Monthly Archives: September 2017

kubeadm-highavailiability – kubernetes high availiability deployment based on kubeadm, for Kubernetes version 1.7.x/1.6.x This operation instruction is for version v1.7.x kubernetes cluster deployment architecture summary category detail deployment architecture kubernetes components: kube-apiserver: exposes the Kubernetes API. It is the front-end for the Kubernetes control plane. It is designed to scale horizontally – that is, it… Read More »

Configuring HDFS High availability using Cloudera Manager One of the main advantages of Hadoop 2 is its High availability capability through adding a standby NameNode and Resource Manager. Cloudera Hadoop default installation is not Highly available and this should be configured after the installation. I used CDH5 with Cloudera manager which automates most of the… Read More »

A recent analysis showed that there are at least 30.000 instances of MongoDB left unsecured on the Internet. That means than anyone can access it without any kind of authentication. After some time, I’ve found my own way of setting up a basic MongoDB authentication, so I’ll post the details on how to do it here. So let’s… Read More »