Python. Export to Graphite (carbon) simultaneous connections (and other).

We have a small task: export number of a simultaneous connections to Graphite (carbon) and visualize it in the Grafana

We used https://github.com/benhoyt/graphyte and simple Python script to export to Graphite (Carbon-cache)

import graphyte
import time
import logging
import subprocess

try:
    graphyte.init('graphite.host', prefix='metric.prefix', port=2003, interval=10)
except Exception as e:
    logging.error(str(e))
    raise SystemExit

try:
    while True:
        command_value = subprocess.check_output("netstat -n | grep -e '11.169' -e '165.172' | grep -v -e '12.123.26.128' | grep -e 'ESTABLISHED' | wc -l", shell=True)
        command_int = int(command_value.decode())
        graphyte.send('metricname', command_int)
        #print(command_int)
        time.sleep(1)

except (KeyboardInterrupt, SystemExit):
    print(' - Ctrl-C pressed')
Code language: Python (python)

netstat -n | grep -e '11.169' -e '165.172' | grep -v -e '12.123.26.128' | grep -e 'ESTABLISHED' | wc -l
Code language: Bash (bash)

This command returns number of the current ESTABLISHED simultaneous connections to the IPs starting from ‘11.169’ and ‘165.172’ (like “mask”) and exept IP ‘12.123.26.128’