socket.gaierror: [Errno 8] nodename nor servname provided, or not known

[Kaushal Shriyan]

Hi,

 

cat fabfile.py
from fabric import task, Connection

@task
def check_kernel_version(c):
    password = 'dac@123'
    connect_kwargs = {'password': password}
    connection = Connection(host="192.168.0.188", user="root", connect_kwargs=connect_kwargs)
    result = connection.run('uname -a')

@task
def check_os_version(c):
    connect_kwargs={"key_filename": "/Users/kaushalshriyan/.ssh/id_rsa"}
    for host in ('192.168.0.167', '192.168.0.79', '192.168.0.151'):
        connection = Connection(host="host", user="root", connect_kwargs=connect_kwargs)
        result = connection.run('uname -a')

$ fab2 check-kernel-version
Linux hsbcobsstomcatbahrainms 3.10.0-1160.59.1.el7.x86_64 #1 SMP Wed Feb 23 16:47:03 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.9/bin/fab2", line 8, in <module>
    sys.exit(program.run())
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/invoke/program.py", line 384, in run
    self.execute()
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/invoke/program.py", line 566, in execute
    executor.execute(*self.tasks)
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/invoke/executor.py", line 129, in execute
    result = call.task(*args, **call.kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/invoke/tasks.py", line 127, in __call__
    result = self.body(*args, **kwargs)
  File "/Users/kaushalshriyan/fabfile.py", line 15, in check_os_version
    result = connection.run('uname -a')
  File "<decorator-gen-10>", line 2, in run
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/fabric/connection.py", line 29, in opens
    self.open()
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/fabric/connection.py", line 636, in open
    self.client.connect(**kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/paramiko/client.py", line 340, in connect
    to_try = list(self._families_and_addresses(hostname, port))
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/paramiko/client.py", line 203, in _families_and_addresses
    addrinfos = socket.getaddrinfo(
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/socket.py", line 953, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno 8] nodename nor servname provided, or not known
$

I have defined def check_kernel_version(c) in the fabile.py but when i 

$fab2 check_kernel_version

No idea what 'check_kernel_version' is!

$fab2 check-kernel-version
Linux hsbcobsstomcatbahrainms 3.10.0-1160.59.1.el7.x86_64 #1 SMP Wed Feb 23 16:47:03 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

I am not sure how does it work?

For $ fab2 check-os-version

I am encountering socket.gaierror: [Errno 8] nodename nor servname provided, or not known

Please guide. Thanks in advance.

Best Regards,

Kaushal