Add telegraf role

roles/telegraf/defaults/main.yaml

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+---
+telegraf_package_name: telegraf
+telegraf_package_state: present
+
+telegraf_service_name: telegraf
+telegraf_service_state: started
+telegraf_service_enabled: yes
+
+telegraf_config_global_tags: {}
+telegraf_config_agent:
+  interval: 10s
+  round_interval: true
+  metric_batch_size: 1000
+  metric_buffer_limit: 10000
+  collection_jitter: 0s
+  flush_interval: 10s
+  flush_jitter: 0s
+  precision:
+  hostname:
+  omit_hostname: false
+telegraf_config_outputs:
+  influxdb: {}
+telegraf_config_inputs:
+  cpu:
+    - percpu: true
+      totalcpu: true
+      collect_cpu_time: false
+      report_active: false
+  disk:
+    - ignore_fs:
+      - tmpfs
+      - devtmpfs
+      - devfs
+      - iso9660
+      - overlay
+      - aufs
+      - squashfs
+  diskio: []
+  kernel: []
+  mem: []
+  processes: []
+  swap: []
+  system: []
+  conntrack: []
+  ipset: []
+  iptables:
+    - table: filter
+      chains: [ "INPUT", "OUTPUT", "FORWARD", "LOG_DROP", "LOG_ACCEPT", "ICMP_FLOOD", "LIMIT_SSH" ]
+    - table: filter
+      name_override: ip6tables
+      chains: [ "INPUT", "OUTPUT", "FORWARD", "LOG_DROP", "LOG_ACCEPT", "ICMP_FLOOD", "LIMIT_SSH" ]
+  kernel_vmstat: []
+  net: []
+  netstat: []
+  procstat:
+    - systemd_unit: minecraft.service

roles/telegraf/handlers/main.yaml

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+---
+- name: reload telegraf
+  service:
+    name: "{{ telegraf_service_name }}"
+    state: restarted
+  when: telegraf_service_enabled
+
+- name: telegraf daemon-reload
+  systemd:
+    name: "{{ telegraf_service_name }}"
+    daemon_reload: yes
+    state: restarted
+
+# vim:ft=yaml.ansible:

roles/telegraf/tasks/Debian.yaml

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+---
+- name: add influx apt key
+  apt_key:
+    url: https://repos.influxdata.com/influxdb.key
+    state: present
+
+- name: configure apt repository
+  apt_repository:
+    repo: "deb https://repos.influxdata.com/{{ ansible_distribution | lower }} {{ ansible_distribution_release }} stable"
+    filename: influxdb
+    update_cache: yes
+    state: present

roles/telegraf/tasks/main.yaml

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+---
+#- name: gather OS specific variables
+#  include_vars: "{{ item }}"
+#  with_first_found:
+#    - "{{ ansible_distribution }}-{{ ansible_distribution_major_version }}.yaml"
+#    - "{{ ansible_distribution }}.yaml"
+#    - "{{ ansible_os_family }}.yaml"
+
+- name: run os specific tasks
+  include: "{{ item }}"
+  with_first_found:
+    - "{{ ansible_os_family }}.yaml"
+
+- name: manage package
+  package:
+    name: "{{ telegraf_package_name }}"
+    state: "{{ telegraf_package_state }}"
+
+- name: configure
+  template:
+    src: telegraf.conf.j2
+    dest: /etc/telegraf/telegraf.conf
+    owner: root
+    group: root
+    mode: 0644
+  notify: reload telegraf
+
+- name: create systemd override directory
+  file:
+    path: /etc/systemd/system/telegraf.service.d
+    owner: root
+    group: root
+    mode: 0755
+    state: directory
+
+- name: patch systemd unit
+  copy:
+    dest: /etc/systemd/system/telegraf.service.d/override.conf 
+    owner: root
+    group: root
+    mode: 0644
+    content: |
+      [Service]
+      CapabilityBoundingSet=CAP_NET_RAW CAP_NET_ADMIN
+      AmbientCapabilities=CAP_NET_RAW CAP_NET_ADMIN
+  notify: telegraf daemon-reload 
+
+- name: manage service
+  service:
+    name: "{{ telegraf_service_name }}"
+    state: "{{ telegraf_service_state }}"
+    enabled: "{{ telegraf_service_enabled }}"

roles/telegraf/templates/telegraf.conf.j2

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+# {{ ansible_managed }}
+
+{% macro toml_scalar(v, seq=False) %}
+{% if v is string %}
+  "{{ v | quote }}"{% if seq %},{% endif %}
+{% elif v is sameas True or v is sameas False %}
+  {{ v | bool | lower }}{% if seq %},{% endif %}
+{% elif v is sameas None %}
+  ""{% if seq %},{% endif %}
+{% elif v is number %}
+  {{ v }}{% if seq %},{% endif %}
+{% endif %}
+{% endmacro %}
+
+{% if telegraf_config_global_tags %}
+[global_tags]
+{% for k, v in telegraf_config_global_tags.items() | default({}) %}
+{% if v is string %}
+  {{ k }} = "{{ v | quote }}"
+{% elif v is sameas True or v is sameas False %}
+  {{ k }} = {{ v | bool | lower }}
+{% elif v is sameas None %}
+  {{ k }} = ""
+{% else %}
+  {{ k }} = {{ v }}
+{% endif %}
+{% endfor %}
+{% endif %}
+
+
+{% if telegraf_config_agent %}
+[agent]
+{% for k, v in telegraf_config_agent.items() | default({}) %}
+{% if v is string %}
+  {{ k }} = "{{ v | quote }}"
+{% elif v is sameas True or v is sameas False %}
+  {{ k }} = {{ v | bool | lower }}
+{% elif v is sameas None %}
+  {{ k }} = ""
+{% else %}
+  {{ k }} = {{ v }}
+{% endif %}
+{% endfor %}
+{% endif %}
+
+
+{% if telegraf_config_outputs %}
+{% for name, output in telegraf_config_outputs.items() | default({}) %}
+[[outputs.{{ name }}]]
+{% for k, v in output.items() | default({}) %}
+{% if v is string %}
+  {{ k }} = "{{ v | quote }}"
+{% elif v is sameas True or v is sameas False %}
+  {{ k }} = {{ v | bool | lower }}
+{% elif v is sameas None %}
+  {{ k }} = ""
+{% elif v is number %}
+  {{ k }} = {{ v }}
+{% elif v is sequence %}
+  {{ k }} = [
+{% for i in v | default([]) %}
+    {{ toml_scalar(i, seq=True) }}
+{% endfor %}
+  ]
+{% endif %}
+{% endfor %}
+{% endfor %}
+{% endif %}
+
+
+{% if telegraf_config_inputs %}
+{% for name, items in telegraf_config_inputs.items() | default({}) %}
+{% for item in items %}
+[[inputs.{{ name }}]]
+{% for k, v in item.items() | default({}) %}
+{% if v is string %}
+  {{ k }} = "{{ v | quote }}"
+{% elif v is sameas True or v is sameas False %}
+  {{ k }} = {{ v | bool | lower }}
+{% elif v is sameas None %}
+  {{ k }} = ""
+{% elif v is number %}
+  {{ k }} = {{ v }}
+{% elif v is sequence %}
+  {{ k }} = [
+{% for i in v | default([]) %}
+    {{ toml_scalar(i, seq=True) }}
+{% endfor %}
+  ]
+{% endif %}
+{% endfor %}
+{% else %}
+[[inputs.{{ name }}]]
+{% endfor %}
+{% endfor %}
+{% endif %}