Fredric News

Tag: OpenSource

  • Spring Boot Actuator Logback Logger Conflict

    💡 Spring Boot Actuator Logback Logger Conflict — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Spring Boot Actuator Logback Logger Conflict. Looking at this setting, changing the log level through Actuator is likely not possible in some packages. I will analyze the cause and suggest a solution. 🚀 🔎 Problem…

  • OAuth 2.0 & OIDC Token Analysis: ID vs Access

    💡 OAuth 2.0 & OIDC Token Analysis: ID vs Access — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for OAuth 2.0 & OIDC Token Analysis: ID vs Access. References and Guidelines (NOTE) ID Token and Access Token are the two main tokens used in the OAuth 2.0 and OpenID Connect (OIDC)…

  • Kubernetes kube-apiserver CA Certificates

    💡 Kubernetes kube-apiserver CA Certificates — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Kubernetes kube-apiserver CA Certificates. Related documents Setups 3rdParty Setups cluster cmd CNI cmd gitOps cmd SubDocs 3rd Party SubDocs Swagger Git OpenApi bash Copy https://raw.githubusercontent.com/kubernetes/kubernetes/master/api/openapi-spec/swagger.json SSL/PKI path kubectl describe pods -n kube-system kube-apiserver* ?: /etc/kubernetes/pki/* k8s-certs: /etc/kubernetes/ssl/*…

  • Kubernetes CoreDNS & systemd-resolved Config

    💡 Kubernetes CoreDNS & systemd-resolved Config — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Kubernetes CoreDNS & systemd-resolved Config. ReferenceGlossary DB: Siyoung’s Notion: troubleshooting: cmd: , 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…

  • Infisical Secret Mgmt: Machine Identity & K8s

    💡 Infisical Secret Mgmt: Machine Identity & K8s — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Infisical Secret Mgmt: Machine Identity & K8s. API Reference

  • WireGuard VPN on OPNsense: Server & Peer

    💡 WireGuard VPN on OPNsense: Server & Peer — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for WireGuard VPN on OPNsense: Server & Peer. References and Guidelines (NOTE) System Required: Required to reliably request a VPN instance endpoint from an external network Server in OPNSense Create instance and enable WG Instance…

  • Kubernetes CoreDNS Nameserver T-Shoot

    💡 Kubernetes CoreDNS Nameserver T-Shoot — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Kubernetes CoreDNS Nameserver T-Shoot. TLDR@1qzxcThere is still version 1.27… . Tried a lot. The only thing that worked was to revert to the version you suggested. Here’s everything I tried for future reference. I installed kubernetes following…

  • Bitbucket Pipelines CI/CD: DinD & Private

    💡 Bitbucket Pipelines CI/CD: DinD & Private — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Bitbucket Pipelines CI/CD: DinD & Private. 🔗 https://support.atlassian.com/bitbucket-cloud/docs/bitbucket-pipelines-configuration-reference/ yaml Copy image: #Docker image options page options: #Global options page clone: #Git clone behavior page definitions: #Cache and service container definitions page pipeline: #Pipeline start options…

  • Node.js npm Sheet: Dependency Mgmt & Audit

    💡 Node.js npm Sheet: Dependency Mgmt & Audit — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Node.js npm Sheet: Dependency Mgmt & Audit. Related pages Sub-item Install Command Global / regional classification bash Copy # 현재 프로젝트 (package.yaml) 기준으로 패키지 인스톨 npm i -y $package npm install -y $package #…

  • CKS 2026 Exam Prep: Certified K8s Security

    💡 CKS 2026 Exam Prep: Certified K8s Security — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for CKS 2026 Exam Prep: Certified K8s Security. Study In-house technology club – [Add subtitle](https://www.canva.com/design/DAHKE-QYkIE/nrLyzRbAXLpCVsiSLsVy_w/edit) – Activity method: – Preparation before each meeting: After taking Udemy, organize what you have learned under your name in…