Folder: Tech-Second-Brain/Personal/DevSecOps
30 items under this folder.
To Cloud Native Multi-Cluster with ExternalDNS
Surprise! One More for the Year 🎁 Hi everyone! It is a great opportunity to be back with one more technical deep dive before the new year arrives. I know I mentioned in my last post that I was wrapping things up, but I managed to finish my experiments with ExternalDNS and couldn’t wait to share the results with you.
Vault and Keycloak - The combination for rotation Vault Token
Quote Hi @all, It’s me again and It’s been a while after I chill out and enjoy the technologies, so I turn back and today I will talk about Vault, Identity Server like KeyCloak which provide OIDC Authentication methods for accessing Vault, How can we use this combination for rotating vault token.
What is Wrapper Pattern ?
Quote Hi @all, how are your weekend ? Stay tune okay, and this week topic will take around wrapper, what is this and what we can deal with warpper to push efficiency for your work with them.
Why Internal Developer Platforms (IDPs) Matter in 2026: OpenChoreo and the Journey of Innovation
Quote Hi everyone, it’s me again! To keep the momentum going from my last post, I want to share a deeper look into the next chapter of my career, my production W’xOps IDP, and the tools that have inspired me from day one, OpenChoreo While I chose not to adopt their architectures directly—recognizing that you will certainly discover alternative approaches that work best for you—these tools have profoundly shaped my perspective on the Internal Developer Platform (IDP) landscape in 2026.
Work with EKS and How to monitoring your Cluster
Quote Hi @all, I back after previous week spend for couple stuff of myself, recover and love 😄. How is your holiday?, it’s starting right, I hope you have good time with family and enjoy your holiday.
Integration automation test with GitLab CI
Quote Hi @all, how is your week? I feel awesome with couple things I learn from a bit podcast, movie and some story when I try talk with my friend. However, I am not ever forgot to write a something for this weekend, so we will learn about integrating automation test with GitLab and see the supportive of GitLab for this stuff.
Monitoring with Portainer
Config Portainer with Shell Scripting So for easily managing and reading logs, metrics, and exec console of containers, you will need monitoring tools, and portainer is exactly what you want, go to documentation for more detail.
Network traffic monitoring and analysis for anomalies detection and auto-scaling
Why was it gonna released ? NTMA - Project Infrastructure Quote Hi @all, About releasing documentation for final university project, I want to hold this on hand in little bit time but I think It could helped another, therefore, When I contribute and hope It can help you and make solution on near future !!! LOL.
Play with Makefile for 1st time
On this topic, It just put a couple things to finding out how we can use Makefile. It just a brief tutorials from Learn Makefiles With the tastiest examples, Just learn and figure out why want to play with this one and C, C++ Reference Documentation Official GNU Make Learn Makefiles With the tastiest examples Makefile and anything about that type scripting Define, Why do we need Makefile ? Makefiles are used to help decide which parts of a large program need to be recompiled.
Profiling applications with Pyroscope
Quote Hi @all, It’s me again, so what for doing today ? I want to talk about new ways to monitoring application but deepest into memory cpu process and more about the resources used by them when we interact with Web-App or API.
Protect sensitive data and secret files with sops
Quote Hi @all, It’s me again 👋, how is your week ? Back again to my blog, this weekend, I want to sit with you to talk about how to keep your sensitive environment variables or secret files look secure, and able to put in repository.
The Story of Mine about Multi-Region Architecture
Quote Yo, everyone! Long time no see. I’ve been quite busy with my job lately, and it took a while to get back here, but I’m happy to join you all again before the new year! Today, I want to go directly into the deep dive I’ve been researching recently: Multi-Cluster Architecture.
Digging into AWS Monitoring Stack
Quote Hi @all, what sup, how are you going dawg ? Legit insane last two weeks with new decision and more stuff around choosing next path for my career.
How the fast way to deploy your application ?
Quote So hi @all, It’s me again and long time no see, just have a quick break for vacation on last week. Back to back, today I will provide you the way to deploy your application, how the fast way the cloud service can help you serve this problems ? Let digest about ☕☕ Problems and role of Cloud Question I know when you want to perform or release your application, sometime you will meet some problems on knowledge when you do not have experience with Virtual machine (Azure), EC2 (AWS), or droplet (Digital Ocean) to setup and operation your application on these one But don’t worry, because of with the growth of containerization technologies, you will easily resolve that with your own application work like container, for example docker or podman.
First EKS Cluster with Milvus DB
Quote Hello @all, long time no see, it’s me again. Sorry, I don’t have time for doing personal blogging, but my job is crazy disaster, anything need to ready and I feel not well with my health to control over two things.
GitLab Runner and How can we use couple of features of this platform ?
Quote Hi @all, It’s me again. How is your week? I still good and enjoy a lot with my new job. I wonder ask myself about how much time do I work with GitLab and GitLab Runner ? Most of guys use this but maybe skip useful features of this platform, I actually talk about one of them.
How can I build my homelab with Docker Swarm ?
Quote Hello, Hello @all, welcome back to my new blog. Couple of weeks ago quite busy and enjoyable of myself, I just spend for refresh in holiday and spend a week for my family and friend.
How to serve Java API with Maven and Tomcat
Quote Hi @all, it’s me again, long time no see, how is your new year? Let’s kickoff a bit energy with simple trying from my site with new technology and methodology to build and serve Java API with couple of tools, such as Maven, Tomcat and see how it work.
About Serverless Discovery - DIY Chatbot Serverless with Cloudflare Worker + D1
Quote Hello, hello! It has been a while since I shared a hands-on, DIY technical project. Lately, I’ve been heavily focused on W’xOps IDP, which is currently in a maintain-and-refactor phase as me prepare for its first open-source (OSS) release.
Network 101: Advantage Networking Fundamentals - Routing, VPN and Peering
Quote Hello everyone! It has been a while since my last technical release. I took a few weeks off to celebrate the Tet Holiday in my country, set up the workspace for my new job, and most importantly, begin the journey of running my own business alongside a close friend.
Create Atlantis with ECS Fargate for automation provisioning
Quote Hi @all, this week is so busy for me, and this about to learn something new about gitops and techniques and tools depend on this concept, and this week I will take a break kubewekend series.
Build your first Helm Repository
Quote Hello y’all guys, Alongside the return of kubewekend this weekend, we’re also going to learn how to build a complete Helm repository that you can use for your applications, homelab, or anything else you might need.
Build your wiki for 1st time
Quote Hi @all, Today I and you will learn how way to making your first landing page, automation update and release that with github-actions. This will fast, stable, fun and easily managing what you want to release, have a sit and we will start !!! 😄😄😄 Find out the target - Reason why you need this TLDR Quote Probably, you are same as me, If you figure out a new things, for example: New Technologies.
Do self-hosted analytics platforms for your website with automatically SSL domain
Quote Hi @all, Hope you have nice weekend. On this week, I will talk about little bit a new things what I try and applied for my wiki-site for analytics, tracking the activity on my site with umami.
Compile gRPC for 1st time
So like the previous topic - Play with Makefile for 1st time, I hope you and me can produce the makefile for helping compile C++ project, especially gRPC - pretty hard when work with C++ than others language.
Create Free SSL with Let's Encrypt and Certbot
For SSL implementation, various technologies are available. Nevertheless, to optimize the cost of operating your system, pairing a static IP address with Let’s Encrypt and the Certbot Python 3 client is highly recommended for your domain.
Create SSL Cert with ACM and Route53 for AWS Services
Quote Hi @all, this week is not special at all, how about you guy, hope you feel well and chill. This week is so busy, so I don’t have mood to continue kubewekend in this week, maybe back to next week.
DevOps và những điều tôi học hỏi được
Quote Hi @all, how is your day ? It’s a special week, I have invited to become a guest of workshop of my old club, and I’ll share about DevOps, DevSecOps and A couple things I learned after 3 years in this fields.
0-downtime with Blue-Green Deployment
Info Solution: Choose for temporary Blue and Green deployment. More detail can be found in this Custom Blue Green Deployment With Nginx And Gitlab Ci Blue and Green deployment strategy Nginx with bash scripting With the bash script is registered via cronjob, we need to consider about two things Nginx need to be setup for reverse proxy and route traffic when downtime occur Docker will have strategy about scale up and down the service for reducing down time With nginx configuration, it will be possible to reload a new configuration Nginx and except downtime when updating service with nginx (Service will have retries but not return 5xx Error) On the script, it will flexibly re-change between 2 configurations via Blue Green Deployment Docker for Zero Downtime Have sleep command between them, so it will change to default when the service becomes stable Docker With Docker strategy, it will perform some this task like When have new image on container registry, it will perform pull new image on that time.
AWS SSO from Self Gitlab Terraform Module Registry
Quote Hi @all, how are you going ? Mess up, and not have mood to write anything because kind of stuff in social life. But as you can see, I must to do for probably myself to continuous contribute, so here I am.