change directory structure

ansible/roles/prometheus/meta/main.yml

@@ -0,0 +1,3 @@
+dependencies:
+  - role: common
+  - role: docker

ansible/roles/prometheus/tasks/main.yml

@@ -0,0 +1,19 @@
+- name: Create app directory
+  file:
+    path: "{{ service_dir }}"
+    state: directory
+- name: Copy Docker Compose script
+  template:
+    src: "{{ role_path }}/templates/docker-compose.yml.j2"
+    dest: "{{ service_dir }}/docker-compose.yml"
+- name: Copy prometheus.yml
+  template:
+    src: "{{ role_path }}/templates/prometheus.yml.j2"
+    dest: "{{ service_dir }}/prometheus.yml"
+  register: config
+- name: Start Docker Compose
+  docker_compose:
+    project_src: "{{ service_dir }}"
+    pull: true
+    remove_orphans: true
+    restarted: "{{ config.changed }}"

ansible/roles/prometheus/templates/docker-compose.yml.j2

@@ -0,0 +1,13 @@
+version: "3.8"
+
+services:
+  prometheus:
+    image: prom/prometheus
+    container_name: prometheus
+    restart: always
+    volumes:
+      - "{{ service_dir }}/prometheus.yml:/etc/prometheus/prometheus.yml"
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+    ports:
+      - "{{ prometheus_port }}:9090"

ansible/roles/prometheus/templates/prometheus.yml.j2

@@ -0,0 +1,14 @@
+global:
+  scrape_interval:     15s
+
+scrape_configs:
+
+  - job_name: 'prometheus'
+    scrape_interval: 5s
+    static_configs:
+      - targets: ['localhost:9090']
+
+  - job_name: 'traefik'
+    scrape_interval: 5s
+    static_configs:
+      - targets: ['host.docker.internal:{{ traefik_api_port }}']

ansible/roles/prometheus/vars/main.yml

@@ -0,0 +1,3 @@
+service_name: prometheus
+data_dir: "{{ base_data_dir }}/{{ service_name }}"
+service_dir: "{{ base_service_dir }}/{{ service_name }}"