CI Failure (key symptom) in NodesDecommissioningTest.test_multiple_decommissions

[vbotbuildovich]

https://buildkite.com/redpanda/vtools/builds/13648

Module: rptest.tests.nodes_decommissioning_test
Class: NodesDecommissioningTest
Method: test_multiple_decommissions

test_id:    NodesDecommissioningTest.test_multiple_decommissions
status:     FAIL
run time:   52.728 seconds

SSHException('Error reading SSH protocol banner')
Traceback (most recent call last):
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/paramiko/transport.py", line 2327, in _check_banner
    buf = self.packetizer.readline(timeout)
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/paramiko/packet.py", line 381, in readline
    buf += self._read_timeout(timeout)
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/paramiko/packet.py", line 618, in _read_timeout
    raise EOFError()
EOFError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/ducktape/tests/runner_client.py", line 184, in _do_run
    data = self.run_test()
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/ducktape/tests/runner_client.py", line 276, in run_test
    return self.test_context.function(self.test)
  File "/home/ubuntu/redpanda/tests/rptest/services/cluster.py", line 103, in wrapped
    r = f(self, *args, **kwargs)
  File "/home/ubuntu/redpanda/tests/rptest/tests/nodes_decommissioning_test.py", line 750, in test_multiple_decommissions
    self.start_producer()
  File "/home/ubuntu/redpanda/tests/rptest/tests/nodes_decommissioning_test.py", line 272, in start_producer
    self.producer.start(clean=False)
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/ducktape/services/service.py", line 265, in start
    self.start_node(node, **kwargs)
  File "/home/ubuntu/redpanda/tests/rptest/services/kgo_verifier_services.py", line 672, in start_node
    self.spawn(cmd, node)
  File "/home/ubuntu/redpanda/tests/rptest/services/kgo_verifier_services.py", line 155, in spawn
    pid_str = node.account.ssh_output(wrapped_cmd, timeout_sec=10)
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/ducktape/cluster/remoteaccount.py", line 41, in wrapper
    return method(self, *args, **kwargs)
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/ducktape/cluster/remoteaccount.py", line 381, in ssh_output
    client = self.ssh_client
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/ducktape/cluster/remoteaccount.py", line 217, in ssh_client
    self._set_ssh_client()
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/ducktape/cluster/remoteaccount.py", line 41, in wrapper
    return method(self, *args, **kwargs)
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/ducktape/cluster/remoteaccount.py", line 192, in _set_ssh_client
    client.connect(
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/paramiko/client.py", line 450, in connect
    t.start_client(timeout=timeout)
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/paramiko/transport.py", line 738, in start_client
    raise e
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/paramiko/transport.py", line 2143, in run
    self._check_banner()
paramiko.ssh_exception.SSHException: Error reading SSH protocol banner

JIRA Link: CORE-2925