Feature provisioning dashboards (#121)

* Fix grafana provisioning dir scaned on remote host rathen on localhost. And add missing tags.

* Add parameter and tasks to use grafana dashboard provsioning like it already exists for datasources.

* Fix yaml lint, and remove unused commented task.

* Add a rsync install task when using grafana_provisioning.

* Fix dashboard permissions for idempotency.

* Move rsync installation to molecule default prepare playbook. Add a note about rsync need in README.

* Fix molecule default prepare playbook by removing bad condition.

* Move rsync requirement to requirements section.

* Add "provisioned dashboards changed" handler.

* Replace when "provisioned dashboards changed" tasks by a handler notification.

* Fix lint: remove trailing spaces

[minor] release

README.md

@@ -15,14 +15,16 @@ Provision and manage [grafana](https://github.com/grafana/grafana) - platform fo
 - Ansible >= 2.5
 - libselinux-python on deployer host (only when deployer machine has SELinux)
 - grafana >= 5.1 (for older grafana versions use this role in version 0.10.1 or earlier)
+- rsync if you plan to use grafana provisioning
 
 ## Role Variables
 
 All variables which can be overridden are stored in [defaults/main.yml](defaults/main.yml) file as well as in table below.
 
 | Name           | Default Value | Description                        |
 | -------------- | ------------- | -----------------------------------|
-| `grafana_use_provisioning` | true | Use Grafana provisioning capalibity when possible (**grafana_version=latest will assume >= 5.0**) |
+| `grafana_use_provisioning` | true | Use Grafana provisioning capalibity when possible (**grafana_version=latest will assume >= 5.0**). |
+| `grafana_provisioning_synced` | false | Ensure no previously provisioned dashboards are kept if not referenced anymore. |
 | `grafana_system_user` | grafana | Grafana server system user |
 | `grafana_system_group` | grafana | Grafana server system group |
 | `grafana_version` | latest | Grafana package version |

defaults/main.yml

@@ -5,6 +5,9 @@ grafana_yum_repo_template: etc/yum.repos.d/grafana.repo.j2
 # Should we use the provisioning capability when possible (provisioning require grafana >= 5.0)
 grafana_use_provisioning: true
 
+# Should the provisioning be kept synced. If true, previous provisioned objects will be removed if not referenced anymore.
+grafana_provisioning_synced: false
+
 grafana_instance: "{{ ansible_fqdn | default(ansible_host) | default(inventory_hostname) }}"
 
 grafana_logs_dir: "/var/log/grafana"

handlers/main.yml

@@ -4,3 +4,22 @@
   service:
     name: grafana-server
     state: restarted
+
+- name: Set privileges on provisioned dashboards
+  become: true
+  file:
+    path: "/var/lib/grafana/dashboards"
+    recurse: true
+    owner: grafana
+    group: grafana
+    mode: 0640
+  listen: "provisioned dashboards changed"
+
+- name: Set privileges on provisioned dashboards directory
+  become: true
+  file:
+    path: "/var/lib/grafana/dashboards"
+    state: directory
+    recurse: false
+    mode: 0755
+  listen: "provisioned dashboards changed"

molecule/default/prepare.yml

@@ -2,4 +2,7 @@
 - name: Prepare
   hosts: all
   gather_facts: false
-  tasks: []
+  tasks:
+    - name: Install rsync for grafana dashboard provisioning
+      package:
+        name: ["rsync"]

tasks/dashboards.yml

@@ -1,4 +1,15 @@
 ---
+- name: Empty local grafana dashboard directory
+  become: false
+  file:
+    path: /tmp/dashboards
+    state: absent
+  delegate_to: localhost
+  run_once: true
+  check_mode: false
+  changed_when: false
+  when: grafana_use_provisioning and grafana_provisioning_synced
+
 - name: Create local grafana dashboard directories
   become: false
   file:
@@ -8,6 +19,7 @@
   delegate_to: localhost
   run_once: true
   check_mode: false
+  changed_when: false
 
 # - name: download grafana dashboard from grafana.net to local folder
 #   become: false
@@ -96,8 +108,9 @@
     - "{{ grafana_dashboards_dir }}/*.json"
   delegate_to: localhost
   run_once: true
+  changed_when: false
 
-- name: import grafana dashboards
+- name: import grafana dashboards through API
   uri:
     url: "{{ grafana_api_url }}/api/dashboards/db"
     user: "{{ grafana_security.admin_user }}"
@@ -109,6 +122,7 @@
   no_log: true
   with_fileglob:
     - "/tmp/dashboards/*"
+  when: not grafana_use_provisioning
 
 # TODO: uncomment this when ansible 2.7 will be min supported version
 # - name: import grafana dashboards
@@ -123,3 +137,36 @@
 #   no_log: true
 #   with_fileglob:
 #     - "/tmp/dashboards/*"
+
+- name: Create/Update dashboards file (provisioning)
+  become: true
+  copy:
+    dest: "/etc/grafana/provisioning/dashboards/ansible.yml"
+    content: |
+      apiVersion: 1
+      providers:
+       - name: 'default'
+         orgId: 1
+         folder: ''
+         type: file
+         options:
+           path: /var/lib/grafana/dashboards
+    backup: false
+    owner: root
+    group: grafana
+    mode: 0640
+  notify: restart grafana
+  when: grafana_use_provisioning
+
+- name: Import grafana dashboards through provisioning
+  synchronize:
+    src: "/tmp/dashboards/"
+    dest: "/var/lib/grafana/dashboards"
+    archive: false
+    checksum: true
+    recursive: true
+    delete: "{{ grafana_provisioning_synced }}"
+    rsync_opts:
+      - "--no-motd"
+  when: grafana_use_provisioning
+  notify: "provisioned dashboards changed"

tasks/main.yml

@@ -79,9 +79,12 @@
   find:
     paths: "{{ grafana_dashboards_dir }}"
     patterns: '*.json'
-  register: found_dashboards
   delegate_to: localhost
   run_once: true
+  register: found_dashboards
+  tags:
+    - grafana_configure
+    - grafana_dashboards
 
 - include: dashboards.yml
   when: grafana_dashboards | length > 0 or found_dashboards.matched > 0