Cron, not as easy as expected?
Few days ago I was confronted with the situation that a refresh job failed. The job is supposed to run every Saturday morning at 07:00, but failed due a …
Tag: linux
Linux background process and redirecting the standard input, output and error stream
Often, I use a Linux shell script that executes several commands. Sometimes you don’t want to wait for a command to end and you want the next command to …
Creating a minimal container image for a Go application
How hard can it be – to create the smallest possible container image to run a Go application? It is not hard to create a container image that contains …
Update Go on Linux
It turned out to be a fairly small deal. For reference sake a brief write up of updating the Go runtime on my Ubuntu environment. Current version: go version …
Interacting with OCI Object Storage using Go SDK (first steps)
I am still fairly new at working with Go. I have the ambition of working with and perhaps even on several open source projects that all use Go as …
“You have to give a little… scripting for 12c+”
or Publishing a cleanup script for Oracle 12c+ At the moment I’m just for fun collecting Linux scripts from my direct colleagues. And while I was busy to think …
Run VS Code on Linux, in a container or just anywhere–work in a browser
My colleague pointed the open source code-server project to me. This project allows you to run Visual Studio Code just anywhere – and to develop on any device. He …
jq – Linux command line tool for interpreting and manipulating JSON documents
I am not the first to discover jq, or even to write about it. However, jq was such a valuable tool for me that I felt obliged to share …
Linux Shell Script – passing arguments to functions and returning and capturing results
Developing Linux Shell Scripts is just not the same as programming in modern programming language. At least to me, it still feels novel and at times a bit weird. …
Ultra fast, ultra small Kubernetes on Linux – K3S beating minikube
The easiest way I knew for running a local Kubernetes cluster was minikube. It installs like a breeze and creates a fresh clean cluster with minimal effort on my …
Getting started with Windows Subsystem for Linux, Ubuntu and Docker
Starting with a vanilla Windows 10 environment, it took just a few simple steps to get going with Linux on my Windows machine in the Windows Subsystem for Linux …
A DBA’s first steps in Jenkins
My Customer wanted an automated way to refresh an application database to a known state, to be done by non-technical personnel. As a DBA I know a lot of …
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 this deliberate stop and start cycle. Data in memory …
Create Debian VM with Docker Host using Vagrant–automatically include Guest Additions
A short and simple article. I needed a Debian VM that I could use as Docker host – to run on my Windows 10 laptop. I resorted to Vagrant. …
Get going with Node.js, npm and Vue.js 2 on Red Hat & Oracle Linux
A quick and rough guide on getting going with Node, npm and Vue.js 2 on a Enterprise Linux platform (Oracle Linux based on RedHat Linux) Install Node.JS on a …
Oracle OpenWorld 2016 – Engineered Systems – Announcing MiniCluster S7-2, Exadata SL and ODA X6-2-HA
In addition to offering infrastructure services from the cloud, Oracle continues to extend its line of engineered systems. The high end consists of SuperCluster and Exadata, ExaLogic and Exalytics …
Create and Run Docker Container with Node.js and Node Oracle DB Driver from Windows using Vagrant and VirtualBox
My objective: be able to very quickly run Node.js applications that can connect to an Oracle Database – with minimal disturbance of my laptop environment (Windows 7). The solution …
Reflections after Oracle OpenWorld 2015 – Infrastructure as a Service – and as a Product – on Compute, Linux, Private Cloud Machine, Storage, Network and more
If you want to be a cloud provider with a complete portfolio, that means you need to offer Infrastructure as a Service. That is where some cloud providers start(ed) …
Resources for JavaOne 2015 session: Java Developer Intro to Environment Management with Vagrant, Puppet, and Docker (BOF2817)
During JavaOne 2015, I present a Birds of Feather session (BOF 2817) on Docker for Java Developers – in combination with Vagrant and Puppet (and leveraging Virtual Box) (Monday …
Generate Docker Containerized Run Time and Design Time for Oracle StreamExplorer, Event Processor and JDeveloper using Vagrant, Puppet and VirtualBox
The objective of this article: prepare an environment for experimenting with Oracle StreamExplorer using two Docker containers inside a Linux VM running on my Windows laptop. And with the …
Simple Docker GUI for monitoring and managing containers and images – in combination with Vagrant and VirtualBox
I came across a simple Google Chrome Addon called Simple Docker GUI. It provide a GUI that allows for easy insight in and some management of Docker containers and …
Vagrant and Docker followed by Puppet to provision complex environments
The Docker container build process has some limitations. The Docker file can quickly become unwieldy. Besides, by and large the Docker file has us execution fairly low level instructions …
Vagrant and Docker – Next and Advanced steps with folders, ports, volumes, linking and more
This article is a continuation of the introduction to the combination of Vagrant and Docker that I started here: First steps with provisioning of Docker containers using Vagrant as …
First steps with provisioning of Docker containers using Vagrant as provider
Note: the next set of (more advanced) steps with Vagrant and Docker are discussed in this article: Vagrant and Docker – Next and Advanced steps with folders, ports, volumes, …
Generation of VM image for Oracle Event Processor and Stream Explorer using Vagrant and Puppet
In this article, I will introduce a set of Vagrant and Puppet configuration files that automate the creation of a Linux Virtual Box VM with Oracle Event Processor and …
Oracle StreamExplorer and Oracle Event Processor – installation instructions to quickly get going
This article discusses the installation of Oracle Event Processor 12c on Linux 64bit and the subsequent installation of Stream Explorer on top of OEP 12c. This article assumes Linux …
Docker – Take Two – Starting From Windows with Linux VM as Docker Host
My first attempt with Docker was from my Windows host machine using boot2docker, as described in this article: https://technology.amis.nl/2015/03/15/my-first-steps-with-docker-starting-from-windows-as-the-host/. Boot2docker is a great tool for being able to work …
My First Steps with Docker – starting from Windows as the Host
After reading quite a bit about Docker – especially the great write up by Mark Nelson (Getting to know Docker – a better way to do virtualization?) I believe …
Getting started with ApacheDS – LDAP Server and Directory Studio
Inspired by the work and some excellent blog articles by my colleague Maarten Smeets – and while writing about the LDAP Adapter in SOA Suite 12c for the Oracle …
Setup GMail as mail provider for SOA Suite 12c – configure SMTP certificate in trust store
On this subject, there are already many fine articles. I have borrowed from at least a dozen to understand what should happen and to make it work. You will …
Getting my hands on a Virtual Machine with Oracle Database 12.1.0.2 Enterprise Edition – 20-30 minutes from start to finish
NOTE: even though the steps described in this article all work – I am running into a problem with shutting down and starting up the VM again. So at …
Fastest way to a Virtual Machine with JDeveloper 12.1.3 and Oracle Database XE 11gR2 – on Ubuntu Linux 64 bit
In a previous article I have explained in quite a bit of detail how to create the Vagrant and Puppet scripts for stamping out a Virtual Box VM with …
Creating automated JDeveloper 12.1.3 & Oracle XE 11gR2 environment provisioning – using Vagrant and Puppet
Standing on the shoulders of many smart and persistent friends, peers and colleagues, I was able to fairly quickly concoct the Vagrant and Puppet configuration that allows automated provisioning …
Linux Trick with symbolic link to overcome folder storage and disk extension problems (for /tmp)
I am no Linux wizard by any standard. During the installation of some piece of Oracle software, I ran into a an error, indicating that my /tmp folder had …
A short guide to networking in Virtual Box with Oracle Linux inside.
This post is intended to be a dummy guide, best practices, or whatever you call it… about setting up a network while working with virtual boxes on a desk- …
Oracle Database 12c: quickly create a virtual machine with OEL 6.4 and Oracle Database 12c (for dummies)
I am first and foremost a developer. I am not an administrator. I know more about IDEs and GUIs than about command line. I have always been a little …
Oracle Database 12c: How to create a Virtual Box VM with Oracle Enterprise Linux inside – A dummy guide
I have a confession to make. I have not been into Linux very much. When I started my career at Oracle, back in 1994, I had to do a …
Larry Ellison – Opening Keynote of Oracle Open World 2010 – announcing Exalogic, the cloud in a box.
September 20, 2010
Database, Engineered Systems, IT, Java, Oracle, Oracle WebLogic Server, SOA
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The first major keynote of this year’s Oracle Open World conference was last night – Larry Ellison announcing the Oracle Exalogic machine, the “cloud in a box”. A high …