Add telegraf to router

roles/router-telegraf/files/telegraf.conf

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+[agent]
+  hostname = "router"
+  interval = "1m"
+  debug = false
+  quiet = false
+  logtarget = "stderr"
+[[outputs.prometheus_client]]
+  listen = ":9273"
+[[inputs.cpu]]
+  percpu = false
+  report_active = true
+[[inputs.system]]
+[[inputs.mem]]
+[[inputs.net]]
+[[inputs.exec]]
+  command = "sh /usr/lib/telegraf/edgeos.sh --interfaces"
+  data_format = "influx"
+[[inputs.exec]]
+  command = "sh /usr/lib/telegraf/edgeos.sh --firmware"
+  data_format = "influx"
+  interval = "24h"

roles/router-telegraf/tasks/install_telegraf.yml

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+---
+- name: Download telegraf
+  get_url:
+    url: https://github.com/x70b1/telegraf-edgeos/releases/download/v{{ telegraf.release }}/telegraf_{{ telegraf.release }}+{{ telegraf.flavour }}_{{ telegraf.arch }}.deb
+    dest: /tmp/telegraf.deb
+
+- name: Install telegraf
+  shell:
+    cmd: dpkg -i /tmp/telegraf.deb
+
+- name: create directory for configuration
+  file:
+    path: "/etc/telegraf"
+    state: directory
+    mode: 0755
+
+- name: copy configuration
+  copy:
+    src: "telegraf.conf"
+    dest: "/etc/telegraf/telegraf.conf"
+
+- name: start and enable telegraf
+  systemd:
+    name: docker
+    state: started
+    enabled: true
+
+- name: Remove telegraf.deb file
+  file:
+    path: /tmp/telegraf.deb
+    state: absent

roles/router-telegraf/tasks/main.yml

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+---
+- import_tasks: install_telegraf.yml
+  become: yes

roles/router-telegraf/vars/main.yml

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+---
+telegraf:
+  release: 1.26.2-1
+  flavour: prometheus
+  arch: mipsel