Fredric News

Tag: SystemEngineering

  • Linux System Identifiers: UID, GID, PID

    💡 Linux System Identifiers: UID, GID, PID — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Linux System Identifiers: UID, GID, PID. References and Guidelines (NOTE) In Linux/Unix systems, several identifiers exist to identify various resources throughout the system. Key identifiers File Descriptors Description: A number that identifies an input/output stream…

  • All-in-One Cloud Lab: VM Provisioning to

    💡 All-in-One Cloud Lab: VM Provisioning to — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for All-in-One Cloud Lab: VM Provisioning to. All-in-one Archi Phase 1 – Setup VM References and Guidelines (NOTE) //Instance configuration Phase 2 – Setup K8s Phase 3 – Setup Middleware / / References and Guidelines (NOTE)…

  • Ansible Automation Archi: Inventories

    💡 Ansible Automation Archi: Inventories — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Ansible Automation Archi: Inventories. 📑 Table of Contents playbook Detailed log output Specify log file (save) Closed network repository Check download variable (most important) Docker repository insecure settings troubleshooting playbook Architecture & System Flow Diagram SVG 100%…

  • Enterprise Archi Principles: High

    💡 Enterprise Archi Principles: High — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Enterprise Archi Principles: High. 📑 Table of Contents Business Repository Application GitOps Monitoring Extra Hardware Application GitOps Business Repository Architecture & System Flow Diagram SVG 100% Pan & Zoom Application Cluster Overview Architecture & System Flow Diagram…

  • Harbor Private Registry: Replication

    💡 Harbor Private Registry: Replication — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Harbor Private Registry: Replication. Reference link Issue Immediately after building, the contents can be confirmed to some extent as shown on the left. Images pulled from harbor are sha256 encrypted as shown on the right. Manual deployment…

  • Advanced Bash Shell Scripting: Signal Traps

    💡 Advanced Bash Shell Scripting: Signal Traps — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Advanced Bash Shell Scripting: Signal Traps. 🔗 https://minddoodle.tistory.com/m/10 🔗 https://jdm.kr/blog/4 Summary bash Copy # cmd결과를 변수로 사용하여 cmd 실행 command $({ command }) ENV BASH_SOURCE bash Copy # 현재 스크립트의 위치를 찾기 SCRIPT_DIR=”$(cd “$(dirname “${BASH_SOURCE[0]}”)”…

  • Terraform IaC Archi: S3 Backend & State

    💡 Terraform IaC Archi: S3 Backend & State — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Terraform IaC Archi: S3 Backend & State. Pages Concept Provider with RBAC Module composition main.tf variables.tf outputs.tf state-based comparison and update Example Directory rules recommended for multi-provider management bash Copy project-root/ │ ├── main.tf…

  • Wireshark Packet Capture & BPF Protocol

    💡 Wireshark Packet Capture & BPF Protocol — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Wireshark Packet Capture & BPF Protocol. Related documents installation bash Copy brew install –cask wireshark Filters Filter specification HTTP Filter http http.request http.request.method == “GET” http.request.method == “POST” http.response tls http2 http3 Filter by Source…

  • yq CLI Sheet: YAML Parsing, Querying

    💡 yq CLI Sheet: YAML Parsing, Querying — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for yq CLI Sheet: YAML Parsing, Querying. Installation Debian yaml Copy apt install golang-go # yq4 정상설치 go install github.com/mikefarah/yq/v4@latest export PATH=”$PATH:~/go/bin” snapd bash Copy # snap버그있으니 쓰지마셈 snap install yq apt yaml Copy # 이상한버전…

  • HTTP Authentication Methods: Basic, Bearer

    💡 HTTP Authentication Methods: Basic, Bearer — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for HTTP Authentication Methods: Basic, Bearer. AuthN and AuthZ AuthN(Authentication) Classification of factors Description example knowledge base What only you know Password, name, resident registration number, employee number, etc. Ownership basis Owned only for use Certificate, OTP,…