Using ElasticSearch, Fluentd and Kibana (for log aggregation)

Marc Lameriks

In my last article I described how I installed ElasticSearch, Fluentd and Kibana (EFK). [https://technology.amis.nl/2019/04/23/using-vagrant-and-shell-scripts-to-further-automate-setting-up-my-demo-environment-from-scratch-including-elasticsearch-fluentd-and-kibana-efk-within-minikube/] In this article I will dive into using ElasticSearch, Fluentd and Kibana. Besides log aggregation (getting log information available at a centralized location), I will also describe how I created some visualizations within a dashboard. […]

The Pipelined Pancake Party – demonstrating the Power of Parallelization and Pipelining in JavaScript with Promises and Asynchronous Generators

Lucas Jellema

This article is an attempt to demonstrate the performance gains – and programming elegance – that is at our disposal with the advent of asynchronous generators in ES 2018 (JavaScript), for example in Node 10 and later. With asynchronous generators and Promises, we can implement parallel, asynchronous and pipelined processing […]

Using Vagrant and shell scripts to further automate setting up my demo environment from scratch, including ElasticSearch, Fluentd and Kibana (EFK) within Minikube

Marc Lameriks

For training and demo purposes, on my windows laptop, I needed an environment with a guest Operating System, Docker and Minikube available within an Oracle VirtualBox appliance. So, in a series of articles up till now, I described the following: The steps I took, to get Docker and Minikube (using […]

Running Apache Kafka on Minikube

Lucas Jellema

I frequently want to demonstrate the working of Apache Kafka and/or provide colleagues and other audiences with an environment for a workshop that involves Apache Kafka. I have been struggling to find  a good way to get Kafka to function properly on Minikube – the standalone, single node Kubernetes cluster […]

Using Helm, the package manager for Kubernetes, to install two versions of a RESTful Web Service Spring Boot application within Minikube

Marc Lameriks 3

In my last article I described how two versions of a RESTful Web Service Spring Boot application were used in Minikube, together with an external “Dockerized” MySQL database. [https://technology.amis.nl/2019/03/05/using-a-restful-web-service-spring-boot-application-in-minikube-together-with-an-external-dockerized-mysql-database/] In this article I will describe how you can use Helm, the package manager for Kubernetes, to install two versions of […]

What is Apache Drill and how to setup your Proof-of-Concept

Sam Vruggink 2

Apache Drill is a schema-free SQL query engine. Drill supports a variety of NoSQL databases and file systems, including HBase, MongoDB, MapR-DB, HDFS, MapR-FS, Amazon S3, Azure Blob Storage, Google Cloud Storage, Swift, NAS and local files. A single query can join data from multiple datastores. For example, you can […]

Using a RESTful Web Service Spring Boot application in Minikube, together with an external “Dockerized” MySQL database

Marc Lameriks 2

In a previous article, I talked about an environment, I prepared on my Windows laptop, with a guest Operating System, Docker and Minikube available within an Oracle VirtualBox appliance. [https://technology.amis.nl/2019/02/12/rapidly-spinning-up-a-vm-with-ubuntu-docker-and-minikube-using-the-vm-drivernone-option-on-my-windows-laptop-using-vagrant-and-oracle-virtualbox/] In another article I created two versions of a RESTful Web Service Spring Boot application, being a book service. With […]

InfluxDB V2.0 – Stack Implementation Proof of Concept

Sam Vruggink 2

This blogpost will give you detailed instructions and information regarding the InfluxDB stack. Since February 2019 InfluxDB now consists not only the database itself, but also Telegraf, Chronograf and Kapacitor. Later you’ll read about what every part of the stack does. 18-2-2019: Living on the bloody edge, do not run […]

Minikube on KVM on Linux Mint 19.1

Maarten Smeets

In a previous blog post I wrote about running Minikube on Windows. I ended with the suggestion that getting Minikube working might be much easier on Linux. Thus I installed Linux Mint (as dual-boot) on my laptop and gave it a shot. The steps I took to get it working […]

Enterprise Manager Convert to Cluster Database (RAC) fails without showing errors at Pre Configuration phase

Johan Buijser

Oracle Enterprise Manager Cloud Control 13c provides a wizard to convert a single-instance database to an Oracle RAC database. This requires the Oracle Database Lifecycle Management Pack for Enterprise Manager Cloud Control. When converting the database to a cluster database, after proving all the required details in the wizard,  a […]

Enterprise Manager DataGuard Add Standby Database fails without showing errors at Destination Preparation phase

Johan Buijser

Oracle Enterprise Manager Cloud Control 13c provides the Add Standby Database wizard to create a broker configuration that includes a primary database and one or more standby database. This requires the Oracle Database Lifecycle Management Pack for Enterprise Manager Cloud Control. When adding a Standby Database, after proving all the […]

Rapidly spinning up a VM with Ubuntu, Docker and Minikube (using the –vm-driver=none option) on my Windows laptop using Vagrant and Oracle VirtualBox

Marc Lameriks 5

For training and demo purposes, on my Windows laptop, I needed an environment with a guest Operating System, Docker and Minikube available within an Oracle VirtualBox appliance. In this article, I will share with you the steps I took, to get Docker and Minikube (using the –vm-driver=none option) installed on […]