Check if service exists with Ansible

Question:

I have an Ansible playbook for deploying a Java app as an init.d daemon.

Being a beginner in both Ansible and Linux I’m having trouble to conditionally execute tasks on a host based on the host’s status.

Namely I have some hosts having the service already present and running where I want to stop it before doing anything else. And then there might be new hosts, which don’t have the service yet. So I can’t simply use service: name={{service_name}} state=stopped, because this will fail on new hosts.

How I can I achieve this? Here’s what I have so far:

Answer:

Of course I could also just check if the wrapper script exists in /etc/init.d. So this is what I ended up with:

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