feat: added telegraf configuration deployment using template

Signed-off-by: Louis Vallat <contact@louis-vallat.dev>

roles/telegraf/handlers/main.yaml

@@ -0,0 +1,5 @@
+---
+- name: Restart telegraf
+  ansible.builtin.service:
+    name: telegraf.service
+    state: restarted

roles/telegraf/tasks/main.yaml

@@ -1,49 +1,17 @@
 ---
-- name: Install required system packages
-  ansible.builtin.apt:
-    pkg:
-      - apt-transport-https
-      - ca-certificates
-      - gnupg
-      - curl
-    state: latest
-    update_cache: true
-
-- name: Add Influxdata GPG apt key
-  ansible.builtin.apt_key:
-    url: "https://repos.influxdata.com/influxdata-archive.key"
-    state: present
-
-- name: Add Influxdata repository
-  ansible.builtin.apt_repository:
-    repo: deb https://repos.influxdata.com/{{ ansible_distribution | lower }} {{ ansible_distribution_release }} stable
-    state: present
-    filename: "telegraf"
-
-- name: Install telegraf package
-  ansible.builtin.apt:
-    pkg:
-      - telegraf
-    state: latest
-    update_cache: true
-
-- name: Gather the package facts
-  ansible.builtin.package_facts:
-    manager: auto
-
 - name: Add telegraf to docker group
   ansible.builtin.user:
     name: telegraf
     groups: docker
     append: true
-  when: "'docker-ce' in ansible_facts.packages"
+  when: "docker is defined and docker == 'true'"
+  notify:
+    - Restart telegraf
 
-- name: Enable telegraf service
+- name: Deploy configuration file
-  ansible.builtin.service:
+  ansible.builtin.template:
-    name: telegraf
+    src: telegraf.conf.j2
-    enabled: true
+    dest: /etc/telegraf/telegraf.conf
-
+    mode: "644"
-- name: Stop telegraf service (configure it before starting)
+  notify:
-  ansible.builtin.service:
+    - Restart telegraf
-    name: telegraf
-    state: stopped

telegraf.yaml

@@ -1,5 +0,0 @@
----
-- name: "Install telegraf on debian."
-  hosts: telegraf
-  roles:
-      - telegraf

templates/telegraf.conf.j2

@@ -0,0 +1,35 @@
+[agent]
+  hostname = "{{ansible_hostname}}"
+  flush_interval = "15s"
+  interval = "15s"
+
+[[inputs.cpu]]
+    percpu = true
+    totalcpu = true
+    collect_cpu_time = false
+    report_active = false
+[[inputs.disk]]
+    ignore_fs = ["tmpfs", "devtmpfs", "devfs"]
+[[inputs.diskio]]
+[[inputs.mem]]
+[[inputs.netstat]]
+[[inputs.net]]
+    ignore_protocol_stats = true
+[[inputs.system]]
+[[inputs.swap]]
+[[inputs.processes]]
+[[inputs.kernel]]
+
+{% if docker == true %}
+[[inputs.docker]]
+    endpoint = "unix:///var/run/docker.sock"
+    container_names = []
+    timeout = "5s"
+    total = false
+{% endif %}
+
+[[outputs.influxdb_v2]]
+    urls = ["https://influxdb.louis-vallat.dev"]
+    organization = "louis-vallat.dev"
+    bucket = "telegraf"
+    token = "{{telegraf_token}}"