Apologies if this is a FAQ, but I haven't found been able to find it
anywhere.
I keep wanting a pattern where something happens if a variable is true and
something positively doesn't happen if the variable is false (or unset).
For example having a service running or not running. Is there any way to
achieve this other than having pairs of tasks with inverted when clauses?
e.g:
- name: be sure openais is running and enabled
service: name=openais state=running enabled=yes
when: enable_service_address is defined and enable_service_address
- name: be sure openais is NOT running and NOT enabled
service: name=openais state=stopped enabled=no
when: enable_service_address is not defined or not enable_service_address
Or, as an other example, creating or removing a marker file (which seems
to be further complicated by needing 'copy' for create and 'file' for
remove):
- name: Set standalone marker file
copy: content='' dest=/var/role-standalone
when: '"standalone" in group_names'
- name: Unset standalone marker file
file: path=/var/role-standalone state=absent
when: '"standalone" not in group_names'
Jon.
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Jon Warbrick
Information Systems Manager, University of Cambridge Information Services
