Loops in Variable Files

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1

Hi,

I’m wishing to use various Roles from Galaxy, and they often require configuration via variables.

My question is: is it possible to dynamically build these files?

For instance, let’s say I want to configure a few backend servers for HAProxy. The variables typically look like this:

`
haproxy_backends:

  • name: ‘be-mysupersite’
    description: ‘mysupersite is really cool’
    servers:
  • name: “be-mysupersite-01”
    ip: “123.123.123.124”
    port: 8080
  • name: “be-mysupersite-02”
    ip: “123.123.123.125”
    port: 8080
  • name: “be-mysupersite-03”
    ip: “123.123.123.126”
    port: 8080
    `

What I’m hoping to do is build this with loops, for example, something like this:

`

haproxy_backends:

  • name: ‘be-mysupersite’
    description: ‘mysupersite is really cool’
    servers:

  • name: “{{ item.name }}”
    ip: “{{ item.ip }}”
    port: 8080
    with_items:

  • { name: ‘be-mysupersite-01’, ip: ‘123.123.123.124’ }

  • { name: ‘be-mysupersite-02’, ip: ‘123.123.123.125’ }

  • { name: ‘be-mysupersite-03’, ip: ‘123.123.123.126’ }

`

The config file ends up with something like {# item.name #} instead of the actual name.

Can anybody point me in the right direction?

Much appreciated,

Kelvin

2

var files do not handle ansible directives, but yaml allows for some references

_default_server:

haproxy_backends:
  - name: 'be-mysupersite'
    description: 'mysupersite is really cool'
    servers:
      - name: "be-mysupersite-01"
        ip: "123.123.123.124"
        port: 8080
      - name: "be-mysupersite-02"
        ip: "123.123.123.125"
        port: 8080
      - name: "be-mysupersite-03"
        ip: "123.123.123.126"
        port: 8080