FreeKB - Ansible Resolve "non-zero return code"
Ansible - Resolve "non-zero return code"

non-zero return code is displayed when using the shell module and the return code is something other than 0. For example, the following shell command will almost always have a return code of 1.

---
- hosts: all
  tasks:
    - name: ps command
      shell: "ps | grep foo"

 

Running this playbook will return the following.

PLAY [all]

TASK [Gathering Facts]
ok: [server1.example.com]

TASK [ps command]
fatal: [server1.example.com]: FAILED! => {"changed": true, "cmd": "ps | grep foo", "delta": "0:00:00.021343", "end": "2020-03-13 21:52:36.185781", "msg": "non-zero return code", "rc": 1, "start": "2020-03-13 21:52:36.164438", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}

PLAY RECAP
server1.example.com : ok=1  changed=0  unreacable=0  failed=1

 

 

Since a return code of 0 and 1 are ok with the ps command, the failed_when module can be used to fail when the rc (return code) is not 0 or 1, like this.

---
- hosts: all
  tasks:
    - name: ps command
      shell: "ps | grep foo"
      register: ps
      failed_when: "ps.rc not in [ 0, 1 ]"

 



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