0 Getting Started on Monitoring with Prometheus and Grafana
Monitoring sounds like a terribly useful thing to do. And in many situations it is of course. However, rather than…
Author Lucas Jellema
Lucas Jellema
Lucas Jellema, active in IT (and with Oracle) since 1994. Oracle ACE Director and Oracle Developer Champion. Solution architect and developer on diverse areas including SQL, JavaScript, Kubernetes & Docker, Machine Learning, Java, SOA and microservices, events in various shapes and forms and many other things. Author of the Oracle Press book Oracle SOA Suite 12c Handbook. Frequent presenter on user groups and community events and conferences such as JavaOne, Oracle Code, CodeOne, NLJUG JFall and Oracle OpenWorld.
0 Generic Docker container image for running and dynamically reloading an Oracle JET application from a Git repository
This article introduces a Docker Container Image that runs an Oracle JET application from a Git repository and is capable…
0 Generic Docker Container Image for running and live reloading a Node application based on a GitHub Repo
My desire: find a way to run a Node application from a Git(Hub) repository using a generic Docker container and…
0 Running Elastic Stack (ES and Kibana) on Oracle Container Cloud
It should be simple and in the end it was relatively simple – but still I was struggling a little…
0 First Steps with Prometheus and Grafana on Kubernetes on Windows
Preparation: before I started with Prometheus, I installed VirtualBox, Minikube with Tiller on my Windows 10 laptop – as described…
0 Running Kubernetes 1.10 using MiniKube on Windows 10 (adding kubectl and helm/tiller)
Some quick steps to get Minikube for K8S 1.10 up and running on Windows 10 (presuming VirtualBox has already been…
0 Another Taste of India– ODevCYatra 2018
July 2018 saw another edition of the Oracle Developers’ tour through India, called Yatra. In just over two weeks, seven…
0 Presenting at ODevCYatra 2018 in Hyderabad, Pune and Mumbai (11, 13 and 14 July)
In 2013 I have participated in the OTN Yatra – a conference tour of six cities in India (). This…
0 Running Istio on Oracle Kubernetes Engine–the managed Kubernetes Cloud Service
In a recent post, I introduced the managed Oracle Cloud Service for Kubernetes, the Oracle Kubernetes Engine (OKE): https://technology.amis.nl/2018/05/25/first-steps-with-oracle-kubernetes-engine-the-managed-kubernetes-cloud-service/. A…
2 First steps with Oracle Kubernetes Engine–the managed Kubernetes Cloud Service
Oracle recently (May 2018) launched its Managed Kubernetes Cloud Service (OKE – Oracle Kubernetes Engine) – see for example this…
0 Running Kafka, KSQL and the Confluent Open Source Platform 4.x using Docker Compose on a Windows machine
For conducting some experiments and preparing several demonstrations I needed a locally running Kafka Cluster (of a recent release) in…
0 Simple CQRS – Tweets to Apache Kafka to Elastic Search Index using a little Node code
Put simply – CQRS (Command Query Responsibility Segregation) is an architecture pattern that recognizes the fact that it may be…
1 Rapidly spinning up a VM with Ubuntu and Docker–on my Windows machine using Vagrant and VirtualBox
I have a Windows laptop. And of course I want to work with Docker containers. Using the Docker Quickstart Terminal…
2 Get going with KSQL on Kubernetes
This article describes how to quickly get going with KSQL on Kubernetes. KSQL is Confuent’s ‘continuous streaming query language’. It…
16 15 Minutes to get a Kafka Cluster running on Kubernetes – and start producing and consuming from a Node application
For workshop I will present on microservices and communication patterns I need attendees to have their own local Kafka Cluster.…
1 Remote and Programmatic Manipulation of Docker Containers from a Node application using Dockerode
In previous articles, I have talked about using Docker Containers in smart testing strategies by creating a container image that…
0 Quickly spinning up Docker Containers with baseline Oracle Database Setup – for performing automated tests
Here is a procedure for running an Oracle Database, preparing a baseline in objects (tables, stored procedures) and data, creating…
3 First steps with Docker Checkpoint – to create and restore snapshots of running containers
Docker Containers can be stopped and started again. Changes made to the file system in a running container will survive…
0 Handle a GitHub Push Event from a Web Hook Trigger in a Node application
My requirement in this case: a push of one or more commits to a GitHub repository need to trigger a…
2 Node & Express application to proxy HTTP requests – simply forwarding the response to the original caller
The requirement is simple: a Node JS application that receives HTTP requests and forwards (some of) them to other hosts…