Fredric News

Tag: Engineering

  • Jekyll Static Blog Build T-Shoot & Ruby Gems

    💡 Jekyll Static Blog Build T-Shoot & Ruby Gems — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Jekyll Static Blog Build T-Shoot & Ruby Gems. Rationale bash Copy ❯ jekyll serve Configuration file: /Users/mh/workspaces/myeong-han.github.io/_config.yml Source: /Users/mh/workspaces/myeong-han.github.io Destination: /Users/mh/workspaces/myeong-han.github.io/_site Incremental build: disabled. Enable with –incremental Generating… done in 0.266 seconds. Auto-regeneration:…

  • 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…

  • JavaScript Core: Event Loop & Async

    💡 JavaScript Core: Event Loop & Async — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for JavaScript Core: Event Loop & Async. Grammar Type 1. Primitive Types A primitive type represents a single value, and is a data type in which the value itself is stored. Primitive types are immutable, and…

  • Kube-apiserver Hardening: RBAC & Admission

    💡 Kube-apiserver Hardening: RBAC & Admission — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Kube-apiserver Hardening: RBAC & Admission. Common Log analysis to resolve Manifests errors bash Copy # 컨테이너 재시작여부 확인 crictl ps # Manifest 문법오류 탐색 (컨테이너가 안뜨므로 치명적임) journalctl -u kubelet | grep manifest # 종료된 컨테이너…

  • 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,…

  • Java Functional Interfaces & Lambda

    💡 Java Functional Interfaces & Lambda — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Java Functional Interfaces & Lambda. Overview A functional interface is an interface with one abstract method. Starting from Java8, interfaces can contain default methods with default implementations. Even if there are multiple default methods, if there…

  • Harvester HCI in HomeLab: KubeVirt VMs

    💡 Harvester HCI in HomeLab: KubeVirt VMs — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Harvester HCI in HomeLab: KubeVirt VMs. Installation HCI: Host References and Guidelines (NOTE) Hosts → \ → Click Edit Config Mount Disk and Join Longhorn Storage → Click Add Disk → Select Disk → Save…

  • istioctl CLI Sheet: Istio Proxy Diagnosis

    💡 istioctl CLI Sheet: Istio Proxy Diagnosis — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for istioctl CLI Sheet: Istio Proxy Diagnosis. Linked Page Cluster Control install Apply the Istio manifest to install or reconfigure Istio on your cluster. uninstall Remove Istio from the cluster upgrade Upgrade your Istio control plane…

  • CSS Selectors : Compound Selectors

    💡 CSS Selectors : Compound Selectors — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for CSS Selectors : Compound Selectors. About CSS selectors CSS (Cascading Style Sheets) is responsible for providing styles to HTML elements. To do so, you need to be familiar with selectors because you need to specify the…

  • CNCF Cloud-Native Open Source Ecosystem

    💡 CNCF Cloud-Native Open Source Ecosystem — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for CNCF Cloud-Native Open Source Ecosystem. Collaboration tools Issue Tracking Jira – Features: Jira is a project management and issue tracking tool from Atlassian that helps software development teams leverage agile and other project management methodologies. –…