Learning systemd and how to manage it with ansible

ansible-systemd-test.yml

# Use with Vagrantfile liks this:
#
# # -*- mode: ruby -*-
# # vi: set ft=ruby :
#
# Vagrant.configure("2") do |config|
#   config.vm.box = "ubuntu/xenial64"
#   config.vm.provision "ansible" do |ans|
#     ans.playbook = "ansible-systemd-test.yml"
#   end
# end

- name: Bootstrap python if missing (required by Ansible to work)
  hosts: all
  gather_facts: False
  become: yes
  tags: sudo
  tasks:
    - name: install python2
      raw: >
        test -e /usr/bin/python ||
        (apt-get -y update && apt-get install -y python-minimal)


- hosts: all
  become: yes
  tasks:

    - name: install useful admin packages
      apt:
        name: "{{ item }}"
      loop:
        - tree

    - name: template script
      copy:
        content: |
          #!/bin/bash

          while true; do
              ls /vagrant
              echo "-----------"
              echo `date` >> /root/omg.log
              sleep 10
          done
        dest: /root/spammer.sh
        mode: 0755

    - name: template service unit
      copy:
        content: |
          [Unit]
          Description = Spamming service
          After = network.target

          [Service]
          WorkingDirectory = /vagrant
          ExecStart = /root/spammer.sh

          [Install]
          WantedBy = multi-user.target
        dest: /etc/systemd/system/foo.service

    - name: template path unit
      copy:
        content: |
          [Unit]
          Description=Monitor a path for foo.service

          [Path]
          PathExists=/vagrant

          [Install]
          WantedBy=multi-user.target
        dest: /etc/systemd/system/foo.path

    - name: manage foo.service unit
      systemd:
        name: foo.service
        state: started
        daemon_reload: yes
        enabled: no

    - name: manage foo.path unit
      systemd:
        name: foo.path
        state: started
        daemon_reload: yes
        enabled: yes