Fredric News

Tag: Troubleshooting

  • OpenStack Nova & Neutron Network

    💡 OpenStack Nova & Neutron Network — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for OpenStack Nova & Neutron Network. Volume Sewing Machine Rationale k8s node notReady status: Check communication status between kubelet and vm Check vm console log openstack bash Copy #openstack ssh 접속 cat platfrom_openrc >>> export OS_USERNAME=admin export…

  • Ubuntu Package Lock (dpkg/apt lock) Release

    💡 Ubuntu Package Lock (dpkg/apt lock) Release — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Ubuntu Package Lock (dpkg/apt lock) Release. If ssh login is not possible as root vi /etc/ssh/sshd_config bash Copy … PermitRootLogin yes #if no … Or passwd may not be set. Internet connection problem References and…

  • Force Deleting Terminating Kubernetes

    💡 Force Deleting Terminating Kubernetes — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Force Deleting Terminating Kubernetes. References and Guidelines (NOTE) Verify differences from existing test results in v1.33.5+k3s1 version. Existing .spec.finalizers = [] is not useful Confirm normal deletion using the corresponding method .metadata.finalizers = [] Delete namespace with…

  • Kubernetes kube-proxy Metric Binding

    💡 Kubernetes kube-proxy Metric Binding — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Kubernetes kube-proxy Metric Binding. Monitoring kube-proxy kube-proxy also provides a metrics endpoint called /metrics. However, because the default setting is 127.0.0.1:10249, it cannot be accessed from outside. So, if you try to collect it from prometheus, a…

  • OPNsense WireGuard Client Handshake & Routing

    💡 OPNsense WireGuard Client Handshake & Routing — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for OPNsense WireGuard Client Handshake & Routing. WireGaurd Client hardware dependent issue References and Guidelines (NOTE) All of the cases below are issues that occur due to the declaration of a split tunnel. Possible solution with…

  • Docker Socket Permissions & iptables

    💡 Docker Socket Permissions & iptables — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Docker Socket Permissions & iptables. The Notion API rate limit was reached. Wait at least 6 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…

  • Kubespray Deployment SSH Timeout & Package

    💡 Kubespray Deployment SSH Timeout & Package — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Kubespray Deployment SSH Timeout & Package. The Notion API rate limit was reached. Wait at least 6 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…

  • Docker Compose Port Conflict & Networking

    💡 Docker Compose Port Conflict & Networking — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Docker Compose Port Conflict & Networking. Overview If the following error occurs when running after installation txt Copy Traceback (most recent call last): File “/usr/bin/docker-compose”, line 6, in <module> from pkg_resources import load_entry_point File “/usr/lib/python3/dist-packages/pkg_resources/__init__.py”,…

  • Web Portal CORS Policy & API Reverse Proxy

    💡 Web Portal CORS Policy & API Reverse Proxy — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Web Portal CORS Policy & API Reverse Proxy. Local Login Failed References and Guidelines (NOTE) Login is the holy trinity of DB-Keycloak-Vault (Why vault?) localhost keycloakClient authentication failed for development, AdminAPi/LoginServiceImple.java:568 Rationale A…

  • Harbor Container Registry T-Shoot & Recovery

    💡 Harbor Container Registry T-Shoot & Recovery — Executive Summary Technical architectural analysis, practical configuration manifests, and deployment instructions for Harbor Container Registry T-Shoot & Recovery. When: docker push Issue: unknown blob () bash Copy docker push my-harbor/base/ubuntu:latest >>> The push refers to repository [my-harbor/base/ubuntu] a46a5fb872b5: Pushing [==================================================>] 80.62MB unknown blob Given Use Bitnami Helmchart…