Fredric News

Tag: DeepDive

  • Linkerd Ultralight Service Mesh: mTLS

    💡 Linkerd Ultralight Service Mesh: mTLS — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Linkerd Ultralight Service Mesh: mTLS. Proxy 주입 방법 Automatic Proxy Injection inject Adding your services to Linkerd Injection (regeneration) through automatic generation of yaml txt Copy kubectl get -n $namespace deploy -o yaml | linkerd inject…

  • Spring Data JPA Specification: Dynamic

    💡 Spring Data JPA Specification: Dynamic — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Spring Data JPA Specification: Dynamic. References and Guidelines (NOTE) To prepare for maintenance difficulties when using JPA Creteria, frequently used syntax was prepared as a static method. (static method defined as generic grammar) java Copy /**…

  • Open Policy Agent (OPA/Gatekeeper) K8s

    💡 Open Policy Agent (OPA/Gatekeeper) K8s — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Open Policy Agent (OPA/Gatekeeper) K8s. Language Rego Kubernetes Setup Installation Check Gatekeeper resource bash Copy export factor=gatekeeper kubectl get $(kubectl api-resources -o name | grep $factor | sed -z ‘s/[\n\r]/,/g’ | sed ‘s/.$//g’) -A

  • Single Page Applications (SPA): SSR vs CSR

    💡 Single Page Applications (SPA): SSR vs CSR — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Single Page Applications (SPA): SSR vs CSR. Virtual DOM References and Guidelines (NOTE) Virtual DOM is a virtual DOM structure implemented as a JavaScript object. It has a structure similar to the actual DOM…

  • Linux Timezone & timedatectl NTP

    💡 Linux Timezone & timedatectl NTP — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Linux Timezone & timedatectl NTP. Check the current time (current time zone) bash Copy date >>> Wed Oct 21 05:03:15 UTC 2020 <<< Check current time zone bash Copy ls -al /etc/localtime >>> /etc/localtime -> /usr/share/zoneinfo/Etc/UTC…

  • Kubernetes Multi-Cluster Access: kubeconfig

    💡 Kubernetes Multi-Cluster Access: kubeconfig — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Kubernetes Multi-Cluster Access: kubeconfig. Related documents Body 🔗 https://kubernetes.io/ko/docs/concepts/configuration/organize-cluster-access-kubeconfig/ bash Copy #[Target Cluster] ## ServiceAccount 생성 export KUBE_SA=jenkins export KUBE_NS=jenkins-Enterprise Cloud kubectl create sa -n ${KUBE_NS} ${KUBE_SA} ## SA ClusterRoleBinding 생성 – ## 인증토큰 얻기 kubectl get…

  • HAProxy Archi: L4/L7 Reverse Proxy & HA

    💡 HAProxy Archi: L4/L7 Reverse Proxy & HA — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for HAProxy Archi: L4/L7 Reverse Proxy & HA. Required registration elements portal frontend, backend → k8s ingress keycloak vault harbor Optional registration element mariaDB

  • Webpack 5 Module Federation: Micro-Frontend

    💡 Webpack 5 Module Federation: Micro-Frontend — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Webpack 5 Module Federation: Micro-Frontend. rsbuild React Producer (Provider, Remote) bash Copy npm create rsbuild@latest # rsbuild-producer # React # TypeScript cd rsbuild-producer npm add @module-federation/enhanced –save-dev #npm add @module-federation/rsbuild-plugin –save-dev #! 아래의 configuration 확인 후…

  • Software Terminology: Artifact vs Library

    💡 Software Terminology: Artifact vs Library — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Software Terminology: Artifact vs Library. In software development, artifact and library are often used interchangeably, but they have different meanings. 1. Artifact Artifact refers to all artifacts created during the software development process. This output may…

  • Google gVisor Sandbox Container Runtime

    💡 Google gVisor Sandbox Container Runtime — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Google gVisor Sandbox Container Runtime. Overview Open source container runtime developed by Google Unlike containers that share the host kernel, it is isolated from the host kernel and provides a lightweight user-mode kernel Security Isolation: Enhances…