Variables inside variables?

Archives Ansible Project
1

Hi, I like to know if possible made reference of a variable inside other variable.

Example:

{{ansible_local.oracle.credentials.“{{websphere_mb.odbc.schema_name}}”}}

with this I try to build the final variable name that if I put manually works, but like to don’t hardcode Schame_name and read from vars file.

this can be possible?

Thanks
Ale

2

no moustache stacking

{{ansible_local.oracle.credentials[{{websphere_mb.odbc.schema_name]}}

3

Thanks Brian,

THis is how work for me.

{{ansible_local.oracle.credentials[websphere_mb.odbc.schema_name]}}

And ansible_local really come from other node that I ask using

  • name: Get sql master facts
    setup:
    delegate_to: “{{websphere_mb.odbc.host}}”
    register: db_facts
    tags: mbconfig

Some better way to do this?

THanks
Ale

4

Ale/Brian

I’m trying to use variables in variables as well…not sure how to do it. I’m using set facts

Below is the when condition:

hardcoded:

when: “‘{{ hostvars[groups[‘app-a1’][0]][‘target_app_build’] }}’ != ‘{{ hostvars[groups[‘app-a1’][0]][‘actual_app_build’] }}’”

what I need:

when: “‘{{ hostvars[groups[‘app-a1’][{{ partition }}]][‘target_app_build’] }}’ != ‘{{ hostvars[groups[‘app-’][{{ partition }}]][‘actual_app_build’] }}’”

Here {{ partition }} - is an extra variable

It doesn’t seem to be working for me.

Thanks,
Virendra

5

same rule no nesting of moustaches:

when: "{{ hostvars[groups['app-a1'][partition]]['target_app_build']
!= hostvars[groups['app-'][partition]]['actual_app_build']}}"

6

If there is no moustache stacking does that mean variables inside variables is impossible?

I.e.

environments:
prod:
vpc_id: 12345
stg:
vpc_id: 67890
env: prod

debug: msg={{ ‘environments.’ + env + ‘.vpc_id’ }}

This just gives me a string of ‘environments.prod.vpc_id’ but what I want is ‘12345’

7

I’m completely new to all this, but looking at http://jinja.pocoo.org/docs/dev/templates/#variables

I’d try to do it like this:

`

environments:
prod:
vpc_id: 12345
stg:
vpc_id: 67890
env: prod

debug: msg={{ environments[env].vpc_id }}

`