is it possible to append a variable list to a static list in ansible?
I can define the whole list as a variable:
my_list: - 1 - 2 - 3
and then use it in a playbook as
something: {{my_list}}
But I cannot seem to find how to do this (pseudo code):
list_to_append: - 3 - 4
and then in the playbook:
something: - 1 - 2 - {{append: list_to_append}}
If that is in fact impossible, what would you suggest for my use case?
I have a list of items in a parameter, but some of them are optional
and should be modifiable using variables.
In other words: I have default values
+ optional values
that could or could not be added via variables.
The optional values
are not known in advance, I could add 1, 2 or 100 of them, so they are not static.
I basically have a default static list ++ a configurable variable list to append.
edit: I found this but it's only for with_items and I need it in a normal parameter:
with_flattened: - "{{list1}}" - "{{list2}}"
If you really want to append to content, you will need to use the set_fact
module. But if you just want to use the merged lists it is as easy as this:
{{ list1 + list2 }}
With set_fact
it would look like this:
- set_fact: list_merged: "{{ list1 + list2 }}"
NOTE: If you need to do additional operations on the concatenated lists be sure to group them like so:
- set_fact: list_merged: "{{ (list1 + list2) | ... }}"
The following worked for me with Ansible 2.1.2.0:
- name: Define list of mappings set_facts: something: - name: bla mode: 1 - name: Append list with additional mapping set_facts: something: "{{ something + [{'name': 'blabla', 'mode': 1}] }}"
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