Xavier
xalexander.io
Xavier
@xalexander.io
DevSecOps Engineer | Learning In Public

#TechWithX
https://xalexander.io
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
November 10, 2025 at 2:09 AM
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
November 9, 2025 at 6:32 PM
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
November 9, 2025 at 12:00 AM
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
November 8, 2025 at 4:18 PM
Got a crash course in TLS termination, today. The learning never stops ! #Productivity #Tech #DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes #IT
November 5, 2025 at 10:56 PM
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.

#Tech #DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes
November 5, 2025 at 12:26 AM
Switched to Notesnook from Obsidian and haven't looked back!

#Productivity #Tech #DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes
November 4, 2025 at 8:28 PM
Haven't posted in a while. Just a few update on my learning journey 🧵

#DevOps #learnk8s #100DaysOfCode #100DaysOfDevOps #homelab #kubernetes
August 17, 2025 at 2:14 PM
Upcoming Project:
Migrate my current k8s stack to RKE2.
#DevOps #k8s #learnk8s #cncf #100DaysOfCode #100DaysOfDevOps #kubernetes
July 4, 2025 at 9:42 AM
June 20, 2025 at 11:47 PM
Just had a power outage that took down my entire homelab. Recovery was… fun, and I got a first hand example of circular dependencies. Mini Thread 🧵
#DevOps #k8s #learnk8s #cncf #100DaysOfCode #100DaysOfDevOps #kubernetes
June 20, 2025 at 12:40 AM
Weekend Wins:
- Transitioned from Uptime Kuma to Gatus
- Learned more about longhorn....by breaking and fixing my own deployment
- Created an LVM to mount /var/lib/longhorn , and move away from the default "/" mount point on all of my nodes.
#DevOps #k8s #learnk8s #100DaysOfCode #100DaysOfDevOps
June 8, 2025 at 9:43 PM
Reposted by Xavier
🤬 Instant Rage
June 7, 2025 at 2:00 PM
I broke my Longhorn deployment 🥴, which triggered a domino effect that disrupted several other applications in my cluster.

#DevOps #k8s #learnk8s #cncf #100DaysOfCode #100DaysOfDevOps #kubernetes
June 7, 2025 at 2:48 PM
Migrating from Sealed Secrets to Infisical in my homelab.
#DevOps #k8s #learnk8s #cncf #100DaysOfCode #100DaysOfDevOps #kubernetes
May 27, 2025 at 5:53 PM
Finally got VictoriaLogs set up in my homelab!— got some proper log monitoring in place at last. Feels good to see everything in one place!

#DevOps #k8s #learnk8s #cncf #100DaysOfCode #100DaysOfDevOps #kubernetes #observability
May 26, 2025 at 6:49 PM
FINALLY, added some automation to my homelab via Ansible/Semaphore.

#DevOps #k8s #learnk8s #cncf #100DaysOfCode #100DaysOfDevOps #kubernetes #ansible
May 11, 2025 at 6:28 PM
Imposter Syndrome is no joke 😩
April 22, 2025 at 8:57 AM
lazygit for the win!
April 6, 2025 at 2:01 PM
What’s an overlooked topic that many "Getting Into DevOps’" guides miss? In my opinion, it’s networking. Understanding the basics of networking can make a huge difference, when troubleshooting. Thoughts?

#DevOps #k8s #learnk8s #cncf #100DaysOfCode #100DaysOfDevOps #kubernetes
March 29, 2025 at 6:09 PM
March 28, 2025 at 12:16 AM
Reposted by Xavier
If you're running ingress-nginx in your Kubernetes cluster please take a look at this latest CVE details, it's a big one! Patches are out so please get updating as soon as you can!

kubernetes.io/blog/2025/03...

#Kubernetes #Nginx #Ingress #CloudNative
Ingress-nginx CVE-2025-1974: What You Need to Know
Today, the ingress-nginx maintainers have released patches for a batch of critical vulnerabilities that could make it easy for attackers to take over your Kubernetes cluster. If you are among the over...
kubernetes.io
March 25, 2025 at 6:25 AM
March 22, 2025 at 4:56 PM