Python Smtplib Tutorial – howto send HTML EMAIL with Python

Posted on October 28, 2025 by Marco Antonio Carcano

The Python Smtplib Tutorial - howto send HTML EMAIL with Python is explains how to send HTML emails using SMTP, including auth, SMTP with TLS and SMTPS.

After introducing Python smtplib, the post provides an hands-on example showing how to add HTML email notification to an existing scirpt. The provided code supports every kind of SMTP connection - SMTP, SMTP with startTLS and SMTPS.

This post completes the trilogy we started with the JINJA2 With Python Tutorial JINJA Ansible HowTo and Python Argparse Tutorial - Argparse HowTo posts.

Python Argparse Tutorial – Argparse HowTo

Posted on October 22, 2025October 28, 2025 by Marco Antonio Carcano

The Python Argparse Tutorial - Argparse HowTo post provides a practical example of how to parse command line parameters and options using the argparse module.

Knowing how to add command line paramenters and options to Python scripts is a must-have skill, since it enables them to better adapt to customers' needs, allowing them to enable or disable specific script features, or providing information on the operational environment structure, such as specific directory paths different from the default ones.

As a professional, you are supposed to always add command line arguments support to your scripts, so to make them always fit to the user-specific scenarios.

JINJA2 With Python Tutorial JINJA Ansible Howto

Posted on December 17, 2024October 22, 2025 by Marco Antonio Carcano

JINJA2 is a powerful yet easy to use templating engine that enables easily generating documents on the fly blending one or more objects with a template.

Since the syntax is heavily inspired by Django and Python, JINJA2 is not only commonly used inside Python scripts: it is very often exploited by Ansible, for example when generating configuration files on the fly.

In "JINJA2 With Python Tutorial JINJA Ansible Howto" post we will learn all the must know about JINJA2, and experiment with it by writing a real-life JINJA2 template file, rendering it by merging it with a JSON document using a custom Python script and an Ansible playbook.

Kubernetes Prometheus And Grafana With kube-prometheus-stack

Posted on November 27, 2024November 30, 2024 by Marco Antonio Carcano

When using Kubernetes, it is mandatory to collect performance metrics so as to be able to plot them into meaningful graphs (a must-have during troubleshooting), visualize alerts in dashboards and get email notification of critical events. The best practice is to deploy Prometheus, Grafana and Alertmanager.

In the "Kubernetes Prometheus And Grafana With kube-prometheus-stack" post we see how to easily deploy and setup these three amazing components to setup a full featured alerting and performance monitoring solution.

The post also shows how to deploy additional Grafana Dashboards and how to deploy custom Prometheus rules to trigger application specific alerts.

NetApp Astra Trident Tutorial NFS Kubernetes CSI HowTo

Posted on November 20, 2024April 2, 2025 by Marco Antonio Carcano

NetApp is certainly one of the most popular storage brands, with quite a big portfolio of cost-effective storage solutions. With the spreading of Kubernetes, they developed Trident, their own Container Storage Interface (CSI) compatible storage orchestrator.

In the "NetApp Astra Trident Tutorial NFS Kubernetes CSI HowTo" we see how easy it is to deploy and set it up.

RKE2 Tutorial – RKE2 Howto On Oracle Linux 9

Posted on November 6, 2024November 20, 2024 by Marco Antonio Carcano

Kubernetes is certainly the most popular and probably the best solution for orchestrating containerized workloads, but maintaining its vanilla distribution is certainly a challenge, so you must carefully guess pros and cons in terms of maintenance costs and operational risks.

A very cost effective and interesting alternative to running the vanilla Kubernetes is the "Rancher Kubernetes Engine 2" (RKE2), a certified Kubernetes distribution focused on security to adhere to the U.S. government’s compliance requirement. RKE2, besides providing a reliable Kubernetes distribution, smoothly integrates with Rancher.

In the "RKE2 Tutorial - RKE2 Howto On Oracle Linux 9" post we see it in action, installing a highly available multi-master Kubernetes cluster, exposing the default ingress controller using MetalLB for providing Load Balancing services.