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Tag: Tutorial

  • Red Hat Enterprise Linux (RHEL) ISO Download

    💡 Red Hat Enterprise Linux (RHEL) ISO Download — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Red Hat Enterprise Linux (RHEL) ISO Download. 🔗 https://developers.redhat.com/products/rhel/download ISO Select “Download RHEL at no-cost” Other version Select “Other RHEL version” qcow2 for Cloud Select “Virtual Guest image” Download when build is complete References…

  • Kubespray kube-vip Virtual IP Load Balancer

    💡 Kubespray kube-vip Virtual IP Load Balancer — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Kubespray kube-vip Virtual IP Load Balancer. VIP on LAN. Network ARP Pre-operation bash Copy apt install -y nmap #VIP 선정 ## host down IP 확인 ### 아래 결과중 x.x.x.0, x.x.x.1, x.x.x.255 (예약 주소) 제외하고 사용…

  • Antigravity CLI (agy): AI Agent Pair

    💡 Antigravity CLI (agy): AI Agent Pair — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Antigravity CLI (agy): AI Agent Pair. Subdocument Installation yaml Copy brew install antigravity-cli Settings MCP-servers Google Antigravity `bash Copy vi ~/.gemini/config/mcp_config.json { “mcpServers”: { “serverName”: { “command”: “path/to/executable”, “args”: [“–arg1”, “value1”], “env”: { “API_KEY”: “your-api-key”…

  • Kubernetes CoreDNS Corefile Customization

    💡 Kubernetes CoreDNS Corefile Customization — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Kubernetes CoreDNS Corefile Customization. Docs About resolv.conf References and Guidelines (NOTE) CoreDNS operation when using systemd-resolved on host HostNode: systemd-resolved is fixed as /etc/resolv.conf = 127.0.0.53loopback address. The actual resolve defined in /etc/systemd/resolved.conf is /var/run/systemd/resolve/resolv.conf. Kubelet: Default…

  • Linux NFS Server Setup: exports Sharing

    💡 Linux NFS Server Setup: exports Sharing — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Linux NFS Server Setup: exports Sharing. Setting the permissions of a directory to ‘777’ (read, write, execute for all) is generally considered unsafe as it allows anyone to access, modify, and execute files within that…

  • Kubernetes TLS Certificates & kubeadm certs

    💡 Kubernetes TLS Certificates & kubeadm certs — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Kubernetes TLS Certificates & kubeadm certs. Automated script – When renewing after expiration Attempt to bootstrap We will summarize the recovery sequence assuming the worst case scenario where bootstrapping is not set and both the…

  • Jenkins CI/CD Archi: Distributed Agent

    💡 Jenkins CI/CD Archi: Distributed Agent — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Jenkins CI/CD Archi: Distributed Agent. Operation Pipelines Credential Pipeline Sample Container Debugging groovy Copy // container내 breakPoint에서 아래 문구 추가 input message: “pod를 유지 중입니다. 디버깅 후 ‘Proceed’를 누르세요.” Scripting groovy Copy // 히스토리 제거 def…

  • jq CLI Sheet: JSON Data Filtering & Slicing

    💡 jq CLI Sheet: JSON Data Filtering & Slicing — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for jq CLI Sheet: JSON Data Filtering & Slicing. Exec main bash Copy #json to pretty $jsonSTDOUT | jq ” echo ‘\”foo\”:\”bar\”‘ | jq ” curl http://foo.bar.com/api/v1/test | jq ” #배열 내 특정 순번을…

  • Webpack Module Federation: React

    💡 Webpack Module Federation: React — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Webpack Module Federation: React. Common Enable dynamic loading: bootstrap.tsx ts Copy import React from ‘react’; import { createRoot } from ‘react-dom/client’; import App from ‘./App’; const container = document.getElementById(‘root’); if (container) { const root = createRoot(container); root.render(…

  • OPNsense Unbound DNS: Ad-blocking

    💡 OPNsense Unbound DNS: Ad-blocking — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for OPNsense Unbound DNS: Ad-blocking. References and Guidelines (NOTE) System Required: DNS Port forwarding Private domain registration References and Guidelines (NOTE) List instructing to allow the response even if the DNS query result includes a private IP address…