Posts published under the DevOps account are collective contributions by the dbi services DevOps consultants. The practice covers Kubernetes and container platforms, CI/CD toolchains, and infrastructure automation with Ansible and Terraform, including the YaK framework for multi-cloud deployments, helping organizations make their infrastructure reproducible, scalable, and efficient.
After the deployment step with Terraform and the configuration/installation with Ansible, we will continue the installation of our Cloudera cluster with Cloudera Manager. By following the below steps you will see how to install CDH on our hosts using Cloudera Manager. Connection First, Login to Cloudera manager URL. When you connect to C.M for the first time, you need to…
In this part of the blog posts series, we will show how ansible helps us to configure our cluster and install all pre-requisite needed for Cloudera Manager. Ansible is one of the most important automation tools currently. Ansible will help us to configure all nodes for a manual installation using Cloudera Manager. Our playbook will contain the following roles: cm_repo:…
Deploying a Cloudera distribution of Hadoop automatically is very interesting in terms of time-saving. Infrastructure as Code tools such as Ansible, Puppet, Chef, Terraform, allow now to provision, manage and deploy configuration for large clusters. In this blog posts series, we will see how to deploy and install a CDH cluster with Terraform and Ansible in the Azure cloud. The…
Here are some fresh personal impressions from the “Ansible Automates Zurich” half day event organized by redhat. There was a overwhelming interest for this event. About 200 people filled the room and there were many more on the waiting list. The event started with a networking lunch. My impression was, that the visitors were not only interested in the food,…
In this blog post, we will see how to manage Oracle Public Cloud Big Data service Compute Edition with REST API. Scheduling the start/stop/restart of a metered PaaS in the Oracle Cloud can be interesting for managing efficiently the consumption of your cloud credits. We should first have a look at the official documentation so as to understand what the API is composed…
In this blog post, we will see how to create a Big Data cluster through the Oracle Cloud Services. If you want more details about the Oracle Big Data cloud services offering, you can refer to my previous blog Introduction to Oracle Big Data. First, you need to create your trial account through the following link: https://cloud.oracle.com/tryit. Note that, when…
Since few years, Oracle decided to move forward in the Big Data area, as their main competitor. The goal of this blog post is to explain you, how the Oracle Big Data offering is composed. As the Oracle Big Data offering is continuously improving, I’m always open to your feedback 🙂 Oracle Big Data offering is split in 2 parts:…
A lot of possibilities exist to migrate MySQL to MariaDB. In this blog I would like to show a scenario where I migrate MySQL 5.7.19 with a lot of databases to MariaDB 10.2.7, which is on a different host. The tools I am using are mydumper/myloader and ncat. Please be aware that mydumper does not come out of the box.…
In this blog post, we will show how to install MongoDB on Windows. Download installer First go to the MongoDB download center https://www.mongodb.com/download-center#community. According to your Windows server version, click on the green buton and download the installer (.msi). In our example, we will use the MongoDB Community version for Windows Server 2008 and later. Important: MongoDB is available exclusively…
This blog post is about the configuration of Apache Cassandra for running a cluster of 3 instances on a single host. Basically C* is not really build to run in a multi instances environment, but for many cases and reasons you might run a C* cluster on a single server. The principal reason is for tests cases. Context The objective…
Apache Cassandra is one of the most popular NoSQL databases http://db-engines.com/en/ranking. It is used by many big companies as Facebook, Netflix and many others. Initially the project was initiated by Facebook. In combination with Google BigTable and Amazon DynamoDB, they developed Cassandra. Actually, Cassandra is developed and maintained by the Apache foundation for the community version and by DataStax for…
Recently I exported an Oracle Virtual Box VM as an “.ova” file. When the file was imported again I faced issues with the network devices inside the VM. This post is about what I experienced and how I resolved it. In my example I have two networks devices configured for the VM in the Virtual Box: When I logged in…
