Category: DevOps

In our daily work we are dealing with data from many sources. Data in CSV files, from Cloud APIs, in mail servers, configuration files, Terraform plans, in logging systems, …

How to be prepared for a black swan scenario?

Automation through infrastructure as code is the name of the game. And I am a player in that game. In the last few weeks I have spent a lot …

The situation: a Compartment on OCI should be removed. Or at least all its resources should be purged. Or at least most of the resources should be removed. The …

WYSIWYG may not be true for all IT systems. What you see may be more than what you actually get. As a Product Owner, you have to be very …

This year I had to work with a colleague for multiple internal poc’s that we could use to show customers. Together we started thinking about the approach and where …

Script to stop the execution of CloudFormation when you made a small error in a custom resource (Lambda function).

Jenkins is a solid CI/CD platform which has proven itself over the years. Many organizations use it to build, test and deploy their applications. In Jenkins it is possible …

SonarCloud is a hosted SonarQube SaaS solution which helps you with code quality management. It is free to use for open source projects. You cannot install 3rd party plugins …

OWASP ZAP (Zed Attack Proxy) is an open source dynamic application security testing (DAST) tool. It is available here and has a website with documentation here. I recently encountered it when looking …

What’s in a name? A title is important and I hope that it describes well what I do want to share with you in this series of articles. It …

Last time in “How to build an Oracle Database application (that supports APEX, Java, React or any other front-end) (5)”, I told you about Git, Subversion, Maven and Flyway. In …

Last time in “How to build an Oracle Database application (that supports APEX, Java, React or any other front-end) (4)”, I told you about the Oracle SQL Developer Data Modeler. …

Last time in “How to build an Oracle Database application (that supports APEX, Java, React or any other front-end) (3)”, I told you about the Oracle Database and Oracle APEX. …

Last time in “How to build an Oracle Database application (that supports APEX, Java, React or any other front-end) (2)”, I did show you the database structure. This time I …

Last time in “How to build an Oracle Database application (that supports APEX, Java, React or any other front-end) (1)”, I gave you an introduction. This time I will elaborate …

Introduction In response to a demo I gave about deploying a docker container to the Azure platform, I received some questions about deploying a docker container to the AWS …

Introduction Sonarcloud is a static code analysis tool. This means that it checks out the code at your repository, does an analysis and shows you the results. It may …

This article is a follow-up to my previous article about using Azure Artifacts for own NPM modules. In that article I showed how to create a NPM module by …

Introduction In the previous blog, I talked about unit tests of the AWS Shop example . Today, I will continue with a smoke test and a performance test. Smoke …

In the previous article I explained how to set up multiple environments for Azure Pipelines. In this article I will explain how you can deploy the artifacts to the …

In the previous article we discussed how we can build a pipeline and at some tests to it. In this article we’re going to discuss how we can set …

In the previous article I showed how to build a webapp in the Azure pipeline. In this article I will explain to you how you run tests in your …

In the previous article, we discussed how we can set up a pipeline with multiple stages in Azure Pipelines. In this article we will discuss how we can build …

This will be the first part 5 part series about Azure Pipelines. In this first part I will explain to you how to set up your Azure Pipeline so …

What is Azure Pipelines? Azure pipelines is a free continuous integration/continuous delivery tool from Azure Devops (Microsoft). Not only can it deploy to the azure cloud, it can also …

Yesterday I published a blog about AWS policies. We used the IAM wizard to create a policy. When you try to use this policy with the users we created, …

Today, I’ll demonstrate how you can add policy’s, groups and users within AWS. In a couple of days, I’ll demonstrate the use of AWS Elastic Container Services (ECS) to …

Today, I’ll explain how to install and use oVirt: a nice virtualization tool for Linux, which is based on KVM. I installed the current production version 4.3.8 on a …

Last week, I published a blog about implementing a PXE server . Today I’ll show how kickstart/anaconda files can be used to deploy a server. I will use the …

What is PXE? PXE (Preboot eXecution Environment) is a method of deploying an operating system to a computer over the network. I think it’s great: you don’t need to …

We recently enabled Extended HTTP Access Logging on our WebLogic Managed Servers. This adds the average response times and potentially several other valuable values to the WebLogic Access Log …

This story is based on true events. It happened fairly recently. I was called into an organization that was experiencing performance and stability issues that affected mission critical processes. …

Monitoring sounds like a terribly useful thing to do. And in many situations it is of course. However, rather than starting our discussion with monitoring, we really should start …

Last year I got introduced to the new features 2nd generation Jenkins at a workshop of CloudBees . This year I got also the opportunity to discover them in practice. One of …

A couple of moths ago, Enterprise Modules announced the easy to start way of making use their Oracle modules, ora_profile. Recently their modules have been updated to support the …

Preparation: before I started with Prometheus, I installed VirtualBox, Minikube with Tiller on my Windows 10 laptop – as described in this article: https://technology.amis.nl/2018/08/13/running-kubernetes-1-10-using-minikube-on-windows-10-adding-kubectl-and-helm-tiller/. I then increased the Base …

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 …

Since a few months I’ve been involved in working with git to save our Infrastructure as Code in GitHub. But I don’t want to have to type in my …

Oracle announced a managed Kubernetes Cloud service during Oracle OpenWorld 2017. This week, I had an opportunity to work with this new container native cloud offering. It is quite …