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Bridging the DBnomics Swagger/OpenAPI schema with GraphQL
Categories: DevOps & SRE, Front End | Tags: Data Engineering, GraphQL, JAMstack, JavaScript, REST, Node.js, Schema
While redacting a long and fastidious document today, I came across DBnomics, an open platform federating economic datasets. Browsing its website and APIs, I found their OpenAPI schema (aka Swagger…
By David WORMS
Apr 8, 2021
Kerberos and Spnego authentication on Windows with Firefox
Categories: Cyber Security | Tags: Firefox, FreeIPA, HTTP, Kerberos
In Greek mythology, Kerberos, also called Cerberus, guards the gates of the Underworld to prevent the dead from leaving. He is commonly described as a three-headed dog, a serpent’s tail, mane of…
By David WORMS
Nov 4, 2019
Multihoming on Hadoop
Categories: Infrastructure | Tags: HDFS, Kerberos, Network, Hadoop
Multihoming, which means having multiple networks attached to one node, is one of the main components to manage the heterogeneous network usage of an Apache Hadoop cluster. This article is an…
Mar 5, 2019
Scaling massive, real-time data pipelines with Go
Categories: Open Source Summit Europe 2017, Learning | Tags: Algorithm, Data structures, Go Lang, Network, Pipeline, Protocols
Last week at the Open Source Summit in Prague, Jean de Klerk held a talk called Scaling massive, real-time data pipelines with Go. This article goes over the main points of the talk, detailing the…
Nov 21, 2017
Kubernetes 1.8
Categories: Containers Orchestration, Open Source Summit Europe 2017 | Tags: containerd, CRD, Network, OCI, RBAC, Kubernetes, Release and features
The 1.8 release of Kubernetes brings a lot of new things. With 2500+ pull request, 2000+ commits, 400+ commiters, Kubernetes added 39 new features in this version. This is the richest release in terms…
Oct 24, 2017
Exposing Kafka on two different networks
Categories: Infrastructure | Tags: Kafka, Cloudera, Cyber Security, Network, VLAN, CDH
A Big Data setup usually requires you to have multiple networking interface, let’s see how to set up Kafka on more than one of them. Kafka is a open-source stream processing software platform system…
Jul 22, 2017
Network Namespace without Docker
Categories: Hack | Tags: DNS, Linux, Namespaces, Network, VLAN, Docker
Let’s imagine the following use case: I am connected to several networks (wlan0, eth0, usb0). I want to choose which network I’m gonna use when I launch apps. My app doesn’t allow me to choose a…
Jul 6, 2016
Oracle to Apache Hive with the Oracle SQL Connector
Categories: Business Intelligence | Tags: HDFS, Hive, Network, Oracle
In a previous article published last week, I introduced the choices available to connect Oracle and Hadoop. In a follow up article, I covered the Oracle SQL Connector, its installation and integration…
By David WORMS
May 27, 2013
Hadoop development cluster of virtual machines with static IP using VirtualBox
Categories: Infrastructure | Tags: Ambari, Cloudera, Hortonworks, Network, Red Hat, VirtualBox, VM, VMware
A few days ago, I explained how to set up a cluster of virtual machine with static IPsand Internet access suitable to host your Hadoop cluster locally for development. At the time I made use of VMWare…
By David WORMS
Mar 14, 2013
Virtual machines with static IP for your Hadoop development cluster
Categories: Infrastructure | Tags: Ambari, Cloudera, Hortonworks, Network, Red Hat, VirtualBox, VM, VMware
While I am about to install and test Ambari, this article is the occasion to illustrate how I set up my development environment with multiple virtual machines. Ambari, the deployment and monitoring…
By David WORMS
Feb 27, 2013
OS module on steroids with the SIGAR Node binding
Categories: Node.js | Tags: C++, CPU, File system, Metrics, Monitoring, Network
Today we are announcing the first release of the Node binding to the SIGAR library. Visit the project website or the source code repository on GitHub. SIGAR is a cross platform interface for gathering…
By David WORMS
Jan 11, 2012