Automation

Share AWS Vault session with Bash (WSL)

I’m on Windows and I use AWS Vault to connect to AWS using an MFA token. It works wonderfully, unless you need to execute some Bash scripts. I love using Bash on Windows, as WSL makes it really easy to write my scripts. But, alas, the AWS environment variables set by AWS Vault are not […]

Expose docker-compose app with a secure Cloudflare Tunnel (cloudflared)

When I build containerized apps that need to be exposed on the internet, I usually need to forward ports, set up let’s encrypt and reverse proxy some random port. In this blog I’ll show you how to ditch all of that in favor of 1 secure Cloudflare tunnel in a docker-compose file.

Chrome Extension Development: Fetch non CORS URLs in v3

As browser security improves, many applications have implemented CORS headers to protect against unauthorized access. I’m working on a Chrome extension that needs to check if a certain URL is present on GitHub, before it opens the URL in a new tab. Let’s explore what we can do.

App definitions from Mesos/Marathon to CSV

We’re currently in the business of moving from Mesos/Marathon to Kubernetes. As we have a microservices environment we can move service by service. We have multiple clusters running, so I need to track which teams have which services (still) running on Mesos/Marathon.

Let’s see if we can lift the data out of the system using the Marathon API, JQ and cURL.

Bash Script with a Lib for Named Parameters

When working on Bash scripts, it is often useful to make them more flexible by using parameters. In a previous blog post, I demonstrated how to add named parameters to a single script. However, if you want to apply this feature to multiple script files, it might make sense to move the code to a […]

Grafana, I want slugs back for my Hubot! 😭

At Wehkamp, we use the Hubot Grafana project to make our Grafana dashboard available in Slack. It mainly helps our standby team to make quick assessments on what’s going on with our website. Last year, we saw we could not upgrade the package from 2.5.2 to 3.0.1, because slugs could not be used anymore. But we use slugs and… quite heavily! So we did not upgrade our Grafana v7… until we got hit by the input field bug. We decided to see what we could do to bring our slug feature back to our ChatOps bot!

DevOps Days Eindhoven Talk: How To Handle The Immense Traffic of a Successful Influencer Campaign

Anneke Keller (CTO), Koen Roumen (Head of Platfom) and me did a talk on DevOpsDays Eindhoven 2022: A true story on how we learned how to handle the immense web traffic caused by a successful influencer campaign. How we built a platform with Karpenter and Keda for rapid and massive auto-scaling and the effects this had on our platform.

Don’t use Slack Incoming WebHooks; App Creation is Dead Simple!

At Wehkamp we ❤️ Slack! Seriously, in order to improve our efficiency, we’ve connected many of our applications, alerts and dashboards to Slack channels. But, as with all things, there is a right way and a wrong way of integrating a webhook at enterprise level.

Let’s explore how easy it is to create an application.

Full Stack Live Meetup: How to handle the immense web traffic caused by a successful influencer campaign? (Dutch)

Chris Vahl (Cloud Engineer) and me did a talk on Full Stack Live #2 (Orange Talent: At Wehkamp we did a very successful influencer campaign, but it didn’t go well for our website. In this session we discuss what happened and how we mitigated our problems. We also show how we want to move forward using Kubernetes, Karpenter and Keda, to create a platform that scales better. This session is in Dutch.

Task: Save Article to Markdown

Let’s use a small snippet to convert any article to Markdown. This might come in handy if you want to repost your articles to blogs that support Markdown like DEV.