Introduction Network Engineers use the OpenDaylight (ODL) platform to craft, deploy and manage interesting virtual network services. Internet Service Providers, Cloud Service Providers, Data Center Engineers and Academics use ODL to address the...
The Amazon Web Services (AWS) Elasticsearch service provides GROUP BY operations via the aggregations, or AGGS, Application Programming Interface (API). GROUP BY and AGGS operations provide syntax to collapse rows with similar values into summary...
Operational document stores require backups for disaster recovery and data migration. Elasticsearch uses the term snapshot for their backups. Amazon Web Services (AWS) provides a fully managed Elasticsearch service that includes both automatic...
Elastic Architects designed the distributed Elasticsearch platform to follow NoSql principles. In the traditional Relational Database Management System (RDBMS) world, SQL databases use GROUP BY syntax to group rows with similar values into...
In this HOWTO, I will describe the process to connect an Ubuntu EC2 instance to the Amazon Web Services (AWS) provided Elasticsearch Service via the boto3 Python library. This blog updates my incredibly popular original post on this topic which...
This blog post describes how to configure Flask to emit form data to your own personal Gmail account. You don't need to use Gmail, in fact, you can configure Flask to send data to any email account you have access to. This architecture uses...
InfluxDB provides an exciting Time Series database with tons of industry momentum and enthusiasm behind it. InfluxData, the parent company that distributes the product overhauled the classic InfluxDB service with their new InfluxDB 2.0 offering....
Flask, Lambda, API Gateway, IAM and S3 enable massively scalable web database applications. Flask provides a simple, Pythonic Model View Controller (MVC) framework to develop the application logic. Lambda and API Gateway provide pay-per-use...
I deployed my first web database application back in 2002 thanks to the seminal O'Reilly book Web Database Applications with PHP and Mysql by David Lane and Hugh E. Williams. In the past sixteen years, the industry developed tons of frameworks...
Introduction OpenDaylight allows cloud engineers to programmatically deploy, configure and control virtual network services. As written on the OpenDaylight website, ODL helps Internet Service Providers, Academics and Cloud Service Providers to...
Introduction In this HOWTO, I will demonstrate a very quick and dirty method to transcribe customer service voicemails to text and emit the text to an Elasticsearch NoSQL document store. Once in Elasticsearch, you can search the voicemails for...
Introduction OpenDaylight provides a Software Defined Network (SDN) controller that allows network engineers to programmatically direct network services via a Representational state transfer (REST) Application Programming Interface (API). When I...
Part Two of this HOWTO demonstrates how to secure your S3 hosted website with HTTPS. If you haven't completed part one yet, be sure to click here. Once you complete this HOWTO, you will have a secure website, that Google approves, as seen in the...
This HOWTO demonstrates how to secure your Simple Storage Service (S3) hosted website via Hypertext Transfer Protocol Secure (HTTPS). While the S3 Representational State Transfer (REST) enpoint supports native HTTPS, an S3 bucket configured to...
In this HOWTO, I will demonstrate how to easily integrate the Google reCAPTCHA service into a Flask web application using Flask-WTF. The following cartoon depicts the end result. A Flask application server provides a simple (beautified) survey to...
In this HOWTO, we expand upon the simple Elasticsearch proxy we deployed in our first Lambda tutorial. In that tutorial, we showed you how to create a proxy in front of the AWS Elasticsearch service using a Lambda function and an API Gateway. We...
Introduction Last month, I followed the example of Full Stack Python and migrated this blog from Wordpress to Amazon Web Services (AWS) Simple Storage Service (S3). The S3 hosting approach gives me the following features: Global caching via...
All production databases require backups. The AWS Elasticsearch documentation states: Amazon Elasticsearch Service (Amazon ES) takes daily automated snapshots of the primary index shards in an Amazon ES domain... However, you must contact the AWS...
The RabbitMQ website provides instructions on how to install the service on CentOS and Ubuntu Elastic Compute Cloud (EC2) instances. While the Amazon Linux distro uses CentOS as a base, it is different enough to make installing RabbitMQ tricky...
The Python Elasticsearch Domain Specific Language (DSL) lets you create models via Python objects. Take a look at the model Elastic creates in their persistence example. #!/usr/bin/env python # persist.py from datetime import datetime from...
Amazon Web Services' (AWS) Lambda provides a serverless architecture framework for your web applications. You deploy your application to Lambda, attach an API Gateway and then call your new service from anywhere on the web. Amazon takes care of...
Flask-WTForms helps us create and use web forms with simple Python models. WTForms takes care of the tedious, boring and necessary security required when we want to use data submitted to our web app via a user on the Internet. WTForms makes data...
Welcome to the fifth part of this HOWTO, where we will call a remote web service to locate our test takers. Once you complete this HOWTO, you will have implemented the following architecture: To recap what we’ve done so far: Part One: Deploy an...
In HOWTO-1, we deployed an Amazon Web Service (AWS) Elasticsearch domain and connected to it via a combination of Identity and Access Management (IAM) roles, IAM profiles and the Boto library. In HOWTO-2 we deployed a Flask web server that...
In this tutorial you will: Connect a Flask server to the Bootstrap service Create a trivial Jinja2 template for a Quiz form Use Bootstrap to validate forms on the client side Use a Flask "flash" message to validate forms on the server side Let's...