rescue block does not print message despite being invoked

[Shifa Shaikh]

Hi, 

I have a playbook with a task that greps for a string in a file. If the string is found the block should fail which is the case. However, in the fail module it fails to print the message. 

Here is my playbook:

Here is my playbook:

---
- name: "Play 1"
  hosts: localhost
  tasks:
   - block:
      - name: "Search for IP"
        command: "grep -w {{ source_host }} {{ playbook_dir }}/allhost.hosts"
        register: command_result
        failed_when: command_result.rc == 0 and action == "onboard"


     rescue:
      - name: Print custom conditional debug message
        fail:
          msg: >-
            {{
              command_result.rc == 0 |
              ternary(
                "This IP is already On-Boarded.",
                "The Database is not reachable."
              )
            }}

Considering command_result.rc = 0; I was expecting "This IP is already On-Boarded." to be printed however it does not. Can you please tell me why.

Output:

TASK [Search for IP] *****************************
[1;30mtask path: /tmp/filegaurd.yml:20[0m
[0;34mUsing module file /usr/lib/python2.7/site-packages/ansible/modules/commands/command.py[0m
[0;34mPipelining is enabled.[0m
[0;34m<127.0.0.1> ESTABLISH LOCAL CONNECTION FOR USER: user1[0m
[0;34m<127.0.0.1> EXEC /bin/sh -c '/usr/bin/python2 && sleep 0'[0m
[0;31mfatal: [localhost]: FAILED! => {[0m
[0;31m    "changed": true, [0m
[0;31m    "cmd": [[0m
[0;31m        "grep", [0m
[0;31m        "-w", [0m
[0;31m        "10.9.9.91", [0m
[0;31m        "/tmp/allhost.hosts"[0m
[0;31m    ], [0m
[0;31m    "delta": "0:00:00.096103", [0m
[0;31m    "end": "2020-03-13 07:25:43.705938", [0m
[0;31m    "failed_when_result": true, [0m
[0;31m    "invocation": {[0m
[0;31m        "module_args": {[0m
[0;31m            "_raw_params": "grep -w 10.9.9.91 /tmp/allhost.hosts", [0m
[0;31m            "_uses_shell": false, [0m
[0;31m            "argv": null, [0m
[0;31m            "chdir": null, [0m
[0;31m            "creates": null, [0m
[0;31m            "executable": null, [0m
[0;31m            "removes": null, [0m
[0;31m            "stdin": null, [0m
[0;31m            "stdin_add_newline": true, [0m
[0;31m            "strip_empty_ends": true, [0m
[0;31m            "warn": true[0m
[0;31m        }[0m
[0;31m    }, [0m
[0;31m    "rc": 0, [0m
[0;31m    "start": "2020-03-13 07:25:43.609835", [0m
[0;31m    "stderr": "", [0m
[0;31m    "stderr_lines": [], [0m
[0;31m    "stdout": "10.9.9.91 USERID=user1 files_list=/tmp/winstone4603745991442278706.jar,/tmp/winstone5835113081224811756.jar", [0m
[0;31m    "stdout_lines": [[0m
[0;31m        "10.9.9.91 USERID=user1 files_list=/tmp/winstone4603745991442278706.jar,/tmp/winstone5835113081224811756.jar"[0m
[0;31m    ][0m
[0;31m}[0m


TASK [Print custom conditional debug message] **********************************
[1;30mtask path: /tmp/filegaurd.yml:28[0m
[0;31mfatal: [localhost]: FAILED! => {[0m
[0;31m    "changed": false, [0m
[0;31m    "msg": "False "[0m
[0;31m}[0m


PLAY RECAP *********************************************************************
[0;31mlocalhost[0m                  : [0;32mok=1   [0m changed=0    unreachable=0    [0;31mfailed=1   [0m skipped=0    [0;32mrescued=1   [0m ignored=0  

[James Cassell]

On Thu, Mar 12, 2020, at 10:12 PM, Shifa Shaikh wrote:
> Hi,
>
> I have a playbook with a task that greps for a string in a file. If the
> string is found the block should fail which is the case. However, in
> the fail module it fails to print the message.
>
> Here is my playbook:
>
> Here is my playbook:
>
> `
> ---
> - name: "Play 1"
> hosts: localhost
> tasks:
> - block:
> - name: "Search for IP"
> command: "grep -w {{ source_host }} {{ playbook_dir }}/allhost.hosts"
> register: command_result
> failed_when: command_result.rc == 0 and action == "onboard"
>
>
> rescue:
> - name: Print custom conditional debug message
> fail:
> msg: >-
> {{
> command_result.rc == 0 |

You're missing parenthesis around the condition.

V/r,
James Cassell

> `
>

[Shifa Shaikh]

Missing parentheses where?

My code is very similar to a working sample here:

          fail:

            msg: >-

              {{

                command_result.stdout is search('775') |

                ternary(

                  "This REQ is already Deployed. ,

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[Dick Visser]

On Fri, 13 Mar 2020 at 04:19, Shifa Shaikh <shif...@gmail.com> wrote:

Missing parentheses where?

Right above the answer 

--

Sent from a mobile device - please excuse the brevity, spelling and punctuation.

[Vladimir Botka]

On Thu, 12 Mar 2020 19:12:56 -0700 (PDT)
Shifa Shaikh <shif...@gmail.com> wrote:

> - name: Print custom conditional debug message
> fail:
> msg: >-
> {{
> command_result.rc == 0 |
> ternary(
> "This IP is already On-Boarded.",
> "The Database is not reachable."
> )
> }}
>
> Considering command_result.rc = 0; I was expecting "This IP is already
> On-Boarded." to be printed however it does not. Can you please tell me why.

> [...]

> TASK [Print custom conditional debug message]
> **********************************
> [1;30mtask path: /tmp/filegaurd.yml:28[0m
> [0;31mfatal: [localhost]: FAILED! => {[0m
> [0;31m "changed": false, [0m
> [0;31m "msg": "False "[0m
> [0;31m}[0m

Close the comparison into the parenthesis

(command_result.rc == 0) |

The filter "|" has higher precedence compared to the comparison "==". Without
the parenthesis the filter is evaluated first and ternary returns "The
Database is not reachable.". This string is compared to command_result.rc and
the result is "msg": "False"

HTH,

-vlado