feat! Add prometheus.

defaults/main.yml

@@ -14,10 +14,26 @@ grafana:
   password: changeme
   port: "3001"
 
+prometheus_port: "9090"
+
+# Grafana and InfluxDB volumes
+#
 grafana_volume_base: "/mnt/grafana"
 grafana_setup_path: "{{ grafana_volume_base }}/config"
 grafana_volume_grafana: "{{ grafana_volume_base }}/grafana"
 grafana_volume_influxdb: "{{ grafana_volume_base }}/influxdb"
 
-grafana_uid:
+# Prometheus volumes
-grafana_gid:
+#
+grafana_volume_prometheus: "{{ grafana_volume_base }}/prometheus"
+
+grafana_prometheus_project: my-project
+grafana_prometheus_job_name: prometheus
+grafana_prometheus_scrape_interval: '120s'
+grafana_prometheus_targets:
+  - "10.0.0.35:9100"
+  - "10.0.0.35:8080"
+  
+
+grafana_uid: "472"
+grafana_gid: "0"

molecule/default/molecule.yml

@@ -16,6 +16,7 @@ platforms:
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
       - /var/run/docker.sock:/tmp/docker_mounted.sock
+      - /mnt:/mnt
     privileged: true
     pre_build_image: true
 provisioner:

tasks/config.yml

@@ -0,0 +1,96 @@
+---
+
+- name: GRAFANA | Set up main directory
+  ansible.builtin.file:
+    state: directory
+    path: "{{ item }}"
+    owner: "{{ ansible_effective_user_id }}"
+    group: "{{ ansible_effective_group_id }}"
+    mode: "0750"
+  with_items:
+    - "{{ grafana_setup_path | expanduser | realpath }}/grafana-provisioning/"
+    - "{{ grafana_setup_path | expanduser | realpath }}/grafana-provisioning/datasources/"
+  tags:
+    - configuration
+  become: true
+
+- name: GRAFANA | Set up prometheus configuration directory
+  ansible.builtin.file:
+    state: directory
+    path: "{{ item }}"
+    owner: "{{ ansible_effective_user_id }}"
+    group: "{{ ansible_effective_group_id }}"
+    mode: "0755"
+  with_items:
+    - "{{ grafana_setup_path | expanduser | realpath }}/prometheus/"
+  tags:
+    - configuration
+  become: true
+
+- name: GRAFANA | Set up prometheus data directory
+  ansible.builtin.file:
+    state: directory
+    path: "{{ item }}"
+    owner: "{{ ansible_effective_user_id }}"
+    group: "{{ ansible_effective_group_id }}"
+    mode: "0777"
+  with_items:
+    - "{{ grafana_volume_prometheus | expanduser | realpath }}"
+  tags:
+    - configuration
+  become: true
+
+- name: GRAFANA | Set up influxdb mount point
+  ansible.builtin.file:
+    state: directory
+    path: "{{ item }}"
+    mode: "0750"
+  with_items:
+    - "{{ grafana_volume_influxdb | expanduser | realpath }}"
+  tags:
+    - configuration
+  become: true
+
+- name: GRAFANA | Set up grafana mount point
+  ansible.builtin.file:
+    state: directory
+    path: "{{ item }}"
+    owner: "{% if grafana_uid %}{{ grafana_uid }}{% else %}{{ ansible_effective_user_id }}{% endif %}"
+    group: "{% if grafana_gid %}{{ grafana_gid }}{% else %}{{ ansible_effective_group_id }}{% endif %}"
+    mode: "0777"
+  with_items:
+    - "{{ grafana_volume_grafana | expanduser | realpath }}"
+    - "{{ grafana_volume_grafana | expanduser | realpath }}/plugins"
+  tags:
+    - configuration
+  become: true
+
+- name: GRAFANA | Write docker-compose configuration files
+  ansible.builtin.template:
+    src: "{{ item }}.j2"
+    dest: "{{ grafana_setup_path | expanduser | realpath }}/{{ item }}"
+    mode: '0640'
+  loop:
+    - "docker-compose.yml"
+    - "env.grafana.conf"
+    - "env.influxdb.conf"
+  tags:
+    - configuration
+
+- name: GRAFANA | Write InfluxDB provisioning files
+  ansible.builtin.template:
+    src: "grafana-provisioning/datasources/{{ item }}.j2"
+    dest: "{{ grafana_setup_path | expanduser | realpath }}/grafana-provisioning/datasources/{{ item }}"
+    mode: '0640'
+  loop:
+    - "datasource.yml"
+  tags:
+    - configuration
+
+- name: GRAFANA | Write Prometheus configuration
+  ansible.builtin.template:
+    src: "prometheus-provisioning/prometheus.yml.j2"
+    dest: "{{ grafana_setup_path | expanduser | realpath }}/prometheus/prometheus.yml"
+    mode: '0644'
+  tags:
+    - configuration

tasks/install.yml

@@ -0,0 +1,7 @@
+---
+
+- name: Ensure all requested components are running.
+  community.docker.docker_compose:
+    project_src: "{{ grafana_setup_path | expanduser | realpath }}"
+    build: false
+  become: true

tasks/main.yml

@@ -1,72 +1,14 @@
 ---
 # tasks file for grafana
-- name: Set up main directory
-  ansible.builtin.file:
-    state: directory
-    path: "{{ item }}"
-    owner: "{{ ansible_effective_user_id }}"
-    group: "{{ ansible_effective_group_id }}"
-    mode: "0750"
-  with_items:
-    - "{{ grafana_setup_path | expanduser | realpath }}/grafana-provisioning/"
-    - "{{ grafana_setup_path | expanduser | realpath }}/grafana-provisioning/datasources/"
-  tags:
-    - configuration
-  become: true
 
-- name: Set up influxdb mount point
+- name: "GRAFANA | Configure"
-  ansible.builtin.file:
+  import_tasks: config.yml
-    state: directory
-    path: "{{ item }}"
-    owner: "{% if grafana_uid %}{{ grafana_uid }}{% else %}{{ ansible_effective_user_id }}{% endif %}"
-    group: "{% if grafana_gid %}{{ grafana_gid }}{% else %}{{ ansible_effective_group_id }}{% endif %}"
-    mode: "0750"
-  with_items:
-    - "{{ grafana_volume_influxdb | expanduser | realpath }}"
   tags:
-    - configuration
+    - configure
-  become: true
+    - grafana
 
-- name: Set up grafana mount point
+- name: "GRAFANA | Install"
-  ansible.builtin.file:
+  import_tasks: install.yml
-    state: directory
-    path: "{{ item }}"
-    # owner: "{% if grafana_uid %}{{ grafana_uid }}{% else %}{{ ansible_effective_user_id }}{% endif %}"
-    # group: "{% if grafana_gid %}{{ grafana_gid }}{% else %}{{ ansible_effective_group_id }}{% endif %}"
-    owner: "472"
-    group: "0"
-    mode: "0777"
-  with_items:
-    - "{{ grafana_volume_grafana | expanduser | realpath }}"
-    - "{{ grafana_volume_grafana | expanduser | realpath }}/plugins"
   tags:
-    - configuration
+    - install
-  become: true
+    - grafana
-
-- name: Write configuration files
-  ansible.builtin.template:
-    src: "{{ item }}.j2"
-    dest: "{{ grafana_setup_path | expanduser | realpath }}/{{ item }}"
-    mode: '0640'
-  loop:
-    - "docker-compose.yml"
-    - "env.grafana.conf"
-    - "env.influxdb.conf"
-  tags:
-    - configuration
-
-- name: Write datasource provisioning files
-  ansible.builtin.template:
-    src: "grafana-provisioning/datasources/{{ item }}.j2"
-    dest: "{{ grafana_setup_path | expanduser | realpath }}/grafana-provisioning/datasources/{{ item }}"
-    mode: '0640'
-  loop:
-    - "datasource.yml"
-  tags:
-    - configuration
-
-- name: Ensure all requested components are running.
-  community.docker.docker_compose:
-    project_src: "{{ grafana_setup_path | expanduser | realpath }}"
-    build: false
-  become: true

templates/docker-compose.yml.j2

@@ -1,7 +1,21 @@
 version: '3.9'
 services:
+  prometheus:
+    image: prom/prometheus:latest
+    container_name: monitoring_prometheus
+    restart: unless-stopped
+    volumes:
+      - '{{ grafana_setup_path | expanduser | realpath }}/prometheus:/etc/prometheus'
+      - '{{ grafana_volume_prometheus | expanduser | realpath }}:/prometheus'
+    ports:
+      {% if prometheus_port is defined %}- "{{ prometheus_port }}:9090"{% endif %}
+      
+    networks:
+      - grafana
+
   influxdb:
     image: influxdb:latest
+    container_name: monitoring_influxdb
     restart: always
     ports:
       - '{{ influxdb.port }}:8086'
@@ -14,6 +28,7 @@ services:
 
   grafana:
     image: grafana/grafana-oss:latest
+    container_name: monitoring_grafana
     restart: always
     ports:
       - '{{ grafana.port }}:3000'
@@ -22,14 +37,11 @@ services:
       - "{{ grafana_setup_path | expanduser | realpath }}/grafana-provisioning/:/etc/grafana/provisioning/"
     depends_on:
       - influxdb
+      - prometheus
     env_file:
       - "{{ grafana_setup_path | expanduser | realpath }}/env.grafana.conf"
     networks:
       - grafana
 
-# Run as user:
-#     owner: "{% if grafana_uid %}{{ grafana_uid }}{% else %}{{ ansible_effective_user_id }}{% endif %}"
-#     group: "{% if grafana_gid %}{{ grafana_gid }}{% else %}{{ ansible_effective_group_id }}{% endif %}"
-
 networks:
   grafana: {}

templates/grafana-provisioning/datasources/datasource.yml.j2

@@ -1,4 +1,4 @@
- lines (14 sloc) 345 Bytes
+---
 apiVersion: 1
 datasources:
   - name: InfluxDB

templates/prometheus-provisioning/prometheus.yml.j2

@@ -0,0 +1,36 @@
+# my global config
+global:
+  scrape_interval:     120s # By default, scrape targets every 15 seconds.
+  evaluation_interval: 120s # By default, scrape targets every 15 seconds.
+  # scrape_timeout is set to the global default (10s).
+
+  # Attach these labels to any time series or alerts when communicating with
+  # external systems (federation, remote storage, Alertmanager).
+  external_labels:
+      monitor: "{{ grafana_prometheus_project }}"
+
+# Load and evaluate rules in this file every 'evaluation_interval' seconds.
+rule_files:
+  # - "alert.rules"
+  # - "first.rules"
+  # - "second.rules"
+
+# A scrape configuration containing exactly one endpoint to scrape:
+# Here it's Prometheus itself.
+scrape_configs:
+  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
+  - job_name: "{{ grafana_prometheus_job_name }}"
+
+    # Override the global default and scrape targets from this job every 5 seconds.
+    scrape_interval: "{{ grafana_prometheus_scrape_interval }}"
+
+    # metrics_path defaults to '/metrics'
+    # scheme defaults to 'http'.
+
+    static_configs:
+      - targets:
+        - 'localhost:9090'
+        {% for target in grafana_prometheus_targets %}
+- "{{ target }}""
+        {% endfor %}
+