Fredric News

Tag: DeepDive

  • Software Archi: Modularity, Cohesion

    💡 Software Archi: Modularity, Cohesion — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Software Archi: Modularity, Cohesion. The Notion API rate limit was reached. Wait at least 3 seconds before retrying this tool call. Do not retry immediately or in parallel. {“error”:{“code”:”rate_limited”,”classification”:”rate_limit”,”operation”:”fetch”,”message”:”The Notion API rate limit was reached.”,”impact”:”The requested tool…

  • Harbor Container Registry on Docker with

    💡 Harbor Container Registry on Docker with — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Harbor Container Registry on Docker with. Closed network Ready ubuntu 20.04 > 💡 docker– containerd.io/now 1.6.6-1 amd64 \[installed,local\]– docker-ce-cli/now 5:19.03.15\~3-0\~ubuntu-focal amd64 \[installed,local\]– docker-ce/now 5:19.03.15\~3-0\~ubuntu-focal amd64 \[installed,local\]– docker-compose-plugin/now 2.6.0\~ubuntu-focal amd64 \[installed,local\]– libseccomp2/now 2.5.1-1ubuntu1\~20.04.2 amd64 \[installed,local\] docker-compose–…

  • k3s Lightweight Kubernetes: Archi & Resource

    💡 k3s Lightweight Kubernetes: Archi & Resource — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for k3s Lightweight Kubernetes: Archi & Resource. Installation & Uninstall Automated Upgrades (deploy to system-upgrade-controller) Documentation 🔗 https://github.com/rancher/system-upgrade-controller?tab=readme-ov-file Exec bash Copy k label nodes $mynode k3s-upgrade=”true” # Y.O.L.O. kubectl apply -k github.com/rancher/system-upgrade-controller Trouble shooting Resolved k3s…

  • Bash Script if Statements: Compare Operators

    💡 Bash Script if Statements: Compare Operators — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Bash Script if Statements: Compare Operators. if Expression Use Features POSIX Compatibility if ; then Branch based on command execution result Judging by the exit code after executing the command fully compatible if [ ];…

  • Modern Languages Compare: Go, Rust, Java, and

    💡 Modern Languages Compare: Go, Rust, Java, and — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Modern Languages Compare: Go, Rust, Java, and. MSA Conformity Assessment Spring Boot VS Micronaut VS Quarkus VS Go (Golang) VS Node.js VS Kotlin with Ktor Evaluation items Spring Boot Micronaut Quarkus Go (Golang) Node.js…

  • Nginx Web Server Tuning: Reverse Proxy

    💡 Nginx Web Server Tuning: Reverse Proxy — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Nginx Web Server Tuning: Reverse Proxy. References and Guidelines (NOTE) If Nginx is accessed over HTTPS, but internally uses HTTP to communicate with backend services, this is a common configuration known as SSL termination or…

  • Spring Lombok Annotations: Production Usage

    💡 Spring Lombok Annotations: Production Usage — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Spring Lombok Annotations: Production Usage. Common Annotation If you add the @Data annotation to a class, you can use highly useful methods such as toString(). sql Copy @Data //아래의 모든 애노테이션을 포함하는 문법 // @Getter +…

  • Linux SSH Session Idle Timeout & Automatic

    💡 Linux SSH Session Idle Timeout & Automatic — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Linux SSH Session Idle Timeout & Automatic. RHEL vi /etc/ssh/sshd_config bash Copy # 클라이언트로부터 데이터를 받지 못한 경우 sshd(8)가 클라이언트로부터 응답을 요청하기 위해 암호화된 채널을 통해 메시지를 보내는 시간 초과 간격을 초 단위로 설정합니다.…

  • Grafana Dashboards & Prometheus Data Source

    💡 Grafana Dashboards & Prometheus Data Source — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Grafana Dashboards & Prometheus Data Source. Alert Create Alert Rule graphql Copy # A : prometheus Query: 10분동안 restart된 횟수 sum by(container,namespace,pod) (changes(kube_pod_container_status_restarts_total[10m])) # B : Expression: Reduce A # C : Expression: Math $B…

  • CKS Certified Kubernetes Security Specialist

    💡 CKS Certified Kubernetes Security Specialist — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for CKS Certified Kubernetes Security Specialist. 📑 Table of Contents Skills Map by CKS problem solving scope CKS Troubleshooting Flow CKS 시험은 문제에서 구체적으로 어떤 기술(AppArmor, Seccomp, RBAC 등)을 사용해야 하는지 명시하지 않고, 추상적인 보안 요구사항(예: “컨테이너의…