Lets say you have a service that needs to be configured, and that service has optional configuration files - if the configuration file is there, then it is used, if not then not.
How would you configure such a service with ansible?
A line like the following
copy: src=files/optional.config dest=/etc/service/optional.config
will lead to ansible aborting with an error if you do not need and therefore do not provide the files/optional.config in your local configuration.
If you add a:
then ansible will happily continue, even if you locally did provide the files/optional.config config file but there was some problem, as f.ex. insufficient write permissions on the target machine.
Here’s a possible solution:
- name: check wheter we want to copy the optional config file local_action: stat path=/files/optional.config register: optional_config - name: upload optional config copy: src=files/optional.config dest=/etc/service/optional.config when: optional_config.stat.exists