How to pass stdout of a variable belonging to different Ansible play ?

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1

How to pass “stdout” of a variable “command_result” belonging to Ansible Play-1 to shell module of a different Play-2?

My playbook looks like below:

`

  • name: Play 1
    hosts: localhost
    tasks:

  • name: “Collect Output”
    command: ls -ltr *
    register: command_result

  • name: Play 2
    hosts: remotehost
    tasks:

  • shell: “~/rollback.sh {{ Number }} ‘{{ InstallDir }}’ ‘{{ hostvars["localhost"]["command_result"].results|map(attribute=/‘stdout/’)|list }}’ > ~/rollback.log”

`

I get runtime error executing shell which is of the nature below:

fatal: [10.12.34.43]: FAILED! => {“msg”: “template error while templating string: unexpected ‘/’. String: ~/rollback.sh {{ Number }} ‘{{ InstallDir }}’ ‘{{ hostvars["localhost"]["command_result"].results|map(attribute=/‘stdout/’)|list }}’ > ~/rollback.log”}

I tried several tweaks but not sure how to get this to work ?

2

How to pass "stdout" of a variable "command_result" belonging to Ansible
Play-1 to shell module of a different Play-2?

My playbook looks like below:

- name: Play 1
  hosts: localhost
  tasks:
   - name: "Collect Output"
     command: ls -ltr *
     register: command_result

     - set_fact:
         command_result: "{{ command_result }}"

- name: Play 2
  hosts: remotehost
  tasks:
   - shell: "~/rollback.sh {{ Number }} '{{ InstallDir }}' '{{
hostvars[\"localhost\"][\"command_result\"].results|map(attribute=/'stdout/')|list
}}' > ~/rollback.log"

Make the scope of "command_result" playbook-wide with "set_fact". Registered
variables belong to the host which is running the play. i.e. "localhost" in
your case. The second play runs "remotehost" who know nothing about varaibles
registered by "localhost".

Cheers,

  -vlado

3

The problem is the string is shell. Try to create the parameters first. For
example

  - set_fact:
      my_list: "{{ hostvars['localhost'].command_result.results|
                   map(attribute='stdout')|list }}"

  - shell: "~/rollback.sh {{ Number }} '{{ InstallDir }}' '{{ my_list }}' > ~/rollback.log"

4

I tried the set_fact suggestion but seems I need more help / understanding.

Below is the error i get:

FAILED! => {“msg”: "The task includes an option with an undefined variable. The error was: ‘command_result’ is undefined\n\nThe error appears to be in ‘/app/rollback.yml’: line 88, column 6, but may\nbe elsewhere in the file depending on the exact syntax problem.

Below is my updated playbook:

`

  • name: Play 1
    hosts: localhost
    tasks:

  • name: “Collect Output”
    command: ls -ltr *
    register: command_result

  • set_fact:
    command_result: “{{ command_result }}”

  • name: Play 2
    hosts: remotehost
    tasks:

  • shell: “~/rollback.sh {{ Number }} ‘{{ InstallDir }}’ ‘{{ command_result.stdout }}’ > ~/rollback.log”

`

5

The solution given with “my_list” is complaining of the below error:

FAILED! => {“msg”: "The task includes an option with an undefined variable. The error was: ‘dict object’ has no attribute ‘results’\n\nThe error appears to be in

Guess we need to relook at this proposed code snippet:

my_list: "{{ hostvars['localhost'].command_result.results|map(attribute='stdout')|list }}"

Something is still wrong.

6

[SOLVED]

The playbook below

- hosts: localhost
  tasks:
    - set_fact:
        Number: '42'
    - set_fact:
        InstallDir: '/usr/local'
    - name: 'Collect Output'
      command: "sh -c 'ls -1 /scratch/tmp/*.db'"
      register: result

- hosts: test_01
  tasks:
    - set_fact:
        My_list: "{{ hostvars['localhost'].result.stdout_lines|join(',') }}"
    - set_fact:
        Number: "{{ hostvars['localhost'].Number }}"
    - set_fact:
        InstallDir: "{{ hostvars['localhost'].InstallDir }}"
    - shell: "/root/rollback.sh {{ Number }}
                                {{ InstallDir }}
                                {{ My_list }} > /root/rollback.log"
...

With the script

      root@test_01:~ # cat /root/rollback.sh
      #!/usr/local/bin/bash
      echo $1
      echo $2
      echo $3

gives

      root@test_01:~ # cat /root/rollback.log
      42
      /usr/local
      /scratch/tmp/test1.db,/scratch/tmp/test2.db,/scratch/tmp/test3.db