[Python] Unable to execute shell script using ssh

def upload_script(cluster_config):
logger = default_logger
script_path =“some_path”
if not os.path.exists(script_path):
logger.error("IPv6 script not found at %s", script_path)
return
for node in cluster_config.cluster_members:
cvm_ip = getattr(node, "cvm_ipv6_address", node.cvm_ip)
logger.info("Connecting to CVM: %s", cvm_ip)
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
remote_path = "/home/nam/cluster/bin/ipv6_disable.sh"
try:
ssh.connect(hostname=cvm_ip, username="nam", password="namu")
with SCPClient(ssh.get_transport()) as scp:
scp.put(script_path, remote_path)
logger.info("Script uploaded to %s", remote_path)
ssh.exec_command(f"chmod +x {remote_path}")
logger.info("Script permissions changed to executable")
logger.info("Attempting SSH connection to %s", cvm_ip)
ssh.connect(hostname=cvm_ip, username="nam", password="namu")
stdin, stdout, stderr = ssh.exec_command(f"{remote_path}")
logger.info(stdout.read().decode())
exit_status = stdout.channel.recv_exit_status()
if exit_status == 0:
logger.info("Script executed successfully on %s", cvm_ip)
else:
logger.error("Script execution failed on %s:\n%s", cvm_ip, stderr.read().decode())
except Exception as e:
logger.info(stderr)
logger.error("Failed to upload/execute on %s: %s", cvm_ip, str(e))
finally:
ssh.close().


Why is my code failing with

2025-05-21 16:12:28,884Z fd_tools.py:2049 INFO Script uploaded to /home/nam/ster/bin/ipv6_disable.sh
2025-05-21 16:12:28,886Z sample.py:1304 ERROR Failed to upload IPV6 script.. ignoring
Traceback (most recent call last):
File "fd/fd_tools.py", line 2050, in upload_script
File "/home/nam/fd/lib/py/vendor/paramiko/client.py", line 560, in exec_command
chan = self._transport.open_session(timeout=timeout)
File "/home/nam/fd/lib/py/vendor/paramiko/transport.py", line 994, in open_session
return self.open_channel(
File "/home/nam/fd/lib/py/vendor/paramiko/transport.py", line 1136, in open_channel
raise e
paramiko.ssh_exception.ChannelException: ChannelException(2, 'Connect failed')


During handling of the above exception, another exception occurred:

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