add cloudflare exporter

defaults/main.yml

@@ -1,4 +1,8 @@
 ---
+docker_compose_path: "/opt/docker-compose"
+
+prometheus_docker_network: prometheus
+
 prometheus_docker_pull: "no"
 
 exporter_upgrade: ""

tasks/exporter/_docker.yml

@@ -0,0 +1,46 @@
+---
+- name: '{{ exporter }} exporter | check if docker is installed'
+  shell:
+    cmd: {{ item }} --help
+  register: result
+  check_mode: false
+  changed_when: false
+  failed_when: result.rc != 0 and result.rc != 127
+  with_items:
+    - docker
+    - docker-compose
+  tags: [ 'prometheus_{{ exporter }}' ]
+
+- name: '{{ exporter }} exporter | create docker-compose directory'
+  file:
+    path: "{{ docker_compose_directory }}"
+    state: directory
+    mode: '0755'
+  tags: [ 'prometheus_{{ exporter }}' ]
+
+- name: '{{ exporter }} exporter | copy docker-compose file'
+  template:
+    src: compose/{{ exporter }}.yml.j2
+    dest: /opt/docker-compose/{{ exporter }}/docker-compose.yml
+    owner: root
+    group: root
+    mode: 0644
+  notify: "{{ exporter }}-restart"
+  tags: [ 'prometheus_{{ exporter }}' ]
+
+- name: '{{ exporter }} exporter | systemd | install unit file'
+  template:
+    src: systemd/docker-compose.service.j2
+    dest: /etc/systemd/system/docker-compose@{{ exporter }}.service
+    owner: root
+    group: root
+    mode: 0600
+  tags: [ 'prometheus_{{ exporter }}' ]
+
+- name: '{{ exporter }} exporter | systemd | enable service'
+  systemd:
+    daemon_reload: yes
+    name: docker-compose@{{ exporter }}
+    enabled: true
+  ignore_errors: '{{ ansible_check_mode }}'
+  tags: [ 'prometheus_{{ exporter }}' ]

tasks/exporter/cloudflare.yml

@@ -0,0 +1,9 @@
+---
+- name: cloudflare | check vars are defined
+  assert:
+    that:
+      - cloudflare_api_key is defined
+  tags: ['prometheus_cloudflare_exporter']
+
+- include_tasks: _docker.yml
+  tags: ['prometheus_cloudflare_exporter']

tasks/server/prometheus.yml

@@ -7,7 +7,7 @@
 
 - name: 'prometheus | server | create docker network'
   docker_network:
-    name: 'prometheus'
+    name: '{{ prometheus_docker_network }}'
   tags: ['prometheus_server']
 
 - name: 'prometheus | server | create docker volume data'
@@ -50,7 +50,7 @@
       - '--web.console.templates=/usr/share/prometheus/consoles'
       - '--web.enable-admin-api'
     networks:
-    - { name: prometheus }
+    - { name: {{ prometheus_docker_network }} }
     ports:
       - "9090:9090"
     log_driver: syslog

templates/compose/cloudflare.yml.j2

@@ -0,0 +1,17 @@
+version: '3.7'
+
+networks:
+  {{ prometheus_docker_network }}:
+    external: true
+
+services:
+  cloudflare-exporter:
+    container_name: cloudflare-exporter
+    image: ghcr.io/lablabs/cloudflare_exporter:latest
+    restart: unless-stopped
+    environment:
+      - CF_API_TOKEN={{ cloudflare_api_key }}
+    ports:
+      - 8082:8080
+    networks:
+      - {{ prometheus_docker_network }}

templates/conf/prometheus.yml.j2

@@ -371,3 +371,19 @@ scrape_configs:
         regex: '(.*):8080'
         replacement: '${1}'
 {% endif %}
+
+{% if prometheus_cloudflare_exporter_targets is defined %}
+  # cloudflare #
+  - job_name: cloudflare
+    scrape_interval: 30s
+    static_configs:
+      - targets:
+{% for target in prometheus_cloudflare_exporter_targets %}
+        - {{ target }}:8082
+  {% endfor %}
+  relabel_configs:
+      - source_labels: [ __address__ ]
+        target_label: instance
+        regex: '(.*):8082'
+        replacement: '${1}'
+{% endif %}

templates/systemd/docker-compose.service.j2

@@ -0,0 +1,14 @@
+[Unit]
+Description=%i service with docker compose
+PartOf=docker.service
+After=docker.service
+
+[Service]
+Type=oneshot
+RemainAfterExit=true
+WorkingDirectory=/opt/docker-compose/{{ exporter }}
+ExecStart=/usr/bin/docker-compose up -d
+ExecStop=/usr/bin/docker-compose down
+
+[Install]
+WantedBy=multi-user.target