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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 ...

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

From the ansible docs: If a required variable has not been set, you can skip or fail using Jinja2's defined test. For example:

When you run the task or playbook, Ansible evaluates the test for all hosts. ... You can also create conditionals based on variables defined in the ...

24.12.2020 · Checking if a Directory Exists in Ansible. Using Ansible to check if a directory exists is exactly the same as checking if a file exists. The only difference is that you use the isdir value to confirm the path to the specified directory: - name: Task name debug: msg: "The file or directory exists" when: register_name.stat.exists and register_name.stat.isdir

Check if a variable in Ansible playbook is defined (exists), empty or set to True or False. The 'when' statement and conditions in Ansible. www.

version is not defined? Following example does't work :( roles: - { role: test_roleversion, when: "module.version > ansible_local.

Playbook to Test When Variable is defined. We have created a simple playbook to demonstrate this by example, This ansible-playbook is designed ...

ansible when variable is defined this play requires 'bar'" when: bar is undefined. During Ansible playbook debugging it is useful to know how to display ...

Ansible gathers facts on the hosts in the webservers group, then interpolates the variable “ansible_facts[‘os_family’]” into a list of filenames. If you have hosts with Red Hat operating systems (CentOS, for example), Ansible looks for ‘vars/RedHat.yml’. If that file does not exist, Ansible attempts to load ‘vars/os_defaults.yml’.

The 'when' statement and conditions in Ansible. Check if Ansible variable is defined and not empty: tasks: - shell: echo "The variable 'foo' is defined and ...

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 ...

22.09.2014 · Basically, if you just need to access existing variables, use the ‘env’ lookup plugin. For example, to access the value of the HOME environment variable on management machine:`. Now, if you need to access it in the remote machine you can just run your ansible script locally in the remote machine. Or you could just the ansible facts variables.

11.09.2020 · The following ansible playbook is created strategically to explain the validation cases of ansible playbook variable is defined or not defined (undefined) along with “when” conditional module. Note*: VLOG of this post is now available at our Youtube channel. you can find the video at end of this post or go to our channel

Check if a variable in Ansible playbook is defined (exists), empty or set to True or False. The 'when' statement and conditions in Ansible.

# the magic variable mapping dictionary below is used to translate # host/inventory variables to fields in the PlayContext # object. The dictionary values are ...