# EXEC previous known host file not found for hostname

**URL:** <https://forum.ansible.com/t/exec-previous-known-host-file-not-found-for-hostname/19093>\
**Category:** Ansible Project\
**Tags:** ubuntu\
**Created:** [August 24, 2015, 4:39am UTC](https://forum.ansible.com/t/exec-previous-known-host-file-not-found-for-hostname/19093 "2015-08-24T04:39:28Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Sathya\_Narayanan1](https://avatars.discourse-cdn.com/v4/letter/s/58f4c7/32.png) [@Sathya\_Narayanan1](https://forum.ansible.com/u/Sathya_Narayanan1)\
**Post date:** [August 24, 2015, 4:39am UTC](https://forum.ansible.com/t/exec-previous-known-host-file-not-found-for-hostname/19093/1 "2015-08-24T04:39:28Z")

</div>

Hi,

I am getting below error “previous known host file not found”. Below error is from Tower, if i try to execute from Command it keeps running indefinitely

TASK: [Check Version] \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*  
\<[solaris.domain.com](http://solaris.domain.com) ESTABLISH CONNECTION FOR USER: sathya  
\<[solaris.domain.com](http://solaris.domain.com) REMOTE\_MODULE command chdir=/proj/new\_proj executable=/usr/bin/bash /usr/bin/bash /proj/new\_proj/new\_proj-install/manage-proj.sh “Check-Version”  
\<[solaris.domain.com](http://solaris.domain.com) EXEC sshpass -d15 ssh -C -tt -v -o ControlMaster=auto -o ControlPersist=60s -o ControlPath=“/tmp/ansible\_tower\_DoIJ9S/cp/ansible-ssh-%h-%p-%r” -o StrictHostKeyChecking=no -o Port=7777 -o GSSAPIAuthentication=no -o PubkeyAuthentication=no -o User=sathya -o ConnectTimeout=10 [solaris.domain.com](http://solaris.domain.com) /bin/sh -c

EXEC previous known host file not found for [solaris.domain.com](http://solaris.domain.com)

Ansible Version

sathya@ubuntu:~$ ansible --version  
ansible 1.9.2  
configured module search path = None

Tower Version 2.1.6