Posts

2026

  1. rules_img Overview: Building Container Images Faster with Bazel

  2. KV Secrets Engine vs Transit Secrets Engine: Storage vs Encryption as a Service in Vault

2025

  1. Sandboxed Containers Overview: Security Isolation and Trade-offs

  2. Comparing 3 Cilium Installation Modes on EKS: ENI vs CNI Chaining vs BYOCNI (Overlay)

  3. Routing External Traffic with Istio + Kubernetes Gateway API (Gateway → HTTPRoute → Service)

  4. Karpenter Overview: Kubernetes Node Autoscaling

  5. A Guide to Kubernetes Topology Aware Routing

  6. [Hardeneks Series Part 1] A Guide to the EKS Cluster Security Assessment Tool

  7. Kubernetes Changes I Missed After Earning the CKA (2022/11 ~ 2025)

  8. API Gateways: From Concepts to Implementation

  9. Managing Secrets in Kubernetes: Sealed Secrets vs SOPS

  10. Handling CORS in MSA Environments: An Infrastructure-Focused Guide for DevOps Engineers

  11. Troubleshooting Resource Shortages in EKS Clusters

  12. Optimizing Costs with Ingress Grouping on Amazon EKS

  13. Configuring Istio Sidecar Mesh + ALB Ingress on EKS with Terraform

  14. Configuring Istio Ambient Mesh + Gateway API on EKS with Terraform

  15. From Promtail to Alloy: Collecting Logs with Alloy and Integrating Loki in Kubernetes

2024

  1. Notes on /actuator/health

  2. Integrating Argo CD and Grafana Login with Keycloak

  3. Terraform Notes

  4. Adding S3 Credentials to Elasticsearch Managed by eck-operator

  5. DNS Query Failures in Kubernetes

  6. Setting Up Kubernetes On-Premises (v1.30)

  7. Checking HikariCP Option Values

  8. What Is a Buildpack?

2022

  1. Testing a GitHub Actions Workflow

  2. Installing Argo CD on Amazon EKS

  3. Installing Jenkins on Amazon EKS

  4. Installing Istio on Amazon EKS

  5. Installing Grafana and Prometheus on Amazon EKS

  6. Installing GitLab on Amazon EKS

  7. Installing ELK on Amazon EKS

  8. Installing ELK 7.17 on Amazon Linux 2

  9. Installing Zabbix 5.0 LTS on Amazon Linux 2

  10. Installing Pinpoint 2.4.2 on Amazon Linux 2

  11. Installing Amazon Linux 2 on Hyper-V

  12. Automating Dump Generation for ECS Fargate Tasks

  13. Setting Up minikube on Windows 10

  14. Preparing for the CKA