Use "with_sublelements" with 3,4,5,... elements ?

[Clément VALENTIN]

Hi, 

I try to use function "with_subelements" to create a folder tree for MySQL installation with multiple element in vars, but I can't do this ...

Exemple :

vars.yml :

mysqld_instance:
  - name: "HOSTNAME"
    port:
      - '3307'
    user:                 'mysql'
    mysql_data_path:      '/opt/mysql'
    mysql_data_tree:
      - { file: 'run', mode: '755' }
      - { file: 'var', mode: '755' }
      - { file: 'var/log', mode: '755' }
      - { file: 'var/data', mode: '755' }
      - { file: 'var/tmp', mode: '755' }
      - { file: 'var/iblogs', mode: '755' }
      - { file: 'var/ibdata', mode: '755' }

task.yml : 

- name: "Create MySQL Tree"
  file:
    path: "{{ item.0.mysql_data_path }}/{{ item.1 }}/{{ item.2.file }}"
    owner: "{{ item.0.user }}"
    group: "{{ item.0.user }}"
    mode: "{{ item.1.mode }}"
    state: directory
  with_subelements:
    - "{{ mysqld_instance }}"
    - port
    - mysql_data_tree

Output : 

fatal: [XXXXXXXXXXXXXXXXXXXX]: FAILED! => {"failed": true, "msg": "subelements lookup expects a list of two or three items, the optional third item must be a dict with flags skip_missing"}

Someone would tell me how to do this?

Thx

[Serge van Ginderachter]

​

You are trying to point to two (or more) lists. The module just doesn't work like that. You need to target only one list.

[Clément VALENTIN]

Arf, and do you have an idea of how I Could make this with other function/module ?

[Serge van Ginderachter]

On 11 May 2016 at 11:35, Clément VALENTIN <cle...@valent1.fr> wrote:

Arf, and do you have an idea of how I Could make this with other function/module ?

Unless you write your own lookup module, there is none.​

The ansible way right now would be to restructure your base data to make it work with the subelements module.

[Marc Petrivelli]

I hacked the subelement lookup plugin to accept an additional layer if list.  If you're interested take a look at https://gist.github.com/mpetrive/6c8dcd77968209b7660f3c4b965808ea 

[Clément VALENTIN]

Thx Marc,

Good job, but I did not really want to change ansible sources :/

Rather adapt my code and I hope Ansible integrates this kind of operation afterwards : p

[Serge van Ginderachter]

On 12 May 2016 at 09:32, Clément VALENTIN <cle...@valent1.fr> wrote:

Good job, but I did not really want to change ansible sources :/

​no need, just drop that plugin in lookup_plugins/ next to your playbooks​