Tech Stuff

Switch cabinet

Internet / Social Media / Software / Web

23. Oktober 2026

Ralf Peter Reimann (ralpe)

How I Updated PHP and Checked My WordPress Server for Intrusions with ChatGPT

After the PHP2Shell security warning, I took my AWS Lightsail instance offline, updated PHP with ChatGPT’s help, checked WordPress for signs of intrusion, and brought my websites back online.
19. Oktober 2026

Ralf Peter Reimann (ralpe)

Goodbye, Bitnami: Migrating My WordPress Blog with the Help of ChatGPT

After AWS Lightsail marked my older Bitnami-packaged WordPress image as no longer maintained, I migrated ralpe.eu to a modern server. The entire process unfolded in dialogue with ChatGPT—from moving WordPress and transferring SSL certificates before the static IP switch to configuring renewal and investigating unexpected server outages.
3. März 2025

Ralf Peter Reimann (ralpe)

When Chatbots Fail: Lessons from My Frustrating Experience with Automated Customer Service

In this post, I share an actual dialog between myself—the user—and a chatbot, and then provide an in-depth analysis of the customer experience and the bot’s performance. I detail the specific problem I encountered, examine key issues and the emotional impact of the interaction, and offer recommendations for improvement. I attempted to book two flights…
26. April 2023

Ralf Peter Reimann (ralpe)

ChatGPT Hallucinating: Messing up an Apple Pie Recipe

I have a recipe for apple pie in German. I asked ChatGPT to translate it into English, convert the measurements to US units, and then create a script to produce a video of the recipe. This seems like a simple and straightforward task. But instead of just translating the recipe and making a video script…
19. April 2023

Ralf Peter Reimann (ralpe)

Schnell erstellt: KI-generiertes Predigt-Video

Von meiner letzten Predigt in Speldorf gibt es leider nur ein Audio. Aus diesem Predigtmitschnitt per Handy habe ich mit der KI-Video-Plattform Pipio schnell dieses Video erstellt. Das ist noch nicht sehr beeindruckend, aber man sieht, was bald möglich sein wird, wenn statt des Standardavatars ein Real Life Avatar von mir verwendet wird. Das geht…
20. April 2022

Ralf Peter Reimann (ralpe)

Bookmarks for Ubuntu / Linux

Reducing the size of a PDF document via command line: A 17.4 MB file was reduced to 1.7 MB
23. Februar 2022

Ralf Peter Reimann (ralpe)

Installing Bitnami WordPress Multisite on AWS Lightsail

Update (October 2026): I have since migrated ralpe.eu from the older Bitnami-based installation to a newer AWS Lightsail environment. Read the follow-up article: Goodbye, Bitnami: Migrating My WordPress Blog with the Help of ChatGPT. This is how I walked through the installation process. Here are the links I followed:
16. April 2019

Ralf Peter Reimann (ralpe)

Alexa hört mit (by default) und macht Angst

Alexa hört mit und gibt die Daten an Amazon zur weiteren Analyse weiter. Dies ist die Standardeinstellung.
9. März 2019

Ralf Peter Reimann (ralpe)

Migration from WordPress.com to a self-hosted Blog on Amazon Lightsail

Why Amazon Lightsail? I started my blog ralpe.eu seven years ago on WordPress.com. It was easy to set up, I could use the blog right away and it was only 13 bucks a year to map my blog’s domain ralpe.eu to the domain theonet.de provided by WordPress.com. For a long time I was happy with…
22. Januar 2019

Ralf Peter Reimann (ralpe)

Let’s Encrypt SSL Certificate installed

– Congratulations! Your certificate and chain have been saved at: *** Your key file has been saved at: *** Your cert will expire on 2019-04-22. To obtain a new or tweaked version of this certificate in the future, simply run certbot again. To non-interactively renew *all* of your certificates, run “certbot renew” – If you…