Ansible. Fast way to check syntax?

Question

Is there a way to check playbook syntax and variables?

I'm trying to dry-run(--check) but for some reasons it works really slow. It looks like it tries to perform an action instead of just check the syntax

I want to omit en errors like this:

..."msg": "AnsibleUndefinedVariable: ERROR! 'application_name' is undefined"} 

Answer 1

This is expected behaviour according to the documentation:

When ansible-playbook is executed with --check it will not make any changes on remote systems. Instead, any module instrumented to support ‘check mode’ (which contains most of the primary core modules, but it is not required that all modules do this) will report what changes they would have made rather than making them. Other modules that do not support check mode will also take no action, but just will not report what changes they might have made.

http://docs.ansible.com/ansible/playbooks_checkmode.html

If you would like to check the YAML syntax you can use syntax-check.

ansible-playbook rds_prod.yml  --syntax-check playbook: rds_prod.yml