clovis

I have two EC2 instances. EC2-A → client EC2-B (10.0.2.15)→ server running an app on port 8080 From EC2-A: curl http://10.0.2.15:8080 → works ✅ ping 10.0.2.15 → fails ❌ Security group is open for TCP 8080. Why does ping fail while curl works?

@effiecancode Interesting😆😆😆 Who is the person?

@clovistb Devops engineers learn a database so they know who to blame, database engineers don’t learn CI/CD because they already know who to blame.

Recruiters always ask DevOps engineers to master at least one database but why don’t they ask database engineers to master at least one CI/CD tool?

@Guptha933907 Rollback depends on the workload and applications running on the cluster.

@clovistb Nice one 👌 Do you also test rollback scenarios during upgrades?

Kubernetes Upgrade Tip 8/10 This tip is for those who haven’t set up a cluster yet 1 -  You need a real cluster to practice
Use kubeadm or EKS 2 -  If kubeadm feels hard, use my setup
👉 Link in first comment I already did the hard part for you.
Just run one command and start practicing upgrades immediately. Run one command and you get: - 1 control plane - 2 worker nodes - Kubernetes v1.34 ready 3 - Practice upgrades every day - Change Kubernetes version - Run the upgrade - See what breaks and fix it Repeat this at least 10 times After that, you won’t guess anymore
You’ll understand upgrades and explain them in simple terms

Click this link and pull your cluster github.com/clovisbernard/…

@twtayaan The good news is that it didn’t collapse😆😆😆😆

We use k3s because it's the same as Kubernetes, just more stable:

@xanderNLP Db engineer running K8s?

@clovistb They do. It’s Kubernetes.

@devops_nk He will send you an email and cc the HR.

Friday afternoon and the manager starts looking for you.

@AskYoshik Enjoy!!!!!

been in vietnam for 9 days now, last day today and i kept it just to relax, do nothing, no plans and i realised something slightly uncomfortable i don't really know how to sit idle anymore first 2-3 days felt amazing, new place, new food, no pressure, mind slows down a bit by day 5-6 you actually feel reset, like your brain cleaned some cache but after that, it starts getting weird you open your phone not because you want to relax, but because you're itching to do something, solve something, build something like your default state is no longer rest, its engage and then you realise maybe it's not burnout, maybe its just how you've wired yourself over time too much vacation doesn't feel like freedom anymore, it starts feeling like drift for me at least, 5-6 days seems like that sweet spot where you disconnect just enough to reset but not so much that you lose momentum anything beyond that and you're not relaxing, you're just waiting to get back to doing something meaningful again

@Tihannah13 Everyday?

Since morning yesterday. 22hrs here

@Sparsh209 It’s fine

Is your X analytics section working fine? Or am I the only one having issue🙄

@CPUFXRnDMV No problem This answer is enough 🙏

@clovistb Well Route 53 will create multiple DNS records for same domain...one per AWS region. On every query it will select the lowest latency from users location. I could go into more detail but I'm not a paid X user so my character limit hits quick. Good question though. 😉

Your application responds in 80 ms in Germany but 520 ms in Brazil. The backend is in Germany. The code is the same. So what’s causing the difference? How would you fix it?

@CPUFXRnDMV Deal 🤝 I’ll bring the beers if you bring lower latency for Brazil

@clovistb Us network guys will do the plumbing but you DBs guys need to bring us a few beers and ask nicely how to fix it. 🤣🤭

@SaibrousFarms Yes The request is taking too much time to reach Brazil

@clovistb #Latency The application server might be sitting right in 🇩🇪 with a fast latency through-put or responses of 80ms and 520ms in 🇧🇷 due to the above aforementioned…likewise, #Traffic #Distances 🇩🇪 > 🇧🇷 = Traffic Distances Covered I want to learn Snr.

@franknnabugo That is the multi region architecture

@clovistb Latency.. Your backend is hosted in server very far from users in Brazil.. To fix it, spin up an instance of your backend close to users in Brazil..?

@Osaaammma This is one solution

@clovistb Use a cdn

@xanderNLP 😆😆

@clovistb Delete the application.

@_jaydeepkarale I am curious to know how to move the users?

@clovistb Yeah, easy peazy

@Narender09_X @kritikakodes What is it?

@kritikakodes Vibe coding without 'skills' 😂

I am a Vibe coder, scare me with one word.🤔

@uday_devops Great approach 🙏

Geographic latency and the physical limitations of long-distance data transmission. - Use a CDN with edge caching using Cloudflare, for example. - Deploy a regional backend and run your app in AWS sa-east-1. - Use a global load balancer to route users to the nearest healthy backend automatically. - Place database read replicas in the region so the Brazil backend doesn't need to reach back to Germany for data.