ookla-speedtest on k8s

Dockerfile

FROM centos:8

LABEL MAINTAINER Tchello Mello <tchello.mello@gmail.com>

# install main packages:
RUN yum -y update && \
    yum -y install wget python38 && \
    wget https://bintray.com/ookla/rhel/rpm -O /etc/yum.repos.d/bintray-ookla-rhel.repo && \
    yum -y install speedtest && \
    yum clean all

ADD start.py /
RUN chmod +x /start.py
RUN ln -sf /proc/1/fd/1  /tmp/speedtest.out

CMD ["/start.py"]

ookla-speedtest.yml

---
apiVersion: batch/v1beta1
kind: CronJob
metadata:
  name: ookla-speedtest-cronjob
spec:
  schedule: "37 * * * *"
  concurrencyPolicy: Replace
  successfulJobsHistoryLimit: 16
  failedJobsHistoryLimit: 5
  jobTemplate:
    spec:
      template:
        metadata:
          labels:
            jobgroup: ookla-speedtest
        spec:
          restartPolicy: OnFailure
          containers:
            - name: ookla-speedtest
              image: registry.tatu.home/tekton/ookla-speedtest:latest
              imagePullPolicy: Always
              env:
                - name: DOWNLOAD_THRESHOLD
                  value: "500"

start.py

#!/usr/bin/env python3
import os

import smtplib
from subprocess import Popen, PIPE
from email.message import EmailMessage

DOWNLOAD_THRESHOLD = float(os.environ.get('DOWNLOAD_THRESHOLD', 600))
SMTP_PORT = os.environ.get('SMTP_PORT', 25)
SMTP_SERVER = os.environ.get('SMTP_SERVER', 'smtp.example.home')
EMAIL_FROM = os.environ.get('EMAIL_FROM', 'me@email.com')
EMAIL_TO = os.environ.get('EMAIL_TO', 'me@email.com')
DEBUG = os.environ.get('DEBUG', 'False')

SPEEDTEST_OUTPUT = '/tmp/speedtest.out'

msg = EmailMessage()
msg['From'] = EMAIL_FROM
msg['To'] = EMAIL_TO
msg['Subject'] = '[Toca K8S] - Speedtest Notification by Ookla'

# run command
p = Popen(
        ["/usr/bin/speedtest", '--accept-license', '--progress', 'no'],
        stdout=PIPE, stderr=PIPE, universal_newlines=True
)

stdout, stderr = p.communicate()

for line in stdout.splitlines():
    if "Download:" in line:
        try:
            download = float(line.split(' (')[0].replace(' ','').replace('Download:','').replace('Mbps',''))

            if download >= DOWNLOAD_THRESHOLD:
                server = smtplib.SMTP(SMTP_SERVER, SMTP_PORT)
                server.ehlo()

                msg.set_content(stdout)
                server.send_message(msg)

            # save output to file
            # print to stdout
            with open(SPEEDTEST_OUTPUT, 'w') as fd:
                fd.write(stdout)
        except:
            raise