CODEWITHSUNDEEP
ansible
Michael Hoeller
Michael Hoeller

Reputation: 24298

How to validate variables from command line parameters in Ansible?

I have a playbook which I execute with:

ansible-playbook -i inventories/staging/ myPlaybook.yml  -e "srv_mode=restart"

The variable srv_mode is used in a play. Now I only want to allow "restart" and "start" as its values.

Is there a possibility to evaluate the content of srv_mode at first and to end gracefully with a nice warning in case the value is not supported?

Upvotes: 0

Views: 1184

Answers (1)

techraf
techraf

Reputation: 68559

Use assert module, optimally in a separate play at the top of your playbook:

- hosts: localhost
  connection: local
  gather_facts: false
  pre_tasks:
    - assert:
        that: srv_mode in ['start', 'restart']

Upvotes: 5

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