CODEWITHSUNDEEP
ansiblestdout
Pratheesh
Pratheesh

Reputation: 635

How to see stdout,stderr of Ansible commands so as to be human readable?

I have created an Ansible task for deploying apache on my remote Ubuntu machine.The task is working fine.But i want to ensure that the stdout/err of the commands that ansible is running in the remote host is captured and printed on the stdout of when running ansible script.I have tried something like this 

 - name: a2dissite 000-default
   command: a2dissite 000-default
   register: out
 - debug: var=out.stdout_lines
 - debug: var=out.stderr_lines

Given below is what i got after running my ansible playbook

TASK [apache : a2dissite 000-default] ************************************************************************************************
changed: [ec2-host]

TASK [apache : debug] ****************************************************************************************************************
ok: [ec2-host] => {
    "out.stdout_lines": [
        "Site 000-default already disabled"
    ]
}

TASK [apache : debug] ****************************************************************************************************************
ok: [ec2-host] => {
    "out.stderr_lines": []
}

i can see the stdout and stderr for my commands .But its look weird, is there a way to just get the stdout and print it as is ?

Upvotes: 3

Views: 5950

Answers (1)

Zeitounator
Zeitounator

Reputation: 44615

If you want a real experience for humans, you should IMO focus on error reporting and idempotency which are core principles of ansible:

  • report "changed" when something effectively changed
  • report "ok" when no changes where made
  • give a meaningful error when it happens.

Not bulletproof but just to give you the idea (wrote on spot, not tested).

---
- name: Idempotency with command demo
  hosts: localhost

  tasks:
    - block:

        - name: Disable apache default site
          command: a2dissite 000-default
          register: dissitecmd
          changed_when: >-
            "already disabled" not in dissitecmd.stdout

      rescue:

        - name: Fail nicely with error
          fail:
            msg: "The default site could not be disabled. Error: {{ dissitecmd.stderr }}

Upvotes: 4

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