Category: Java

Check Docker Images for Vulnerabilities with Anchore Engine

When using Docker containers in production, we need to ensure that we are following best practices. In this post, we will focus on Ensure images are scanned and rebuilt to include security patches from the CIS Docker Community Benchmark which we discussed previously. The item states that you should scan your images “frequently” for any vulnerabilities and then take the necessary actions to mitigate these vulnerabilities. We will use Anchore Engine in order to accomplish this.

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Setup Jenkins CI in 30 Minutes

Do you want to experiment with Jenkins CI in a local setup? In this post we will setup a local Jenkins CI server, create a build job for a simple Spring Boot Maven project and push the created Docker image to DockerHub. It will be a setup for local experimenting only, but really handy if you want to try out a Jenkins plugin for example.

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Speed up Development with Docker Compose

Assume a new developer or test engineer is added to your team. You develop an application with obviously some kind of database and you want them to get up to speed as soon as possible. You could ask them to install the application and database themselves or you could support them with it, but this would cause a lot of effort. What if you handed them over a simple YAML file which would get them up to speed in a few minutes? In this post we will explore some of the capabilities of Docker Compose in order to accomplish this.

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How to Solve Your Java Performance Problems (Part 2)

In the first part of this post, we explained the Performance Diagnostic Methodology (PDM) and how to use it. But, the proof of the pudding is in the eating and therefore it is now time to apply the methodology. Of course, the best proof would be to apply the methodology to a real world performance issue, but instead of waiting for that, we will try to simulate some performance issues and verify whether the methodology can work.

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How to Solve Your Java Performance Problems (Part 1)

Last June I saw an interesting conference talk at J-Spring given by Martijn Verburg (from jClarity) about the Performance Diagnostic Methodology (PDM), a structured approach in order to find the root cause of Java performance problems. In this post I will try to highlight the key concepts but I do recommend watching a recording of the talk from Devoxx UK. In the next part of this post, we will try to apply the theory to some problem applications.

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Introducing Red Hat CDK

This week, we will take a look at Red Hat Container Development Kit (CDK). CDK provides a pre-built Container Development Environment based on Red Hat Enterprise Linux to help you develop container-based applications quickly. We will install CDK on a Windows machine and deploy our mykubernetesplanet Docker image from our last post to the Kubernetes cluster.

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J-Spring 2018 impressions

On Thursday the 31st of May I went to the J-Spring conference at Utrecht, the Netherlands. J-Spring is the largest one day Java conference in the Netherlands in the spring organised by the NLJUG (Dutch Java User Group). The title of the event might be a bit misleading as you may think that it is only about Pivotal’s Spring, but it is more than that. In this post I want to share my experiences that day.

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