Fredric News

Tag: Tutorial

  • 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:…

  • Harvester HCI Bare-Metal Installation via ISO

    💡 Harvester HCI Bare-Metal Installation via ISO — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Harvester HCI Bare-Metal Installation via ISO. Installation Preparation Create Bootable USB Disk https://github.com/harvester/harvester/releases/latest bash Copy brew install balenaetcher –cask Booting Configuration disk, nic settings: Select physical equipment using only the arrow keys and tab, enter,…

  • Linux top Command Sheet: CPU & Memory

    💡 Linux top Command Sheet: CPU & Memory — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Linux top Command Sheet: CPU & Memory. bash Copy top CPU Usage us (user): Time used by processes running in user space. sy (system): Time used by processes running in kernel space. ni (nice):…

  • Kubernetes Labels & Annotations

    💡 Kubernetes Labels & Annotations — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Kubernetes Labels & Annotations. Label namespace bash Copy #istio 카나리 배포 istio.io/rev=canary #istio 프록시 주입 허용 or 불허 istio-injection=enabled or disabled pod bash Copy #istio 카나리 배포 istio.io/rev=canary #istio 프록시 주입 허용 or 불허 sidecar.istio.io/inject=”true” or “false”…

  • 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…

  • TACO 2.0 Infra: K8s, Ceph & OpenStack

    💡 TACO 2.0 Infra: K8s, Ceph & OpenStack — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for TACO 2.0 Infra: K8s, Ceph & OpenStack. This manual was written based on the EC2 environment created by AWS, and is an AIO (All-In-One) guide that installs Kubernetes, Ceph, and OpenStack all in one…

  • 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…

  • 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…

  • 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…