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

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1

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

2

​
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.

3

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

4

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.

5

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

6

Thx Marc,

Good job, but I did not really want to change ansible sources :confused:
Rather adapt my code and I hope Ansible integrates this kind of operation afterwards : p

7

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