Resolve nested variable in template

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1

Hi

I want to generate the variable names based on another variable value. Something like this:

Vars:
environements: [“trunk”, “dev01”]
my_trunk_port: 8080
my_dev01_port: 8180

Template:
{{ my_{{ env }}_port }}

2

I’ve been using this pattern:

vars:
environments: [ “trunk”, “dev01” ]
my_ports:
trunk: 8080
dev01: 8081

template:
{{ my_ports[env] }}

-dave

3

Hi

Thx for the answer. But this is not a option here. The vars is already defined in this format:

my_trunk_port: 8080
my_dev01_port: 8180

my_dev02_port: 8280

my_dev03_port: 8480

and then I have an env var [trunk, dev01, dev02…] to construct the final var name

4

​try something like this:
​
{{ ​hostvars[inventory_hostname][ "my_" + ​env + "_port"] }}

if I'm not mistaken..

5

vars:
  port_vars:
   my_trunk_port: 8080
   my_dev01_port: 8180
   my_dev02_port: 8280
   my_dev03_port: 8480

- set_fact:
    my_ports: {}

- pause: seconds=0
   when: (my_ports[item[0].substring(3).substring(0,len(item[0]) - 3)] = item[1]) and false or false
   with_items: port_vars.items()

- debug: msg="{{ my_ports['trunk'] }}"

6

Hmm, much better than my convoluted example.

7

Hi

I have added my vars via include_vars and not in hostvars

  • include_vars: /path/myvars.yml

  • template: src=input.j2 dest=output.j2

so {{ ​hostvars[inventory_hostname][ “my_” + ​env + “_port”] }} will not working

What will the name of the array then be?

8

It was a typo error from my side. The solution is working fine. Thx a lot