import  time
    
    # 远程连接 ip和端口
    transport = paramiko.Transport( '192.168.0.200', 22 )
    
    # 连接私钥
    pkey = paramiko.RSAKey.from_private_key_file( '/Users/admin/.ssh/id_rsa' )
    
    # 连接用户和密码
    transport.connect( username = 'root', pkey = pkey )
    # 通过paramiko ssh连接
    ssh = paramiko.SSHClient()
    ssh._transport = transport
    
    # stdio 是输入， stdout 是输出，stderr错误输出
    stdio, stdout, stderr = ssh.exec_command( "ifconfig eth0 | awk 'NR==2 {print $2}'" )
    time.sleep(2)
    channel = stdout.channel
    status = channel.recv_exit_status()
    
    # stdout标准输出读取数据
    stdout = stdout.read().decode()
    
    # stderr标准错误数据输出读取数据
    stderr = stderr.read().decode()
    
    ssh.close()
    transport.close()
    
    if status >= 1:
        print(stderr)
    else:
        print(stdout)
    

  • 运行脚本，查看结果

    # python3 test_paramiko.py
    192.168.0.200