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12.08.2019 · In Ansible playbooks, it is often a good practice to test if a variable exists and what is its value. Particularity this helps to avoid different “VARIABLE IS NOT DEFINED” errors in Ansible playbooks. In this context there are several useful tests that you can apply using Jinja2 filters in Ansible.. In this article, i’ll show the examples of how to test a variable in Ansible: if it ...

In Ansible 2.8 and later, you have the option of disabling conditional bare variables, so when: teardown always evaluates as True and when: not teardown always evaluates as False when teardown is a non-empty string (including 'true' or 'false')

Aug 22, 2020 · Ansible check if variable exists in attribute list. Ask Question Asked 1 year, 4 months ago. Active 1 year, 4 months ago. Viewed 13k times

There are presumably more elegant ways of doing it, but something like this works for me: If your inventory file looks like this

-name: check registered variable for emptiness hosts: all tasks:-name: List contents of directory ansible.builtin.command: ls mydir register: contents-name: Check contents for emptiness ansible.builtin.debug: msg: "Directory is empty" when: contents.stdout == ""

I've got a test play with a list of items called 'standard' and I'm trying ... you want to look for a string "one" in a variable standard , and put all of ...

Q: "Looking for a specific manufacturer prefix in each interface." A: The manufacture prefix is the first three octets. For example

Tests can also be used in list processing filters, like map() and select() to choose items ... Test syntax varies from filter syntax ( variable | filter ).

Ansible check if variable is a list. Ansible: Check if a variable contains a list or dictionary, Example: In the case of a dictionary, it is easy: --- - name ...

I want to compare two lists - one with all available options, ... Ansible - check if item is in the list. Ask Question Asked 2 years, 1 month ago. Active 8 months ago. Viewed 2k times ... To save to a variable use as below - name: test set_fact: test: "{{ item }} ...

Ansible supports lists and dictionaries, but deeply nested variables might become problematic. If your configuration is a dict , and you ...

08.04.2016 · Ansible: check if variable equals string. 64. Skip Ansible task when running in check mode? Hot Network Questions Who is the intermediary in Gal 3:19-20 What is "the line children draw to represent a bird in flight"? Why ...

Aug 12, 2019 · Ansible ‘When’ Statement: Check If Variable Is…. Check if Ansible variable is defined (exists): tasks: - shell: echo "The variable 'foo' is defined: ' { { foo }}'" when: foo is defined - fail: msg="The variable 'bar' is not defined" when: bar is undefined. Check if Ansible variable is empty:

21.08.2020 · Ansible check if variable exists in attribute list. Ask Question Asked 1 year, 4 months ago. Active 1 year, 4 months ago. Viewed 13k times 1 I have a variable containing details of host machines on my network (called 'hostlist' - I believe you call this a dictionary, but I'm not sure of the terminology. The variable is defined in ...

Check if variable matches any regex in a list. Close. 5. Posted by 22 days ago. ... Right now, I just write an Ansible task (and a few templates) that does each of the above steps using the uri module, and a badly coded var-compare step.

Facts are attributes of individual hosts, including IP address, operating system You can use registered results in the loop of a task if the variable is a list.

I'm trying to check if the version supplied is a valid supported version. I've set the list of acceptable versions in a variable, ...

This question may look strange as something like this is not implemented in real life. I have tried to make it very general. Here is my ansible-playbook: tasks/main.yml - name: "Setting place n...

Using Variables. Ansible uses variables to manage differences between systems. With Ansible, you can execute tasks and playbooks on multiple different systems with a single command. To represent the variations among those different systems, you can create variables with standard YAML syntax, including lists and dictionaries.

Dec 21, 2021 · Testing if a list value is True . You can use any and all to check if any or all elements in a list are true or not. vars: mylist: - 1 - " { { 3 == 3 }}" - True myotherlist: - False - True tasks: - debug: msg: "all are true!" when: mylist is all - debug: msg: "at least one is true" when: myotherlist is any.

Ansible - check if item is in the list. Ask Question ... And I have the second list with specific keys to select items from the full list. ... To save to a variable ...

I've set the list of acceptable versions in a variable, and I want to fail out of the task if the supplied version is not in the list. However, ...