Fredric News

Tag: DevOps

  • GitHub Pages (github.io) Setup with Custom

    💡 GitHub Pages (github.io) Setup with Custom — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for GitHub Pages (github.io) Setup with Custom. old ruby sql Copy brew install chruby ruby-install xz ruby-install ruby 3.1.3 echo “source $(brew –prefix)/opt/chruby/share/chruby/chruby.sh” >> ~/.zshrc echo “source $(brew –prefix)/opt/chruby/share/chruby/auto.sh” >> ~/.zshrc echo “chruby ruby-3.1.3” >> ~/.zshrc…

  • Software Archi: Modularity, Cohesion

    💡 Software Archi: Modularity, Cohesion — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Software Archi: Modularity, Cohesion. The Notion API rate limit was reached. Wait at least 3 seconds before retrying this tool call. Do not retry immediately or in parallel. {“error”:{“code”:”rate_limited”,”classification”:”rate_limit”,”operation”:”fetch”,”message”:”The Notion API rate limit was reached.”,”impact”:”The requested tool…

  • Kubelet podPidsLimit Tuning: Container PID

    💡 Kubelet podPidsLimit Tuning: Container PID — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Kubelet podPidsLimit Tuning: Container PID. Shell Summary of usage based on Pod shell Copy #!/bin/bash LOG_FILE=”/var/log/pod_pids_usage.log” KUBECONFIG_PATH=”/etc/kubernetes/admin.conf” TIMESTAMP=$(date “+%Y-%m-%d %H:%M:%S”) TMP_FILE=$(mktemp) NODES=$(kubectl –kubeconfig=$KUBECONFIG_PATH get nodes -o jsonpath='{.items[*].metadata.name}’) for NODE in $NODES; do RAW_METRICS=$(kubectl –kubeconfig=$KUBECONFIG_PATH get –raw…

  • Harbor Container Registry on Docker with

    💡 Harbor Container Registry on Docker with — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Harbor Container Registry on Docker with. Closed network Ready ubuntu 20.04 > 💡 docker– containerd.io/now 1.6.6-1 amd64 \[installed,local\]– docker-ce-cli/now 5:19.03.15\~3-0\~ubuntu-focal amd64 \[installed,local\]– docker-ce/now 5:19.03.15\~3-0\~ubuntu-focal amd64 \[installed,local\]– docker-compose-plugin/now 2.6.0\~ubuntu-focal amd64 \[installed,local\]– libseccomp2/now 2.5.1-1ubuntu1\~20.04.2 amd64 \[installed,local\] docker-compose–…

  • Kubernetes kubeconfig Manifest: Clusters,

    💡 Kubernetes kubeconfig Manifest: Clusters, — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Kubernetes kubeconfig Manifest: Clusters,. shell bash Copy #!/bin/bash # `./generate_kubeconfig.sh dev 10.0.X.X mypasswd 2222 > .my.kubeconfig` contextName=$1 hostname=$2 ssh_port=${3:-22} dest_ip=$(dig $hostname +short) endpoint=”https://$dest_ip:6443″ ns=default sa=tester # ───────────────────────────────────────────── # 원격 스크립트 정의 # ───────────────────────────────────────────── remote_script=$(cat <<EOF # 1.…

  • Cilium eBPF CNI Installation & NetworkPolicy

    💡 Cilium eBPF CNI Installation & NetworkPolicy — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Cilium eBPF CNI Installation & NetworkPolicy. Installation bash Copy # required helm helm repo add cilium https://helm.cilium.io/ helm repo update # Cilium CLI 설치 curl -L –remote-name-all https://github.com/cilium/cilium-cli/releases/latest/download/cilium-linux-amd64.tar.gz tar xzvf cilium-linux-amd64.tar.gz sudo mv cilium /usr/local/bin/…

  • k3s Lightweight Kubernetes: Archi & Resource

    💡 k3s Lightweight Kubernetes: Archi & Resource — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for k3s Lightweight Kubernetes: Archi & Resource. Installation & Uninstall Automated Upgrades (deploy to system-upgrade-controller) Documentation 🔗 https://github.com/rancher/system-upgrade-controller?tab=readme-ov-file Exec bash Copy k label nodes $mynode k3s-upgrade=”true” # Y.O.L.O. kubectl apply -k github.com/rancher/system-upgrade-controller Trouble shooting Resolved k3s…

  • Bash Script if Statements: Compare Operators

    💡 Bash Script if Statements: Compare Operators — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Bash Script if Statements: Compare Operators. if Expression Use Features POSIX Compatibility if ; then Branch based on command execution result Judging by the exit code after executing the command fully compatible if [ ];…

  • Modern Languages Compare: Go, Rust, Java, and

    💡 Modern Languages Compare: Go, Rust, Java, and — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Modern Languages Compare: Go, Rust, Java, and. MSA Conformity Assessment Spring Boot VS Micronaut VS Quarkus VS Go (Golang) VS Node.js VS Kotlin with Ktor Evaluation items Spring Boot Micronaut Quarkus Go (Golang) Node.js…

  • Nginx Web Server Tuning: Reverse Proxy

    💡 Nginx Web Server Tuning: Reverse Proxy — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Nginx Web Server Tuning: Reverse Proxy. References and Guidelines (NOTE) If Nginx is accessed over HTTPS, but internally uses HTTP to communicate with backend services, this is a common configuration known as SSL termination or…