Reflecting on lessons learned in 2025 as a DevSecOps Engineer.

https://xalexander.io/2025/12/29/5-lessons-learned-as-a-devsecops-engineer-in-2025/

#DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes #Linux #Tech #Career #Docker

Another great resource to keep the skills sharp. You get a remote server with a problem, and your goal is to fix it.

https://sadservers.com/

#DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes #Linux #Tech #TechWithX #Docker

When someone is questioning your reasoning, it’s usually not personal. Curiosity isn’t criticism. 💡

#DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes #Linux #Tech #TechWithX #Docker

#DOAG2025 Conference was a blast!
Some pictures from my talk about Proxmox (for my company laptop: nested virtualized under Hyper-V), Oracle26ai, PostgreSQL, Patroni and CNPG on virtualized K8s, virtualized using Prometheus and Grafana.

Slides in English, presented in German (to download and read or view online - esp. if you weren't able to attend, because it was the last slot).

#proxmox #oracle #26ai #postgresql #postgres #enterprisedb #cnpg #k8s #LearnK8s #prometheus #grafana #observability

This made me laugh out loud. Sooooo accurate 🤣

#DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes #Linux #Tech #TechWithX #Docker

Whenever I “mess up” at work, I think of outages like these, and remind myself that my situation could be worse. Glad they're back online ✅

#DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes #Linux #Tech #TechWithX #Docker

After many years, I finally purchased a MobaXTerm license.

#DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes #Linux #Tech #TechWithX #Docker

Closing the year with some migrations. Ive been tasked with migrating and containerizing our Atlassian Tools (Bitbucket, Confluence and Jira ). All done with Confluence and Bitbucket. Jira in a few more days. I’ve learned A LOT over these past few weeks, but I’m so ready for this project to be finished so I can relax a bit, and enjoy the holidays with the fam!

#DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes #Linux #Tech #TechWithX #Docker

The “Well, that’s how we’ve always done it.” reason for not pursuing a new initiative should always be challenged. Gotta keep evolving.

#DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes #Linux #Tech #TechWithX

Some advice from a senior engineer that stuck with me, recently:

“Don’t try to memorize everything. Learn where the docs are and bookmark them.”

#DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes #Linux #Tech #TechWithX

Some concepts come easy. Some take time. But that "aha" moment? Worth it every time.
For me, recently, this was understanding TLS termination. What was your recent "aha" moment?

#DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes #Linux #Tech #TechWithX

You sure "rsync -av" keeps files in sync? It only compares the file's size and timestamp. If content changes without either updating, it's skipped. The "--checksum" flag is the real truth-teller.
#DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes #Linux #Tech #TechWithX

Got a crash course in TLS termination, today. The learning never stops ! #Productivity #Tech #DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes #IT

To all the "Getting Into DevOps" tutorials that don't have any modules on Networking ..shame on you. Networking is such an important foundation that gets skimmed over, or completely skipped, in a lot of tutorials.

#Productivity #Tech #DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes

Switched to Notesnook from Obsidian and haven't looked back!

#Productivity #Tech #DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes

A year ago I couldn’t tell you what a PVC or ingress was. Today I’m recovering from broken clusters, migrating core services, and — most importantly — actually feeling confident. 🚀

#DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes

- Stumbled upon mailgun, and am now using their free tier for my SMTP needs. Which aren't much.
- Deployed Komodo to monitor my docker containers.
#DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes

- Moved PiHole and Infisical (Secrets Manager) to external VMs outside of my K8s cluster. Not sure why I didn't do this when I initially built my cluster 🤷🏾‍♂️ . So what happened? #DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes

- Fully migrated my K8s stack to RKE2. Having my apps "GItOps"ed made the process less painful then what it could've been.

#DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes

Haven't posted in a while. Just a few update on my learning journey 🧵

#DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes