Question:
is it possible to append a variable list to a static list in ansible?
I can define the whole list as a variable:
|
1 2 3 4 5 |
my_list: - 1 - 2 - 3 |
and then use it in a playbook as
|
1 2 |
something: {{my_list}} |
But I cannot seem to find how to do this (pseudo code):
|
1 2 3 4 |
list_to_append: - 3 - 4 |
and then in the playbook:
|
1 2 3 4 5 |
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.
I found this but it’s only for with_items and I need it in a normal parameter:
|
1 2 3 4 |
with_flattened: - "{{list1}}" - "{{list2}}" |
Answer:
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:
|
1 2 |
{{ list1 + list2 }} |
With
set_fact it would look like this:|
1 2 3 |
- 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:
|
1 2 3 |
- set_fact: list_merged: "{{ (list1 + list2) | ... }}" |