Question:
What’s the sane way run a task only if the host belongs to one or more groups?
Currently, I’m using a boolean within the relevant group, e.g.:
Inventory file
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[db_servers:vars] copy_connection_string=true |
Task
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- name: Copy db connection string file synchronize: src= ... (truncated for clarity) when: copy_connection_string is defined |
What’s the right condition in the when clause to check whether the current host belongs to the db_servers group?
Answer:
Run task when a host server is a member of a specific group
Ansible contains special or magic variables – one of the most common is group_names which is a list (array) of all the groups the current host is in.
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- name: Copy db connection string file synchronize:......... when: "'db_servers' in group_names" |
The above Ansible task will only run if the host is a member of the db_servers group.