install telegraf (configuration still to be done)

roles/server/tasks/utilities/telegraf.yml

@@ -0,0 +1,20 @@
+- name: server | telegraf | download key
+  uri:
+    url: "https://repos.influxdata.com/influxdb.key"
+    dest: "/tmp/influxdb.key" # not required. A path of where to download the file to (if desired). If I(dest) is a directory, the basename of the file on the remote server will be used.
+
+- name: server | telegraf | verify and import key
+  shell:
+    cmd: "echo '23a1c8836f0afc5ed24e0486339d7cc8f6790b83886c4c96995b88a061c5bb5d influxdb.key' | sha256sum -c && cat influxdb.key | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/influxdb.gpg > /dev/null"
+    creates: "/etc/apt/trusted.gpg.d/influxdb.gpg"
+
+- name: server | telegraf | add repository
+  shell:
+    cmd: "echo 'deb [signed-by=/etc/apt/trusted.gpg.d/influxdb.gpg] https://repos.influxdata.com/debian stable main' | sudo tee /etc/apt/sources.list.d/influxdata.list"
+    creates: "/etc/apt/sources.list.d/influxdata.list"
+
+- name: server | telegraf | install telegraf
+  apt:
+    name: "telegraf" # not required. A list of package names, like C(foo), or package specifier with version, like C(foo=1.0). Name wildcards (fnmatch) like C(apt*) and version wildcards like C(foo=1.0*) are also supported.
+    state: latest
+    update_cache: yes