Install telegraf on your raspberry pi

wget https://dl.influxdata.com/telegraf/releases/telegraf-1.4.1_linux_armhf.tar.gz
tar xf telegraf-1.4.1_linux_armhf.tar.gz
cp -av telegraf/* /

Systemd script

Place this in /etc/systemd/system/telegraf.service

[Unit]
Description=Telegraf service

[Service]
ExecStart=/usr/bin/telegraf -config /etc/telegraf/telegraf.conf
NotifyAccess=main
#WatchdogSec=10
Restart=on-failure

then when you're done configuring it in /etc/telegraf/telegraf.conf run:

systemctl enable telegraf
systemctl start telegraf

To see logs, run

journalctl -u telegraf -f

Note that you can add more than one [[inputs.exec]] stanza.

Temperature monitoring

The raspberry pi has a built-in temperature sensor; you can collect data from it by adding an inputs.exec entry, like so:

[[inputs.exec]]
  command="/root/rpiTemp.sh"
  interval="5s"
  name_suffix="_temperature"
  data_format="json"

This will collect the current temperature in C every 5 seconds.

Asterisk node status monitoring

To get the node status, add an entry like this:

[[inputs.exec]]
  command="/root/asterisk_status.sh 44068"
  interval="3s"
  name_suffix="_status_44068"
  data_format="json"

Change 44068 to the appropriate node number, of course!

If you have more than one node you'll want to add an entry for each one.

Astersik node statistics monitoring

Not all statistics are useful, but I've tried to extract the ones that are. Add something like this:

[[inputs.exec]]
  command="/root/asterisk_stats.sh 46516"
  interval="45s"
  name_suffix="_stats_46516"
  data_format="json"

Change 46516 to your node number.

If you have more than one node you'll want to add an entry for each one

Rigrunner 4005i monitoring

If you randomly happen to have a rigrunner 4005i you can gather stats from that by modifying getRigRunnerStats.py with the correct URL, username, and password, then add a stanza like this one:

[[inputs.exec]]
  command="/usr/bin/python2.7 /root/getRigRunnerStats.py"
  interval="3s"
  name_suffix="_rigrunner"
  data_format="json"

Note that you'll need to easy_install requests and easy_install xmltodict for the script to work. Test it by running it directly first.