refactor use use Docker Compose to create containers

Signed-off-by: Jakub Sokołowski <jakub@status.im>

README.md

@@ -19,7 +19,7 @@ grafana_prometheus_sources:
 You should also configure OAuth:
 ```yaml
 grafana_oauth_id: '123qwe123qwe123'
-grafana_oauth_secret: 'qweasdqweasdqweasdqweasd
+grafana_oauth_secret: 'qweasdqweasdqweasdqweasd'
 grafana_oauth_gh_org: 'evil-corp'
 grafana_oauth_gh_team_ids: [ 1234, 5678 ]
 ```

defaults/main.yml

@@ -1,21 +1,27 @@
 ---
+grafana_service_name: 'grafana'
+grafana_service_path: '/docker/{{ grafana_service_name }}'
+grafana_compose_file: '{{ grafana_service_path }}/docker-compose.yml'
+# Container
+grafana_version: '7.3.4'
+grafana_image: 'grafana/grafana:{{ grafana_version }}'
+grafana_cont_name: '{{ grafana_service_name }}'
+grafana_cont_vol: '{{ grafana_service_path }}/data'
+grafana_cont_links: []
+grafana_cont_ext_links: []
+grafana_port: 9400
+# see: http://docs.grafana.org/installation/docker/#migration-from-a-previous-version-of-the-docker-container-to-5-1-or-later
+grafana_cont_uid: 472
+# Permission adjust for dockremap.
+grafana_host_uid: '{{ 100000 + grafana_cont_uid | int }}'
+
+# Public domain
 grafana_domain: ~
 
 # Main configuration for sources
 grafana_prometheus_sources: []
 #  - { name: 'node-01', addr: '1.2.3.4', port: 8080, path: 'proxy/' }
 
-grafana_version: '7.3.4'
-grafana_image: 'grafana/grafana:{{ grafana_version }}'
-grafana_cont_name: grafana
-grafana_cont_vol: '/docker/grafana'
-grafana_cont_links: []
-grafana_port: 9400
-# see: http://docs.grafana.org/installation/docker/#migration-from-a-previous-version-of-the-docker-container-to-5-1-or-later
-grafana_cont_uid: 472
-# adjust for dockremap
-grafana_host_uid: '{{ 100000 + grafana_cont_uid | int }}'
-
 # Admin user
 grafana_username: ~
 grafana_password: ~
@@ -45,9 +51,7 @@ grafana_snaphots_enabled: true
 grafana_plugins:
   - https://github.com/GoshPosh/grafana-meta-queries/archive/0.0.3.zip
 
-
-
-# generic container settings
-cont_state: started
-cont_restart: false
-cont_recreate: false
+# Generic container options
+compose_recreate: 'smart'
+compose_state: 'present'
+compose_restart: false

handlers/main.yml

@@ -1,5 +0,0 @@
----
-- name: restart grafana
-  docker_container:
-    name: '{{ grafana_cont_name }}'
-    restart: true

tasks/config.yml

@@ -1,4 +1,13 @@
 ---
+- name: Create grafana directories
+  file:
+    path: '{{ grafana_cont_vol }}'
+    state: directory
+    owner: 'dockremap'
+    group: 'docker'
+    mode: 0775
+    recurse: true
+
 - name: Create grafana directories
   file:
     path: '{{ item }}'
@@ -8,18 +17,20 @@
     mode: 0775
     recurse: true
   with_items:
-    - '{{ grafana_cont_vol }}'
+    - '{{ grafana_cont_vol }}/etc'
     - '{{ grafana_cont_vol }}/etc/provisioning/datasources'
+    - '{{ grafana_cont_vol }}/lib'
     - '{{ grafana_cont_vol }}/lib/plugins'
     - '{{ grafana_cont_vol }}/lib/dashboards'
 
-- name: Copy grafana config file
+- name: Generate main config file
   template:
     src: 'grafana.ini.j2'
     dest: '{{ grafana_cont_vol }}/etc/grafana.ini'
     owner: '{{ grafana_host_uid }}'
     group: docker
-  register: cont_conf
+    mode: 0640
+  register: grafana_config
 
 - name: Generate datasource config file
   template:
@@ -27,9 +38,9 @@
     dest: '{{ grafana_cont_vol }}/etc/provisioning/datasources/prometheus.yml'
     owner: '{{ grafana_host_uid }}'
     group: docker
-  notify: restart grafana
+    mode: 0640
 
-- name: Install plugins from zip archives
+- name: Install plugins from ZIP archives
   unarchive:
     src: '{{ item }}'
     dest: '{{ grafana_cont_vol }}/lib/plugins'

tasks/consul.yml

@@ -2,13 +2,13 @@
 - name: Create Consul service definition
   include_role: name=consul-service
   vars:
-    consul_config_name: 'grafana'
+    consul_config_name: '{{ grafana_service_name }}'
     consul_services:
-      - name: 'grafana'
-        tags: ['monitor', 'metrics-view']
+      - name: '{{ grafana_service_name }}'
+        tags: ['monitor', 'grafana']
         port: '{{ grafana_port }}'
         checks:
-          - id: grafana-health
-            name: Grafana current health
-            type: http
+          - id: '{{ grafana_service_name }}-health'
+            name: 'Grafana current health'
+            type: 'http'
             http: 'http://localhost:{{ grafana_port }}/api/health'

tasks/container.yml

@@ -1,16 +1,17 @@
 ---
-- name: Start grafana container
-  docker_container:
-    name: '{{ grafana_cont_name }}'
-    image: '{{ grafana_image }}'
+- name: Create compose file
+  template:
+    src: 'docker-compose.yml.j2'
+    dest: '{{ grafana_compose_file }}'
+    owner: 'dockremap'
+    group: 'docker'
+    mode: 0640
+
+- name: Create containers
+  docker_compose:
+    project_src: '{{ grafana_service_path }}'
     pull: true
-    restart_policy: always
-    state: '{{ cont_state }}'
-    recreate: '{{ cont_recreate }}'
-    restart: '{{ cont_conf.changed | default(cont_restart) }}'
-    ports:
-      - '127.0.0.1:{{ grafana_port }}:3000'
-    links: '{{ grafana_cont_links }}'
-    volumes:
-      - '{{ grafana_cont_vol }}/lib:/var/lib/grafana'
-      - '{{ grafana_cont_vol }}/etc:/etc/grafana'
+    build: false
+    state: '{{ compose_state }}'
+    restarted: '{{ compose_restart }}'
+    recreate: '{{ grafana_config.changed | ternary("always", compose_recreate) }}'

templates/docker-compose.yml.j2

@@ -0,0 +1,18 @@
+---
+version: '3.7'
+services:
+  app:
+    container_name: '{{ grafana_cont_name }}'
+    image: '{{ grafana_image }}'
+    restart: always
+    ports:
+      - '127.0.0.1:{{ grafana_port }}:{{ grafana_port }}'
+    volumes:
+      - '{{ grafana_cont_vol }}/lib:/var/lib/grafana'
+      - '{{ grafana_cont_vol }}/etc:/etc/grafana'
+{% if grafana_cont_ext_links|length > 0 %}
+    external_links: {{ grafana_cont_ext_links | to_yaml }}
+{% endif %}
+{% if grafana_cont_links|length > 0 %}
+    links: {{ grafana_cont_links | to_yaml }}
+{% endif %}

templates/grafana.ini.j2

@@ -1,4 +1,5 @@
 [server]
+http_port = {{ grafana_port }}
 domain = {{ grafana_domain | mandatory }}/
 root_url = https://{{ grafana_domain | mandatory }}/
 

templates/prometheus.yml.j2

@@ -1,10 +1,5 @@
 apiVersion: 1
 
-deleteDatasources:
-{% for service in grafana_prometheus_sources %}
-  - id: {{ loop.index }}
-{% endfor %}
-
 datasources:
 {% for service in grafana_prometheus_sources %}
 - name: {{ service.name }}