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Ansible with_items is a keyword which you will use in playbook and provide a list of items under it. These are some scenarios when you have a simple list, an item is list is also a list, each item in list is a combination of few variables. Let us see how its syntax will look: 1. A simple list will be like below and used in a task as follows.

The examples make use of the builtin set_fact module. How to run demonstration. ansible-playbook demo-append-list.yml. or (if the file is ...

changeable, indexed and unordered. the difference between a list(array) and a ...

I want to create a new list through a loop. I created a task like this. Ansible 2.9.10 - name: "Generate list" set_fact: dst: "{{dst_list | default([])}} + [ '{{ item ...

21.09.2017 · In this blog post I'll show how to add items to lists and dictionaries, when using loops, and across tasks. Normally when trying to add a new item to the variable, while in the loop, or between tasks, Ansible will ovewrite the values, keeping the result of the last iteration.

- name: Build a list of all the security group names. set_fact: ec2_security_group_names: "{{ ec2_security_group_names }} + [ '{{ item.

You can merge two lists in a variable with + . Say you have a group_vars file with this content: --- # group_vars/all pgsql_extensions: - ext1 - ext2 - ext3.

21.12.2021 · Loops and list comprehensions . Most programming languages have loops (for, while, and so on) and list comprehensions to do transformations on lists including lists of objects.Jinja2 has a few filters that provide this functionality: map, select, reject, selectattr, rejectattr. map: this is a basic for loop that just allows you to change every item in a list, using the ‘attribute’ keyword ...

31.12.2017 · Ansible filters and lists operators. Ansible provides a rich set of filters, which you can apply to your variables. Recently, I needed to filter and map a list of host interfaces. I couldn’t remind myself how to do this, so I jumped to ansible filters docs.

Is this what you're looking for? vars: info: [ 'a', 'b', 'c' ] tasks: - set_fact: payload: "{{ payload|default([]) + [ 'delete ' ~ item ] ...

Oct 20, 2016 · - name: Initialize an empty list for our strings set_fact: my_strings: [] - name: Setup a string variable set_fact: my_name: "Max" - name: Append string to list set_fact: my_strings: "{{ my_strings + [ my_name ] }}" - debug: var=my_strings - name: Append another item to the list set_fact: my_strings: "{{ my_strings + [ 'Power' ] }}" - debug: var=my_strings

this lookup returns a list of items given to it, if any of the top level items ... item: {{ item }}" with_items: - 1 - 2 - 3 - name: add several users user: ...

26.04.2015 · Show 2 more comments. This answer is useful. 46. This answer is not useful. Show activity on this post. Since Ansible v2.x you can do these: # use case I: appending to LIST variable: - name: my appender set_fact: my_list_var: ' { {my_list_myvar + new_items_list}}' # use case II: appending to LIST variable one by one: - name: my appender set ...

If you want to append to a list, you need to use the name of the variable you're setting with set_fact inside the set_fact expression, like this: set_fact: dst: " { { dst|default ( []) + [ item [0] ] }}" Note that we only need one set of { {...}} markers here.

Since I have found the Ansible documentation to be lacking, ... Appending a single item to a list is trickier, especially when it's a string ...

Sep 21, 2017 · To make Ansible append to the list, instead of ovewriting the last value, we'll make a few modification. We will initiate "devices" var, assigning an empty list to it. We will also change the assignment expression to make Ansible append to this variable. Our playbook after modifications:

Dec 21, 2021 · Data manipulation . In many cases, you need to do some complex operation with your variables, while Ansible is not recommended as a data processing/manipulation tool, you can use the existing Jinja2 templating in conjunction with the many added Ansible filters, lookups and tests to do some very complex transformations.

Solution 1: Since Ansible v2.x you can do these: # use case I: appending to LIST variable: - name: my appender set_fact: my_list_var: ' { {my_list_myvar + new_items_list}}' # use case II: appending to LIST variable one by one: - name: my appender set_fact: my_list_var: ' { {my_list_var + [item]}}' with_items: ' { {my_new_items|list}}' # use case III: appending more keys DICT variable in a "batch": - name: my appender set_fact: my_dict_var: ' { {my_dict_var|combine ...

This will result in the item being an integer, not a string. - name: Append 'items' to the 'fruit' array set_fact: fruit: "{{ fruit }} + [ {{ ...

16.06.2017 · Adding strings to an array in Ansible. From time to time, I need to dynamically build a list of strings (or a list of other things) using Ansible's set_fact module. Since set_fact is a module like any other, you can use a with_items loop to loop over an existing list, and pull out a value from that list to add to another list.

Solution 1: Since Ansible v2.x you can do these: # use case I: appending to LIST variable: - name: my appender set_fact: my_list_var: '{{my_list_myvar + new_items ...

20.10.2016 · Since I have found the Ansible documentation to be lacking, and StackOverflow insufficient in this matter, I feel the need to share how you can append to a list using Ansible. I'

Normally when trying to add a new item to the variable, while in the loop, or between tasks, Ansible will ovewrite the values, keeping the ...