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Fix all outputs|failed and outputs is defined

The ansible "failed_when" filter that uses a registered output
of a previous task piped to the '|failed' filter does not work
as expected. Given the following playbook:

  - name: return code
    shell: |
      echo "fail 2"
      exit 2
    failed_when: false
    log_when: false
    register: outputs
  - debug:
      msg: "rc: {{ outputs.rc }}"
  - debug: msg="Broken (does not fail as expected)"
    when: outputs is defined
    failed_when: outputs|failed
  - debug: msg="Working (fails as expected)"
    when: outputs is defined
    failed_when: outputs.rc != 0

We obtain the following output:

TASK [return code] ****
changed: [localhost]

TASK [debug] **********
ok: [localhost] => {
    "msg": "rc: 2"
}

TASK [debug] **********
ok: [localhost] => {
    "failed_when_result": false,
    "msg": "Broken (does not fail as expected)"
}

TASK [debug] **********
fatal: [localhost]: FAILED! => {
    "failed_when_result": true,
    "msg": "Working (fails as expected)"
}

This means that the 'outputs|failed' just does not work at all.
Let's move to a more explicit check on the rc code of the registered
variable.

We also need to fix all the "outputs is defined" checks, because
when a task is skipped the registered outputs variable *is* actually
defined as the following dictionary:
{'skip_reason': u'Conditional result was False', 'skipped': True, 'changed': False}

So we use "outputs.rc is defined" in order to make sure that the
previous task did indeed run.

Closes-Bug: #1733402

Change-Id: I6ef53dc3f9aede42f10c7f110d24722355481261
changes/46/521646/3
Michele Baldessari 4 years ago
parent
commit
ed2b957a4f
  1. 14
      common/deploy-steps-tasks.yaml
  2. 4
      extraconfig/services/kubernetes-master.yaml

14
common/deploy-steps-tasks.yaml

@ -25,7 +25,7 @@
no_log: true
become: true
- debug: var=(outputs.stderr|default('')).split('\n')|union(outputs.stdout_lines|default([]))
when: outputs is defined
when: outputs.rc is defined
failed_when: outputs.rc not in [0, 2]
######################################
# Generate config via docker-puppet.py
@ -44,8 +44,8 @@
no_log: true
become: true
- debug: var=(outputs.stderr|default('')).split('\n')|union(outputs.stdout_lines|default([]))
when: outputs is defined
failed_when: outputs|failed
when: outputs.rc is defined
failed_when: outputs.rc != 0
##################################################
# Per step starting of the containers using paunch
##################################################
@ -70,8 +70,8 @@
no_log: true
become: true
- debug: var=(outputs.stderr|default('')).split('\n')|union(outputs.stdout_lines|default([]))
when: outputs is defined
failed_when: outputs|failed
when: outputs.rc is defined
failed_when: outputs.rc != 0
########################################################
# Bootstrap tasks, only performed on bootstrap_server_id
########################################################
@ -95,5 +95,5 @@
no_log: true
become: true
- debug: var=(outputs.stderr|default('')).split('\n')|union(outputs.stdout_lines|default([]))
when: outputs is defined
failed_when: outputs|failed
when: outputs.rc is defined
failed_when: outputs.rc != 0

4
extraconfig/services/kubernetes-master.yaml

@ -163,5 +163,5 @@ outputs:
- name: print kubespray outputs
debug:
var: (outputs.stderr|default('')).split('\n')|union(outputs.stdout_lines|default([]))
failed_when: outputs|failed
when: outputs is defined
failed_when: outputs.rc != 0
when: outputs.rc is defined
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