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I am running Python 3.6.8 on RHEL 8

I am trying to connect to sftp on another server using this #!/usr/bin/env python

import pysftp

myHostname = I.I.I.I
myport = PPPP
myUsername = xxx
myPassword = xxx

cnopts = pysftp.CnOpts(knownhosts='/home/xxx/.ssh/known_hosts')

with pysftp.Connection(host=myHostname, port=myport, username=myUsername, password=myPassword, cnopts=cnopts) as sftp:

I get this error:

Exception has occurred: SSHException
No hostkey for host I.I.I.I found.
  File "/home/xxxx/python/xxxxy", line 16, in <module>
    with pysftp.Connection(host=myHostname, port=myport, username=myUsername, 
password=myPassword, cnopts=cnopts) as sftp:

But when I query cnopts.hostkeys I find the server listed

[I.I.I.I]:PPPP

the IP Address found in cnopts is the same IP Address in the SFTP command

if I insert this line into my script:

cnopts.hostkeys = None

I connect fine to the far end

This points that connectivity and authentication is working fine.

Any suggestions?

user10364931
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  • really weird...had the same issue, but I could connect with FileZilla / cyberduck and MacOs `sftp` cli ... then I tried to connect to another server (with python) and at some point it worked... ¯\_(ツ)_/¯ – jjrr Nov 02 '22 at 14:37

0 Answers0