• Voraussetzung: Installation der InfluxDB
• Installation Telegraf Paket:

$ sudo apt-get install apt-transport-https
...
$ wget -qO- https://repos.influxdata.com/influxdb.key | sudo apt-key add -
 OK
$ source /etc/lsb-release

$ echo "deb https://repos.influxdata.com/${DISTRIB_ID,,} ${DISTRIB_CODENAME} stable" | sudo tee /etc/apt/sources.list.d/influxdb.list
 deb https://repos.influxdata.com/ubuntu focal stable

$ sudo apt-get update && sudo apt-get install telegraf
...
Reading package lists… Done
Building dependency tree
Reading state information… Done
The following NEW packages will be installed:
   telegraf
0 upgraded, 1 newly installed, 0 to remove and 13 not upgraded.
...
Preparing to unpack …/telegraf_1.19.1-1_arm64.deb …
Unpacking telegraf (1.19.1-1) …
Setting up telegraf (1.19.1-1) …
Created symlink /etc/systemd/system/multi-user.target.wants/telegraf.service → /lib/systemd/system/telegraf.service.

• Dienst starten

$ systemctl start telegraf

• Statusabfrage

$ systemctl status telegraf
 ● telegraf.service - The plugin-driven server agent for reporting metrics into InfluxDB
      Loaded: loaded (/lib/systemd/system/telegraf.service; enabled; vendor preset: enabled)
      Active: active (running) since Tue 2021-07-20 22:23:30 CEST; 32min ago
        Docs: https://github.com/influxdata/telegraf
    Main PID: 1686 (telegraf)
       Tasks: 10 (limit: 973)
      CGroup: /system.slice/telegraf.service
              └─1686 /usr/bin/telegraf -config /etc/telegraf/telegraf.conf -config-directory /etc/telegraf/telegraf.d

• Telegraf konfigurieren:
  Konfigurationsdatei: /etc/telegraf/telegraf.conf (zunächst als default durch Installation angelegt)
  Anzeige der Konfiguration und schreiben in eine Kopie im aktuellen Verzeichnis

$ telegraf config | tee telegraf.conf