# ansible pipelining config for aix

**URL:** <https://forum.ansible.com/t/ansible-pipelining-config-for-aix/22674>\
**Category:** Ansible Project\
**Created:** [September 29, 2016, 10:49am UTC](https://forum.ansible.com/t/ansible-pipelining-config-for-aix/22674 "2016-09-29T10:49:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![hzj.zh](https://avatars.discourse-cdn.com/v4/letter/h/b9bd4f/32.png) [@hzj.zh](https://forum.ansible.com/u/hzj.zh)\
**Post date:** [September 29, 2016, 10:49am UTC](https://forum.ansible.com/t/ansible-pipelining-config-for-aix/22674/1 "2016-09-29T10:49:32Z")

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hello，all

when i set pipelining = True in ansible.cfg，

when i execute task for aix,  
adhoc returns MODULE FAILURE,

playbook returns “module\_stderr”: “3004-501 Cannot su to "root" : Authentication is denied.\n”

is there a way to solve this?

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<div class="post-metadata">

**Author:** ![Brian\_Coca](https://avatars.discourse-cdn.com/v4/letter/b/6de8d8/32.png) [@Brian\_Coca](https://forum.ansible.com/u/Brian_Coca)\
**Post date:** [September 30, 2016, 1:56pm UTC](https://forum.ansible.com/t/ansible-pipelining-config-for-aix/22674/2 "2016-09-30T13:56:00Z")

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The pipelining feature does not work with `su`. This is because su NEEDS a tty and pipelining avoids opening one.