使用本地主机上的python脚本传输文件(scp)并从jumpserver运行命令到finalserver [英] Transfer file(scp) and run command from jumpserver to finalserver using python script on localhost
问题描述
需要将文件上传到最终服务器,并且需要使用该文件作为输入来运行命令.
A file needs to be uploaded to final-server and a command needs to be run using that file as input.
以下将是要执行的整个操作的步骤(但我卡在第 3 步):
Following will be the steps for whole action to be performed (but I am stuck at step 3):
1 - 将文件从本地主机传输到跳转服务器(使用 scp)
1 - transfer file from localhost to jumpserver (using scp)
2 - ssh 到跳转服务器
2 - ssh to jumpserver
3 - 将文件从 jumpserver 传输到 finalserver(使用 scp)
3 - transfer file from jumpserver to finalserver (using scp)
4 - ssh 到最终服务器
4 - ssh to finalserver
5 - 在 finalserver 上运行命令(使用文件作为输入)
5 - run the command on finalserver (with file as input)
try:
cmd_str = "scp " + file_path + " " + user + "@" + jumpbox + ":/tmp/"
print "---------local to jumpbox initiated:"
#print cmd_str
child = pexpect.spawn(cmd_str) #-------------------------------------------------------step 1
child.expect("password:")
#pwd = raw_input("please enter password along with yubikey:")
pwd = getpass.getpass("Enter password along with yubikey:")
child.sendline(pwd)
i = child.expect(['Permission denied', filename])
if i==0:
print "Permission denied on host. Can't login"
pwd = getpass.getpass("Enter password along with yubikey:")
child.sendline(pwd)
#child.kill(0)
elif i==1:
print "file successfully transferred to jumpbox"
#----SSHing into jumpbox
ssh_jump_cmd = "ssh " + user + "@" + jumpbox
print ssh_jump_cmd
ssh_child = pexpect.spawn(ssh_jump_cmd) #-------------------------------------------------------step 2
ssh_child.expect("password:")
pwd2 = getpass.getpass("Enter password along with yubikey:")
ssh_child.sendline(pwd2)
i2 = ssh_child.expect(['Permission denied', '[#\$]'])
if i2 == 0:
print "Permission denied on host. Can't login. Try again"
pwd2 = getpass.getpass("Enter password along with yubikey:")
ssh_child.sendline(pwd2)
elif i2 == 1:
print "--------------Inside Jumpbox:"
#sending file from jumpbox to finalserver
ba_cmd = "scp /tmp/"+ filename + " " + cmd_var + ":/tmp/"
print ba_cmd
ba_child = pexpect.spawn(ba_cmd) #-------------------------------------------------------step 3
ba_child.expect("Enter passphrase for key:")
phrase = getpass.getpass("Enter passphrase: ")
ba_child.sendline(phrase)
print "Password should be asked:"
i3 = ba_child.expect(['Enter passphrase for key', 'Permission denied', filename])
if i3 == 0:
phrase = getpass.getpass("Enter passphrase: ")
ba_child.sendline(phrase)
elif i3 == 1:
print "Lost connection:"
ba_child.kill(0)
elif i3 == 2:
ssh_ba_cmd = "ssh " + smba
ba_ssh_child = pexpect.spawn(ssh_ba_cmd) #-------------------------------------------------------step 4
ba_ssh_child.expect("Enter passphrase for key: ")
phrase = getpass.getpass("Enter passphrase: ")
ba_ssh_child.sendline(phrase)
i4 = ba_ssh_child.expect(['Permission denied', '[#\$]'])
if i4 == 0:
print "Passphrase incorrect. Exiting"
ba_ssh_child.kill(0)
elif i4 == 1:
final_cmd = "ls -l" + filename #- just an example for this question
final_child = pexpect.spawn(final_cmd)
print "********************"
print sys.stdout
我使用 Python Pexpect
生成了孩子,并在通过 SSH 连接到 jumpserver 之前成功.当脚本尝试从 jumpserver SCP 到 finalserver 时,会生成以下错误:
I spawn child using Python Pexpect
and got successful till SSHing to jumpserver. When script tries to SCP from jumpserver to finalserver, following error gets generated :
scp /tmp/filename finalserver:/tmp/
End Of File (EOF). Exception style platform.
<pexpect.spawn object at 0x7efddfdad650>
version: 3.1
command: /usr/bin/scp
args: ['/usr/bin/scp', 'filename', 'finalserver:/tmp/']
searcher: <pexpect.searcher_re object at 0x7efddfdad5d0>
buffer (last 100 chars): ''
before (last 100 chars): 'ssh: Could not resolve hostname finalserver: Name or service not known\r\r\nlost connection\r\n'
after: <class 'pexpect.EOF'>
match: None
match_index: None
exitstatus: 1
flag_eof: True
pid: 7244
child_fd: 5
closed: False
timeout: 30
delimiter: <class 'pexpect.EOF'>
logfile: None
logfile_read: None
logfile_send: None
maxread: 2000
ignorecase: False
searchwindowsize: None
delaybeforesend: 0.05
delayafterclose: 0.1
delayafterterminate: 0.1
我经历了http://stackoverflow.com/questions/17913540/python-ssh-in-to-a-jumpserver-and-then-ssh-in-to-a-host-from-the-jumpserver-to-e
但仍需要帮助.
I went through http://stackoverflow.com/questions/17913540/python-ssh-in-to-a-jumpserver-and-then-ssh-in-to-a-host-from-the-jumpserver-to-e
but still need help.
TIA.
推荐答案
> ba_child = pexpect.spawn(ba_cmd)
您正在生成一个新的本地孩子.您应该改为将 scp
命令发送到在 jumpserver 上运行 shell 的 ssh_child
.
You are spawning a new local child. You should instead be sending the scp
command to the ssh_child
which is running a shell on the jumpserver.
这里的语法不稳定,但类似于
Shaky on the syntax here, but something like
ssh_child.sendline(ba_cmd)
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