create and run systemd and upstart service file

.gitignore

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+*.retry
+*.pyc
+__PYCACHE__
+

nginx+php-fpm7.1/deploy.retry

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-10.0.2.46

systemd-and-upstart/inventory.ini

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+[upstart:children]
+upstart-desktops
+upstart-servers
+
+[upstart-desktops]
+desk1204 ansible_host=10.9.0.50 ansible_user=vlad ansible_password=123 ansible_sudo_password=123
+desk1404 ansible_host=10.9.0.51 ansible_user=vlad ansible_password=123 ansible_sudo_password=123
+
+[upstart-servers]
+serv1204 ansible_host=10.9.0.48 ansible_user=vlad ansible_password=123 ansible_sudo_password=123
+serv1404 ansible_host=10.9.0.49 ansible_user=vlad ansible_password=123 ansible_sudo_password=123
+
+[systemd:children]
+systemd-desktops
+
+[systemd-desktops]
+desk1804 ansible_host=10.9.0.155 ansible_user=vlad ansible_password=123 ansible_sudo_password=123

systemd-and-upstart/roles/preinstall/tasks/main.yml

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+---
+- name: Minimum packages for Debian-like
+  apt: name="{{ item }}" state=present update_cache=yes
+  become: yes
+  become_method: sudo
+  with_items:
+    - python
+    - mc
+    - htop
+  when: preinstall is defined

systemd-and-upstart/roles/set_service/files/app.py

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+import time
+import multiprocessing
+import child_process
+
+
+print("Hello world")
+
+processes = [None] * 4
+for i in range(4):
+    processes[i] = multiprocessing.Process(target=child_process.run, args=(i,))
+    processes[i].start()
+for i in range(4):
+    processes[i].join()

systemd-and-upstart/roles/set_service/files/child_process.py

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+import time
+import multiprocessing
+
+def test(info):
+    while 1:
+	print 'TEST', info[0], info[1]
+
+def run(proc_id):
+    pool = multiprocessing.Pool(processes=4)
+    pool.map(test, [(proc_id, i) for i in range(4)])
+    pool.close()
+    pool.join()

systemd-and-upstart/roles/set_service/tasks/main.yml

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+---
+- name: Install app.py
+  copy:
+    src: files/app.py
+    dest: /opt/app.py
+    owner: root
+    group: root
+    mode: 0644
+
+- name: Install child_process.py
+  copy:
+    src: files/child_process.py
+    dest: /opt/child_process.py
+    owner: root
+    group: root
+    mode: 0644
+
+- name: Create service file for upstart Ubuntu versions
+  template: src=upstart-service.template.j2 dest=/etc/init/{{service_name}}.conf backup=no mode=0644
+  when: ansible_distribution == 'Ubuntu' and (ansible_distribution_version == "14.04" or ansible_distribution_version == "12.04")
+
+- name: Create service file for systemd Ubuntu versions
+  template: src=systemd-service.template.j2 dest=/etc/systemd/system/{{service_name}}.service backup=no mode=0644
+  when: ansible_distribution == 'Ubuntu' and (ansible_distribution_version == "16.04" or ansible_distribution_version == "18.04")
+
+- name: Enable service {{ service_name }}
+  service: name={{ service_name }} enabled=yes
+
+- name: Start service {{ service_name }}
+  service: name={{ service_name }} state=restarted

systemd-and-upstart/roles/set_service/templates/systemd-service.template.j2

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+[Unit]
+Description={{service_description}}
+Requires=network.target
+After=syslog.target network.target
+TimeoutStopSpec=60
+[Service]
+Type=simple
+ExecStart={{interpretator}} {{installation_path}}/app.py
+ExecReload=/bin/kill -HUP $MAINPID
+WorkingDirectory={{installation_path}}
+User=vlad
+Restart=always
+RestartSec=30
+[Install]
+WantedBy=multi-user.target

systemd-and-upstart/roles/set_service/templates/upstart-service.template.j2

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+description "{{ service_description }}"
+
+start on runlevel [2345]
+stop on runlevel [!2345]
+
+expect fork
+kill timeout 60 # when upstart issued a stop, send SIGTERM, wait 60 sec before sending SIGKILL
+
+respawn
+respawn limit 5 30 #try 5 times within 60 seconds, or giveup
+
+script
+    echo $$ > {{installation_path}}/app.pid
+    exec {{ interpretator }} {{ installation_path}}/app.py
+end script
+
+pre-start script
+    touch {{installation_path}}/app.log
+    echo "\n[`date -u +%Y-%m-%dT%T.%3NZ`] (sys) Starting" >> {{installation_path}}/app.log
+end script
+
+pre-stop script
+    rm -f {{installation_path}}/app.pid
+    echo "[`date -u +%Y-%m-%dT%T.%3NZ`] (sys) Stopping" >> {{installation_path}}/app.log
+end script

systemd-and-upstart/roles/set_service/vars/main.yml

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+service_name: app
+service_description: my app.py
+installation_path: /opt
+interpretator: /usr/bin/python

systemd-and-upstart/roles/test/tasks/main.yml

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+---
+- name: test
+  debug:
+    msg: "OS Version: {{ansible_distribution }} {{ansible_distribution_release}} {{ansible_distribution_version}}"

systemd-and-upstart/services.yml

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+- hosts: all
+  roles:
+    - test
+    - preinstall
+    - { role: set_service, become: yes }
+