How to send cpu, disk and memory percentage to InfluxDB (InfluxData) with callbacks (using psutil for operating system data)

influx_client_basic.py

"""
A python example regarding how to send CPU, disk and memory usage percentages to InfluxDB, using callbacks and psutil
(using psutil for operating system data)

There is also a basic query to plot the data on an Influx dashboard.

pip3 install influxdb-client psutil


On Influx, then you can query "memory", for example, with

from(bucket: "xxx")
  |> range(start: v.timeRangeStart, stop: v.timeRangeStop)
  |> filter(fn: (r) => r["_measurement"] == "my_business_domain")
  |> filter(fn: (r) => r["server"] == "local")
  |> filter(fn: (r) => r["_field"] == "memory")
"""

import time
import psutil

import influxdb_client
from influxdb_client.client.write_api import SYNCHRONOUS


def cpu_value_get():
    return psutil.cpu_percent(interval=1)


def disk_value_get():
    return psutil.disk_usage('/').percent


def memory_value_get():
    return psutil.virtual_memory().percent


def field_point_get(custom_measurement, custom_tag, field, _callback):
	return influxdb_client.Point(custom_measurement).tag(custom_tag['name'], custom_tag['value']).field(field, _callback())


def main():
	while True:
		point = {
			'cpu': field_point_get(custom_measurement, custom_tag, 'cpu', cpu_value_get),
			'disk': field_point_get(custom_measurement, custom_tag, 'disk', disk_value_get),
			'memory': field_point_get(custom_measurement, custom_tag, 'memory', memory_value_get)
		}

		write_api.write(bucket=bucket, org=org, record=point['cpu'])
		write_api.write(bucket=bucket, org=org, record=point['disk'])
		write_api.write(bucket=bucket, org=org, record=point['memory'])

		time.sleep(1)


#
# customize:
#    endpoint, org, token, bucket
#    custom_measurement, custom_tag
#

endpoint = 'https://eu-central-1-1.aws.cloud2.influxdata.com'
org = 'xxx@xxx.xx'
token = 'xxx'
bucket = "xxx"

custom_measurement = 'my_business_domain'
custom_tag = {'name': 'server', 'value': 'local'}

client = influxdb_client.InfluxDBClient(url=endpoint, token=token, org=org)

write_api = client.write_api(write_options=SYNCHRONOUS)

if __name__ == "__main__":
    main()