This may not directly answer your question, but this how I am handling that
same issue. We have definitions of packages and rpms defined in group_vars
and host_vars:
# inventory/dse/group_vars/dse/package_versions.yml
package_versions:
app:
app: 4.6.1
jre: jre-1.7.0_75-fcs.x86_64
Then as part of the role of "app" we check if the packages are already
installed:
# roles/datastax_enterprise/tasks/main.yml
- name: Lookup installed jre version
shell: rpm -q jre || true
register: installed_jre_version
ignore_errors: true
changed_when: installed_jre_version.stdout != package_versions.app.jre
- name: Install jre rpm
yum: pkg={{ path_to_rpm }}/{{ package_versions.app.jre }} state=present
sudo: yes
when: installed_jre_version | changed
So "installed_jre_version | changed" is True only when jre doesn't match
our version (not installed or earlier version). You can take the same
action as my "Lookup installed jre version" to register a variable based on
the output of "1" or of a different play that double-checks "1" and then
run "2" based on that variable.
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