Fredric News

Tag: CloudNative

  • Kubernetes ReadOnly ServiceAccount & Limited

    💡 Kubernetes ReadOnly ServiceAccount & Limited — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Kubernetes ReadOnly ServiceAccount & Limited. readonly SA, Secrets, Kubeconfig Create permission env bash Copy export prefix=read-only export ns=default Create SA, token, CRB bash Copy kubectl create serviceaccount ${prefix}-sa -n ${ns} kubectl apply -f – << EOF…

  • 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…

  • Rook-Ceph Distributed Storage Cluster Helm

    💡 Rook-Ceph Distributed Storage Cluster Helm — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Rook-Ceph Distributed Storage Cluster Helm. References and Guidelines (NOTE) Important note: You must customize the ‘CephCluster’ resource in the sample manifest for your cluster. Each CephCluster must be deployed in its own namespace, the sample uses…

  • 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,…

  • Vue 2 to Vue 3 Migration: Composition API

    💡 Vue 2 to Vue 3 Migration: Composition API — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Vue 2 to Vue 3 Migration: Composition API. References and Guidelines (NOTE) BookMarkshttps://dev.grapecity.co.kr/bbs/board.php?bo_table=Insight≀_id=73 https://vuejs.org/#breaking-changes https://ui.toast.com/weekly-pick/ko_20200804 https://webpack.kr/configuration/dev-server/#devserver https://kyounghwan01.github.io/blog/Vue/vue3/global-state/#%E1%84%86%E1%85%A9%E1%86%A8%E1%84%91%E1%85%AD https://v3-migration.vuejs.org/migration-build.html#installation https://www.vuemastery.com/blog/vue-3-migration-build/ https://github.com/logaretm/vee-validate/issues/3438 //vee-validate 3 to 4 migration is failed Vue2 cons: limited typescript support, performance…

  • 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…

  • Talos Linux: Immutable & Secure K8s Cluster

    💡 Talos Linux: Immutable & Secure K8s Cluster — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Talos Linux: Immutable & Secure K8s Cluster. Binary Installation mac bash Copy brew install siderolabs/tap/talosctl echo ‘source <(talosctl completion zsh)’ | tee -a ~/.zshrc #if using colima sudo ln -s “$HOME/.colima/default/docker.sock” /var/run/docker.sock #if using…

  • 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…

  • AppArmor Security Profiles for Kubernetes

    💡 AppArmor Security Profiles for Kubernetes — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for AppArmor Security Profiles for Kubernetes. 📑 Table of Contents Understanding AppArmor behavior Why AppArmor? (DAC vs MAC) AppArmor’s core mode and profile controls AppArmor integration in Kubernetes (K8s) environments Key summary References Summary of Kubernetes usage…

  • Dockerfile : Multi-stage Builds & Caching

    💡 Dockerfile : Multi-stage Builds & Caching — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Dockerfile : Multi-stage Builds & Caching. Samples Syntax 1. Basic command FROM Create a new image based on the image. Format: FROM : Example: FROM node:16 RUN Specifies the command to be executed during Docker image…