Fredric News

Tag: SysAdmin

  • Terraform IaC Archi: S3 Backend & State

    💡 Terraform IaC Archi: S3 Backend & State — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Terraform IaC Archi: S3 Backend & State. Pages Concept Provider with RBAC Module composition main.tf variables.tf outputs.tf state-based comparison and update Example Directory rules recommended for multi-provider management bash Copy project-root/ │ ├── main.tf…

  • Wireshark Packet Capture & BPF Protocol

    💡 Wireshark Packet Capture & BPF Protocol — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Wireshark Packet Capture & BPF Protocol. Related documents installation bash Copy brew install –cask wireshark Filters Filter specification HTTP Filter http http.request http.request.method == “GET” http.request.method == “POST” http.response tls http2 http3 Filter by Source…

  • 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):…

  • 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…

  • 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,…

  • 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…

  • CNCF Cloud-Native Open Source Ecosystem

    💡 CNCF Cloud-Native Open Source Ecosystem — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for CNCF Cloud-Native Open Source Ecosystem. Collaboration tools Issue Tracking Jira – Features: Jira is a project management and issue tracking tool from Atlassian that helps software development teams leverage agile and other project management methodologies. –…

  • Engineering IT Glossary: Infra & Cloud

    💡 Engineering IT Glossary: Infra & Cloud — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Engineering IT Glossary: Infra & Cloud. Web development common Basic Terminology Parameter Parameters used in function definition a and b below are parameters of the test function. javascript Copy function test(a, b) { return a…

  • Service Mesh Archi: Istio & Linkerd Data

    💡 Service Mesh Archi: Istio & Linkerd Data — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Service Mesh Archi: Istio & Linkerd Data. Service Mesh Overview Summary of reasons to use service mesh API gateway focuses on requests from the outside to services, while service mesh focuses on communication between…

  • Linux APT/YUM Private Mirror Repository Setup

    💡 Linux APT/YUM Private Mirror Repository Setup — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Linux APT/YUM Private Mirror Repository Setup. DEB/Ubuntu mariadb bash Copy curl -LsS https://r.mariadb.com/downloads/mariadb_repo_setup | sudo bash -s — –mariadb-server-version=”mariadb-10.4″ versions mariadb-10.4 mariadb-10.5 mariadb-10.6 mariadb-10.10 mariadb-10.11 mariadb-11.0 mariadb-11.1 mariadb-11.2 maxscale bash Copy curl -LsS https://r.mariadb.com/downloads/mariadb_repo_setup |…