Installing Kubernetes on CentOS 7
This article explains how to install a Kubernetes cluster. I will dive into what each step does so you can build a thorough understanding of what is going on. […]
LXD: The Missing Piece
LXD stands for Linux Container Daemon. Yet another container technology. But LXD is very different. It stands apart from the pack. It is not necessarily better nor much faster nor more secure! But it resolves an issue that other containers doesn't. Many of us moved too fast from traditional Virtual Machines to Application containers because [...]
Monitoring a production Hadoop cluster with Kubernetes
Monitoring a production grade Hadoop cluster is a real challenge and needs to be constantly evolving. The software we use today is based on Nagios. Very efficient when it comes to the simplest surveillance, it is not able to meet the need for a more complex verification. In this article, we will propose an architecture [...]
Microsoft introduces Cloud Native Application Bundles
At DockerCon EU 2018 in Barcelona, Matt Butcher, Principal Engineer at Microsoft and inventor of Helm, introduced CNAB, Cloud Native Application Bundles, a packaging format for distributed applications, along with Duffle, a CLI tool to run these bundles. […]
Jumbo, the Hadoop cluster bootstrapper
Introducing Jumbo, a Hadoop cluster bootstrapper for developers. […]
KVM machines for Vagrant on Archlinux
Vagrant supports different providers to manage virtualization. In a Linux environment, you can dramatically improve VM performance by using the libvirt provider and the KVM hypervisor. […]
A CoreOS development cluster with Vagrant and VirtualBox
Following CoreOS’s instructions on how to set up a development environment in VirtualBox did not work out well for me. Here are the steps I followed to get Container Linux up and running with Vagrant. […]
Data Lake ingestion best practices
Creating a Data Lake requires rigor and experience. Here are some good practices around data ingestion both for batch and stream architectures that we recommend and implement with our customers. […]
Ambari – How to blueprint
As infrastructure engineers at Adaltas, we deploy Hadoop clusters. A lot of them. Let’s see how to automate this process with REST requests. […]
Hive Metastore HA with DBTokenStore: Failed to initialize master key
This article describes my little adventure around a startup error with the Hive Metastore. It shall be reproducable with any secure installation, meaning with Kerberos, with high availability enabled and with the storage of the delegation token in a database. The version of Hive is the 1.2 packaged inside the Hortonworks 2.4.2 distribution. Storage for [...]