Matthias Sommer - IT Consulting - No problem can be solved by the same kind of thinking that created it

2. February 2020 Matthias

Create Golang API documentation with Swagger (1)

When you develop a backend, at some point you always come to the point that you have to explain its interface to other developers. With go-swagger and SwaggerUI we can automatically create an interactive, well-structured API documentation. This blog post shows how to annotate a Golang REST API and create

25. December 2019 Matthias

FaaS: Setup Kubeless and Serverless in OpenShift

Serverless is a framework that provides a unique way to build and operate serverless applications with different Cloud providers. We will be using a plugin to extend the Serverless command line tool with a Kubernetes-based solution. The serverless setup will be deployed to a local OpenShift instance.

14. November 2019 Matthias

Docker Compose: Retry Database Connect With Docker and Go

When I implemented a Docker Compose file that starts our entire system, I stumbled upon a common problem. The database container is ready, but the database itself is not. So the services try to establish a connection, but fail, because the database is still starting.

10. November 2019 Matthias

Private Golang Registry in Artifactory

The backend of my latest project consists of several microservices written in Go. Each service is built in Jenkins and then deployed to the Openshift Cloud Platform. The one problem we have is that this Jenkins is not allowed to communicate with servers outside of the companie’s network.

4. November 2019 Matthias

Insert JIRA Issue Key in Git Commit Message

To create a link between your Git commits and their Jira issue, developers must include the issue key into their commit comment. Often, developers forget to add the issue key to their commits. Instead, we use a Git commit hook to prefill the commit message with the issue key automatically.

3. November 2019 Matthias

Manual Deployment From Jenkins To Openshift

In a recent project, we set up a CI/CD pipeline with Bitbucket, Jenkins, and Openshift. Releases of the frontend and microservices should only be done manually, so we decided to implement a Jenkins job where the developer selects the service and version he wants to release.