Python - ValueError: I/O operation on closed file

Archives Ansible Project
1

Ansible 2.0.1

When I ssh into a Linux server and run:

$ ansible-playbook -vvvvvv build.yml

it runs fine.

But if I ssh into the Linux server and run:

$ nohup ansible-playbook -vvvvvv build.yml

or

$ ansible-playbook -vvvvvv build.yml > output &

or

$ nohup ansible-playbook -vvvvvv build.yml > nohup.out

or

`
$ nohup ansible-playbook -vvvvvv build.yml > nohup.out 2>&1 &

`

it always fails on this task:

`

  • name: wait for something to happen
    pause: seconds=15
    `

Like this:

TASK [wait for something to happen] ************************************************** task path: /build.yml:94 Pausing for 15 seconds (ctrl+C then 'C' = continue early, ctrl+C then 'A' = abort) An exception occurred during task execution. The full traceback is: Traceback (most recent call last): File "/usr/local/lib/python2.7/site-packages/ansible/executor/task_executor.py", line 120, in run res = self._execute() File "/usr/local/lib/python2.7/site-packages/ansible/executor/task_executor.py", line 418, in _execute result = self._handler.run(task_vars=variables) File "/usr/local/lib/python2.7/site-packages/ansible/plugins/action/pause.py", line 123, in run fd = self._connection._new_stdin.fileno() ValueError: I/O operation on closed file fatal: [localhost]: FAILED! => {"failed": true, "msg": "Unexpected failure during module execution.", "stdout": ""}

I’m pretty sure it has something to do with STDOUT not being available but I’m not sure of the workaround. Anyone
have a suggestion?

2

I guess I don’t even understand why the Ansible “pause” module would care about stdout.

J

3

Looking at the code for the pause module:

`
if seconds is not None:

setup the alarm handler

signal.signal(signal.SIGALRM, timeout_handler)
signal.alarm(seconds)

show the prompt

display.display(“Pausing for %d seconds” % seconds)
display.display(“(ctrl+C then ‘C’ = continue early, ctrl+C then ‘A’ = abort)\r”),
else:
display.display(prompt)

`


|

  • |

Even if you only want pause to wait some amount of time, the module still expects STDIN to be available after prompting for ctrl+C.

So, this worked:

$ nohup ansible-playbook -vvvvvv build.yml 0</dev/null

It keeps STDIN open but provides no input.

4

Looks like this issue was fixed today: https://github.com/ansible/ansible/pull/14755