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Using Grafana to monitor your Raspberry Pi 3, setup a simple dashboard that will show you the stats of your Raspberry Pi.
Pursuing my undergraduate degree in Electronics and Telecommunication. With a programming experience of 5 years I have contributed to open source from the very start. I have a keen interest in evolving technology and love to get a hands on experience with them. My main goal is to demystify technology for everyone.
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One of the interesting things one can do with their RaspberryPi is setting up a monitoring dashboard. For this we use Grafana (a dashboard service), InfluxDB (the database) and collectd (a metric collection service).
Down to your basics, update and upgrade your system first
sudo apt update && sudo apt upgrade
Installing InfluxDB
sudo apt install influxdb influxdb-client
sudo nano /etc/influxdb/influxdb.conf
The values of the directories are going to be changed to tmp so that values are stored in RAM.
End result should look like this
[meta]
dir = "/tmp/influxdb/meta"
# ABRIDGED
[data]
dir = "/tmp/influxdb/data"
wal-dir = "/tmp/influxdb/wal"
Now we will bind our data to localhost only.
[http]
enabled = true
bind-address = "127.0.0.1:8086"
Changing collectd configuration
[[collectd]]
enabled = true
port = 25826
database = "collectd_db"
typesdb = "/usr/share/collectd/types.db"
Done! Now we will run the following code to enable and start InfluxDB
sudo systemctl enable influxdb
sudo systemctl start influxdb
If you now run influx in your terminal you should see it work!
Run these commands
CREATE DATABASE collectd_db
CREATE RETENTION POLICY "twentyfour_hours" ON "collectd_db" DURATION 24h REPLICATION 1 DEFAULT
"twentyfour_hours is the name of the policy, should you want to delete it later. the REPLICATION directive is only relevant for clustered systems but must be set nonetheless. Here, we only want one copy of our data.
Press CTRL + D to exit the influx prompt, and start with the next step."
Installing collectd -
sudo apt install collectd collectd-utils
Once again, open the configuration file /etc/collectd/collectd.conf and ensure the following settings are not commented out:
(Usually they aren't commented out but just check)
Hostname "microserver314"
Interval 60
LoadPlugin syslog
LoadPlugin cpu
LoadPlugin cpufreq
LoadPlugin df
LoadPlugin disk
LoadPlugin entropy
LoadPlugin interface
LoadPlugin irq
LoadPlugin load
LoadPlugin memory
LoadPlugin network
LoadPlugin processes
LoadPlugin swap
LoadPlugin thermal
LoadPlugin users
What does all this mean?? The individual plugin report:
Now that the plugins are loaded, we must configure some of them individually:
<Plugin df>
# This will ignore uninteresting file systems
# to keep our DB from cluttering
FSType rootfs
FSType sysfs
FSType proc
FSType devpts
FSType tmpfs
FSType fusectl
FSType cgroup
Ignore Selected true
</Plugin>
<Plugin "syslog">
# Skip messages with info label
LogLevel "warning"
</Plugin>
Finally, we must tell collectd where to write all the data. We will set it to the host and port of InfluxDB’s collectd listener:
<Plugin "network">
Server "127.0.0.1" "25826"
</Plugin>
Finally making it work!
sudo systemctl enable collectd
sudo systemctl start collectd
influxdb
USE collectd_db
SELECT * FROM processes_value WHERE ("type_instance" = 'sleeping') ORDER BY time DESC LIMIT 1
If you get an output you are good to go!
Finally we install the dashboard To add the Grafana APT key to your Raspberry Pi’s keychain, run the following command
curl https://packages.grafana.com/gpg.key | gpg --dearmor | sudo tee /usr/share/keyrings/grafana-archive-keyrings.gpg >/dev/null
With the key added, we can now safely add the Grafana repository to our Pi’s list of packages sources.
Use the following command on your Raspberry Pi to add the repository to the list.
echo "deb [signed-by=/usr/share/keyrings/grafana-archive-keyrings.gpg] https://packages.grafana.com/oss/deb stable main" | sudo tee /etc/apt/sources.list.d/grafana.list
Finally updating our Pi
sudo apt update
And installing it
sudo apt install grafana
Enabling and starting the Grafana service
sudo systemctl enable grafana-server
sudo systemctl start grafana-server
Now open Grafana using your host IP address and on port 3000. The password and username for the dashboard is admin.
Note - Do not like port 3000 or another service is utilizing it? Change the port in /etc/grafana/grafana.ini you have to change in /usr/share/grafana/conf/defaults.ini.
Remove the semicolon in /usr/share/grafana/conf/defaults.ini and chance the port! You're good to go!
Done! Now just save and test! If it works you are 95% done!
Head over to the + sign and Import this and you shall now be seeing an output!